This invention provides pyridylthiazolidine carboxamide derivatives shown by general formula (I) and pharmaceutically acceptable salts thereof:
wherein A¹ is a single bond, carbonyl group or lower alkylene group which may include a carbonyl group and R¹ is a heterocyclic ring which may be substituted with a lower alkyl group; it further provides N-substituted piperazine derivatives useful as intermediates for preparing said compounds (I). Compounds (I) and their salts have PAF-antagonistic activity.
本发明提供了通式(I)所示的
吡啶噻唑烷羧酰胺衍
生物及其药学上可接受的盐类:
其中,A¹为单键、羰基或可包含羰基的低级亚烷基,R¹为可被低级烷基取代的杂环;本发明还提供了N-取代的
哌嗪衍
生物,可作为制备所述化合物(I)的中间体。化合物 (I) 及其盐类具有 PAF 拮抗活性。