申请人:Zenyaku Kogyo Kabushiki Kaisha
公开号:US04804668A1
公开(公告)日:1989-02-14
A thiazole derivative represented by the formula I, pharmaceutically acceptable acid addition salt thereof, and a process for preparation thereof ##STR1## wherein R.sub.1 represents --COOR.sub.4, ##STR2## or cyano wherein R.sub.4 represents hydrogen or lower alkyl, and R.sub.5 and R.sub.6 may be the same or different and represent hydrogen, lower alkyl, aryl, amino-lower alkyl, N-lower alkylamino-lower alkyl, N,N-di-lower alkylamino-lower alkyl or R.sub.5 and R.sub.6 are joined to form a N-containing heterocyclic group; R.sub.2 represents hydrogen or lower alkyl; and R.sub.3 represents N-containing heterocyclic group. These compounds are useful as cardiotonic agents.
一种由式I表示的噻唑衍生物,其药学上可接受的酸盐,以及其制备方法。其中,R₁代表--COOR₄,R₂代表氢或较低烷基,R₃代表含氮的杂环基团。这些化合物可用作强心剂。