申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:US05449787A1
公开(公告)日:1995-09-12
N,N'-disubstituted amide derivatives having potent and selective antagonistic action to 5-HT.sub.3 receptor have been developed by the present invention, which provides antagonistic drugs to 5-HT.sub.3 receptor containing novel N,N'-disubstituted amide derivatives represented by a general formula [I] ##STR1## (wherein R.sub.1 denotes a hydrogen atom or lower alkyl group, R.sub.2 and R.sub.3, which may be identical or different, denote respectively a hydrogen atom, lower alkyl group, lower alkenyl group, nonsubstituted or substituted aryl-lower alkyl group, acyl group or lower alkoxycarbonyl group, R.sub.4 denotes a hydrogen atom, lower alkyl group or lower alkoxy group, A denotes CH or N, and n denotes 1), their hydrates or acid addition salts.
本发明开发了对5-HT.sub.3受体具有强效和选择性拮抗作用的N,N'-二取代酰胺衍生物,提供了包含新型N,N'-二取代酰胺衍生物的5-HT.sub.3受体拮抗药物,其通式为[I],其中R.sub.1代表氢原子或较低的烷基基团,R.sub.2和R.sub.3(可能相同也可能不同)分别代表氢原子、较低的烷基基团、较低的烯基基团、非取代或取代的芳基-较低烷基基团、酰基或较低的烷氧羰基基团,R.sub.4代表氢原子、较低的烷基基团或较低的烷氧基团,A代表CH或N,n代表1,它们的水合物或酸加合盐。