申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:EP0950405A1
公开(公告)日:1999-10-20
Herein disclosed are therapeutic agents for renal diseases and organ preservatives containing a compound represented by the general formula (1):
wherein X represents an oxygen atom or a group represented by the general formula (2):
where n represents an integer from 0 to 2, R1 represents a hydrogen atom or an acyl group, R2 represents a hydrogen atom, a lower alkyl group or a lower alkenyl group, R3 represents a lower alkyl group, R4, R5 and R6, which may be the same or different, each represents a hydrogen atom or an optionally substituted alkyl group, and R6 further represents a formyl, carboxyl, lower alkoxycarbonyl or optionally substituted carbamoyl group, or R3 and R4 may be taken together to form a five-membered ring, or R5 and R6 may be taken together to form a cycloalkyl group, provided that when the five-membered ring formed by R3 and R4 and the benzene ring form benzofuran or benzo[b]thiophene, R6 is absent.
这里公开的是含有通式(1)所代表的化合物的肾病治疗剂和器官防腐剂:
其中 X 代表氧原子或通式(2)所代表的基团:
其中 n 代表 0 至 2 的整数,R1 代表氢原子或酰基,R2 代表氢原子、低级烷基或低级烯基,R3 代表低级烷基,R4、R5 和 R6 可以相同或不同,各自代表氢原子或任选取代的烷基,R6 进一步代表甲酰基、羧基、低级烷氧基羰基或低级烷氧基羰基、羧基、低级烷氧基羰基或任选取代的氨基甲酰基,或 R3 和 R4 可结合在一起形成五元环,或 R5 和 R6 可结合在一起形成环烷基,但当 R3 和 R4 形成的五元环与苯环形成苯并呋喃或苯并[b]噻吩时,R6 不存在。