申请人:Ding Qingjie
公开号:US20070129416A1
公开(公告)日:2007-06-07
There is provided a compound of formula I
and the pharmaceutically acceptable salts and esters thereof
wherein X
1
, X
2
, R
1
, R
2
, R
3
, R
4
, R
5
and R
6
are herein described.
The compounds exhibit activity as anticancer agents.
提供了一种公式I的化合物以及其药用可接受的盐和酯,其中X1,X2,R1,R2,R3,R4,R5和R6如本文所述。这些化合物作为抗癌药物表现活性。