申请人:SANWA KAGAKU KENKYUSHO CO., LTD.
公开号:EP3072884A1
公开(公告)日:2016-09-28
The object of the present invention is to provide a compound having an antagonistic action against µ-opioid receptors, which causes less side effects and thus is highly safe.
A compound represented by the general formula (I), or a pharmacologically acceptable salt thereof:
wherein
R1 and R2 are the same or different, and each represents a hydrogen atom or a halogen atom, provided that R1 and R2 are not simultaneously halogen atoms,
R3 represents a C1-C3 alkyl group or a vinyl group, and
R4 represents the formula (II):
wherein R5 represents a hydroxy group or a C1-C3 alkoxy group, and R6 and R7 are the same or different, and each represents a hydrogen atom or a halogen atom;
or the formula (III):
wherein Ring A represents a halogen atom(s)-substituted C5-C7 cycloalkyl group which is optionally substituted by a C1-C3 alkoxy group, or a halogen atom(s)-substituted 5- to 7-membered saturated heterocyclic group.
本发明的目的是提供一种对μ-阿片受体具有拮抗作用的化合物,该化合物的副作用较小,因此安全性高。
通式(I)代表的化合物或其药理学上可接受的盐:
其中
R1 和 R2 相同或不同,各自代表氢原子或卤素原子,但 R1 和 R2 不能同时代表卤素原子、
R3 代表 C1-C3 烷基或乙烯基,以及
R4 代表式 (II):
其中 R5 代表羟基或 C1-C3 烷氧基,R6 和 R7 相同或不同,且各自代表氢原子或卤素原子;
或式 (III):
其中环 A 代表任选被 C1-C3 烷氧基取代的卤原子取代的 C5-C7 环烷基或卤原子取代的 5-7 元饱和杂环基。