申请人:TAIHO PHARMACEUTICAL COMPANY LIMITED
公开号:EP0815859A1
公开(公告)日:1998-01-07
The present invention is directed to an intimal hypertrophy inhibitor containing as the active ingredient an oxyindole derivative represented by the following formula (I) or a salt thereof:
(wherein R1 represents a hydrogen atom; a phenyl group which may be substituted by a lower alkyl group, a lower alkoxy group, a lower alkylaminoalkoxy group, a hydroxy group, an amino group, a lower alkylamino group, or a halogen atom; or a pyridyl group which may be substituted by a lower alkyl group, a lower alkoxy group, a lower alkylaminoalkoxy group, a hydroxy group, an amino group, a lower alkylamino group, a halogen atom, a lower alkoxycarbonyl group, or a carboxyl group; R2 represents a phenyl group which may be substituted; or a pyridyl group which may be substituted by a lower alkyl group, a lower alkoxy group, a lower alkylaminoalkoxy group, a hydroxy group, an amino group, a lower alkylamino group, a halogen atom, a lower alkoxycarbonyl group, or a carboxyl group; R3 represents a hydrogen atom; a lower alkyl, benzyl, or a benzenesulfonyl group which may be substituted; or an acyl group; R4 represents a hydrogen atom; a lower alkoxy group, a halogen atom, an amino group, a lower alkylamino group, a carboxyl group, a lower alkoxycarbonyl group; a phenylcarbomoyl group which may be substituted; or a trifluoromethyl group; X represents CH or N; n represents a number between 0 and 4 inclusive that indicates the number of substituents; and the broken/solid double line denotes a single bond or a double bond). The intimal hypertrophy inhibitor of the present invention exhibits excellent inhibitory action against intimal hypertrophy, and thus is useful as a preventive/therapeutic/ameliorating agent for proliferative vascular diseases such as restenosis after PTCA, arteriosclerosis, peripheral embolism, and angiitis.
本发明涉及一种内膜肥厚抑制剂,其活性成分含有下式(I)代表的氧吲哚衍生物或其盐:
(其中 R1 代表氢原子;可被低级烷基、低级烷氧基、低级烷氨基烷氧基、羟基、氨基、低级烷基氨基或卤素原子取代的苯基;或可被低级烷基、低级烷氧基、低级烷氨基烷氧基、羟基、氨基、低级烷基氨基、卤素原子、低级烷氧基羰基或羧基取代的吡啶基;R2 代表可被取代的苯基;或可被低级烷基、低级烷氧基、低级烷氨基烷氧基、羟基、氨基、低级烷胺基、卤素原子、低级烷氧羰基或羧基取代的吡啶基;R3 代表氢原子;低级烷基、苄基或可被取代的苯磺酰基;或酰基; R4 代表氢原子;低级烷氧基、卤素原子、氨基、低级烷酰胺基、羧基、低级烷氧羰基;X代表CH或N;n代表0至4之间的数字,表示取代基的数目;断线/实线双线表示单键或双键)。本发明的内膜肥厚抑制剂对内膜肥厚具有良好的抑制作用,因此可作为增生性血管疾病(如 PTCA 后再狭窄、动脉硬化、外周栓塞和血管炎)的预防/治疗/改善药物。