申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0065392A1
公开(公告)日:1982-11-24
This invention provides medical compositions containing an aldose reductase inhibitory, spirolinked pyrrolidine-2,5-dione of the formula:
wherein Ra, Rb, Rc and Rd are hydrogen or alkyl, or, together with the adjacent ring carbon atoms, form a benzene or pyridine ring B; rings A and B bear 1 or 2 optional substituents; and X is oxygen, sulphur, sulphinyl, sulphonyl, methylene, alkylimino, phenylimino or benzylimino, or, when Ra, Rb, Rc and Rd are hydrogen or alkyl, X is imino; or a pharmaceutically acceptable salt thereof; or a non-toxic biodegradable precursor thereof.
The invention also provides novel compounds of formula I and processes for their manufacture. The compositions are useful in the treatment or prophylaxis of the side-effects of diabetes or galactosemia.
本发明提供了含有醛糖还原酶抑制剂的医用组合物,该组合物含有式中的螺环吡咯烷-2,5-二酮:
其中 Ra、Rb、Rc 和 Rd 是氢或烷基,或与相邻的环碳原子一起形成苯环或吡啶环 B;环 A 和环 B 带有 1 或 2 个任选取代基;X为氧、硫、亚硫酰基、磺酰基、亚甲基、烷基亚氨基、苯基亚氨基或苄基亚氨基,或者当Ra、Rb、Rc和Rd为氢或烷基时,X为亚氨基;或其药学上可接受的盐;或其无毒可生物降解的前体。
本发明还提供了新型的式 I 化合物及其制造工艺。这些组合物可用于治疗或预防糖尿病或半乳糖血症的副作用。