申请人:Tianjin Hemay Pharmaceutical Co., Ltd.
公开号:EP3782983A1
公开(公告)日:2021-02-24
Disclosed is a compound of formula (I) and a stereoisomer thereof:
wherein R1, R2, R3 and R4 are as defined in the present disclosure.
本发明公开了一种式(I)化合物及其立体异构体:
其中 R1、R2、R3 和 R4 如本公开中定义。