申请人:Taiho Pharmeutical Co., Ltd.
公开号:US05977130A1
公开(公告)日:1999-11-02
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: ##STR1## (wherein R.sup.1 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; R.sup.2 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; R.sup.3 represents a hydrogen atom; a lower alkyl, benzyl, or a benzenesulfonyl group which may be substituted; or an acyl group; R.sup.4 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增生抑制剂,其含有下式(I)所表示的氧吲哚衍生物或其盐作为活性成分:##STR1##(其中,R.sup.1表示氢原子;苯基,其可以被低碳基,低烷氧基,低烷基氨基烷氧基,羟基,氨基,低烷基氨基,或卤素原子取代;或吡啶基,其可以被低碳基,低烷氧基,低烷基氨基烷氧基,羟基,氨基,低烷基氨基,卤素原子,低烷氧羰基基团或羧基取代;R.sup.2表示苯基,其可以被取代;或吡啶基,其可以被低碳基,低烷氧基,低烷基氨基烷氧基,羟基,氨基,低烷基氨基,卤素原子,低烷氧羰基基团或羧基取代;R.sup.3表示氢原子;低烷基,苄基或可被取代的苯磺酰基;或酰基;R.sup.4表示氢原子;低烷氧基,卤素原子,氨基,低烷基氨基,羧基,低烷氧羰基基团取代的苯基羰基基团;或三氟甲基基团;X表示CH或N;n表示0到4之间的数字,表示取代基的数量;断/实双线表示单键或双键。本发明的内膜增生抑制剂具有出色的内膜增生抑制作用,因此可用作预防/治疗/改善增殖性血管疾病,如PTCA后再狭窄,动脉硬化,周围栓塞和血管炎的药物。