申请人:BRITISH TECHNOLOGY GROUP LIMITED
公开号:EP0509643A1
公开(公告)日:1992-10-21
Quinazolines of the formula:-
wherein R¹ is hydrogen or amino,
or R¹ is alkyl, alkoxy or alkylthio each of up to 6 carbon atoms;
or R¹ is aryl or aryloxy each of up to 10 carbon atoms;
or R¹ is halogeno, hydroxy or mercapto;
or R¹ is alkyl of up to 3 carbon atoms which bears one or more substituents selected from halogeno, hydroxy and alkanoylamino each of up to 6 carbon atoms;
or R¹ is alkoxy of up to 3 carbon atoms which bears one or more substituents selected from hydroxy and alkoxy of up to 6 carbon atoms;
wherein R² is hydrogen or alkyl, alkenyl, alkynyl, hydroxyalkyl, alkoxyalkyl, mercaptoalkyl, alkylthioalkyl, halogenoalkyl, cyanoalkyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, alkyanoylalkyl, carboxyalkyl, carbamoylalkyl or alkanoyl each of up to 6 carbon atoms;
wherein Ar is phenylene or heterocyclene which is unsubstituted or which bears one or more substituents selected from halogeno, cyano, nitro, hydroxy, amino and carbomoyl and alkyl, alkoxy, halogenoalkyl, alkanoylamino, alkylthio and alkoxycarbonyl each of up to 6 carbon atoms;
R³ is the residue of a dipeptide in which the first, N-terminal amino acid residue thereof attached to the carbonyl group of COR³ COR³ is an L- or D-amino acid residue -NHCH(C₂H)-A-CO- in which A is an alkylene group of up to 6 carbon atoms and the second amino acid residue is of an α-amino acid which has the D-configuration at its asymmetric α-carbon atom;
wherein R⁴ is hydrogen or alkyl of up to 4 carbon atoms;
wherein R⁵ is hydrogen or alkyl of up to 4 carbon atoms; and
wherein each of R⁶, R⁷ and R⁸ is hydrogen or alkyl or alkoxy each of up to 4 carbon atoms; or is halogeno;
or a pharmaceutically-acceptable salt, ester or amide thereof are of therapeutic value, particularly in the treatment of cancer.
式中的喹唑啉类
其中 R¹ 是氢或氨基、
或 R¹ 是烷基、烷氧基或硫代烷基,每个最多 6 个碳原子;
或 R¹ 是芳基或芳氧基,每个最多 10 个碳原子;
或 R¹ 是卤素、羟基或巯基;
或 R¹是碳原子数不超过 3 个的烷基,带有一个或多个取代基,这些取代基可从卤素、羟基和烷酰氨基中选择,每个取代基的碳原子数不超过 6 个;
或 R¹ 是碳原子数不超过 3 个的烷氧基,带有一个或多个从羟基和碳原子数不超过 6 个的烷氧基中选出的取代基;
其中 R² 是氢或烷基、烯基、炔基、羟基烷基、烷氧基烷基、巯基烷基、烷硫基烷基、卤代烷基、氰基烷基、氨基烷基、烷基氨基烷基、二烷基氨基烷基、烷酰基烷基、羧基烷基、氨基甲酰基烷基或烷酰基,每个烷基最多 6 个碳原子;
其中 Ar 是未被取代的苯基或杂环基,或带有一个或多个取代基,这些取代基可选 自卤素、氰基、硝基、羟基、氨基和碳酰基以及烷基、烷氧基、卤代烷基、烷酰氨基、烷硫基 和烷氧羰基,每个取代基的碳原子数最多为 6 个;
R³ 是二肽残基,其中与 COR³ COR³ 的羰基相连的第一个 N 端氨基酸残基是 L 或 D 氨基酸残基-NHCH(C₂H)-A-CO-,其中 A 是最多 6 个碳原子的亚烷基,第二个氨基酸残基是在α-碳原子上具有 D 构型的α-氨基酸;
其中 R⁴ 是氢或最多 4 个碳原子的烷基;
其中 R⁵ 是氢或最多 4 个碳原子的烷基;以及
其中R⁶、R⁷和R⁸各自为氢或烷基或烷氧基,每个最多4个碳原子;或卤素;
或其药学上可接受的盐、酯或酰胺具有治疗价值,特别是在治疗癌症方面。