申请人:THE GREEN CROSS CORPORATION
公开号:EP0379737A2
公开(公告)日:1990-08-01
A treating agent of angiospasm is disclosed, which contains, as an active ingredient, a dihydropyridine derivative represented by formula (I):
wherein R₁, R₂ and R₃ which may be the same or different, each represents an alkyl group or an alkoxyalkyl group; R₄ and R₅, which may be the same or different, each represents a hydrogen atom, a halogen atom, a nitro group, a halogenated alkyl group, an alkyl-sulfonyl group, a halogenated alkoxyl group, an alkylsulfinyl group, an alkyl group, an alkoxyl group, a cyano group, an alkoxycarbonyl group or an alkylthio group, provided that R₄ and R₅ do not simultaneously represent a hydrogen atom; X represents a vinylene group or an azomethine group; A represents an alkylene group ; and B represents -N(R₆)₂ or
wherein R₆ and R₇ each represents a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or a pyridyl group; Ar represents an aryl group or a pyridyl group; and n represents 0 or an integer of 1 or 2, or a pharmaceutically acceptable acid addition salt thereof. The agent exhibits high angiospasm inhibitory activity and extremely low toxicity.
本发明公开了一种治疗血管痉挛的治疗剂,其包含以下式子(I)所代表的二氢吡啶衍生物作为活性成分:其中,R₁、R₂和R₃可能相同也可能不同,每个代表烷基或烷氧基烷基;R₄和R₅可能相同也可能不同,每个代表氢原子、卤素原子、硝基、卤代烷基、烷基磺酰基、卤代烷氧基、烷基亚磺酰基、烷基、烷氧基、氰基、烷氧羰基或烷基硫基,但R₄和R₅不能同时代表氢原子;X代表乙烯基或偶氮基;A代表烷基;B代表-N(R₆)₂或其中R₆和R₇每个代表氢原子、烷基、芳基烷基、芳基或吡啶基;Ar代表芳基或吡啶基;n代表0或1或2的整数,或其药学上可接受的酸加盐。该治疗剂表现出高的抑制血管痉挛活性和极低的毒性。