3-(Imidazol-1-ylalkyl)indoles as selective inhibitors of thromboxane synthetase,pharmaceutical compositions thereof, and methods for preparing them
申请人:Pfizer Limited
公开号:EP0003901A2
公开(公告)日:1979-09-05
Substituted 3-fimidazol-1-ylmethyl)indoles of the formula:
wherein
R1 is hydrogen or lower alkyl;
R2 is hydrogen, lower alkyl, lower cycloalkyl, adamantyl, or a phenyl or benzyl group in which the benzene ring is optionally mono-substituted with halogen, hydroxy, lower alkyl, lower alkoxy or trifluoromethyl;
R3 is hydrogen, lower alkyl, allyl, 3-methyl-allyl, lower cycloalkyl-methyl, lower cydoalkyl-ethyl, lower alkoxylower alkyl, di(lower alkyl)amino-lower alkyl, lower alkanoyl, lower cycloalkyl-carbonyl, or a benzyl or benzoyl group in which the benzene ring is optionally substituted as in R2;
and
R4 is hydrogen, lower alkyl, lower alkoxy, halogen, hydroxy, trifluoromethyl, di(lower alkyl)amino, or a benzyloxy group in which the benzene ring is optionally substituted as in R2; are described which are selective inhibitors of the action of the thromboxane synthetase enzyme, but which do not significantly affect the actions of the prostacyclin synthetase or cyclo-oxygenase enzymes, and which are therefore useful in the treatment of ischaemic heart disease, stroke, transient ischaemic attack and migraine. All the compounds, except that In which R1, R2, R3 and R4 are each hydrogen, are novel. Methods for their preparation are also described.
式中的被取代的 3-咪唑-1-基甲基)吲哚:
其中
R1 是氢或低级烷基;
R2 是氢、低级烷基、低级环烷基、金刚烷基、或苯基或苄基,其中苯环可选地被卤素、羟基、低级烷基、低级烷氧基或三氟甲基单取代;
R3 是氢、低级烷基、烯丙基、3-甲基-烯丙基、低级环烷基-甲基、低级环烷基-乙基、低级烷氧基低级烷基、二(低级烷基)氨基低级烷基、低级烷酰基、低级环烷基-羰基,或其中苯环被 R2 中任选取代的苄基或苯甲酰基;
和
R4 是氢、低级烷基、低级烷氧基、卤素、羟基、三氟甲基、二(低级烷基)氨基或苄氧基,其中苯环如 R2 中那样被任选取代;所述化合物是血栓素合成酶作用的选择性抑制剂,但对前列环素合成酶或环氧化酶的作用无明显影响,因此可用于治疗缺血性心脏病、中风、短暂性脑缺血发作和偏头痛。除 R1、R2、R3 和 R4 均为氢的化合物外,所有化合物均为新型化合物。此外,还介绍了制备这些化合物的方法。