申请人:Novartis AG
公开号:US08193164B2
公开(公告)日:2012-06-05
A compound of formula (I), or stereoisomers or pharmaceutically acceptable salts thereof,
wherein, R1a, R1b, R2a, R2b, U1, U2, X1, X2 and L are as defined herein.
式(I)的化合物,或其立体异构体或药学上可接受的盐,其中,R1a、R1b、R2a、R2b、U1、U2、X1、X2和L的定义如本文所述。