and the pharmaceutically acceptable salts and esters thereof, wherein X
1
, X
2
, X
3
, Y
1
, Y
2
and R are described herein inhibit the interaction of MDM2 protein with a p53-like peptide and hence have anti proliferative activity.
本文中的药物可接受的盐和酯,其中X1、X2、X3、Y1、Y2和R的描述抑制M
DM2蛋白与类p53肽的相互作用,因此具有抗增殖活性。