2-Cyclic amino-2-(1,2-benzisoxazol-3-yl)acetic acid ester derivatives, process for the preparation thereof and composition containing the same
申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:EP0073645A2
公开(公告)日:1983-03-09
2-Cyclic amino-2-[1,2-benzisoxazol-3-yl]acetic acid derivatives of the formula:
(wherein R, is hydrogen or a halogen atom, R2 is a lower alkyl group, Am is a 5- to 9-membered saturated cyclic amino group which may be substituted by a lower alkyl group, and the piperidine moiety is attached at its 3- or 4-position], and their pharmaceutically acceptable acid addition salts and quaternary ammonium salts have potent anticholinergic antispasmodic activity, while they are weak in side effects such as mydriasis, inhibition of salivary secretion and tachycardia. The preferred com-
and the 1-ethyl-1-methyl piperidinium iodide derivative thereof.
Compounds (I) may be made from Am-H and a 2- haloacetic acid derivative (whose synthesis is described). They can be selectively quaternised at the piperidine N-atom.
式中的 2-环氨基-2-[1,2-苯并异噁唑-3-基]乙酸衍生物:
(其中,R, 是氢原子或卤素原子,R2 是低级烷基,Am 是可被低级烷基取代的 5 至 9 元饱和环状氨基,哌啶分子连接在其 3 位或 4 位],及其药学上可接受的酸加成盐和季铵盐具有强效的抗胆碱能解痉活性,而副作用较弱,如眼球震颤、抑制唾液分泌和心动过速。首选的组合是
和 1-乙基-1-甲基碘化哌啶衍生物。
化合物(I)可以由 Am-H 和 2-卤代乙酸衍生物(其合成方法已描述)制成。它们可以在哌啶 N 原子上进行选择性季铵化。