申请人:OTSUKA PHARMACEUTICAL FACTORY, INC.
公开号:EP0997463A1
公开(公告)日:2000-05-03
The present invention provides a naphthyridine derivative represented by the formula (1)
wherein A is lower alkylene; R1 is H or an electron pair "-"; R2 is optionally substituted phenyl;
when R1 is an electron pair "-", R3 is a group represented by
(wherein R4 and R5 each represent lower alkyl, etc.); when R1 is H, R3 is a group -S-R6 (wherein R6 is lower alkyl, etc.); and R7 is H or lower alkyl; and also provides an analgesic composition containing the above derivative as an active ingredient.
本发明提供了一种由式(1)表示的萘啶衍生物
其中 A 是低级亚烷基;R1 是 H 或电子对"-";R2 是任选取代的苯基;
当 R1 是电子对"-"时,R3 是由以下式表示的基团
(其中R4和R5各自代表低级烷基等);当R1是H时,R3是一个基团-S-R6(其中R6是低级烷基等);R7是H或低级烷基;还提供了一种含有上述衍生物作为活性成分的镇痛组合物。