申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:US05179125A1
公开(公告)日:1993-01-12
Novel N-substituted mercaptopropanamide derivatives of the formula: ##STR1## wherein R.sub.1 is mercapto or a group convertible into mercapto when cleaved within the biobody, W is hydrogen atom, an alkyl or an aralkyl, R.sub.2 is an aryl which may optionally have substituent(s), a heterocyclic group which may optionally have substituent(s), or an alkyl which may optionally have substituent(s), X is a cycloalkylene, a cycloalkylidene, or a phenylene which may optionally have substituent(s) or may optionally be fused with other ring, and R.sub.3 is carboxyl or a group convertible into carboxyl when cleaved within the biobody, or a pharmaceutically acceptable salt thereof, and a solid solution of said N-substituted mercaptopropanamide derivative with an amino acid, which have excellent enkephalinase inhibitory activity and are useful for the treatment of mild to moderate pain, and a pharmaceutical composition containing said compounds as an active ingredient, and processes for preparing these compounds.
N-取代巯基丙酰胺衍生物的化学式为:##STR1## 其中R.sub.1是巯基或在生物体内裂解时可转化为巯基的基团,W是氢原子、烷基或芳基烷基,R.sub.2是芳基,可选择地具有取代基,是可能可选择地具有取代基的杂环基,或是可能可选择地具有取代基的烷基,X是环烷基、环烷基亚甲基或苯亚甲基,可选择地具有取代基或可选择地与其他环融合,R.sub.3是羧基或在生物体内裂解时可转化为羧基的基团,或其药学上可接受的盐,以及所述N-取代巯基丙酰胺衍生物与氨基酸的固体溶液,具有优异的脑内啡酰肽酶抑制活性,适用于轻至中度疼痛的治疗,以及含有所述化合物作为活性成分的药物组合物,以及制备这些化合物的方法。