申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:US04593092A1
公开(公告)日:1986-06-03
The invention provides a novel spiro-linked pyrrolidine-2,5-dione of the formula; ##STR1## wherein X.sub.1 and X.sub.2 each independently represent a hydrogen, a halogen atom, a lower alkyl or lower alkoxy group; Y is a methylene group, oxygen or sulfur atom; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently represent a hydrogen atom, a lower alkyl group or forming a benzene ring together with their adjacent carbon atoms; the base salts thereof with pharmaceutically acceptable cations, and processes for their manufactures. The compounds of formula [I] useful as aldose reductase inhibitors and as therapeutic agents for treatment of chronic diabetic complications are also disclosed.
该发明提供了一种新颖的螺环联接的吡咯烷-2,5-二酮,其化学式为:##STR1## 其中X.sub.1和X.sub.2各自独立地代表氢、卤原子、低碳基或低碳氧基;Y代表亚甲基、氧原子或硫原子;R.sub.1、R.sub.2、R.sub.3和R.sub.4各自独立地代表氢原子、低碳基或与其相邻碳原子共同形成苯环;其与药学上可接受的阳离子形成的盐和其制备方法。还公开了化合物的化学式[I],用作醛糖还原酶抑制剂和治疗慢性糖尿病并发症的治疗剂。