申请人:TANABE SEIYAKU CO., LTD.
公开号:EP1364950A1
公开(公告)日:2003-11-26
A pyridopyrimidine or a naphthyridine derivative of the formula (I):
wherein R1 is an optionally substituted nitrogen-containing heterocyclic group, etc.; R2 is H or a lower alkyl group; R3 is H or an optionally substituted lower alkyl group, etc.; R4 is H, a lower alkyl group, COOH, etc.; R5 is H, an optionally substituted aryl, etc; one of X and Y is CH and the other is nitrogen, or both of X and Y are nitrogen; or a pharmaceutically acceptable salt thereof, these compounds exhibiting excellent PDE V inhibitory activities, and being useful in the prophylaxis or treatment of penile erectile dysfunction, etc.
式(I)的吡啶嘧啶或萘啶衍生物:
其中 R1 是任选取代的含氮杂环基团等; R2 是 H 或低级烷基; R3 是 H 或任选取代的低级烷基等; R4 是 H、低级烷基、COOH 等; R5 是 H、任选取代的芳基等; X 和 Y 中的一个是 CH,另一个是氮。这些化合物具有优异的 PDE V 抑制活性,可用于预防或治疗阴茎勃起功能障碍等。