申请人:Zhang Hesheng
公开号:US09187458B2
公开(公告)日:2015-11-17
Disclosed is a compound of formula I, a stereoisomer thereof, a cis-trans-isomer thereof, a tautomer thereof, or a mixture thereof, or a pharmaceutically acceptable salt thereof, a solvate thereof or a prodrug thereof,
wherein R1, R2, R3 and R4 are each as defined in the present application.
本发明涉及一种公式I的化合物,其立体异构体,顺反异构体,互变异构体或其混合物,或其药学上可接受的盐,溶剂化物或前药,其中R1,R2,R3和R4在本申请中的定义。