申请人:Tianjin Hemay Bio-Tech Co., ltd.
公开号:US20160185728A1
公开(公告)日:2016-06-30
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 R
1
, R
2
, R
3
and R
4
are each as defined in the present application.
本发明揭示了一种公式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的定义与本申请中定义的相同。