申请人:Takeda Chemical Industries, Ltd.
公开号:US05770772A1
公开(公告)日:1998-06-23
Disclosed are intermediates for the preparation of novel aminocoumaran derivatives of the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are a hydrogen atom, an acyl group, an alkoxycarbonyl group, an aliphatic group or aromatic group; R.sup.3, R.sup.4 and R.sup.5 are an optionally acylated hydroxyl, optionally substituted amino group, alkoxy group or aliphatic group, or two of R.sup.3, R.sup.4 and R.sup.5 may be linked together to form a carbocyclic group; R.sup.6 and R.sup.7 are an aliphatic group and at least one of them has a methylene group at the .alpha.-position; R.sup.8 and R.sup.9 are a hydrogen atom or an aliphatic group or aromatic group, or a salt thereof is useful for medicines for preventing and treating various diseases such as arterial sclerosis, hepatopathy, cerebrovascular diseases and the like.
本发明涉及一种制备新型氨基香豆素衍生物的中间体,其一般式为(I):##STR1## 其中,R.sup.1和R.sup.2是氢原子、酰基、烷氧羰基、脂肪基或芳香基;R.sup.3、R.sup.4和R.sup.5是可选酰化的羟基、可选取代的氨基、烷氧基或脂肪基,或R.sup.3、R.sup.4和R.sup.5中的两个可以连接在一起形成碳环基;R.sup.6和R.sup.7是脂肪基,其中至少一个在α-位上有一个亚甲基;R.sup.8和R.sup.9是氢原子或脂肪基或芳香基,或其盐,适用于预防和治疗各种疾病,如动脉硬化、肝病、脑血管疾病等。