Novel y-butyrolactone derivatives having strong ACE inhibitory activity are provided. They are represented by the following general formula (I):
wherein RI and R2 may be the same or different and mean individually a hydrogen atom or a straight-chain or branched alkyl or cycloalkyl group, or R1 and R2 are bonded together to mean an alkylene group having 2 - 6 carbon atoms, R3 denotes a hydrogen atom or a lower alkyl, aralkyl, amino lower alkyl or lower alkoxycarbonylamino lower alkyl group, R4 means a lower alkyl, cycloalkyl or aralkyl group, R5 means a hydrogen atom or a lower alkyl group, or R4 and R5 are bonded together to denote an alkylene group having 2 - 4 atoms, and R6 stands for a hydrogen atom or a lower alkyl or aralkyl group; or a pharmacologically acceptable salt thereof.
本研究提供了具有较强 ACE 抑制活性的新型 y
-丁内酯衍
生物。它们由以下通式(I)表示:
其中 RI 和 R2 可以相同或不同,分别表示氢原子或直链或支链烷基或环烷基,或 R1 和 R2 结合在一起表示具有 2 - 6 个碳原子的亚烷基,R3 表示氢原子或低级烷基、芳烷基、
氨基低级烷基或低级烷氧基羰基
氨基低级烷基,R4 表示氢原子或低级烷基、芳烷基、
氨基低级烷基或低级烷氧基羰基
氨基低级烷基、R4 表示低级烷基、环烷基或芳烷基,R5 表示氢原子或低级烷基,或 R4 和 R5 键合在一起表示具有 2 - 4 个原子的亚烷基,R6 表示氢原子或低级烷基或芳烷基;或其药理上可接受的盐。