申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP1726584A1
公开(公告)日:2006-11-29
The present invention provides a compound represented by Formula (I)
(wherein R1 and R2 are the same or different, and each represents a hydrogen atom, substituted or unsubstituted lower alkyl and the like,
R3 represents substituted or unsubstituted aryl, a substituted or unsubstituted aromatic heterocyclic group and the like,
R4 and R5 are the same or different, and each represents a hydrogen atom, halogen, substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl and the like, proviso that they are not simultaneously hydrogen atoms, and
R6 represents hydroxy or substituted or unsubstituted lower alkoxy), or a pharmaceutically acceptable salt thereof and the like.
本发明提供了一种由式 (I) 表示的化合物
(其中 R1 和 R2 相同或不同,各自代表氢原子、取代或未取代的低级烷基等、
R3 代表取代或未取代的芳基、取代或未取代的芳杂环基团等、
R4 和 R5 相同或不同,各自代表氢原子、卤素、取代或未取代的低级烷基、取代或未取代的芳基等,但它们不能同时代表氢原子,以及
R6 代表羟基或取代或未取代的低级烷氧基),或其药学上可接受的盐等。