0001 This invention relates to novel compounds useful in therapy, particularly in the treatment of benign prostatic hyperplasia. 0002 International Patent Application WO 89/05297 discloses a number of substituted quinazoline compounds which are indicated as inhibitors of gastric acid secretion. 0003 According to the present invention, there is provided a compound of formula I, 2

0004 wherein 0005 R1 represents C1-4 alkoxy optionally substituted by one or more fluorine atoms; 0006 R2 represents H or C1-6 alkoxy optionally substituted by one or more fluorine atoms; 0007 R3 represents one or more groups independently selected from H, halogen, C1-4 alkoxy and CF3; 0008 in addition, R2 and one R3 group may together represent OCH2, the methylene group being attached to the ortho-position of the pendant phenyl ring; 0009 R4 represents a 4-, 5- or 6-membered heterocyclic ring containing 1 or 2 heteroatoms selected from N, O and S, the ring being optionally fused to a benzene ring or a 5- or 6-membered heterocyclic ring containing 1 or 2 heteroatoms selected from N, O and S, the ring system as a whole being optionally substituted by one or more groups independently selected from OH, C1-4 alkyl, C1-4 alkoxy, halogen, SO2NR8R9 and NHSO2(C1-4 alkyl), and when S is a member of the ring system, it may be substituted by one or two oxygen atoms; 0010 R8 and R9 independently represent H or C1-4 alkyl; 0011 X represents CH or N; and 0012 L is absent, 0013 or represents a cyclic group of formula Ia, 3

0014 in which N is attached to the 2-position of the quinoline or quinazoline ring; 0015 A is absent or represents CO or SO2; 0016 Z represents CH or N; 0017 m represents 1 or 2, and in addition, when Z represents CH, it may represent 0; and 0018 n represents 1, 2 or 3, provided that the sum of m and n is 2, 3, 4 or 5; 0019 or represents a chain of formula Ib, 4

0020 in which N is attached to the 2-position of the quinoline or quinazoline ring; 0021 A and Z have the same significance as A and Z above, respectively; 0022 R6 and R7 independently represent H or C1-4 alkyl; and 0023 p represents 1, 2 or 3, and in addition, when Z represents CH, it may represent 0; 0024 or a pharmaceutically acceptable salt thereof (referred to together herein as the compounds of the invention). 0025 Pharmaceutically acceptable salts include acid addition salts, such as hydrochloride and hydrobromide salts, and phosphate salts. 0026 Alkyl and alkoxy groups that R1-4 may represent or include can be straight chain, branched chain, cyclic, or a combination thereof 0027 Heterocyclic groups that R4 represents may be saturated or unsaturated. 0028 The compounds of the invention may be optically active. In particular, they may exhibit atropisomerism about the bond joining the pendant phenyl ring to the rest of the molecule when an R3 substituent is in the 2- or 3-position of the phenyl ring. The invention includes all optical isomers of the compounds of formula I, and all diastereoisomers thereof. 0029 Preferred groups of compounds that may be mentioned include those in which: 0030 (a) R1 represents methoxy; 0031 (b) R2 represents methoxy; 0032 (c) R2 and an R3 group together represent OCH2; 0033 (d) R3 represents H or 4-fluoro; 0034 (e) R4 represents a group having the formula II, III, IV, V or VI, 5

0035 wherein 0036 Y represents O, CH2, SO2, NR5 or CHF; and 0037 R5 represents H or C1-4 alkyl; the group of formula II being of particular interest, especially when Y represents O; and 0038 (f) L represents a group of formula VII, 6

0039 or is absent, this latter preference being of particular interest when R4 represents a group of formula V or VI. 0040 According to the invention, there is also provided a process for the production of a compound of the invention, which comprises: 0041 (a) when X represents CH, cyclizing a compound of formula X, 7

0042 in which R1-4 and L are as defined above; 0043 (b) when A or A is present, and Z or Z represents N, reacting a compound of formula XIIIa or XIIIb, as appropriate, 8

0044 in which R1-3, R6, R7, X, m, n and p are as defined above, with a compound of formula XIV, 9

0045 in which R4 is as defined above, A represents CO or SO2 and Lg represents a leaving group; 0046 (c) reacting a compound of formula XVIII, 10

0047 in which R1, R2, R4, X and L are as defined above, with a compound of formula XIX, 11

0048 in which R3 is as defined above; or 0049 (d) when X represents N, reacting a compound of formula XXII, 12

0050 in which R1-3 are as defined above, with a compound of formula XXIIIa or XXIIIb, as appropriate, 13

0051 in which R4, R6, R7, A, A, Z, Z, m, n and p are as defined above; 0052 (e) when A or A represents CO, reacting a compound of formula XXVIIIa or XXVIIIB, as appropriate, 14

0053 in which R1-3, R6, R7, X, Z, Z, m, n and p are as defined above, and Lg is a leaving group, with a compound of formula XXIX,

HR4aXXIX

0054 in which R4a represents the groups defined by R4 above which contain a nucleophilic nitrogen atom in the ring, this nucleophilic nitrogen atom being attached to H; 0055 (f) conversion of a compound of formula I in which L represents a cyclic group of formula Ia, to a corresponding compound of formula I in which L represents a chain of formula Ib in which R6 and R7 each represent H, by the action of a strong base; 0056 (g) when A or A is absent and Z or Z represents N, reacting a compound of formula XIIIa or XIIIb, as defined above, with a compound of formula XXX,

R4-HalXXX

0057 in which R4 is as defined above and Hal represents a halogen atom attached to the ring; or 0058 (h) when R2 and one R3 group together represent OCH2, cyclization of a compound of formula XXXI, 15

0059 in which R1, R4, X and L are as defined above, and R3a has the same meaning as R3 above except that R2 and an R3a group do not together represent OCH2; 3a and where desired or necessary converting the resulting compound of the invention into a pharmaceutically acceptable salt or vice versa. 0060 In process (a), the cyclization may be carried out in the presence of a strong base (for example lithium diisopropylamide) in a solvent which does not adversely affect the reaction (for example tetrahydrofuran) around room temperature and quenched with water. 0061 In process (b), suitable leaving groups are OH and Cl. When the compound of formula XMV is a carboxylic acid, the reaction may be carried out in the presence of conventional coupling agents for example 1-hydroxybenzotriazole monohydrate, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and 4-methylmorpholine in a solvent which does not adversely affect the reaction (for example CH2Cl2) at or around room temperature. When the leaving group is Cl. the reaction may be carried out in a solvent which does not adversely affect the reaction (for example CH2Cl2) around 0 C. 0062 In process (c), the reaction may be carried out in the presence of a palladium catalyst for example tetrakis(triphenylphosphine)palladium in a solvent which does not adversely affect the reaction (for example a mixture of toluene, ethanol and 1N aqueous sodium carbonate) at an elevated temperature (for example the reflux temperature of the solvent). 0063 In process (d), the reaction may be carried out in a solvent which does not adversely affect the reaction (for example n-butanol) in the presence of a base (for example triethylamine) at an elevated temperature (for example 100 C.). 0064 In process (e), suitable leaving groups include Cl. The reaction may be carried out in a solvent which does not adversely affect the reaction (for example THF) in the presence of a base (for example triethylamine) at room temperature. 0065 The reaction may also be carried out without isolating the compound of formula XXVIIIa or XXVIIIb, by reacting a compound of formula XIIIa or XIIIb with triphosgene and a compound of formula XYX. In this case the leaving group is Cl. The reaction may be carried out in a solvent which does not adversely affect the reaction (for example CH2Cl2) in the presence of a base (for example triethylamine) at or around room temperature. 0066 In process (f), suitable strong bases include lithium diisopropylamide. The reaction may be carried out in a solvent which does not adversely affect the reaction (for example THF). 0067 In process (g), the reaction may be carried out in a solvent which does not adversely affect the reaction (for example a mixture or n-BuOH and dimethylacetamide) in the presence of a base (for example triethylamine) at an elevated temperature (for example 80 C.). 0068 In process (h), suitable reagents are sodium carbonate with palladium acetate. The reaction may be carried out in a solvent which does not adversely affect the reaction (for example dimethylacetamide) at an elevated temperature (for example 130 C.). 0069 It will be apparent to those skilled in the art that in the processes described above for example process (c), and in the methods given below for preparation of the starting materials used in the above processes, when R2 and R3 are present in different molecules, they cannot together represent OCH2. 0070 Compounds of formula X see process (a) may be prepared by reaction of a compound of formula XI, 16

0071 in which R1-3 are as defined above, with a combination of a compound of formula XII, 17

0072 in which R4 and L are as defined above, and phosphorous oxychloride in dichlioromethane at the reflux temperature of the solvent. 0073 Compounds of formula XIIIa or XIIIb see process (b) in which X represents CH may be prepared from compounds of formula XVa or XVb, as appropriate, 18

0074 in which R1-3, R6, R7, m, n and p are as defined above, by bubbling HCl gas through a solution of the compound in dichloromethane. 0075 Compounds of formula XVa or XVb may be prepared from compounds of formula XVIa or XVIb, as appropriate, 19

0076 in which R1-3, R6, R7, m, n and p are as defined above, by cyclization using potassium hydroxide or lithium diisopropylamide at an elevated temperature (such as 90 C.) in DMSO, quenching with water. 0077 Compounds of formula XVIa or XVIb may be prepared by reacting a compound of formula XI, as defined above, with a compound of formula XVIIa or XVIIb, as appropriate, 20

0078 in which R6, R7, m, n and p are as defined above, by the method described above for producing compounds of formula X. 0079 Compounds of formula XIIIa or XIIIb in which X represents N may be prepared by reacting a compound of formula XXII, 21

0080 in which R1-3 are as defined above, with a compound of formula XXIIa or XXIIb, as appropriate, 22

0081 in which R6, R7, m, n and p are as defined above, using the conditions mentioned for process (d) above. 0082 Compounds of formula XVIII see process (c) in which X represents CH may be prepared by cyclization of a compound of formula XX, 23

0083 in which R1, R2, R4 and L are as defined above, using the reaction conditions mentioned in process (a) above. 0084 Compounds of formula XX may be prepared by reacting a compound of formula XXI, 24

0085 in which R1 and R2 are as defined above, with a compound of formula XII as defined above, using the method described above for the preparation of compounds of formula X. 0086 Compounds of formula XVIII in which X represents N may be prepared by reacting a compound of formula XXVII, 25

0087 in which R1 and R2 are as defined above, with a compound of formula XXIIIa or XXIIIb, as appropriate, as defined above, using the reaction conditions mentioned above for process (d). 0088 Compounds of formula XXII see process (d) may be prepared from a compound of formula XXIV, 26

0089 in which R1-3 are as defined above, by reaction with a saturated solution of ammonia in methanol. 0090 Compounds of formula XXV may be prepared from a compound of formula XXV, 27

0091 in which R1 and R2 are as defined above, by reaction with a compound of formula XIX as defined above using the reaction conditions described above for process (c), followed by reaction with POCl3 and N,N-dimethylaniline. 0092 Compounds of formula XXV may be prepared from a compound of formula XXVI, 28

0093 in which R1 and R2 are as defined above, using conventional techniques. 0094 Compounds of formula XXVIIIa and XXVIIIb see process (e) in which Lg represents Cl may be prepared from compounds of formula XIIIa or XIIIb, as appropriate, by reaction with triphosgene. The reaction may be carried out in a solvent which does not adversely affect the reaction (for example CH2Cl2) in the presence of a base (for example triethylamine) at around 10 C. Compounds of formula XXXI see process (h) may be prepared from compounds of formula XXXI, 29

0095 in which R1, R4, L and X are as defined above, by reaction with a compound of formula XXIII, 30

0096 wherein R3a is as defined above, in the presence of sodium hydride in DMF at room temperature. 0097 Compounds of formula XXXI are analogous to compounds of formula I, and may be prepared using analogous methods. For example, when X represents CH, the compounds may be prepared by cyclizing a compound analogous to those of formula X using process (a). When X represents N, the compounds may be prepared from a compound analogous to those of formula XXI and a compound of formula XXIIIa or XXIIb, as appropriate, using process (d). 0098 Compounds of formulae XI, XII, XIV, XVIIa, XVIIb, XIX, XXI, XXIIa, XXIIb, XXIII, XXVI, XXIX, XXX and XXXII are either known or are available using known techniques. 0099 The intermediate compounds of formulae X, XIIIa, XIIIb, XVIII, XXII, XXVIIIa, XXVIIIb and X form a further aspect of the invention. 0100 It will be apparent to those skilled in the art that sensitive functional groups may need to be protected and deprotected during synthesis of a compound of the invention. This may be achieved by conventional techniques, for example as described in Protective Groups in Organic Synthesis by T W Greene and P G M Wuts, John Wiley and Sons Inc, 1991. 0101 The compounds of the invention are useful because they possess pharmacological activity in animals. In particular, the compounds are useful in the treatment of a number of conditions including hypertension, myocardial infarction, male erectile dysfunction, hyperlipidaermia, cardiac arrhythmia and benign prostatic hyperplasia. The latter condition is of greatest interest. Thus, according to another aspect of the invention, there is provided a method of treatment of benign prostatic hyperplasia which comprises administering a therapeutically effective amount of a compound of the invention to a patient suffering from such a disorder. The use of the compounds of the invention as pharmaceuticals, and the use of the compounds of the invention in the manufacture of a medicament for the treatment of benign prostatic hyperplasia, are also provided. 0102 The compounds of the invention may be administered by any convenient route, for example orally, parenterally (e.g. intravenously, transdermally) or rectally. The daily dose required will of course vary with the particular compound used, the particular condition being treated and with the severity of that condition. However, in general a total daily dose of from about 0.01 to 10 mg/kg of body weight, and preferably about 0.05 to 1 mg/kg, is suitable, administered from 1 to 4 times a day. 0103 The compounds of the invention will generally be administered in the form of a suitable pharmaceutical formulation. Thus, according to another aspect of the invention, there is provided a pharmaceutical formulation including preferably less than 50% by weight of a compound of the invention in admixture with a pharmaceutically acceptable adjuvant, diluent or carrier. The pharmaceutical formulation is preferably in unit dose form. Such forms include solid dosage forms, for example tablets, pills, capsules, powders, granules, and suppositories for oral, parenteral or rectal administration; and liquid dosage forms, for example sterile parenteral solutions or suspensions, suitably flavoured syrups, flavoured emulsions with edible oils such as cottonseed oil, sesame oil, coconut oil and peanut oil, and elixirs and similar pharmaceutical vehicles. 0104 Solid formulations may be prepared by mixing the active ingredient with pharmaceutical carriers, for example conventional tabletting ingredients such as corn starch, lactose, sucrose, sorbitol, talc, stearic acid, magnesium stearate, dicalcium phosphate, gums and other diluents, for example water, to form a homogeneous preformulation formulation in which the active ingredient is uniformly dispersed so that it may be readily subdivided into equally effective unit dosage forms containing typically from 0.1 to about 500 mg of the active ingredient. The solid dosage forms may be coated or otherwise compounded to prolong the action of the formulation. 0105 The formulations of the invention may also contain a human 5-a reductase inhibitory compound see International Patent Application WO 95/28397, or a compound of the invention could be presented in a pharmaceutical pack also containing a human 5-a reductase inhibitory compound as a combined preparation for simultaneous, separate or sequential use. 0106 The compounds of the invention may be tested in the screens set out below. 0107 Contractile Responses of Human Prostate 0108 Prostatic tissue was cut into longitudinal strips (approximately 3210 mm) and suspended in organ baths under a resting tension of 1 g in Krebs Ringer bicarbonate of the following composition (mM): NaCl (119), KCl (4.7), CaCl2 (2.5), KH2PO4 (1.2), MgSO4 (1.2), NaHCO3 (25), glucose (11), and gassed with 95% 02/5% CO2. The solution also contained 10 mM cocaine and 10 mM corticosterone. Tissues were exposed to a sensitising dose of ()-noradrenaline (100 mM) and washed over a 45 minute period. Isometric contractions were obtained in response to cumulative additions of ()-noradrenaline to obtain control curves in all tissues. A further curve was then generated in the presence or absence of antagonist (incubated for 2 hours). Antagonist affinity estimates (pA2) were determined using a single concentration of competing antagonist, pA2log A/(DR-1) where the dose ratio (DR), relative to corresponding controls, was produced by a single concentration of antagonist A, assuming competitive antagonism and Schild regression close to unity.

Anaesthetised Dog Model of Prostatic Pressure and Blood Pressure 0109 Mature male beagles (12-15 kg body weight) were anaesthetised with sodium pentobarbitone (30-50 mg/kg i.v.) and a tracheal cannula was inserted. Subsequent anaesthesia was maintained using pentobarbitone infusion. The animals were respirated with air using a Bird Mk8 respirator (Bird Corp., Palm Springs, Calif., U.S.A.) adjusted to maintain blood gasses in the range pO2 90-110 mm Hg, pCO2 35-45 mm Hg, pH 7.35-7.45. Body temperature was maintained at 36-37.5 C. using a heated operating table. Catheters were placed into the left femoral artery for recording blood pressure and into the left femoral vein for compound administration. Heart rate was recorded via the lead II E.C.G. A laparotomy was performed to cannulate both ureters to prevent change of fluid volume within the bladder. A 7F cardiac catheter (with a 1.5 ml capacity balloon tip) was inserted into the bladder via the urethra. The balloon was filled with air and the catheter withdrawn until the balloon became lodged in the prostate, which was confirmed by digital pressure. Balloon pressure was recorded via a Druck transducer. Prostatic pressure and haemodynamic parameters were made on a Grass Polygraph (Grass Instruments, Quincy, Mass, U.S.A.) and the data measured on line using a Motorola 68000-based microcomputer system (Motorola Inc., Temple, Ariz., U.S.A.). Compounds were made up in PEG 300 and administered i.v. through a catheter in the femoral vein. Responses to phenylephrine (1-16 g/kg i.v. in saline) were obtained to generate control dose-response curves (two control curves for each experiment). Compounds were administered (in terms of compound base) at 10-300 g/kg i.v. 5 min before construction of phenylephrine curves (constructed up to a maximum dose of 128 g/kg in the presence of test compound). 0110 Due to 1-related dysrhythymic properties of phenylephrine, absolute maximal responses were not obtained but were taken as 10% greater than the control response obtained with 16 g/kg phenylephrine. Drug concentrations were calculated on the basis of molar weight of compound/kg body weight thus allowing a pseudo pA2 calculation by Schild analysis using dose ratios derived from shifts in the phenylephrine dose-response curves. 0111 The compounds of the invention may have the advantage that they are more potent, have a longer duration of action, have a broader range of activity, are more stable, have fewer side effects or are more selective (in particular they may have beneficial effects in benign prostatic hyperplasia without causing undesirable cardiovascular effects, for example because they are able to selectively antagonise prostatic subreceptors of the 1-adrenoceptor), or have other more useful properties than the compounds of the prior art. 0112 The invention is illustrated by the following examples, in which the following abbreviations are used: 0113 DMAdimethylacetamide 0114 DMFdimethylformamide 0115 DMPU1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidone 0116 EtOAcethyl acetate 0117 EtOHethanol 0118 hhour 0119 MeOHmethanol 0120 minminute 0121 n-BuOHn-butanol 0122 THFtetrahydrofuran 0123 tlcthin layer chromatography 0124 Intermediate 1 0125 1-(t-Butyloxycarbonyl)-1,4-diazepane 0126 To a solution of homopiperazine (10 g, 1.0 mol) and triethylamine (210 ml, 152 g, 1.5 mol) in CH2Cl2 (500 ml) at 0 C. was added a solution of di-(t-butyl) dicarbonate (195 g, 0.89 mol) in CH2Cl2 (300 ml). The mixture was allowed to warm to room temperature and stirred for 18 h after which time the CH2Cl2 was evaporated under reduced pressure. The resulting residue was partitioned between ether and 2N citric acid and the aqueous layer was extracted with ether (4200 ml). The aqueous layer was basified with 2N aqueous NaOH and then extracted with CH2Cl2 (4400 ml). The combined CH2Cl2 extracts were washed with H2O (2), saturated brine (1) and dried over MgSO4. Evaporation under reduced pressure followed by azeotroping with CH2Cl2 (4) gave the title compound as a yellow waxy solid (94.3 g, 53%). Rf 0.25 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 201 (MH). Found: C, 58.86; H, 10.03; N, 13.58; C10H20N2O2 0.05.CH2Cl2 requires C, 59.02; H, 9.91; N, 13.70%. 0127 Intermediate 2 0128 1-(t-Butyloxycarbonyl)-4-(4-morpholinecarbonyl)-1,4-diazepane 0129 A solution of Intermediate 1 (92.0 g, 0.46 mol) and triethylamine (96.0 ml, 69.7 g, 0.69 mol) in CH2Cl2 (500 ml) at 0 C. was treated dropwise with a solution of 4-morpholinecarbonyl chloride (64.0 ml, 82.0 g, 0.55 mol) in CH2Cl2 (100 ml) and the reaction was stirred at room temperature under N2 for 18 h. The reaction mixture was then diluted with CH2Cl2 (400 ml) and washed with 2N citric acid (3400 ml), saturated brine (1500 ml), dried over MgSO4 and evaporated to give the title compound as an off-white solid (141.7 g, 98%). Rf 0.80 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 314 (MH). Found: C, 57.50; H, 8.69; N, 13.41; C15H27N3O4 requires C, 57.50; H, 8.69; N, 13.41%. 0130 Intermediate 3 0131 1-(4-Morpholinecarbonyl)-1,4-diazepane hydrochloride 0132 A solution of Intermediate 2 (140.0 g, 0.44 mol) in CH2Cl2/MeOH (1/1, v/v, 600 ml) at 0 C. was saturated with HCl gas and the reaction mixture was stirred at room temperature under N2 for 18 h after which time the reaction mixture was evaporated under reduced pressure and slurried in EtOAc to give, after filtration, a white hygroscopic solid. This was further purified by slurrying in acetone, filtering, washing with ether and drying in vacuo at 60 C. to give the title compound as a colourless solid (99.0 g, 90%). Rf 0.41 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 214 (MH). Found: C, 47.50; H, 8.10; N, 16.55; C10H19N3O2 HCl 0.2.H2O requires C, 47.41; H, 8.12; N, 16.59%. 0133 Intermediate 4 0134 1-Acetyl-4-(4-morpholinecarbonyl)-10.4-diazepane 0135 To a solution of Intermediate 3 (50 g, 0.2 mol) and triethylamine (42 ml, 30.5 g, 0.3 mol) in CH2Cl2 (400 ml) at 5 C. was added acetic anhydride (23 ml, 24.9 g, 0.24 mol) dropwise over 15 min and the reaction was then stirred for a further 2 h at room temperature under N2. Dilution with CH2Cl2 (600 ml) was followed by washing with saturated aqueous sodium bicarbonate (2200 ml) and the combined aqueous layers extracted with CH2Cl2 (1100 ml). The CH2Cl2 layers were combined and washed with saturated brine, dried over MgSO4 and evaporated to give a light brown oil. This was dissolved in CH2Cl2 (300 ml) and treated with triethylamine (8 ml, 5.8 g, 0.06 mol) and EtOH (5 ml), stirred for 1 h at room temperature then washed with saturated sodium bicarbonate and the aqueous layer extracted with CH2Cl2 (5). The combined CH2Cl2 layers were dried over MgSO4 and evaporated under reduced pressure to give a yellow oil which was then azeotroped with CH2Cl2 (4) to give the title compound as a yellow oil (47.1 g, 92%). Rf 0.45 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 256 (MH). Found: C, 52.62; H, 8.18; N, 15.02; C12H21N3O3 0.3.CH2Cl2 requires C, 52.61; H, 7.75; N, 14.96%.

Example 1 0136 4-Amino-5-(2-chlorophenyl)-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0137 (a) 5-(2-Chlorophenyl)-4-cyano-3-nitroanisole 0138 5-Bromo-4-cyano-3-nitroanisole prepared by the method of Harrison et al, J. Chem. Soc. C, 1769 (1966) (250 mg, 0.86 mmol) and 2-chlorophenylboronic acid (150 mg, 0.96 mmol) were dissolved in a mixture of toluene (10 ml), EtOH (5.6 ml), and 1N aqueous sodium carbonate (1.7 ml). The solution was placed under a nitrogen atmosphere and tetrakis(triphenylphosphine)palladium (30 mg, 0.03 mmol) added. After refluxing for 3 h, the solvent was removed from the reaction mixture under reduced pressure. The residue was partitioned between H2O (50 ml) and EtOAc (50 ml) and the EtOAc layer washed with H2O (250 ml), and dried over MgSO4. Following removal of the solvent, the crude material was purified on silica gel, eluting with hexane/ether (1/1, v/v). This gave the subtitle compound as a colourless gum (252 mg, 100%). Rf 0.38 (hexane/ether 1:1, v/v). MS m/z 306 and 308 (MNH4). 0139 (b) 3-Amino-5-(2-chlorophenyl)-4-cyanoanisole 0140 The product of step (a) (300 mg, 11.0 mmol) was dissolved in DMF (3 ml) and a solution of sodium dithionite hydrate added (500 mg, 2.9 mmol in 6 ml of H2O). The solution became warm and some solid precipitated out of solution. After stirring for 30 min at room temperature, 15 ml of H2O and 2N HCl were added. This mixture was extracted with EtOAc (230 ml), neutralised using 2N NaOH and re-extracted with EtOAc (230 ml). The combined EtOAc extracts were dried over MgSO4 and the solvent removed to give the crude product. This was purified on silica gel, eluting with CH2Cl2/MeOH (98/2, v/v) to give the subtitle compound as colourless gum (190 mg, 74%). Rf 0.29 (hexane/ether 1/1, v/v). MS m/e 276 and 278 (MNH4). 0141 (c) 6-(2-chlorophenyl)-4-methoxy-2--4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylethylideneaminobenzonitrile 0142 The product of step (b) (190 mg, 0.74 mmol) was dissolved in CH2Cl2 (5 ml) and phosphorous oxychloride (0.082 ml, 0.86 mmol) added in one portion to the stirred solution, at room temperature. After 20 min, a solution of Intermediate 4 (380 mg, 1.5 mmol) in CH2Cl2 (5 ml) was added to the reaction mixture, and the mixture heated to reflux for 14 h. After cooling to room temperature, a further 30 ml of CH2Cl2 was added, and this solution washed with 2N aqueous NaOH (220 ml), dried over MgSO4, and the solvent removed to give the subtitle compound as a colourless gum (155 mg, 43%). Rf 0.26 (CH2Cl,/MeOH 95/5, v/v). MS m/z 496 (MH). 0143 (d) 4-Amino-5-(2-chlorophenyl)-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0144 The product of step (c) (155 mg, 0.31 mmol) was dissolved in dry THF (5 ml), under a dry nitrogen atmosphere, and the solution cooled to 78 C. A 1.5 M solution of lithium diisopropylamide in THF (0.25 ml, 0.38 mmol) was added to the reaction which was allowed to warm to room temperature. Analysis by tlc indicated that starting material remained, hence the solution was recooled to 78 C. and a further 0.25 ml of the lithium diisopropylamide solution added. After warming to room temperature, the mixture was again analysed by tic and then quenched with H2O (0.5 ml). EtOAc was added (30 ml) and the solution washed with H2O (220 ml), dried over MgSO4, and the solvent removed under reduced pressure. The crude material was purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (92/7/1, v/v) to give the title compound as a white foam (50 mg, 31%). Rf 0.25 (CH2Cl2/MeOH 9/1, v/v). MS m/z 496 (M). 1H NMR (CDCl3) : 2.05 (2H, m), 3.14 (2H, m), 3.45 (2H, t), 3.60 (6H, m), 3.70 (2H, t), 3.82 (2H bs), 3.86-3.99 (5H, m), 5.75 (1H, s), 6.47 (1H, s), 7.0 (1H, s), 7.28-7.45 (3H, m), 7.45-7.51 (1H, m). Found C, 60.75; H, 6.02; N, 13.13; C26H30ClN5O3.0.25 CH2Cl2 requires C, 60.96; H, 5.94; N, 13.54%.

Example 2 0145 4-Amino-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-5-phenylquinoline 0146 4-Cyano-3-nitro-5-phenylanisole 0147 The subtitle compound was prepared by the method of Example 1(a), but using phenylboronic acid. The crude material was triturated with 20 ml of ether, and recrystallised from EtOAc to give a white crystalline solid (83%). m.p. 175-176 C. Rf 0.44 (hexane/ether 1:1, v/v). MS m/z 169 (no Mobserved). 0148 (b) 3-Amino-4-cyano-5-phenylanisole 0149 Reduction of the product of step (a) using the procedure of Example 1(b) gave the subtitle compound (41%) yellow gum. Rf 0.30 (hexane/ether 1:1, v/v). MS m/z 242 (no Mobserved). 0150 (c) 4-Methoxy-2-1-4-(morpholine-4-carbonyl)-1,4-diazepan-1-ylethylideneamino-6-phenylbenzonitrile 0151 The subtitle compound was obtained as a white foam from the product of step (b) in 87% yield using the procedure described in Example 1(c). Rf 0.66 (CH2Cl2/MeOH 9/1, v/v). MS m/z 462 (MH). 0152 (d) 4-Amino-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-5 0153 The title compound (87%) was obtained as an off-white powder from the product of step (c) using the procedure described in Example 1(d). Rf 0.16 (CH2Cl2/MeOH 9/1, v/v). MS m/z 462 (MH). 1H NMR (CDCl3) : 2.05 (2H, m), 3.16 (4H, m), 3.48 (2H, t), 3.56-3.68 (6H, m), 3.71 (2H, t), 3.87-3.99 (7H, m), 5.73 (1H, s), 6.54 (1H, s), 7.01 (1H, bs), 7.41 (5H, s). Found C, 66.89; H, 6.78; N, 14.42; C26H31N5O3 0.1.CH2Cl2 requires C, 66.69; H, 6.69; N, 14.90%

Example 3 0154 4-Amino-6,7-dimethoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-5-phenylquinoline 0155 (a) 2-(3,4-Dimethoxyphenyl)-4,4-dimethyl-2-oxazoline 0156 The subtitle compound was prepared from 3,4-dimethoxybenzoic acid according to the method of Meyers et al., J. Org. Chem., 32, 2787, (1974). 0157 (b) 2-(3,4-Dimethoxy-2-iodophenyl)-4,4-dimethyl-2-oxazoline 0158 niButyllithium (2.5M in hexane, 8.9 ml, 22.3 mmol) was added dropwise to a solution of the product of step (a) (4.2 g, 17.8 mmol) in dry ether (200 ml) at 0 C. and the reaction was stirred under N2 for 2 h. This was followed by the dropwise addition of iodine (5.46 g, 21.5 mmol) in ether (100 ml) and the reaction was allowed to warm to room temperature over 1 h. The reaction mixture was poured onto H2O, the ether layer was separated, washed with saturated aqueous sodium thiosulphate solution (1) followed by saturated brine (1) then dried over MgSO4 and evaporated under reduced pressure to give the subtitle compound as a yellow oil (5.2 g, 80%). Rf 0.60 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v); MS m/z 362 (MH). 0159 (c) 3,4-Dimethoxy-2-iodobenzonitrile 0160 To a solution of the product of step (b) (5.2 g, 14.4 mmol) in pyridine (30 ml) was added POCl3 (2.7 ml, 4.4 g, 28.8 mmol) and the reaction was heated to 85 C. for 18 h. The reaction mixture was cooled, partitioned between saturated aqueous sodium carbonate solution (300 ml) and then extracted with ether (2100 ml). The ether layer was washed with 2N HCl (275 ml) followed by H2O (1) and then dried over MgSO4 and evaporated under reduced pressure to afford a yellow oil. This was purified by slurrying with hexane and filtering to give the subtitle compound as an off-white solid (2.82 g, 68%). Rf 0.80 (CH2Cl2/MeOH 95/5, v/v). MS m/z 307 (MH). Found: C, 38.03; H, 2.88; N, 4.64; C9H8NO2I 0.05.hexane requires C, 38.05; H, 2.97; N, 4.77%. 0161 (d) 3,4-Dimethoxy-2-iodo-6-nitrobenzonitrile 0162 Nitronium tetrafluoroborate (1.73 g, 13.0 mmol) was added portionwise to a solution of the product of step (c) (2.67 g, 9.2 mmol) in acetonitrile (40 ml) at 0 C. The reaction was stirred for 0.5 h under N2 and then poured into saturated aqueous sodium bicarbonate solution and extracted with EtOAc (1). The organic layer was washed with saturated brine (1), dried over MgSO4 and evaporated under reduced pressure to give a residue which was slurried in hexane and filtered to give the subtitle compound as an off-white solid (2.51 g, 82%). Rf 0.46 (EtOAc/hexane 1/1, v/v). MS m/z 352 (MNH4). 0163 (e) 3,4-Dimethoxy-6-nitro-2-phenylbenzonitrile 0164 The subtitle compound was prepared from the product of step (d) by the method of Example 1(a) using phenylboronic acid. The subtitle compound (81%) was obtained as a light yellow solid. Rf 0.46 (EtOAc/hexane 1/1, v/v). MS m/z 302 (MNH4). Found: C, 63.23; H, 4.23; N, 9.86; C15H12N2O4 requires C, 63.38; H, 4.23; N, 9.86%. 0165 (f) 6-Amino-3,4-dimethoxy-2-phenylbenzonitrile 0166 The subtitle compound was prepared from the product of step (e) by the method of Example 1(b). The crude product was purified on silica gel, eluting with EtOAc/hexane (1/1, v/v) to give the subtitle compound (60%) as a light yellow solid. Rf 0.40 (EtOAc/hexane 1/1, v/v). MS m/z 272 (MNH4). Found: C, 70.30; H, 5.50; N, 10.80; C15H14N2O2 0.1.H2O requires C, 70.37; H, 5.55; N, 10.95%. 0167 (g) 3,4-Dimethoxy-6-1-(morpholine-4-carbonyl)-1,4-diazepan-1-ylethylideneamino-2-phenylbenzonitrile 0168 The subtitle compound was prepared from the product of step (f) and Intermediate 4 by the method of Example 1(c). The crude product was purified on silica gel, eluting with CH2C2/4MeOH (95/5, v/v) to give the subtitle compound (87%) as a colourless foam. MS m/z 492 (MH). Found: C, 64.75; H, 6.74; N, 13.67; C27H33N5O4 0.15.CH2Cl2 requires C, 60.64; H, 6.61; N, 13.89%. 0169 (h) 4-Amino-6,7-dimethoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan 1-1-5-phenylquinoline 0170 The title compound was prepared from the product of step (g) using the method of Example 1(d). The crude product was purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v) to give the subtitle compound (46%) as a colourless foam. Rf 0.30 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 492 (MH). 1H NMR (CDCl3) : 2.05 (2H, m), 3.16 (4H, m), 3.35 (2H, m), 3.48 (3H, s), 3.63 (6H, m), 3.74 (2H, m), 3.87 (2H, bs), 3.97 (2H, m), 4.00 (3H, s), 5.68 (1H, s), 7.13 (1H, bs), 7.39 (2H, m), 7.45 (3H, m). Found: C, 63.02; H, 6.62; N, 13.35; C27H33N5O4 0.35.CH2Cl2 requires C, 63.02; H, 6.47; N, 13.44%.

Example 4 0171 4-Amino-6,7-dimethoxy-5-(4-fluorophenyl)-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0172 (a) 3,4-Dimethoxy-2-(4-fluorophenyl)-6-nitrobenzonitrile 0173 The subtitle compound was prepared by the method of Example 1(a) from the compound of Example 3(d) and 4-fluorophenylboronic acid. The subtitle compound (83%) was obtained as a light yellow solid. Rf 0.17 (toluene). MS m/z 303 (MH). Found: C, 59.19; H, 3.63; N, 8.84; C15H12N2O4 0.15.H2O requires C, 59.04; H, 3.71; N, 9.18%. 0174 (b) 6-Amino-34-dimethoxy-2-(4-fluorophenyl)benzonitrile 0175 The subtitle compound was prepared by the method of Example 1(b) from the product of step (a). The subtitle compound (85%) was obtained as a white solid. Rf 0.73 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 273 (MH). Found: C, 66.09; H, 4.79; N, 10.28; C15H13N2O2F requires C, 66.16; H, 4.81; N, 10.28%. 0176 (c) 3,4-Dimethoxy-2-(4-fluorophenyl)-6-1-4-(morpholine-4-carbonyl)-1,4-diazepan-1-ylethylideneaminobenzonitrile 0177 The subtitle compound was prepared by the method of Example 1(c) from the product of step (b) and Intermediate 4. The subtitle compound (83%) was obtained as a colourless solid. mp 174-176 C. Rf 0.12 (EtOAc). MS m/z 510 (MH). Found: C, 63.61; H, 6.35; N, 13.68; C27H32N5O4F requires C, 63.67; H, 6.33; N, 13.74%. 0178 (d) 4Amino-6,7-dimethoxy-5-(4-fluorophenyl)-24(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0179 The title compound was prepared by the method of Example 1(d) from the product of step (c). The crude product was purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (95/5/0.5, v/v) and then triturated with EtOAc and filtered to give the subtitle compound (41%) as a colourless solid. mp 189-192 C. Rf 0.15 (CH2Cl2/MeOH/0.88NH3 95/5/0.5, v/v). MS m/z 510 (MH). 1H NMR (CDCl3) : 2.05 (2H, m), 3.13 (4H, m), 3.32 (2H, m), 3.48 (3H, s), 3.63 (6H, m), 3.74 (2H, m), 3.77-4.23 (4H, bm), 4.00 (3H, s), 5.71 (1H, s), 7.15 (2H, m), 7.23 (1H, bs), 7.32 (2H, m). Found: C, 63.07; H, 6.41; N, 13.17; C27H32N5O4F 0.25.H2O 0.15EtOAc requires C, 62.82; H, 6.39; N, 13.28%.

Example 5 0180 (R/S)-4-Amino-2-4-(1,4-benzodioxan-2-carbonyl)-1,4-piperazin-1-yl-6,7-dimethoxy-5 0181 (a) 1-Acetyl-4-(t-butyloxycarbonyl)piperazine 0182 The subtitle compound was prepared by the methods of Intermediates 1 and 2 but using piperazine in place of homopiperazine and acetyl chloride in place of 4-morpholinecarbonyl chloride. 0183 (b) 6-1-4-(t-Butyloxycarbonyl)-1,4-piperazin-1-ylethylideneamino-3,4-dimethoxy-2-phenylbenzonitrile 0184 The subtitle compound was prepared by the method of Example 1(c) from the compound of Example 3(f) and the product of step (a). The crude product was purified on silica gel, eluting with CH2Cl2/MeOH (97/3, v/v). The subtitle compound (96%) was obtained as a foam. Rf 0.35 (CH2Cl2/MeOH 95/5, v/v). MS m/z 465 (MH). 0185 (c) 4-Amino-2-4-(t-butyloxycarbonyl)-1,4-piperazin-1-yl-6,7-dimethoxy-5-phenylquinoline 0186 To a solution of the product of step (b) (270 mg, 0.58 mmol) in DMSO (3 ml) was added KOH flake (33 mg, 0.58 mmol) and the reaction mixture heated to 90 C. for 4 h after which time the reaction was cooled, poured onto H2O and extracted with EtOAc (3). The combined organic layers were dried over MgSO4 and evaporated under reduced pressure to give the subtitle compound as a foam (65 mg, 24%). Rf 0.15 (CH2Cl2/MeOH 95/5, v/v). MS m/z 465 (MH). 0187 (d) 4-Amino-6,7-dimethoxy-5-phenyl-2-(1,4-piperazin-1-yl)quinoline 0188 HCl was bubbled through a solution of the product of step (c) (580 mg, 1.25 mmol) in CH2Cl2 at 0 C. After 15 min the reaction mixture was evaporated under reduced pressure and the residue was purified on silica gel, eluting initially with CH2Cl2/MeOH/0.88NH3 (92/7/1, v/v) followed by CH2Cl2/MeOH/0.88NH3 (90/10/1) to give the subtitle compound as a light brown foam (380 mg, 84%). Rf 0.16 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). MS m/z 365 (MH). 0189 (e) (R/S)-4-Amino-2-4-(1,4-benzodioxan-2-carbonyl)-1,4-piperazin-1-yl-6,7-dimethoxy-5-phenylquinoline 0190 (R/S)-1,4-Benzodioxan-2-carboxylic acid (50 mg, 0.28 mmol) was added to a solution of 1-hydroxybenzotriazole monohydrate (40 mg, 0.30 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (70 mg, 0.38 mmol) in CH2Cl2. This was followed by the sequential addition of 4-methylmorpholine (0.6 ml, 0.55 mmol) and the product of step (d) (100 mg, 0.28 mmol) and the reaction mixture was stirred at room temperature under N2 for 20 h after which time it was washed with H2O, saturated aqueous sodium bicarbonate and then saturated brine. The organic layer was separated, dried over MgSO4 and evaporated under reduced pressure. The crude product was purified on silica gel, eluting initially with EtOAc/hexane (1/1, v/v) followed by EtOAc to give the title compound as a foam (120 mg, 79%). Rf 0.30 (EtOAc/hexane 1/1, v/v). MS m/z 527 (MH). 1H NMR (CDCl3) : 3.41-4.05 (2H, b) 3.52 (3H, s), 3.73 (4H, m) 3.90 (4H, m), 4.00 (3H, s), 4.35 (1H, dd), 4.50 (1H, dd), 4.87 (1H, dd), 5.80 (1H, s), 6.89 (4H, m), 7.16 (1H, m), 7.42 (5H, m). Found: C, 66.08; H, 5.94; N, 9.64; C30H30N4O5 0.5.EtOAc 0.5.H2O requires C, 66.25; H, 6.04; N, 9.66%.

Example 6 0191 4-Amino-2-4-(furan-2-carbonyl)-1,4-piperazin-1-yl-6,7-dimethoxy-5-phenylquinoline 0192 The title compound was prepared by the method of Example 5(e) from the compound of Example 5(d) and 2-furancarboxylic acid. The title compound (74%) was obtained as a foam. Rf 0.30 (EtOAc/hexane 1/1, v/v). MS m/z 459 (MH). 1H NMR (CDCl3) : 3.414.05 (2H, b), 3.52 (3H, s), 3.73 (4H, m), 3.90 (4H, m), 4.00 (31H, s), 4.35 (114, dd), 4.50 (1H, dd), 4.87 (1H, dd), 5.80 (1H, s), 6.89 (4H, m), 7.16 (1H, m), 7.42 (5H, m). Found: C, 65.03; H, 5.92; N, 11.03; C30H30N4O5 0.4.EtOAc H2O requires C, 64.73; H, 6.10; N, 10.94%.

Example 7 0193 (R/S)-4-Amino-6,7-dimethoxy-5-phenyl-2-4-(tetrahydrofuran-2-carbonyl)-j 0.4-piperazin-1-ylquinoline 0194 The title compound was prepared by the method of Example 5(e) from the compound of Example 5(d) and (R/S)-tetrahydrofuran-2-carboxylic acid. The crude product was purified on silica gel eluting with CH2Cl2/MeOH/0.88NH3 (95/4.5/0.5, v/v) to give the title compound (53%) as a white foam. Rf 0.45 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). MS m/z 463 (MH). 1H NMR (CDCl3) : 1.82-2.05 (3H, m), 2.35 (11H, m), 3.20-4.00 (12H, m), 3.48 (3H, s), 4.00 (3H, s), 4.63 (1H, m), 5.78 (1H, s), 7.10 (1H, s), 7.35-7.48 (5H, m). Found: C, 65.57; H, 6.51; N, 11.60; C26H30N4O4 0.2.CH2Cl2 requires C, 65.62; H, 6.39; N, 11.68%.

Example 8 0195 4-Amino-6,7-dimethoxy-2-4-(furan-2-carbonyl)-1,4-diazepan-1-yl-5-phenylquinoline 0196 (a) 1-Acetyl-4-(t-butyloxycarbonyl)-1,4-diazepane 0197 The subtitle compound was prepared by the methods of Intermediates 1 and 2 but using acetyl chloride in place of 4-morpholinecarbonyl chloride. The subtitle compound (82%) was obtained as a yellow oil. Rf 0.28 (CH2Cl,/MeOH 95/5, v/v). MS m/z 243 (MH). 0198 (b) 6--4-(t-Butyloxycarbonyl)-1,4-diazepan-1-ylethyhlideneamino-3,4-dimethoxy-2-phenylbenzonitrile 0199 The subtitle compound was prepared by the method of Example 1(c) from the compound of Example 3(f) and the product of step (a). The subtitle compound (41%) was obtained as a pale yellow foam. Rf 0.21 (CH2Cl2/MeOH 97.5/2.5, v/v). MS m/z 479 (MH). 0200 (c) 4-Amino-2-4-(t-butyloxycarbonyl)-1,4-diazepan-1-yl-6,7-dimethoxy-5 phenylquinoline 0201 The subtitle compound was prepared by the method of Example 1(d) from the product of step (b). The subtitle compound (63%) was obtained as a pale orange foam. Rf 0.51 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). MS m/z 479 (MH). 0202 (d) 4-Amino-6,7-dimethoxy-2-(1,4-diazepan-1-yl)-5-phenylquinoline 0203 The subtitle compound was prepared by the method of Example 5(d) from the product of step (c). The subtitle compound was obtained in quantitative yield as a pale orange solid. Rf 0.07 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). MS m/z 379 (MH). 0204 (e) 4-Amino-6,7-dimethoxy-2-4-(furan-2-carbonyl)-1,4-diazepan-1-yl-5-phenylquinoline 0205 The title compound was prepared by the method of Example 5(e) from the product of step (d) and 2-furancarboxylic acid. The product was purified by slurrying in EtOAc to give the title compound (72%) as a white solid. Rf 0.58 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). MS m/z 473 (MH). 1H NMR (CDCl3) : 2.10 (2H, m), 3.50 (3H, s), 3.74 (4H, m), 3.81 (2H, m), 4.00 (8H, m), 5.71 (1H, s), 6.45 (1H, s), 7.01 (1H, bs), 7.65 (1H, bs), 7.44 (5H, m). Found: C, 67.57; H, 5.90; N, 11.63; C27H28N4O4 0.5H2O requires C, 67.34; H, 6.07; N, 11.63%.

Example 2 0206 4-Amino-6,7-dimethoxy-5-phenyl-2-4-(tetrahydropyran-4-carbonyl)-1,4-diazepan-1-ylquinoline 0207 The title compound was prepared by the method of Example 5(e) from the compound of Example 5(d) and tetrahydropyran-4-carboxylic acid. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH (90/10, v/v) to give the title compound (44%) as a white solid. Rf 0.41 (CH2Cl21MeOH/0.88NH3 90/10/1, v/v). MS m/z 491 (MH). 1H NMR (CDCl3) : 1.74 (1H, m) 1.84-2.15 (3H, m), 2.68 (1H, m), 3.21 (1H, m), 3.50 (8H, m), 3.80 (7H, m), 4.01 (5H, m), 5.68 (1H, s), 7.65 (1H, bs), 7.21-7.55 (6H, m). Found: C, 66.97; 0208 H, 7.09; N, 10.77; C28H34N4O4 0.75H2O requires C, 66.71; H, 7.10; N, 11.11%. 0209 Example 10 0210 4-Amino-5-(,4-chlorophenyl)-6,7-dimethoxy-2-4-(4-morpholinecarbonyl-1,4-diazepan-1-ylquinoline 0211 (a) 6-Amino-3,4-dimethoxy-2-iodobenzonitrile 0212 The subtitle compound was prepared by the method of Example 2(b) from the compound of Example 3(d). The subtitle compound (81%) was obtained as a colourless solid. Rf 0.55 (EtOAc/hexane 1/1, v/v). MS m/z 322 (MNH4). 0213 b) 3,4-Dimethoxy-2-iodo-6-1-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylethlideneaminobenzonitrile 0214 The subtitle compound was prepared by the method of Example 1(c) from the product of step (a) and Intermediate 4. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH (97/3, v/v) to give the subtitle compound (87%) as a colourless solid. Rf 0.15 (CH2Cl2). MS m/z 542 (MH). Found: C, 46.00; H, 5.17; N, 12.44; C21H28N5O4I 0.1.CH2Cl2 requires C, 46.08; H, 5.17; N, 12.74%. 0215 (c) 4-Amino-6,7-dimethoxy-5-iodo-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0216 The subtitle compound was prepared by the method of Example 1(d) from the product of step (b) except that the reaction was carried out in THF/DMPU (5/1, v/v). The crude product was purified on silica gel, eluting with CH2Cl2MeOH (98/2, v/v). The subtitle compound (65%) was obtained as a light brown solid. Rf 0.50 (CH2Cl,/MeOH/0.88NH3 90/10/1, v/v). MS m/z 542 (MH). Found: C, 45.71; H, 5.26; N, 12.44; C21H28N5O4I0.25.CH2Cl2 requires C, 45.37; H, 5.07; N, 12.46%. 0217 (d) 4-Amino-5-(4-chlorophenyl)-6,7-dimethoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0218 The title compound was prepared by the method of Example 1(a) from the product of step (c) 0219 and 4-chlorophenylboronic acid. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v). The title compound (40%) was obtained as a pale yellow foam. Rf 0.45 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 526, 528 (MH). 1H NMR (CDCl3) : 2.06 (2H, m), 3.15 (4H, m), 3.35 (2H, m), 3.50 (3H, s), 3.53-3.68 (6H, m), 3.74 (2H, m), 3.97 (5H, m), 4.32 (2H, bs), 5.71 (1H, s), 7.29 (2H, d), 7.45 (2H, d), 7.69 (1H, bs). Found: C, 57.34; H, 5.71; N, 10.97; C27H32N5O4Cl 0.67.CH2Cl2 requires C, 57.02; H, 5.76; N, 12.02%.

Example 11 0220 4-Amino-5-(3,5-dichlorophenyl)-6,7-dimethoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0221 The title compound was prepared by the method of Example 1(a) from the compound of Example 10(c) and 3,5-dichlorophenylboronic acid. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v). The title compound (24%) was obtained as a pale yellow foam. Rf 0.50 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 560, 562, 564 (MH). 1H NMR (CDCl3) : 2.06 (2H, m), 3.15 (4H, m), 3.35 (2H, m), 3.55 (3H, s), 3.65 (6H, m), 3.74 (2H, m), 3.99 (7H, m), 5.76 (1H, s), 7.10-7.55 (3H, m), 7.45 (1H, s). Found: C, 54.04; H, 5.31; N, 10.70; C27H32N5O4Cl2 0.6.CH2Cl2 0.6.MeOH requires C, 53.64; H, 5.49; N, 11.10%.

Example 12 0222 4-Amino-6,7-dimethoxy-5-(4-methoxyphenyl)-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0223 The title compound was prepared by the method of Example 1(a) from the compound of Example 10(c) and 4-methoxyphenylboronic acid. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH (95/5, v/v). The title compound (30%) was obtained as a pale yellow foam. Rf 0.20 (CH2Cl2/MeOH 9/1, v/v). MS m/z 522 (MH). 1H NMR (CDCl3) : 2.06 (2H, m), 3.16 (4H, m), 3.35 (2H, m), 3.50 (3H, s), 3.53-3.80 (8H, m), 3.80-4.13 (4H, m), 3.90 (6H, s), 5.71 (1H, bs), 7.00 (2H, d), 7.06 (1H, bs), 7.31 (2H, d). Found: C, 61.75; H, 6.63; N, 12.34; C28H35N5O5 0.2.CH2Cl2 0.7.H2O requires C, 61.45; H, 6.73; N, 12.71%.

Example 13 0224 4-Amino-5-35-bis(trifluoromethyl)phenyl-6,7-dimethoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0225 The title compound was prepared by the method of Example 1(a) from the compound of Example 10(c) and 3,5-bis(trifluoromethyl)phenylboronic acid. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v). The title compound (24%) was obtained as a pale yellow foam. Rf 0.50 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 628 (MH). 1H NMR (CDCl3) : 2.06 (2H, m), 3.16 (4H, m), 3.35 (2H, m), 3.48 (3H, s), 3.61 (6H, m), 3.77 (2H, m), 4.00 (7H, m), 5.80 (1H, s), 7.10 (1H, bs), 7.84 (2H, s), 7.95 (1H, s). Found: C, 53.51; H, 5.06; N, 10.03; C29H31N5O4F6 0.4.CH2Cl2 0.3.MeOH requires C, 53.10; H, 4.92; N, 10.43%.

Example 14 0226 4-Amino-6,7-dimethoxy-2-444-morpholinecarbonyl)-1,4-diazepan-1-yl-5-(4-trifluoromethyl)phenylquinoline 0227 The title compound was prepared by the method of Example 1(a) from the compound of Example 10(c) and 4-(trifluoromethyl)phenylboronic acid. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v). The title compound (10%) was obtained as a pale yellow foam. Rf 0.45 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 560 (MH). 1H NMR (CDCl3) : 2.06 (2H, m), 3.03-4.13 (2H, b), 3.13 (4H, m), 3.34 (2H, m), 3.48 (3H, s), 3.65 (6H, m), 3.76 (2H, m), 4.03 (5H, m), 5.74 (1H, s), 7.16 (1H, bs), 7.50 (2H, d), 7.71 (2H, d). Found: C, 56.46; H, 5.78; N, 11.43; C28H32N5O4F3 0.5.CH2Cl2 requires C, 56.85; H, 5.52; N, 11.63%.

Example 15 0228 4-Amino-5-(3-chlorophenyl)-6,7-dimethoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0229 The title compound was prepared by the method of Example 1(a) from the compound of Example 10(c) and 3-chlorophenylboronic acid. The crude product was purified on silica gel, eluting with CH2Cl2/MeOH/0.88 NH3 (90/10/1, v/v) followed by trituration with ether. The title compound (43%) was obtained as a colourless foam. Rf 0.34 (CH2Cl2/MeOH/0.88 NH3 90/10/1, v/v); MS in/z 526, 528 (MH). 1H NMR (CDCl3) 2.06 (2H, m), 3.15 (4H, m), 3.35 (2H, m), 3.52 (3H, s), 3.40-3.80 (8H, m), 3.99 (7H, m), 5.77 (1H, s), 7.10-7.50 (4H, m), 7.23 (1H, s). Found: C, 59.82; H, 6.58; N, 11.96. C27H32N5O4Cl 0.25.CH2Cl2 0.5.ether requires C, 60.11; H, 6.47; N, 11.99%.

Example 16 0230 4-Amino-6,7-dimethoxy-2-4-(4-morpholinecarbonyl-1,4-diazepan-1-yl-5 0231 (a) 2,4-Dichloro-6,7-dimethoxy-5-nitroquinazoline 0232 To a suspension of 2,4-dichloro-6,7-dimethoxyquinazoline (30.0 g, 0.12 mol) in acetonitrile (550 ml) at 0 C. was added nitronium tetrafluoroborate (25.9 g, 0.19 mol) portionwise over 15 min. The reaction was stirred for 0.75 h and then evaporated under reduced pressure. The resulting solid was suspended in a mixture of saturated aqueous sodium bicarbonate and EtOAc and the solid filtered, dissolved in CH2Cl2, dried over MgSO4 and evaporated to give the subtitle compound as a pale yellow solid (27 g). Further material was obtained by separating the organic layer of the filtrate, washing with H2O (1), saturated brine (1), drying over MgSO4 and filtering through a pad of silica. Subsequent evaporation under reduced pressure, trituration with EtOAc and filtration gave the subtitle compound as a pale yellow solid (3.9 g, overall yield 88%). Rf 0.24 (ether/hexane 1/1, v/v). 0233 (b) 2,4-Dihydroxy-6,7-dimethoxy-5-nitroquinazoline 0234 The product of step (a) (27.3 g, 90 mmol) was suspended in a mixture of glacial acetic acid (150 ml) and H2O (5 ml) and the reaction mixture was heated to 150 C. for 0.5 h after which time a further portion of H2O (5 ml) was added and heating continued. After a total of 1.5 h heating, a third portion of H2O (5 ml) was added and heating maintained for a further 0.5 h. The reaction mixture was then cooled and the solid was filtered, washed with ether and dried in vacuo at 80 C. to give the subtitle compound as a pale yellow solid (22.2 g, 93%). Rf 0.38 (EtOAc/MeOH 95/5, v/v). MS m/z 285 (MNH4). 0235 (c) 5-Amino-2,4-dihydroxy-6,7-dimethoxyquinazoline 0236 A mixture of the product of step (b) (35.0 g, 0.13 mol) and 10% palladium on carbon (4.0 g) was suspended in glacial acetic acid (200 ml) and hydrogenated at 50 psi (3.4 atm) and 50 C. for 2.5 days. The reaction was then cooled, suspended in MeOH/CH2Cl2 (1/1,v/v, 1L) and filtered. The residue was transferred to a soxhlet apparatus and continually extracted with MeOH for 3 days. Evaporation afforded a grey solid which was dissolved in 2N NaOH, filtered through a pad of silica, washing with H2O. The filtrate was then acidified with concentrated HCl. The resulting precipitate was isolated by filtration, washing sequentially with H2O and acetone, then dried in vacuo at 60 C. to give the subtitle compound as a white solid (22.7 g, 73%). Rf 0.42 (EtOAc/MeOH 95/5, v/v). MS m/z 238 (MH). 0237 (d) 2,4-Dihydroxy-6,7-dimethoxy-5-iodoquinazoline 0238 To a suspension of the product of step (c) (5.5 g, 23.2 mmol) in concentrated HCl (10 ml) at 10 C. was added H2O (10 ml), followed by an aqueous solution of sodium nitrite (2.4 g, 34.8 mmol in 10 ml), the temperature being maintained below 0 C. The resultant yellow diazonium salt was cautiously added to a solution of potassium iodide (40.0 g, 0.23 mol), copper (I) iodide (4.4 g, 23 mmol) in H2O (100 ml) heated to 90 C. and heating was maintained after the addition was complete until gas evolution ceased. The mixture was then cooled, filtered and the solid residue washed sequentially with H2O and aqueous sodium thiosulphate. The crude product was purified on silica gel, eluting initially with EtOAc/MeOH (95/5, v/v) followed by EtOAc/MeOH/AcOH (95/5/1, v/v) affording a solid which was suspended in MeOH and filtered to give the subtitle compound as a yellow/orange solid (2.2 g, 27%) which was contaminated with the compound of step (b) (0.4 g). Rf 0.16 (CH2Cl2/MeOH 95/5, v/v). MS m/z 366 (MNH4). 0239 (e) 2,4-Dihydroxy-6,7-dimethoxy-5-phenylquinazoline 0240 The subtitle compound was prepared by the method of Example 1(a) from the product of step (d) (5.7/1 mixture of compounds, w/w) and phenylboronic acid. The crude product was purified on silica gel eluting with CH2Cl2/MeOH (95/5, v/v) to give the subtitle compound (95%) as an orange powder which was contaminated (5% w/w) with the compound of step (b). Rf 0.16 (CH2Cl2/MeOH 95/5, v/v). MS m/z 299 (MH). 0241 (f) 2,4-Dichloro-6,7-dimethoxy-5-phenylquinazoline 0242 The mixture produced in step (e) (95/5, w/w, 1.75 g, 5.6 mmol of the subtitle compound of step (e)) was suspended in POCl3 (10 ml, 16.5 g, 109 mmol) and the mixture treated with N,N-dimethylaniline (1.86 ml, 1.79 g, 14.7 mmol) and heated at reflux for 1.5 h. After cooling, excess POCt3 was evaporated under reduced pressure and the residue azeotroped with toluene (2) then partitioned between EtOAc and H2O. The organic layer was separated and washed sequentially with H2O (3), saturated brine (1), dried over MgSO4 and filtered through a pad of silica, washing with EtOAc to give, on evaporation, the subtitle compound as a yellow gum. Rf 0.83 (EtOAc). 0243 (g) 4-Amino-2-chloro-6,7-dimethoxy-5-phenylquinazoline 0244 The product of step (f) was suspended in a saturated solution of ammonia in MeOH and the reaction was stirred under N2 for 3 h after which time CH2Cl2 was added until all the solid present dissolved. The reaction mixture was then stirred for a further 2.5 days at room temperature, the solvent removed under reduced pressure and the resulting solid suspended in MeOH and isolated by filtration, washing with ether and then drying in vacuo at 60 C. This gave the subtitle compound as a white solid (1.12 g, 65% from the product of step (e)). Rf 0.39 (EtOAc). MS m/z 316, 318 (MH). 0245 (h) 4-Amino-6,7-dimethoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-5-phenylquinazoline 0246 To a solution of the product of step (g) (200 mg, 0.63 mmol) in n-BuOH (10 ml) was added Intermediate 3 (250 mg, 1.0 mmol) and triethylamine (0.22 ml, 160 mg, 1.58 mmol) and the reaction heated to 100 C. under N2 for 18 h. After cooling, the reaction mixture was partitioned between EtOAc and 2N NaOH, the organic layer separated, washed with saturated brine, dried over MgSO4 and evaporated under reduced pressure. The crude product was purified on silica gel, eluting with EtOAc and the resulting solid was then suspended in a minimal volume of EtOAc, filtered and dried in vacuo at 60 C. to give the title compound as a white solid (180 mg, 58%). Rf 0.40 (EtOAc/MeOH 95/5, v/v). MS m/z 493 (MH). 1H NMR (CDCl3) : 2.00 (2H, m), 3.16 (4H, m), 3.35 (2H, m), 3.48 (3H, s), 3.52 (2H, m), 3.65 (4H, m), 3.84 (2H, m), 3.94 (2H, m), 3.97 (3H, s), 4.52 (2H, bs), 6.92 (1H, s), 7.35 (2H, m), 7.40-7.52 (3H, m). Found: C, 62.82; 6.52; N, 16.70; C26H32N6O4 0.25.H2O requires C, 62.85; H, 6.59; N, 16.91%. 0247 Alternative Route to 4-Amino-2-chloro-6,7-dimethoxy-5-phenylquinazoline the Compound of Step (g)0248 (Aa) 4-Amino-6,7-dimethoxy-2-hydroxy-5-phenylquinazoline 0249 Trifluoroacetic acid (8.1 ml, 0.10 mol) was added dropwise to a stirred solution of the compound of Example 3(f) (12.9 g, 0.051 mol) and sodium cyanate (6.6 g, 0.10 mol) in CH2Cl2 (200 ml) and the reaction was left to stir at room temperature under N2 for 18 h, after which time an orange precipitate was formed. The solid was isolated by filtration, washing with hexane, dried by suction and then combined with a mixture of 2N aqueous NaOH (250 ml) and MeOH (250 ml). The mixture was heated on a steam bath until the solid had dissolved and after cooling, the solution was acidified with concentrated HCl and warmed on a steam bath until dissolution was complete. The solution was cooled and neutralised with K2CO3 and the precipitated solid was isolated by filtration, washing with H2O, MeOH, CH2Cl2 and finally ether to give the subtitle compound as a colourless solid (12.4 g, 82%). MS ml/z 298 (MH). 0250 (Ab) 4-Amino-2-chloro-6,7-dimethoxy-2-hydroxy-5-phenylquinazoline 0251 DMF (6.4 ml, 0.083 mol) was added dropwise to POCl3 (19.3 ml, 0.21 mol). Once the mixture had cooled, the product of step (Aa) (12.34 g, 0.042 mol) was added and the temperature was maintained at 90 C. for 3 h and then stirred at room temperature for 18 h after which time, the reaction was cautiously quenched with ice. The reaction was then basified with excess 2N NaOH, the temperature was allowed to reach 60 C. and this was maintained for 1 h. The reaction mixture was then cooled and the precipitate was isolated by filtration and dried in vacuo at 60 C. to afford the subtitle compound as an off-white solid (10.2 g, 78%).

Example 17 0252 4-Amino-6,7-dimethoxy-2-4-1-(3S,4S-dihydroxypyrrolidine)carbonyl-1,4-diazepan-1-yl-5-phenylquinazoline Hydrochloride 0253 (a) N-Benzyl-3S,4S-bis(t-butyldimethylsilyloxy)pyrrolidine 0254 The subtitle compound was prepared by the method of Arakawa et al Chem. Pharm. Bull., 2, 2219 (1991). 0255 (b) 1-1-(3S,4S-Bis(t-butyldimethylsilyloxy)pyrrolidine)carbonyl-1,4-diazepane 0256 To a stirred solution of the product of step (a) (12.0 g, 28 mmol) in toluene (150 ml) was added a solution of phosgene in toluene (1.93M, 18 ml, 34 mmol). The resulting suspension was heated at reflux for 6 h after which time the solvent was removed under reduced pressure and the residue redissolved in THF (200 ml). The solution was cooled to 0 C. and then added to a solution of homopiperazine (15.0 g, 150 mmol) in THF (100 ml). The resultant solution was heated to 60 C. for 1 h and stirred at room temperature for 18 h. The solvent was removed under reduced pressure and the residue partitioned between CH2Cl2 (200 ml) and H2O (10 ml). The organic layer was washed with saturated brine (50 ml) and dried over MgSO4. The solvent was evaporated under reduced pressure and the crude product was purified on silica gel, eluting initially with CH2Cl2/MeOH/0.88NH3 (96/3.5/0.5, v/v) followed by CH2Cl2/MeOH/0.88NH3 (92/7/1, v/v) to give the subtitle compound as an oil which slowly crystallised on standing (7.64 g, 60%). Rf 0.2 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). MS m/z 459 (MH). 0257 (c) 4-Amino-6,7-dimethoxy-2-4-1-(3S,4S-dihydroxypyrrolidine)carbonyl-1,4-diazepan-1-yl-5-phenylquinazoline Hydrochloride 0258 To a solution of the compound of Example 16(g) (200 mg, 0.63 mmol) and triethylamine (0.22 ml, 1.7 mmol) in n-BuOH (10 ml) was added the product of step (b) (350 mg, 0.76 mmol) and the reaction mixture was heated to 100 C. under N2 for 18 h. The reaction was then cooled and evaporated under reduced pressure and HCl was bubbled through a solution of the residue in CH2Cl2 for 20 min. The reaction mixture was then evaporated under reduced pressure, partitioned between EtOAc and H2O and the aqueous layer extracted repeatedly with EtOAc. The aqueous layer was then basified with 2N NaOH, extracted with CH2Cl2 and the organic layer dried over MgSO4 and evaporated to give a gum which was treated with ethereal HCl. The resulting precipitate was filtered, washing with ether, to give the title compound as a white foam, (210 mg, 61%). Rf 0.1 (CH2Cl2/MeOH 95/5, v/v). MS m/z 509 (MH). 1H NMR (CDCl3) : 1.58-2.23 (2H, bm), 3.03-4.35 (2H, bm), 3.23 (4H, m), 3.48 (3H, s), 3.52 (3H, m), 3.71 (4H, m), 4.02 (3H, s), 4.11 (4H, m), 5.16 (1H, bs), 7.32 (2H, m), 7.52 (3H, m), 8.45 (1H, s), 12.59 (1H, bs). Found: C, 55.42; H, 6.32; N, 13.90; C26H32N6O5 HCl H2O 0.5EtOAc requires C, 55.40; H, 6.48; N, 13.84%.

Example 18 0259 4-Amino-6,7-dimethoxy-2-4-(3-hydroxyazetidine-1-carbonyl)1,4-diazepan-1-yl-5-phenylquinazoline Hydrochloride 0260 A suspension of the compound of Example 16(g) (205 mg, 0.65 mmol) in n-BuOH was treated with homopiperazine (1.3 g, 13.0 mmol) and the reaction heated to reflux under N2 for 18 h. After cooling, the reaction mixture was partitioned between EtOAc and 2N NaOH, the organic layer separated, washed with H2O (5) then evaporated under reduced pressure azeotroping with toluene (3) to give a foam (280 mg). This was dissolved in CH2Cl2 (50 ml), triethylamine (0.11 ml, 0.78 mmol) was added and the solution stirred with 4 molecular sieves for 2 h before adding dropwise over 1 h to a solution of triphosgene (68.0 mg, 0.23 mmol) in CH2Cl2 (10 ml) at 5 C. This was then treated with a fine suspension of 2-azetidinol prepared according to method of Chatterjee et al, J. Chem. Soc. Chem. Commun., 93 (1968) (142 mg, 1.3 mmol) and triethylamine (0.32 ml, 2.3 mmol) in THF, pre-stirred with 4 molecular sieves for 2 h. The reaction mixture was subsequently stirred for 3 days at room temperature under N2 after which time it was partitioned between CH2Cl2 and 1N NaOH, the organic layer washed with saturated brine, dried over MgSO4 and evaporated. Purification of the crude product on silica gel, eluting initially with EtOAc/MeOH (95/5, v/v) then CH2Cl2/MeOH/0.88NH3 (90/10/1) followed by treatment with ethereal HCl gave the title compound as a white foam (153 mg, 46%). MS m/z 479 (MH). 1H NMR (CDCl3) : 1.61, 1.84 (2H, two m), 3.10 (1H, m), 3.18-3.40 (3H, m), 3.40-3.73 (4H, m), 3.55 (3H, s), 3.90 (3H, bm), 4.10 (3H, s), 4.35 (2H, bm), 5.03 (0.5H, bm), 5.21 (1H, bs), 5.26 (0.5H, bm), 5.66 (0.5H, bm), 6.58 (0.5H, bm), 7.40 (2H, m), 7.55 (3H, m), 8.50 (1H, bs), 12.97 (1H, bs). Found: C, 53.94; H, 6.40; N, 14.06; C25H30N6O4 HCl 0.4.ether 2.5H2O requires C, 54.14; H, 6.78; N, 14.25%.

Example 19 0261 4-Amino-2-4-(1,4-benzodioxan-2-carbonyl)-1,4-piperazin-1-yl-6,7-dimethoxy-5-phenylquinazoline 0262 (a) 4-Amino-6,7-dimethoxy-5-phenyl-2-(1,4-piperazin-1-yl)quinazoline 0263 To a stirred suspension of the compound of Example 16(g) (420 mg, 1.3 mmol) in n-BuOH (10 ml) was added piperazine (2.29 g, 27 mmol) and the reaction heated to 80 C. for 3 h. After cooling, the reaction mixture was partitioned between EtOAc and 2N NaOH, the organic layer was washed sequentially with H2O (2) and saturated brine (1), then dried over MgSO4 and evaporated under reduced pressure. The residue was azeotroped with toluene (1) then CH2Cl2 (2) to give the subtitle compound as a foam (455 mg, 94%). Rf 0.4 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 366 (MH). 0264 (b) (R/S)-4-Amino-2-4-(1,4-benzodioxan-2-carbonyl)-1,4-piperazin-1-yl-6,7-dimethoxy-5-phenylquinazoline, 0265 The title compound was prepared by the method of Example 5(e) from the product of step (a) and (R/S)-1,4-benzodioxan-2-carboxylic acid. The title compound (61%) was obtained as a foam. Rf 0.69 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 528 (MH). 1H NMR (CDCl3) : 3.42-4.16 (8H, b) 3.48 (3H, s), 4.00 (3H, s), 4.35 (1H, dd), 4.48 (1H, dd), 4.87 (1H, dd), 5.80 (1H, s), 6.89 (4H, m), 6.97 (1H, s), 7.16 (1H, m), 7.39 (2H, m), 7.50 (3H, m). Found: C, 64.31; H, 5.58; N, 12.61; C29H29N5O5 0.2.EtOAc 0.5.H2O requires C, 64.54; H, 5.70; N, 12.63%.

Example 20 0266 4-Amino-6,7-dimethoxy-5-(4-fluorophenyl)-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinazoline 0267 (a) 2,4-Dichloro-6,7-dimethoxy-5-iodoquinazoline 0268 The subtitle compound was prepared by the method of Example 16(f) from the compound of Example 16(d). The subtitle compound was obtained as a solid (contaminated with 2,4,5-trichloroquinazoline). Rf 0.16 (hexane/EtOAc 4/1, v/v). 0269 (b) 4-Amino-2-chloro-6,7-dimethoxy-5-iodoquinazoline 0270 This was prepared by the method of Example 16(g) from the contaminated product of step (a). The subtitle compound (61% from the compound of Example 16(d)) was obtained as a yellow solid (contaminated with the 5-chloro analogue). Rf 0.11 (hexane/EtOAc 4/1, v/v). MS m/z 366 (MH). 0271 (c) 4-Amino-6,7-dimethoxy-5-iodo-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinazoline 0272 This was prepared by the method of Example 16(h) from the product of step (b) (3/2 mixture, w/w) and Intermediate 3. The crude product was purified on silica gel, eluting initially with hexane followed by EtOAc/hexane (1/1, v/v). The subtitle compound (28% based on the compound of step (b)) was obtained as an orange foam (contaminated with the 5-chloro analogue). Rf 0.41 (EtOAc). MS m/z 543 (MS). 0273 (d) 4-Amino-6,7-dimethoxy-5-(4-fluorophenyl)-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinazoline 0274 This was prepared by the method of Example 1(a) from the product of step (c) (1.2/1 mixture, w/w) and 4-fluorophenylboronic acid. The crude product was purified on silica gel, eluting initially with hexane/EtOAc (4/1, v/v) followed by EtOAc. The title compound (63% based on the compound of step (c)) was obtained as a white foam. Rf 0.18 (EtOAc). MS m/z 511 (MH). 1H NMR (CDCl3) : 2.00 (2H, m), 3.14 (4H, m), 3.35 (2H, m), 3.48 (3H, s), 3.55 (2H, m), 3.66 (4H, m), 3.84 (2H, m), 3.94 (2H, m), 3.97 (3H, s), 4.52 (2H, bs), 6.90 (1H, bs), 7.16 (2H, m), 7.32 (2H, m). Found: C, 60.91; H, 6.32; N, 15.73; C26H31N6O4F 0.2.EtOAc requires C, 60.90; H, 6.17; N, 15.91%.

Example 21 0275 4-Amino-6,7-dimethoxy-2-1-4-(4-morpholinecarbonyl)piperidine-5-phenylquinazoline 0276 The title compound was prepared by the method of Example 16(h) from the compound of Example 16(g) and 4-(4-morpholinecarbonyl)piperidine (see U.S. Pat. No. 4,022,791). The crude product was purified by column chromatography on silica gel, eluting with CH2Cl2/EtOH/0.88 NH3 (96/3.5/0.5, v/v). Recrystallisation from EtOAc gave the title compound (25%) as a colourless solid. Rf 0.10 (CH2Cl2/MeOH/0.88 NH3 96/3.5/0.5 v/v). MS m/z 478 (MH). 1H NMR (CDCl3) : 1.75-1.95 (4H, m), 2.70 (1H, m), 2.90 (2H, m), 3.50 (3H, s), 3.55-3.75 (8H, m), 4.00 (3H, s), 4.60 (2H, m), 6.95 (1H, bs), 7.40 (2H, m), 7.50 (3H, m). Found: C, 65.34; H, 6.56; N, 14.55. C26H31N5O4 requires C, 65.39; H, 6.54; N, 14.66%.

Example 22 0277 4-Amino-2-4-1-(3S,4S-dihydroxypyrrolidine)carbonyl)1,4-diazepan-1-yl-6,7-dimethoxy-5-phenylquinoline 0278 (a) 6-1(4-Benzyl)-1,4-diazepan-1-ylethylideneamino-3,4-dimethoxy-2-phenylbenzonitrile 0279 The subtitle compound was prepared by the method of Example 1(c) from the compound of Example 3(f) and 1-acetyl-4-benzyl-1,4-diazepane Sutton, J. Med. Chem., 13, 1026 (1970) to give the subtitle compound (83%) as an orange glass. Rf 0.36 (CH2Cl2/MeOH 95/5, v/v). MS m/z 469 (MH). 0280 (b) 4-Amino-2-(4-benzyl-1,4-diazepan-1-yl)-6,7-dimethoxy-5-phenylquinoline 0281 A solution of the product of step (a) (440 mg, 0.94 mmol) in dimethoxyethane (10 ml) was treated with potassium t-butoxide (316 mg, 2.82 mmol) and reaction mixture heated at reflux for 5 h. When cool, the mixture was partitioned between EtOAc and H2O. The organic layer was dried over MgSO4 and evaporated at reduced pressured to an oil. Trituration with MeOH and filtration gave the subtitle compound as a pale pink solid, (300 mg, 68%). Rf 0.39 (CH2Cl2/MeOH/0.88 NH3 92/7/1 v/v). 1H NMR (CDCl3) : 1.95(2H, m), 2.65(2H, m), 2.8(2H, m), 3.5(3H, s), 3.65(3H, s), 3.7-3.9(6H, m), 4.00(3H, s), 5.7(1H, s), 7.1(1H, bs), 7.2-7.35(5H, m), 7.4(5H, m). 0282 (c) 4-Amino-2-(1,4-diazepan-1-yl)-6,7-dimethoxy-5-phenylquinoline 0283 A mixture of the product of step (b) (700 mg, 1.5 mmol), palladium hydroxide (20%w/w, 140 mg) and acetic acid (0.17 ml, 3.0 mmol) in EtOH (30 ml) was hydrogenated at 345 kPa (50 psi) and room temperature for 18 h. The reaction was filtered through Arbocel and the filtrate evaporated under reduced pressure to yield the subtitle compound as a buff solid (487 mg, 86%). Rf 0.10 (CH2Cl2/MeOH/0.88 NH3 90/10/1, v/v). 1H NMR(CDCl3) : 1.95(2H, m), 2.85(2H, m), 3.06(2H, m), 3.50(3H, s), 3.75-3.85(6H, m), 4.0(3H, s), 5.7(1H, s), 7.15(1H, s), 7.45(5H, m). 0284 (d) 4-Amino-2-(4-chlorocarbonyl-1,4-diazepan-1-yl)-6,7-dimethoxy-5-phenylquinoline 0285 To a solution of triphosgene (128 mg, 0.43 mmol) in CH2Cl2 (10 ml) at 10 C. was added dropwise a solution of the product of step (c) (442 mg, 1.17 mmol) and triethylamine (0.195 ml, 142 mg, 1.4 mmol) in CH2Cl2 (20 ml) over 1 h. The mixture was stirred at 10 C. for a further 1 h and then evaporated under reduced pressure to yield the subtitle compound as a brown foam (514 mg, 100%) which was used without further treatment. 0286 (e) 4-Amino-2-4-1-(3S,4S-dihydroxypyrrolidine)carbonyl)-1,4-diazepan-1-yl-6,7-dimethoxy-5-phenylquinoline 0287 A mixture of the product of step (d) (257 mg, 0.58 mmol), 3S,4S-bis (t-butyldimethylsilyl-oxy)pyrrolidine Nagel, Angew. Chem. Int. Ed. Engl., 23, 435 (1984) (213 mg, 0.64 mmol) and triethylamine (0.098 ml, 71 mg, 0.7 mmol) in THF (20 ml) was refluxed for 18 h. When cool, the mixture was partitioned between EtOAc and aqueous saturated sodium hydrogen carbonate solution. The aqueous layer was washed again with EtOAc and finally CH2Cl2. The combined organics were dried over MgSO4 and evaporated at reduced pressure. The crude material was purified on silica gel eluting with a gradient eluent of 3-7% MeOH in CH2Cl2. The purified material was treated with a methanolic solution of HCl prepared by adding acetyl chloride (0.07 ml) cautiously to MeOH (3 ml) and stirred at room temperature for 2.5 h. The mixture was basified with aqueous saturated NaHCO3 and evaporated under reduced pressure. The residue was extracted with CH2Cl2, the extract evaporated under reduced pressure and the crude product purified on silica gel eluting with CH2Cl2/MeOH/0.88 NH3 (92/7/1, v/v) to yield the title compound (30 mg, 10%) as a colourless solid. Rf 0.25 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 508 MH. 1H NMR(d6-DMSO) : 1.87(2H, m), 3.12(2H, m), 3.34(3H, s), 3.4(2H, m), 3.52(3H, m), 3.68-3.9(8H, m), 4.6(2H, bs), 4.87(2H, m), 5.85(1H, s), 6.93(1H, s), 7.3(2H, m), 7.45(3H, m).

Example 23 0288 4-Amino-6,7-dimethoxy-2-4-(4-fluoropiperidinecarbonyl)-1,4-diazepan-1-yl-5-phenylquinoline 0289 A mixture of the compound of Example 22(d) (257 mg, 0.58 mmol), 4-fluoropiperidine hydrochloride, J. Org. Chem. 44, 771 (1979) (90 mg, 0.64 mmol) and triethylamine (0.18 ml, 1.29 mmol) in THF (20 ml) was heated at reflux for 18 h. When cool the reaction was evaporated under reduced pressure and then partitioned between EtOAc and saturated aqueous sodium bicarbonate. The organic layer was dried over MgSO4 and evaporated under reduced pressure. Purification on silica gel eluting with a gradient eluent of 3-7% MeOH in CH2Cl2 afforded the title compound as a foam (102 mg, 35%). Rf 0.31 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). MS m/z 508 (MH). NMR (CDCl3) : 1.75-1.95(4H, m), 2.05(2H, m), 3.1(2H, m), 3.35(4H, m), 3.45-4.05(12H, m), 4.70 and 4.85(1H, m), 5.70(1H, s), 7.1(1H, bs) 7.45(5H, m). Found: C, 64.54; H, 6.76; N, 12.59. C28H34N5O3F 0.5EtOAc 0.5.H2O requires C, 64.27; H, 7.01; N, 12.49%.

Example 24 0290 4-Amino-6,7-dimethoxy-2-4-(4-morpholinesulphonyl)-1,4-diazepan-1-yl-5-phenylquinzoline 0291 (a) 1-(t-Butyloxycarbonyl)-4-4-morpholinesulphonyl-1,4-diazepane 0292 The subtitle compound was prepared by the method of Intermediate 2 from Intermediate 1 and 4-morpholinesulphonyl chloride Repine et al J. Med. Chem., 34, 1935 (1991). The reaction mixture was partitioned between CH2Cl2 and 1N NaOH. The organic phase was washed again with 1N HCl, then H2O and dried over MgSO4 and evaporated under reduced pressure. Purification on silica gel eluting with CH2Cl2/MeOH/0.88 NH3 (98/1.25/0.25, v/v) initially and then (96/3.5.0.5, v/v) gave the subtitle compound as a gum (53%). Rf 0.44 (CH2Cl2/MeOH/0.88 NH3 96/3.5/0.5, v/v). MS m/z 350 (MH). 1H NMR(CDCl3) : 1.4(9H, s), 1.9(2H, m), 3.17(4H, m), 3.22(2H, m), 3.4(2H, m), 3.5(2H, m), 3.73(6H, m). 0293 (b) 1-(4-Morpholinesulphonyl)-1,4-diazepane Hydrochloride 0294 The subtitle compound was prepared by the method of Intermediate 3 from the product of step (a). The subtitle compound (97%) was obtained as a white solid. Rf 0.09 (CH2Cl2/MeOH/0.88 NH3 92/7/1, v/v). MS m/z 250 (MH). NMR(d6-DMSO) : 2.1(2H, m), 3.1(4H, m), 3.4(4H, m), 3.62(8H, m), 9.2(2H, b). 0295 (c) 1Amino-6,7-dimethoxy-2-4-(morpholinesulphonyl)-1,4-diazepan-1-yl-5-phenylquinazoline 0296 The title compound was prepared by the method of Example 16(h) from the product of step (b) and the compound of Example 16(g). The mixture was purified on silica gel eluting with 3% MeOH in CH2Cl2. Evaporation under reduced pressure and recrystallisation from EtOAc/hexane gave the title compound (33%) as a colourless solid. Rf 0.27 (CH2Cl2/MeOH 95/5 v/v). MS m/z 529 (MH). 1H NMR (CDCl3) : 2.03(2H, m), 3.08(4H, m), 3.37(2H, m), 3.47(3H, s), 3.53(2H, m), 3.63(4H, m), 3.9(2H, m), 3.95(2H, m), 3.98(3H, s), 4.56(2H, s), 6.9(1H, s), 7.37(2H, m), 7.44(3H, m). Found C, 56.23; H, 6.06; N, 15.56. C23H32N6O5S 0.5.H2O requires C, 56.42; H, 6.14; N, 15.79%.

Example 25 0297 4-Amino-2-(7-aminosulfonyl-1,2,3,4-tetrahydroisoquinolin-2-yl)-6,7-dimethoxy-5-phenylquinazoline 0298 To a solution of the compound of Example 16(g) (500 mg, 1.6 mmol) and triethylamine (0.66 ml, 4.8 mmol) in a mixture of n-BuOH (10 ml) and DMA (3 ml) was added 1,2,3,4 tetrahydroisoquinoline-7-sulfonamide hydrochloride (R1G. Pendleton et al, The Journal of Pharmacology and Experimental Therapeutics, 208, 24, 1979) (597 mg, 2.4 mmol) and the reaction mixture was heated to 100 C. under N2 for 18 h. The reaction was then cooled, partitioned between 2N aqueous NaOH and EtOAc, the organic layer was washed with H2O, dried over MgSO4 and evaporated under reduced pressure. The residue was triturated with ether/hexane and the resulting solid isolated by filtration to give the title compound as a light yellow solid, (360 mg, 46%). Rf 0.62 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 492 (MH). 1H NMR (D6-DMSO) : 2.87 (2H, dd), 3.37 (3H, s), 3.90 (3H, s), 4.00 (2H, dd), 4.94 (2H, s), 6.90 (1H, s), 7.20-7.40 (6H, m), 7.45-7.65 (6H, m). Found: C, 60.47; H, 5.39, N, 13.72; C25H25N5O4S 0.3.H2O requires C, 60.42; H, 5.19, N, 14.09%.

Example 26 0299 4-Amino-6,7-dimethoxy-5-phenyl-2-(3-pyridinemethylamino)quinazoline 0300 To a solution of the compound of Example 16(g) (300 mg, 0.95 mmol) and triethylamine (0.60 ml, 5.7 mmol) in a mixture of n-BuOH (10 ml) and DMA (2 ml) was added 3-(aminomethyl)pyridine and the reaction mixture was heated to 100 C. under N2 for 24 h after which time, a further portion of DMA (2 ml) was added and heating continued for a subsequent day. The reaction was then cooled, partitioned between H2O and CH2Cl2, the organic layer was washed with H2O, dried over MgSO4 and evaporated under reduced pressure. The residue was chromatographed on silica, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v) to give the title compound as a colourless foam, (65 mg, 18%). Rf 0.52 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 388 (MH). 1H NMR (CDCl3) S: 3.45 (2H, dd), 3.97 (3H, s), 4.65 (2H, bs), 4.71 (2H, bs), 5.40 (1H, bs), 6.94 (1H, s), 7.15-7.30 (2H, m), 7.39 (2H, m), 7.50 (3H, m), 7.71 (1H, d), 8.50 (1H, d), 8.61 (1H, s). Found: C, 65.48; H, 5.51, N, 16.68; C22H21N5O2 0.1.MeOH 0.25.CH2Cl2 requires C, 65.18; H, 5.36, N, 17.00%.

Example 27 0301 4-Amino-6,7-dimethoxy-5-(4-fluorophenyl)-2-4-(morpholinecarbonylamino)-1-propaneaminoquinoline 0302 To a solution of the compound of Example 4 (150 mg, 0.29 mmol) in THF (5 ml) at 0 C. under N2 was added a 1.5M solution of lithium diisopropylamide in cyclohexane (0.2 ml, 0.3 mmol) and the reaction was allowed to reach room temperature and stirred for 1 h. This was followed by the addition of further portions of lithium diisopropylamide (0.4 ml, 0.6 mmol) and a final portion of lithium diisopropylamide (0.2 ml, 0.3 mmol) after a further 2 h. The reaction was then stirred at room temperature for a further 3 h, after which time it was quenched with H2O, the product extracted into 2N aqueous HCl, the aqueous layer separated, neutralised with sodium bicarbonate, extracted with CH2Cl2 (3) dried over MgSO4 and evaporated under reduced pressure. The resulting residue was purified by chromatography on silica, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v) to give the title compound as an off-white solid (82 mg, 58%). Rf 0.17 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 484 (MH). 1H NMR (CDCl3) : 1.95 (2H, m), 3.27 (2H, m), 3.37 (2H, m), 3.48 (3H, s), 3.55 (2H, m), 3.65 (4H, m), 3.90 (5H, bm), 3.99 (3H, s), 5.08 (1H, m), 5.70 (1H, s), 7.03-7.23 (3H, in), 7.31-7.44 (2H, m). Found: C, 60.72; H, 6.37, N, 13.38; C25H30N5O4F 0.35.ether 0.7.H2O requires C, 60.73; H, 6.74, N, 13.41%

Example 28 0303 4-Amino-6,7-dimethoxy-5-(3-fluorophenyl)-2-L(4-morpholinecarbonyl)-1,4-diazepan-1-ylquinoline 0304 To a solution of the compound of Example 10(b) (200 mg, 0.37 mmol) and 3-fluorophenylboronic acid (62 mg, 0.44 mmol) in a mixture of toluene (9 ml), 1M aqueous Na2CO3 (1.5 ml) and EtOH (5 ml) was added tetrakis(triphenylphosphine)palladium (13 mg, 0.44 mmol) and the reaction was heated to reflux for 1 h. The reaction was then cooled, partitioned between EtOAc and H2O, the organic layer dried over MgSO4 and evaporated to afford a brown residue. This was dissolved in 1,2-dimethoxyethane, the solution purged with N2 and then potassium t-butoxide (124 mg, 1.1 mmol) was added and the reaction heated to reflux for 1 h. After cooling, the reaction mixture was partitioned between EtOAc and H2O, the organic layer was dried over MgSO4 and evaporated in vacuo. The product was purified by chromatography on silica gel, eluting with CH2Cl2/MeOH/0.88 NH3 (96/3.5/0.5, v/v) to afford the title compound as a brown foam (136 mg, 72%). Rf 0.39 (CH2Cl2/MeOH/0.88 NH3 92/7/1, v/v). MS n/z 510 (MH). 1H NMR (CDCl3) : 2.03 (2H, m), 3.16 (4H, m), 3.34 (2H, m), 3.50 (3H, s), 3.59 (2H, m), 3.65 (4H, m), 3.71 (2H, m), 3.80 (2H, bs), 3.94 (2H, m), 3.99 (3H, s), 5.74 (1H, s), 7.06 (1H, bs), 7.10-7.20 (3H, m), 7.41 (1H, s). Found: C, 62.70; H, 6.22; N, 13.18. C27H32N5O4F 0.5.H2O requires C, 62.53; H, 6.41; N, 13.50%.

Example 29 0305 4-Amino-6,7-dimethoxy-2-(1-methylpiperidin-4-yl)-5-phenylquinoline 0306 The title compound was prepared by the method of Example 5(e) from the compound of Example 8(d) and 1-methylpiperidine-4-carboxylic acid Rogers et a/Molecular Pharmacology 36, 333 (1989). The product was purified by chromatography on silica gel, eluting with EtOAc/diethylamine (90/10, v/v) to afford the title compound (63%) as an orange solid. Rf 0.15 (CH2Cl2/MeOH/0.88 NH3 92/7/1, v/v). MS m/z 504 (MH). 1H NMR (CDCl3) 8:1.35 (4H, m), 2.06 (2H, m), 2.23 (3H, s), 2.30 (2H, m), 2.42 (1H, m), 2.80-2.95 (2H, m), 3.50 (3H, s), 3.59 (2H, m), 3.78 (6H, m), 3.95-4.13 (2H, bs), 4.00 (3H, s), 5.68 (1H, s), 7.13 (1H, bs), 7.38 (2H, m), 7.45 (3H, m). Found: C, 67.03; H, 7.37; N, 12.87. C29H37N5O3 0.5.H2O 0.5.EtOAc requires C, 66.88; H, 7.60; N, 12.58%.

Example 30 0307 4-Amino-6,7-dimethoxy-2-3-(morpholinecarbonylamino)ethaneamino-5-phenylquinazoline 0308 (a) 4-Amino-2-(3-aminoethaneamino)-6,7-dimethoxy-5-phenylquinazoline 0309 This was prepared by the method of Example 16(h) from the compound of Example 16(g) and 10 mole equivalents of 1,2-ethanediamine, in the presence of catalytic potassium iodide. The subtitle compound (66%) was obtained as a colourless foam. Rf 0.42 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS ma/z 340 (MW). 0310 (b) 4-Amino-6,7-dimethoxy-2-3-(morpholinecarbonylamino)ethaneamino-5-phenylquinazoline 0311 A solution of the product of step (a) (343 mg, 1.0 mmol) in CH2Cl2 (3 ml) at 0 C. under N2 was treated with N-methylmorpholine (0.14 ml, 1.3 mmol) followed by the dropwise addition of a solution of 4-morpholinecarbonyl chloride (0.11 ml, 1.1 mmol) in CH2Cl2 (1 ml). The reaction was allowed to reach room temperature and stirred for 18 h. The reaction was then quenched with H2O, extracted with CH2Cl2, the organic layer separated, washed with saturated brine, dried over MgSO4 and evaporated. Purification on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether afforded the title compound as a colourless foam (185 mg, 34%). Rf 0.45 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 453 (MH). 1H NMR (CDCl3) : 3.32-3.80 (13H, m), 4.00 (5H, s), 5.34 (3H, b), 5.94 (1H, bs), 7.03 (1H, bs), 7.32 (2H, m), 7.55 (3H, m). Found: C, 53.68; H, 6.16; N, 16.45; C23H28N6O4 0.1.ether CH2Cl2 requires C, 53.77; H, 5.73, N, 16.43%.

Example 31 0312 4-Amino-6,7-dimethoxy-2-4-(morpholinecarbonylamino)-1-N-methylpropaneamino-5-phenylquinazoline 0313 (a) 4-Amino-2(4-amino-1-N-methylpropaneamino)-6,7-dimethoxy-5-phenylquinazoline 0314 This was prepared by the method of Example 16(h) from the compound of Example 16(g) and 10 mole equivalents of N-methyl-1,3-propanediamine, in the presence of catalytic potassium iodide. The subtitle compound (17%) was obtained as a colourless foam. Rf 0.45 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 368 (MH). 0315 (b) 4-Amino-6,7-dimethoxy-2-4-(morpholinecarbonylamino)-1-N-methylpropaneamino-5-phenylquinazoline 0316 The title compound was prepared by the method of Example 30(b) from the product of step (a) and 4-morpholinecarbonyl chloride. The crude product was purified on silica gel, eluting with (CH2C11 2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to afford the title compound (49%) as a colourless foam. Rf 0.56 (CH2Cl2/MeOH/0.88NH3, 90/10/1, v/v). MS m/z 481 (MH). 1H NMR (CDCl3) : 1.81 (2H, m), 3.13 (3H, s), 3.32 (6H, m), 3.50 (3H, s), 3.65 (4H, m), 3.84 (2H, m), 4.00 (3H, s), 4.71 (2H, bs), 5.65 (1H, bs), 7.00 (1H, bs), 7.35 (2H, m), 7.48 (3H, m). Found: C, 58.84; H, 6.68; N, 15.69; C25H32N6O4 0.2.ether 0.5.CH2Cl2 requires C, 58.72; H, 6.56; N, 15.63%.

Example 32 0317 (R/S)-4-Amino-6,7-dimethoxy-5-phenyl-2-4-(tetrahydrofuran-2-carbonylamino)-1-N-methylpropaneaminoquinazoline 0318 The title compound was prepared by the method of Example 5(e) from the product of Example 31(a) and (R/S)tetrahydrofuran-2-carboxylic acid. The crude product was purified on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to afford the title compound (57%/O) as a colourless foam. Rf 0.51 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 466 (MH). 1H NMR (CDCl3) : 1.58 (1H, m), 1.71-1.97 (3H, m), 2.23 (2H, m), 2.94 (1H, m), 3.16 (3H, s), 3.39 (1H, m), 3.50 (3H, s), 3.71 (1H, m), 3.84 (1H, m), 3.89-4.05 (2H, m), 4.00 (3H, s), 4.40 (1H, t), 5.15 (2H, b), 7.05 (1H, bs), 7.40 (2H, m), 7.50 (3H, m), 8.39 (1H, bs). Found: C, 63.71; H, 6.85; N, 14.64; C25H31N5O4 0.1.CH2Cl2 requires C, 63.59; H, 6.63; N, 14.77%.

Example 33 0319 4-Amino-6,7-dimethoxy-2-4-(morpholinecarbonylamino)-1-propaneamino-5-phenylquinazoline 0320 (a) 4-Amino-2-(4-amino-1-propaneamino)-6,7-dimethoxy-5-phenylquinazoline 0321 The subtitle compound was prepared by the method of Example 16 h) from the compound of Example 16(g) and 10 mole equivalents of 1,3-propanediamine, in the presence of catalytic potassium iodide. The subtitle compound (72%) was obtained as a colourless foam. Rf 0.11 (CH2Cl2/MeOH(0.88NH3 84/14/2, v/v). MS m/z 354 (MH). 0322 (b) 4-Amino-6,7-dimethoxy-2-morpholinecarbonylamino)-1-propaneamino-5-phenylquinazoline 0323 The title compound was prepared by the method of Example 30(b) from the product of step (a) and 4-morpholinecarbonyl chloride. The crude product was purified on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to afford the title compound (71%) as a colourless solid. Rf 0.40 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 467 ( ). 1H NMR (CDCl3) : 1.80 (2H, m), 3.39 (6H, m), 3.50 (3H, s), 3.58 (2H, m), 3.68 (4H, m), 4.00 (3H, s), 4.90 (2H, bs), 5.50 (1H, bs), 5.80 (1H, bs), 6.90 (1H, s), 7.37 (2H, m), 7.52 (3H, m). Found: C, 58.69; H, 6.49; N, 16.53; C24H30N6O4 0.4.CH2Cl2 requires C, 58.54; H, 6.20; N, 16.79%.

Example 34 0324 (R/S)-4-Amino-6,7-dimethoxy-5-phenyl-2-4-(tetrahydrofuran-2-carbonylamino)-1-propaneaminoquinazoline 0325 The title compound was prepared by the method of Example 5(e) from the product of Example 33(a) and (R/S)-tetrahydrofuran-2-carboxylic acid. The crude product was purified on silica gel, eluting with (CH2Cl2/MeOH 90/10, v/v) followed by trituration with toluene to afford the title compound (52%) as a colourless foam. Rf 0.70 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 452 (MH). 1H NMR (CDCl3) : 1.67 (2H, m), 1.90 (2H, m), 2.23 (2H, m), 3.06 (1H, m), 3.35 (2H, m), 3.50 (3H, s), 3.61 (2H, m), 3.87 (1H, m), 3.99 (3H, s), 4.01 (1H, bs), 4.40 (1H, t), 5.35 (2H, b), 7.03 (1H, bs), 7.39 (2H, m), 7.52 (3H, m), 8.20 (1H, bs). Found: C, 63.18; H, 6.50; N, 14.66; C24H29N5O4. 0.1.toluene 0.5.H2O requires C, 63.16; H, 6.61; N, 14.91%.

Example 35 0326 4-Amino-6,7-dimethoxy-5-phenyl-2-4-(2-pyrimidineamino)-1-propaneaminoquinazoline 0327 The product of Example 33(a) (230 mg, 0.65 mmol) was added to a solution of 2-chloropyrimidine (82 mg, 0.72 mmol) and triethylamine (0.l 1 ml, 0.78 mmol) in a mixture of n-BuOH (3 ml) and DMA (1 ml). The reaction was heated to 80 C. under N2 for 18 h, after which the reaction was cooled, washed with H2O, extracted with CH2Cl2, then washed with saturated brine. The organic layer was separated and dried over MgSO4 and the product purified by silica gel chromatography, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether. The title compound was obtained as a colourless foam (110 mg, 34%). Rf 0.57 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 432 (MH). 1H NMR (CDCl3) : 1.84 (2H, m), 3.41 (2H, m), 3.48 (3H, s), 3.55 (2H, m), 3.99 (3H, s), 6.4-8.4 (2H, b), 6.42 (1H, t), 6.90 (1H, bm), 7.05 (1H, s), 7.35 (2H, m), 7.52 (3H, m), 8.16 (2H, bs). Found: C, 57.75; H, 5.70; N, 20.04; C23H25N7O2 0.75.CH2Cl2 requires C, 57.59; H, 5.39; N, 19.80%.

Example 36 0328 4-Amino-6,7-dimethoxy-5-phenyl-2-3-(2-pyridyl)ethaneaminoquinazoline 0329 The title compound was prepared by the method of Example 16(h) from the compound of Example 16(g) and 5 mole equivalents of 2-(2-aminoethyl)pyridine in the presence of catalytic potassium iodide. The product was purified by silica gel chromatography, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to afford the title compound (31%) as a colourless foam. Rf 0.27 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 402 (MH). 3H NMR (CDCl3) : 3.09 (2H, t), 3.45 (3H, s), 3.84 (2H, q), 4.00 (3H, s), 5.00 (2H, bs), 6.00-6.60 (1H, b), 6.99 (1H, s), 7.05 (1H, dd), 7.40 (1H, d), 7.35 (2H, m), 7.50 (3H, m), 7.59 (1H, t), 8.55 (1H, d). Found: C, 63.48; H, 5.84; N, 15.77; C23H23N5020.5.CH2Cl2 requires C, 63.57; H, 5.45; N, 15.78%.

Example 37 0330 4-Amino-2-4-(furan-2-carbonyl)-1,4-piperazin-1-yl-6,7-dimethoxy-5-phenylquinazoline 0331 The title compound was prepared by the method of Example 5(e) from the compound of Example 19(a) and furan-2-carboxylic acid. The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to give the title compound (66%) as a foam. Rf 0.67 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 460 (MH). 1H NMR (CDCl3) : 3.50 (3H, s), 3.74 (2H, m), 3.80-4.05 (6H, m), 3.97 (3H, s), 4.66 (2H, bs), 6.48 (1H, bs), 7.00 (2H, m), 7.39 (2H, m), 7.50 (4H, m). Found: C, 65.71; H, 6.42; N, 14.80; C25H25N5O4 0.5.ether requires C, 65.30; H, 6.09; N, 14.11%.

Example 38 0332 (R/S)-4-Amino-6,7-dimethoxy-5-phenyl-2-4-(tetrahydrofuran-2-carbonyl)-1,4-piperazin-1-ylquinazoline 0333 The title compound was prepared by the method of Example 5(e) from the compound of Example 19(a) and (R/S)-tetrahydrofuran-2 carboxylic acid. The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to give the title compound (52%) as a foam. Rf 0.58 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 464 (MH). 1H NMR (CDCl3) : 1.81-2.16 (4H, m), 3.094.08 (10H, m), 3.50 (3H, s), 4.00 (3H, s), 4.61 (3H, bm), 6.97 (1H, s), 7.37 (2H, m), 7.50 (3H, m). Found: C, 63.14; H, 6.52; N, 14.00; C25H29N5O4 0.2.CH2Cl2 0.3.ether requires C, 63.07; H, 6.53; N, 13.88%.

Example 39 0334 (R/S)-4-Amino-6,7-dimethoxy-5-phenyl-2-4-(tetrahydropyran-2-carbonyl)-1,4-piperazin-1-ylquinazoline 0335 The title compound was prepared by the method of Example 5(e) from the compound of Example 19(a) and (R/S)-tetrahydropyran-2-carboxylic acid Nelson et al J. Org. Chem. 21, 798 (1956). The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to give the title compound (59%) as a solid. Rf 0.48 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 478 (MH). 1H NMR (CDCl3) o: 1.44-2.02 (6H, m), 3.40-4.16 (10H, m), 3.50 (3H, s), 3.98 (3H, s), 4.11 (1H, dd), 4.60 (2H, bm), 6.94 (1H, s), 7.38 (2H, m), 7.50 (3H, m). Found: C, 64.43; H, 6.45; N, 13.85; C26H31N5O4 0.1.CH2Cl2 0.3.ether requires C, 64.51; H, 6.82; N, 13.71%.

Example 40 0336 4-Amino-6,7-dimethoxy-2-4-(morpholinecarbonyl)-1,4-piperazin-1-yl-5-phenylquinazoline 0337 Morpholinecarbonyl chloride (0.07 ml, 0.66 mmol) was added to a stirred solution of the compound of Example 19(a) (220 mg, 0.60 mmol) and 4-methylmorpholine (0.08 ml, 0.72 mmol) in CH2Cl2 (5 ml) at 0 C. under N2. The reaction was stirred for 18 h, after which it was washed with H2O, extracted with CH2Cl2, washed with saturated brine and the organic layer dried over MgSO4 and evaporated. The product was purified on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to afford the tide compound as a solid (230 mg, 70%). Rf 0.45 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 479 (MH). 1H NMR (CDCl3) : 3.30 (12H, m), 3.50 (3H, s), 3.84 (4H, m), 3.98 (3H, s), 4.60 (2H, bm), 6.97 (1H, s), 7.38 (2H, m), 7.48 (3H, m). Found: C, 60.33; H, 6.24; N, 15.43; C25H30N6O4 0.3.CH2Cl2 0.5.ether requires C, 60.35; H, 6.61; N, 15.46%.

Example 41 0338 4-Amino-6,7-dimethoxy-5-phenyl-2-4-(thiomorpholine-1,1-dioxide-4-carbonyl)-1,4-diazepan-1-ylquinazoline 0339 (a) Thiomorpholine-1,1-dioxide Hydrochloride 0340 2-Chloroethyl chloroformate (0.72 ml, 6.7 mmol) was added dropwise to a solution of 4-methylthiomorpholine-1,1-dioxide (11.0 g, 6.7 mmol) in toluene (10 ml) at 0 C. under N2. After 10 min, the reaction was warmed and maintained at reflux for 2 h. On cooling, the reaction mixture was evaporated, partitioned between EtOAc and H2O, the organic layer separated and washed sequentially with dilute HCl and saturated brine, the organic layer dried over Na2SO4 and evaporated. The residue was taken up in MeOH (10 ml) and heated at reflux for 2 h, after which time the reaction mixture was evaporated and triturated with EtOAc to afford the subtitle compound (415 mg, 36%) as a solid. Rf 0.34 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 136 (MH). 0341 (b) 4-Amino-6,7-dimethoxy-5-phenyl-2-4-(thiomorpholine-1,1-dioxide-4-carbonyl)-1,4-diazepan-1-ylquinazoline 0342 The tide compound was prepared by the method of Example 18 using the product of step (a) in place of azetidinol. The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH(0.88NH3 90/10/1, v/v) followed by trituration with ether to give the title compound (25%) as a foam. Rf 0.58 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 541 (MH). 1H NMR (CDCl3) : 1.97 (2H, m), 3.00 (4H, m), 3.40 (2H, m), 3.50 (3H, s), 3.55-3.73 (6H, m), 3.84 (2H, m), 3.904.06 (2H, m), 3.98 (3H, s), 4.59 (2H, bm), 6.90 (1H, s), 7.38 (2H, m), 7.50 (3H, m). Found: C, 55.90; H, 5.82; N, 14.35; C26H32N6O5S 0.3.CH2Cl2 0.2.ether requires C, 55.82; H, 5.98; N, 14.40%.

Example 42 0343 (R/S)-4-Amino-6,7-dimethoxy-5-phenyl-2-tetrahydropyran-2-carbonyl)-1,4-diazepan-1-ylquinazoline 0344 (a) (R/S)-1-(t-Butyloxycarbonyl)-4-(tetrahydropyran-2-carbonyl)-1,4-diazepane 0345 The subtitle compound was prepared by the method of Example 5(e) with Intermediate 1 and (R/S)-tetrahydropyran-2-carboxylic acid. The subtitle compound (73%) was obtained as a solid. Rf 0.67 (CH2Cl2). MS m/z 312 (MH). 0346 (b) (R/S)-1-(Tetrahydropyran-2-carbonyl)-1,4-diazepane Hydrochloride 0347 The subtitle compound was prepared by the method of Intermediate 3 from the product of step (a). The subtitle compound was obtained in quantitative yield as a hygroscopic solid. MS m/z 213 (MH). 0348 (c) (R/S)-4-Amino-6,7-dimethoxy-5-phenyl-2-4-(tetrahydropyran-2-carbonyl)-1,4-diazepan-1-ylquinazoline 0349 The title compound was prepared by the method of 16(h) from the product of step (b) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH(0.88NH3 90/10/1, v/v) followed by trituration with ether to afford the title compound (43%) as a foam. Rf 0.61 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 492 (MH). 1H NMR (CDCl3) : 1.06-2.16 (8H, m), 3.16-4.40 (11H, m), 3.47 (3H, s), 3.98 (3H, s), 4.59 (2H, bm), 6.95 (1H, bs), 7.38 (2H, m), 7.50 (3H, m). Found: C, 65.60; H, 7.20; N, 12.32; C27H33N5O4 0.8.ether requires C, 65.84; H, 7.50; N, 12.71%.

Example 43 0350 (S)-4-Amino-6,7-dimethoxy-2-2-(morpholinecarbonyl)pyrrolidin-1-yl-5-phenylquinazoline 0351 The title compound was prepared by the method of 16(h) from (S)-proline morpholine amide prepared according to the method of Asami, Bull. Chem. Soc. Jpn., 63, 721 (1990), replacing Cbz-(S)-proline with tBoc-(S)proline) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v) followed by trituration with ether to afford the title compound (53%) as a foam. Rf 0.39 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 464 (MH). 1H NMR (CDCl3) : 1.99 (2H, m), 2.02 (2H, m), 3.48 (3H, s), 3.60 (6H, m), 3.84 (4H, m), 3.97 (3H, s), 4.58 (2H, bm), 5.02 (1H, bs), 6.95 (1H, bs), 7.35 (2H, m), 7.47 (3H, m). Found: C, 63.68; H, 6.54; N, 13.92; C25H29N5O4 0.5.ether 0.1. CH2Cl2 requires C, 63.72; H, 6.75; N, 13.70%.

Example 44 0352 4-Amino-6,7-dimethoxy-5-phenyl-2-(5,6,7,8-tetrahydro-1,6-naphthyrid-6-yl)quinazoline 0353 The title compound was prepared by the method of 16(h) from 5,6,7,8-tetrahydro-1,6-naphthyridine Shiozawa et al. Chem. Pharm. Bull., U, 2522 (1984)) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH/0.88NH3 93/7/1, v/v) followed by trituration with ether to afford the title compound (33%) as a foam. Rf 0.50 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 492 (MH). 1H NMR (CDCl3) : 3.10 (2H, t), 3.48 (3H, s), 3.98 (3H, s), 4.18 (2H, t), 4.66 (2H, bs), 5.00 (2H, s), 7.01 (1H, s), 7.13 (1H, dd), 7.39 (2H, m), 7.50 (4H, m), 8.42 (1H, d). Found: C, 68.05; H, 5.80; N, 15.89; C25H23N5O2 0.1.CH2Cl2 0.4.ether requires C, 68.35; H, 6.07; N, 15.51%.

Example 45 0354 4-Amino-6,7-dimethoxy-5-phenyl-2-(5,6,7,8-tetrahydro-1,3,6-triazanaphth-6-yl)quinazoline 0355 (a) 1-(t-Butyloxycarbonyl)-3-(N,N-dimethylmethylidene)-4-piperidone 0356 Dimethylformamide dimethyl acetal (5.82 ml, 0.044 mol) was added to a stirred solution of 1-Boc4-piperidone Ashwood et al J. Chem. Soc., Perkin 1, 641 (1995) (8.73 g, 0.044 mol) in DMF (80 ml) and the reaction mixture was heated to 80 C. under N2 for 18 h. After cooling, the DMF was removed under reduced pressure and the residue was partitioned between EtOAc and H2O, the organic layer washed with H2O and saturated brine, then dried over MgSO4 and evaporated to afford the subtitle compound as a solid (8.44 g, 76%). Rf 0.33 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 255 (MH). 0357 (b) 6-(t-Butyloxycarbonyl)-(5,6,7,8-tetrahydro-1,3,6-triazanaphthalene) 0358 Sodium (762 mg, 0.033 mol) was added to EtOH (150 ml) followed by formamidine acetate (3.45 g, 0.033 mol) and the reaction was stirred at room temperature under N2 for 30 min. A solution of the product of step (a) (8.43 g, 0.033M) in EtOH(50 ml) was then added and the reaction heated to reflux for 18 h after which time the mixture was cooled and concentrated under reduced pressure. The residue was partitioned between EtOAc and H2O, the organic layer washed with saturated brine and dried over MgSO4. Purification on silica gel, eluting with CH2Cl2/MeOH (96/4, v/v) afforded the subtitle compound as an oil (5.09 g, 65%). Rf 0.57 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 236 (MH). 0359 (c) 5,6,7,8-Tetrahydro-1,3,6-triazanaphthalene 0360 HCl was bubbled through a solution of the product of step (b) (4.80 g, 0.020 mol) in a mixture of MeOH and ether (50 ml, 1/1, v/v) at 0 C. until saturated. The mixture was then allowed to reach room temperature over 2 h, after which time a precipitate formed. This was isolated by decanting off the supernatant solution, washing with ether (2) and drying in vacuo to afford the subtitle compound as a colourless solid (2.85 g, 81%). Rf 0.13 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 136 (MH). 0361 (d) 4-Amino-6,7-dimethoxy-5-phenyl-2-(5,6,7,8-tetrahydro-1,3,6-triazanaphth-6-yl)quinazoline 0362 The title compound was prepared by the method of 16(h) from the product of step (c) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with (EtOAc/hexane 7/1, v/v) followed by trituration with ether to afford the title compound (42%) as a light yellow foam. Rf 0.48 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 415 (MH). 1H NMR (CDCl3) : 3.03 (2H, t), 3.50 (3H, s), 4.00 (3H, s), 4.21 (2H, t), 4.68 (2H, bs), 5.00 (2H, s), 7.00 (1H, s), 7.37 (2H, m), 7.50 (3H, m), 8.55 (1H, s), 8.99 (1H, s). Found: C, 65.77; H, 5.48; N, 19.31; C23H22N6O2 0.2.ether 0.25.H2O requires C, 65.90; H, 5.69; N, 19.37%.

Example 46 0363 4-Amino-6,7-dimethoxy-2-(4-methanesulfonamido)isoindolin-2-yl-5-phenylquinazline 0364 (a) 4-Methanesulfonamidophthalimide 0365 Methanesulfonylchloride (2.6 ml, 0.034 mol) was added dropwise to a stirred suspension of 4-aminophthalimide (5.0 g, 0.031 mol) in pyridine (50 ml). The mixture was stirred for 48 h under N2 at room temperature, after which time the solid formed was isolated by filtration, washing well with H2O and CH2Cl2 and then dried in vacuo to afford the subtitle compound as a colourless solid (5.67 g, 76%). Rf 0.52 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 241 (MH). 0366 (b) 4-(Methanesulfonamido)isoindoline Hydrochloride 0367 Borane.THF complex (1M solution in THF, 106 ml, 0.11 mol) was added dropwise to a stirred suspension of the product of step (a) in THF (100 ml) and the reaction heated to reflux for 18 h. The reaction mixture was then cooled to 0 C. and MeOH (50 ml) was added cautiously, followed by 6N HCl (70 ml). The mixture was then extracted with CH2Cl2 (3) and the aqueous layer evaporated to dryness. The residue was taken up into CH2Cl2/MeOH (95/5, v/v) and the inorganic solid filtered off. The filtrate was concentrated to give a solid which was triturated with CH2Cl2 and dried in vacuo to afford the subtitle compound as a colourless solid (2.67 g, 46%). Rf 0.09 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 213 (MH). 0368 (c) 4-Amino-6,7-dimethoxy-2-(4-methanesulfonamido)isoindolin-2-yl-5-phenylquinazoline 0369 The title compound was prepared by the method of 16 h) from the product of step (b) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with (EtOAc/hexane 7/1, v/v) followed by trituration with ether to afford the title compound (41%) as a solid. Rf 0.52 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 492 (MH). 1H NMR (CDCl3) : 3.03 (3H, s), 3.50 (3H, s), 4.00 (3H, s), 4.71 (2H, bs), 4.90 (4H, bs), 7.03 (1H, s), 7.13 (1H, d), 7.21 (1H, s), 7.30 (1H, d), 7.40 (2H, m), 7.52 (4H, m). Found: C, 59.87; H, 5.51; N, 12.72; C25H25N5O4S 0.8.EtOAc requires C, 60.26; H, 5.63; N, 12.46%.

Example 47 0370 (S)-4-Amino-6,7-dimethoxy-2-3-(morpholinecarbonyl)pyrrolidin-1-yl-5-phenylquinazoline 0371 (a) (R/S)-1-(t-Butyloxycarbonyl)-3-(morpholinecarbonyl)pyrrolidine 0372 The subtitle compound was prepared by the method of Example 5(e) with (R/S)-1-Boc-pyrrolidine-3-carboxylic acid (MacLeod et al J. Med. Chem., 33, 2052 (1990) and morpholine. The subtitle compound (62%) was obtained as an oil. Rf 0.69 (CH2Cl2/MeOH 95/5, v/v). MS m/z 285 (). 0373 (b) (R/S)-3-(Morpholinecarbonyl)pyrrolidine, Hydrochloride 0374 The subtitle compound was prepared by the method of Example 45(c). The subtitle compound (64%) was obtained as a colourless solid. Rf 0.07 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 185 (MH). 0375 (c) (S)-4-Amino-6,7-dimethoxy-2-3-(morpholinecarbonyl)pyrrolidin-1-yl-5-phenylquinazoline 0376 The title compound was prepared by the method of 16(h) from the product of step (b) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with (CH2Cl2/MeOH/NH3 90/10/1, v/v) followed by trituration with ether to afford the title compound (41%) as a solid. Rf 0.52 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 464 (MH). 1H NMR (CDCl3) : 2.13 (1H, m), 2.35 (1H, m), 3.26(1H, m), 3.47 (3H, s), 3.52-3.76 (10H, m), 3.84 (1H, m), 3.98 (3H, s), 4.00 (1H, m), 4.70 (2H, bs), 7.05 (1H, s), 7.38 (2H, m), 7.45 (3H, m). Found: C, 62.55; H, 6.28; N, 14.27; C21H29N5O4 0.25. CH2Cl2 requires C, 62.55; H, 6.13; N, 14.45%.

Example 48 0377 4-Amino-6,7-dimethoxy-5-(2-methoxyphenyl)-2-(5,6,7,8-tetrahydro-1,6-naphthyrid-6-yl)quinazoline 0378 (a) 4-Amino-6,7-dimethoxy-5-iodo-2-(5,6,7,8-tetrahydro-1,6-naphthyrid-6-yl)quinazoline 0379 The subtitle compound was prepared by the method of 16(h) from 1,2,3,4-tetrahydro-1,6-naphthyridine and the compound of Example 20(b).The subtitle compound was obtained in quantitative yield as a brown foam. Rf 0.35 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 464 (MH). 0380 (b) 4-Amino-6,7-dimethoxy-5-(2-methoxyphenyl)-2-(5,6,7,8-tetrahydro-1,6-naphthyrid-6-yl)quinazoline 0381 The title compound was prepared by the method of Example 1(a) with 2-methoxyphenylboronic acid and the product of step (a). The product was purified by trituration with EtOAc/hexane to afford the title compound (18%) as an off-white solid. Rf 0.33 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 444 (MH). 1H NMR (D6-DMSO) : 3.06 (2H, m), 3.50 (3H, s), 3.74 (3H, s), 4.00 (3H, s), 4.21 (2H, m), 4.74 (2H, s), 4.99 (2H, s), 6.90-7.16 (4H, m), 7.22 (1H, d), 7.39-7.55 (2H, m), 8.40 (1H, d). Found: C, 66.52; H, 5.84; N, 14.83; C25H75N5O3 0.5.H2O 0.1.hexane requires C, 66.67; H, 5.73; N, 15.20%.

Example 49 0382 4-Amino-11-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-9H-2benzopyrano-3,4-cquinazoline 0383 (a) 3-Benzyloxy-4-methoxybenzonitrile 0384 3-Benzyloxy-4-methoxybenzaldehyde (50 g, 0.21 mol) was added to a solution of sodium acetate (33.9 g, 0.41 mol) and hydroxylamine hydrochloride (28.73 g, 0.41 mol) in acetic acid (200 ml) and the resulting suspension was heated to reflux for 18 h. After cooling, the reaction mixture was partitioned between CH2Cl2 and H2O and the aqueous phase was further extracted with CH2Cl2. The combined organic layers were dried over MgSO4 and evaporated to afford the subtitle compound as a buff-coloured solid (43.9 g, 89%). Rf 0.70 (toluene/EtOAc 4/1, v/v). 0385 (b) 5-Benzyloxy-4-methoxy-2-nitro-benzonitrile 0386 A solution of the product of step (a) (43.8 g, 0.18 mol) in glacial acetic acid (87 ml) was added dropwise to concentrated nitric acid (70% w/w, 244 ml) with periodic cooling to maintain the reaction temperature below 30 C. Once the addition was complete, the reaction was stirred for a further 30 min, after which time the mixture was poured into H2O (1 L) and stirred for 30 min. The resulting precipitate was isolated by filtration, washing with H2O followed by drying in vacuo at 50 C. to afford the subtitle compound as a white solid (35.1 g, 68%). Rf 0.70 (EtOAc/hexane 1/1, v/v). 0387 (c) 2-Amino-5-benzyloxy-4-methoxybenzonitrile 0388 To a solution of the product of step (b) (35.0 g, 0.12 mol) in CH2Cl2 (500 ml) was added tetra-n-butylammonium chloride (20.3 g, 0.074 mol) followed by a solution of sodium dithionite hydrate (118.0 g, 0.61 mol) in H2O (400 ml) and the mixture was stirred vigorously for 2 h at room temperature. A further quantity of sodium dithionite hydrate (47.2 g) was then added and stirring continued for 1 h. The reaction mixture was then basified with 2N aqueous NaOH and the phases separated. The aqueous layer was extracted twice more with CH2Cl2 and the combined organic layers dried over MgSO4 and concentrated in vacuo to a volume of 60 ml. Treatment with excess ethereal HCl led to the precipitation of an orange solid which was washed with ether and then dissolved in a mixture of CH2Cl2 and 2N aqueous NaOH. The phases were separated and the organic layer concentrated in vacuo and then dissolved in EtOAc and passed through a 5 cm plug of silica gel, eluting with EtOAc. On evaporation and drying in vacuo, the subtitle compound was obtained as a yellow solid (26.7 g, 85%). Rf 0.76 (CH2Cl2/MeOH/0.88NH3 90/10/1, v/v). MS m/z 255 (MH). 0389 (d) 4-Amino-6-benzyloxy-2-hydroxy-7-methoxyquinazoline 0390 A solution of the product of step (c) (26.7 g, 0.10 mol) in CH2Cl2 was treated with sodium cyanate (17.1 g, 0.26 mol) and trifluoroacetic acid (20.9 ml, 0.26 mol) was added dropwise to the resulting mixture at room temperature. After 45 min, the mixture was diluted with CH2Cl2 (1L) and stirred for a further 18 h. The mixture was then concentrated in vacuo and partitioned between MeOH and 2N aqueous NaOH and stirred for 2 h. The MeOH was then removed in vacuo and the yellow solid isolated by filtration, washing sequentially with H2O, acetone and ether to afford the subtitle compound as a yellow solid (18.0 g, 54%). A further quantity of product was obtained by concentration of the filtrate, acidification with concentrated HCl (95 ml), warming on a steam bath for 5 min, cooling and neutralisation with solid potassium carbonate. The solid obtained was isolated by filtration, washing sequentially with H2O, EtOH and ether to afford the subtitle compound as a yellow solid (12.11 g, 93% combined yield). Rf 0.23 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 298 (MH). 0391 (e) 4-Amino-6-benzyloxy-2-chloro-7-methoxyquinazoline DMF (7.9 ml, 0.10 mol) was added dropwise to POCl3 with stirring. After 10 min, the product of step (d) was added portionwise and the resulting mixture heated at 90 C. for 1.5 h, then cooled and poured into EtOAc (750 ml). The mixture was neutralised by the portionwise addition of aqueous sodium carbonate and the phases were separated. The organic layer was evaporated to dryness and the residue combined with the organic phase which was then treated with aqueous NaOH to basify (pH 10) and the mixture was heated at 90 C. for 2 h. After cooling, the mixture was partitioned between CH2Cl2 (1 L) and H2O (1 L), the organic phase washed with H2O, dried over MgSO4 and evaporated to give a pale yellow solid. Trituration with isopropanol afforded the subtitle compound as a colourless solid (4.64 g, 29%). Rf 0.64 (EtOAc/MeOH 95/5, v/v). MS m/z 316, 318 (MH). 0392 (f) 2-Amino-6-benzyloxy-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4diazepan-1-yl0393 The subtitle compound was prepared by the method of 16(h) from the product of step (e) and the compound of Example 16(g). The product was purified on silica gel eluting with EtOAc/MeOH (9/1, v/v) to afford the subtitle compound (46%) as a foam. Rf 0.67 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 493 (MI). 0394 (g) 2-Amino-6-hydroxy-7-methoxy-2-4(4-morpholinecarbonyl)-1,4-diazepan-1-yl0395 The product of step (f) (360 mg, 0.73 mmol) was dissolved in EtOH (60 ml), 10% palladium on charcoal (100 mg, 0.09 mmol) was added and the reaction mixture hydrogenated at room temperature at a pressure of 414 kPa (60 psi). for 18 h. The reaction mixture was filtered and concentrated in vacuo and the residue purified on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (92/7/1, v/v) to afford the subtitle compound as a foam (135 mg, 47%). Rf 0.33 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 403 (MH). 0396 (h) 2Amino-6-(o-bromobenzyloxy)-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl0397 Sodium hydride (60% dispersion in mineral oil, 1001 mg, 2.5 mmol) was added to DMF (20 ml) and this was followed by the addition of the product of step (g) (1.0 g, 2.5 mmol) and the reaction was stirred at room temperature for 20 min. o-Bromobenzyl bromide (625 mg, 2.5 mmol) was then added to the reaction which was left to stir for 1 h, after which time it was quenched with H2O, extracted with EtOAc (2), the combined organic layers washed with H2O, dried over MgSO4 and evaporated to afford the product as a foam (1.2 g, 84%). Rf 0.48 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 571, 573 (MH). 0398 (i) Amino-11-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-9H-2benzopyrano-3,4-c quinazoline 0399 To a solution of the product of step (i) (1.2 g, 2.0 mmol) in DMA (10 ml) was added sodium carbonate (254 mg, 2.4 mmol) and palladium acetate (45 mg, 0.2 mmol) and the reaction mixture was heated to 130 C. for 48 h under N2. The reaction mixture was then cooled partitioned between EtOAc and H2O and the organic layer dried over MgSO4 and evaporated. The product was purified by chromatography on silica gel eluting with CH2Cl2/MeOH/0.88NH3 (95/5/0.5, v/v) followed by trituration with hexane to afford the title compound as a light yellow solid (114 mg, 12%). Rf 0.76 (CH2Cl2/MeOH/0.88NH3 84/14/2, v/v). MS m/z 491 (MH). 1H NMR (CDCl3) : 2.06 (2H, m), 3.18 (4H, m), 3.42 (2H, m), 3.60 (2H, m), 3.68 (4H, m), 3.94 (2H, m), 4.00 (5H, m), 4.90 (2H, bs), 5.09 (2H, s), 6.87 (1H, s), 7.21-7.52 (4H, m). Found: C, 62.18; H, 6.34; N, 14.66; C26H30N6O4. 0.6.hexane 0.5. CH2Cl2 requires C, 61.84; H, 6.74; N, 14.38%.

Example 50 0400 4-Amino-11-methoxy-2-4(4-morpholinecarbonyl)-1,4-diazepan-1-yl-9H-2benzopyrano-3,4-cquinoline 0401 (a) 3-(o-Bromobenzyloxy)-4-methoxybenzonitrile 0402 To a solution of 2-bromobenzyl alcohol (16.50 g, 88.2 mmol) in DMF (100 ml) was added sodium hydride (60% dispersion in mineral oil, 2.94 g, 73.5 mmol) and this was followed by 3-fluoro-4-methoxybenzonitrile (8.88 g, 58.8 mmol) and the resulting mixture was heated to 90 C. for 2 h under N2. After cooling, the mixture was partitioned between ether and H2O, the organic layer washed sequentially with 0.5 N HCl and saturated brine and then dried over MgSO4. Trituration with ether/pentane (1/3, v/v) afforded the subtitle compound as an off-white solid (13.35 g, 71%). Rf 0.27 (hexane/EtOAc 5/1, v/v). MS m/z 318, 320 (MH). 0403 (b) 1-Cyan-6H-dibenzob,dpyran 0404 The subtitle compound was prepared by the method of Example 49(i) from the product of step (a). The product was purified by chromatography on silica gel, eluting with hexane/EtOAc (4/1, v/v) followed by trituration with hexane/EtOAc (4/1, v/v) to afford the subtitle compound (41%) as a colourless solid. Rf 0.16 (hexane/EtOAc, 4/1, v/v). MS m/z 238 (MH). 0405 (c) 1-Cyano-2-nitro-6H-dibenzob,dpyran 0406 The subtitle compound was prepared by the method of Example 16(a) from the product of step (b). The product was purified by chromatography on silica gel, eluting with CH2Cl2 to afford the subtitle compound (42%) as a pale yellow solid. Rf 0.26 (hexane/CH2Cl2 1/2, v/v). MS m/z 283 (MH). 0407 (d) 2-Amino-1-cyano-6H-dibenzob,dpyran 0408 The subtitle compound was prepared by the method of Example 49(c) from the product of step (c). The product was purified by chromatography on silica gel, eluting with CH2Cl2/MeOH (98/2, v/v) to afford the subtitle compound (85%) as a yellow solid. Rf 0.81 (CH2Cl2/MeOH/0.88NH3 93/7/1, v/v). MS m/z 253 (MH). 0409 (e) 1-Cyano-2-1-4-(morpholine-4-carbonyl)-1,4-diazepan-1-ylethylideneamino-6H-dibenzob,dpyran 0410 The subtitle compound was prepared by the method of Example 1(c) from the product of step (d) and Intermediate 4. The product was purified by chromatography on silica gel, eluting with CH2Cl2/MeOH (97/3, v/v) to afford the subtitle compound (97%) as a yellow foam. Rf 0.56 (CH2Cl2/MeOH/0.88NH3 93/7/1, v/v). MS m/z 490 (MH). 0411 (f) 4-Amino-11-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-9H-2benzopyrano-3,4-cquinoline 0412 The title compound was prepared by the method of Example 1 (d) from the product of step (e). The product was purified by chromatography on silica gel, eluting with CH2Cl2/MeOH (9/1, v/v) followed by dissolution in CH2Cl2 and precipitation with toluene to afford the subtitle compound (40%) as a yellow solid. Rf 0.35 (CH2Cl2/MeOH/0.88NH3 93/7/1, v/v). MS m/z 490 (MH). 1H NMR (CDCl3) : 2.10 (2H, m), 3.16 (4H, m), 3.40 (2H, m), 3.65 (6H, m), 3.77 (2H, m), 3.98 (2H, m), 4.01 (3H, s), 4.35 (2H, s), 4.90 (1H, d), 5.30 (1H, d), 5.94 (1H, s), 7.05 (1H, s), 7.21-7.52 (4H, m). Found: C, 65.86; H, 6.33, N, 13.30; C27H31N5O4. 0.2.toluene 0.5.H2O requires C, 65.98; H, 6.55, N, 13.55%.

Example 51 0413 4-Amino-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-5-phenyl-6-(2,2,2-trifluoroethoxy)quinoline 0414 (a) 4-Methoxy-3-(2,2,2-trifluoroethoxy)benzoic Acid, Methyl Ester 0415 To a mixture of isovanillic acid methyl ester (33.0 g, 0.18 mol) and potassium carbonate (41.4 g, 0.30 mol) in DMF (100 ml) was added a solution of trifluoroethyl triflate Burdon et al Tetrahedron 21, 1 (1965) (65.0 g, 0.28 mol) in CH2Cl2. The mixture was stirred at room temperature for 18 h then evaporated to 50 ml, the mixture partitioned between ether and H2O, the organic layer washed with H2O and saturated brine, then dried over MgSO4 and evaporated. The resulting solid was triturated with hexane to give the subtitle compound as an off-white solid (42.55 g, 90%). Rf 0.47 (CH2Cl2). MS m/z 265 (MH). 0416 (b) 4-Methoxy-3-(2,2,2-trifluoroethoxy)benzoic Acid 0417 The product of step (a) (42.3 g, 0.16 mol) was dissolved in MeOH (500 ml) and 2N aqueous NaOH (160 ml, 0.32 mol) was added and the mixture stirred at room temperature for 3 h and then at 50 C. for 1 h. After cooling, the solution was concentrated in vacuo, treated with 2N HCl and extracted with EtOAc (3). The combined organic extracts were dried over MgSO4, filtered and evaporated to give the subtitle compound as a colourless solid (40.4 g, quantitative). Rf 0.13 (hexane/EtOAc 1/1, v/v). MS m/z 251 (MH). 0418 (c) 2-4-Methoxy-3-(2,2,2-trifluoroethoxyphenyl)-4,4-dimethyl-2-oxazoline 0419 The subtitle compound was prepared by the method of Example 3(a) from the product of step (b). The product was purified on silica gel, eluting with CH2Cl2/MeOH (95/5) to give the subtitle compound (80%) as a colourless solid. Rf 0.54 (EtOAc). MS m/z 304 (MH). 0420 (d) 2-2-Iodo-4-methoxy-3-(2,2,2-trifluoroethoxyphenyl)-4,4-dimethyl-2-oxazoline 0421 The subtitle compound was prepared by the method of Example 3(b) from the product of step (c). The product was purified on silica gel, eluting with EtOAc/hexane (3/2, v/v) followed by trituration with ether/hexane (1/3, v/v) to give the subtitle compound (26%) as a colourless solid. Rf 0.27 (EtOAc/hexane 1/1, v/v). MS m/z 430 (MH). 0422 (e) 2-Iodo-4-methoxy-3-(2,2,2-trifluoroethoxy)benzonitrile 0423 The subtitle compound was prepared by the method of Example 3(c) from the product of step (d). The product was triturated with ether/hexane (1/3, v/v) to give the subtitle compound (97%) as a colourless solid. Rf 0.50 (EtOAc/hexane 1/1, v/v). MS m/z 358 (MH). 0424 (f) 2-Iodo-4-methoxy-6-nitro-3-(2,2,2-trifluoroethoxy)benzonitrile 0425 The subtitle compound was prepared by the method of Example 3(d) from the product of step (e). The product was triturated with ether to give the subtitle compound (61%) as a colourless solid. Rf 0.25 (EtOAc/hexane 1/2, v/v). MS m/z 403 (MH). 0426 (g) 2-Amino-6-iodo-4-methoxy-5-(2,2,2-trifluoroethoxy)benzonitrile 0427 The subtitle compound was prepared by the method of Example 49(c) from the product of step (f). The subtitle compound (70%) was obtained as a colourless solid. Rf 0.74 (CH2Cl2/MeOH/0.88NH3 93/7/1, v/v). MS m/z 373 (MH). 0428 (h) 2-Iodo-4-methoxy-6-1-4-(morpholine-4-carbonyl)-1,4-diazepan-1-ylethylideneamino-3-(2,2,2-trifluoroethoxy)benzonitrile 0429 The subtitle compound was prepared by the method of Example 1(c) from the product of step (g) and Intermediate 4. The product was purified by chromatography on silica gel eluting with CH2Cl2/MeOH (9/1, v/v) followed by crystallisation from EtOAc to give the subtitle compound (64%) as a colourless solid. Rf 0.12 (EtOAc). MS m/z 610 (MH). 0430 (i) 4-Amino-5-iodo-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-6-(2,2,2-trifluoroethoxy)quinoline 0431 The subtitle compound was prepared by the method of Example 1 (d) from the product of step (h). The product was purified by chromatography on silica gel eluting with CH2Cl2/MeOH (9/1, v/v) to give the subtitle compound (20%) as a colourless solid. Rf 0.15 (CH2Cl2/MeOH 9/1, v/v). 1H NMR (CDCl3) : 2.06 (2H, m), 3.16 (4H, m), 3.32 (2H, m), 3.58 (2H, m), 3.65 (4H, m), 3.70 (2H, m), 3.90 (2H, m), 3.97 (3H, s), 4.37 (2H, t), 5.55 (2H, bs), 5.90 (1H, s), 7.05 (1H, bs). 0432 (j) 4-Amino-7-methoxy-2-4-(4-morpholinecarbonyl)-1,4-diazepan-1-yl-5-phenyl-6-(2,2,2-trifluoroethoxy)quinoline 0433 The subtitle compound was prepared by the method of Example 1(a) from the product of step (i) and phenylboronic acid. The product was purified by chromatography on silica gel eluting with CH2Cl2/MeOH (9/1, v/v) to give the subtitle compound (55%) as a foam. Rf 0.12 (CH2Cl2/MeOH 9/1, v/v). MS m/z 560 (MH). 1H NMR (CDCl3) : 2.06 (2H, m), 3.16 (4H, m), 3.35 (2H, m), 3.55-3.80 (8H, m), 3.82-4.13 (9H, m), 5.70 (1H, s), 7.65 (1H, bs), 7.37 (2H, m), 7.45 (3H, m).

Example 52 0434 2-Amino-6,7-dimethoxy-5-phenyl-2-(5,6,7,8-tetrahydro-1,3,7-triazanaphth-7-yl)quinazoline 0435 (a) 1-Trityl-3-piperidone 0436 Trityl chloride (13.1 g, 47.0 mmol) was added to a stirred suspension of 3-piperidone hydrochloride (5.79 g, 42.7 mmol) and triethylamine (14.9 ml, 107 mmol) in CH2Cl2 (100 ml) and the reaction was stirred for 16 h under N2 at room temperature. The resulting mixture was filtered and the filtrate washed sequentially with H2O and 5% aqueous citric acid, dried over MgSO4 and evaporated under reduced pressure. Trituration with pentane afforded the subtitle compound as a colourless solid (4.8 g, 33%). Rf 0.23 (CH2Cl2/pentane 2/3, v/v). 1H NMR (CDCl3) : 2.05 (2H, m), 2.35 (2H, m), 2.45 (2H, m), 2.85 (2H, s), 7.06-7.55 (15H, m). 0437 (b) 4-(N,N-Dimethylmethylidene)-1-trityl-3-piperidone 0438 The subtitle compound was prepared by the method of Example 45(a) from the product of step (a). Crystallisation from ether afforded the subtitle compound (52%) as a colourless solid. Rf 0.23 (CH2Cl2/pentane 2/3, v/v). 1H NMR (CDCl3) : 2.35 (2H, t), 2.87 (2H, t), 2.97 (2H, s), 3.13 (6H, s), 7.13 (3H, m), 7.24 (7H, m), 7.50 (6H, m). 0439 (c) 7-Trityl-(5,6,7,8-tetrahydro-1,3,7-triazanaphthalene) 0440 The subtitle compound was prepared by the method of Example 45(b) from the product of step (b). The product was purified by chromatography on silica gel, eluting with CH2Cl2/ether (9/1, v/v) to afford the subtitle compound (51%). Rf 0.33 (CH2Cl2/ether 85/15, v/v). 1H NMR (CDCl3) : 2.60 (2H, t), 2.97 (2H, t), 3.58 (2H, s), 7.06-7.37 (8H, m), 7.52 (7H, m), 8.45 (1H, s), 8.90 (1H, s) 0441 (d) 5,6,7,8-Tetrahydro-1,3,7-triazanaphthalene Hydrochloride 0442 The subtitle compound was prepared by the method of Example 45(c) from the product of step (c). The product crystallised from MeOH/ether to afford the subtitle compound (65%) as an orange hygroscopic solid. 1H NMR (d6-DMSO) : 3.06 (2H, m), 3.40 (2H, m), 4.26 (2H, s), 8.68 (1H, s), 9.00 (1H, s), 9.96 (2H, bs). 0443 (e) 2-Amino-6,7-dimethoxy-5-phenyl-2-(5,6,7,8-tetrahydro-1,3,7-triazanaphth-7-yl)quinazoline 0444 The title compound was prepared by the method of 16(h) from the product of step (d) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with CH2Cl2/MeOH (95/5, v/v) to afford the title compound (36%) as a foam. Rf 0.16 (CH2Cl2/MeOH 95/5, v/v). MS m/z 415 (MH). 1H NMR (CDCl3) : 2.90 (2H, m), 3.50 (3H, s), 4.00 (3H, s), 4.16 (2H, m), 4.65 (2H, bs), 5.05 (2H, s), 7.00 (1H, s), 7.38 (2H, m), 7.50 (3H, m), 8.50 (1H, s), 9.02 (1H, s). Found: C, 63.56; H, 5.20; N, 18.97; C23H22N6O2 0.3.CH2Cl2 requires C, 63.49; H, 5.17; N, 19.06%.

Example 53 0445 4-Amino-6,7-dimethoxy-2-(4-methoxy-5,6,7,8-tetrahydro-1,3,7-triazanaphth-7-yl)-5-phenylquinazoline 0446 (a) 7-Benzyl-4-chloro-5,6,7,8-tetrahydro-1,3,7-triazanaphthalene 0447 7-Benzyl-4-hydroxy-5,6,7,8-tetrahydro-1,3,7-triazanaphthalene Ozdowska et al Rocz. Chem. Ann. Soc. Chim. Pol. 50, 1771 (1976) 95.0 g, 15.9 mmol) was added to POCl3 and the mixture heated to 100 C. for 1 h. The reaction was cooled, concentrated under reduced pressure and the residue quenched with ice. After neutralising with K2CO3 the product was extracted with CH2Cl2,, the organic layer washed with H2O, dried over MgSO4 and evaporated to give the subtitle compound as a brown oil (3.33 g, 81%). Rf 0.45 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). 0448 (b) 7-Benzyl-4-methoxy-5,6,7,8-tetrahydro-1,3,7-triazanaphthalene 0449 Sodium (380 mg, 16.5 mmol) was added portionwise to MeOH (7 ml) and the solution was added dropwise to a solution of the product of step (a) (3.3 g, 12.7 mmol) in THF (30 ml). After stirring at room temperature for 18 h, the reaction mixture was concentrated under reduced pressure, partitioned between H2O and CH2Cl2, the aqueous layer extracted with CH2Cl2 and the combined organic layers dried over MgSO4. Evaporation under reduced pressure afforded the subtitle compound as a brown oil (3.1 g, 95%). Rf 0.64 (CH2Cl2/MeOH/0.88NH3 92/7/1, v/v). 0450 (c) 4-Methoxy-5,6,7,8-tetrahydro-1,3,7-triazanaphthalene 0451 To a solution of the product of step (b) (3.1 g, 12.0 mmol) in EtOH (40 ml) was added palladium hydroxide (20%, w/w, 614 mg) and the mixture was hydrogenated at 345 kPa 50 psi pressure for 18 h, after which time a further portion of EtOH (40 ml) and palladium hydroxide (614 mg) was added and the hydrogenation continued for a further 18 h. Filtration, evaporation under reduced pressure and chromatography on silica gel, eluting with CH2Cl2/MeOH (90/10, v/v) afforded the subtitle compound as a pale orange oil (1.09 g, 55%). Rf 0.06 (CH2Cl2/MeOH 95/5, v/v). MS m/z 166 (MH). 0452 (d) 4-Amino-6,7-dimethoxy-2-(4-methoxy-5,6,7,8-tetrahydro-1,3,7-triazanaphth-7-yl)-5-phenylquinzoline 0453 The title compound was prepared by the method of 16(h) from the product of step (c) and the compound of Example 16(g) in the presence of 1 mol equivalent of ammonium chloride. The product was purified by chromatography on silica gel, eluting with EtOAc to afford the title compound (10%) as a foam. Rf 0.42 (EtOAc/MeOH 95/5, v/v). MS m/z 445 (MH). 1H NMR (CDCl3) : 2.74 (2H, t), 3.48 (3H, s), 3.98 (3H, s), 4.00 (3H, s), 4.10 (2H, t), 4.61 (2H, bs), 4.95 (2H, s), 6.97 (1H, s), 7.38 (2H, m), 7.50 (3H, m), 8.57 (1H, s). Found: C, 63.88; H, 5.59; N, 17.82; C24H24N6O3 0.2.EtOAc 0.3.H2O requires C, 63.71; H, 5.65; N, 17.98%.

Example 54 0454 4-Amino-6,7-dimethoxy-2-6-(2-methyl-4,5,6,7-tetrahydrothiazolo-5,4-cpyridyl)-5-phenylquinazoline 0455 (a) 2-Methyl-4,5,6,7-tetrahydrothiazolo-5,4-cpyridine Hydrochloride 0456 A mixture of 3-bromo-4-piperidone hydrobromide Scarponi et al Farmaco, Ed. Sci. 43, 575 (1988) (2.58 g, 0.01 mol) and thioacetamide (940 mg, 0.013 mol) in EtOH (100 ml) was heated at reflux for 3 h. After cooling, the reaction mixture was cooled and evaporated under reduced pressure and the resulting residue triturated with acetone to afford a solid. This was dissolved in H2O, washed with EtOAc (3), the aqueous phase was basified with saturated aqueous Na2CO3 and extracted with EtOAc (5), the combined organic extracts washed with saturated brine and dried over MgSO4 The product was purified by chromatography on silica gel, eluting with CH2Cl2/MeOH/0.88NH3 (90/10/1, v/v) followed by conversion to the hydrochloride salt with ethereal HCl to give, on filtration and drying in vacuo, the subtitle compound as a white solid (380 mg, 20%). Rf 0.67 (CH2Cl2/MeOH/0.88NH3 90/1011, v/v). MS m/z 155 (MH) 0457 (b) 4-Amino-6,7-dimethoxy-2-6-(2-methyl-4,5,6,7-tetrahydrothiazolo-5,4-cpyridyl)-5-phenylquinazoline 0458 The title compound was prepared by the method of 16(h) from the product of step (a) and the compound of Example 16(g). The product was purified by chromatography on silica gel, eluting with EtOAc, followed by trituration with ether to afford the title compound (11%) as a solid. Rf 0.24 (EtOAc). MS m/z 434 (MH). 1H NMR (CDCl3) : 2.66 (3H, s) 2.90 (2H, t), 3.50 (3H, s), 3.97 (3H, s), 4.16 (2H, t), 4.61 (2H, bs), 4.97 (2H, s), 6.95 (1H, s), 7.38 (2H, m), 7.48 (3H, m).

Example 55 0459 The compound of Example 17 was tested in the first screen described above (Contractile responses of human prostate) and found to have a pA2 value of 8.5.