There are provided spiroindolinone derivatives of the formula
and pharmaceutically acceptable salts and esters thereof
wherein R
1
, R
2
, R
3
, R
4
and R are as herein described.
The compounds exhibit anticancer activity.
提供了以下结构的螺环
吲哚酮衍
生物及其药用盐和酯物,其中R1、R2、R3、R4和R如所述。这些化合物具有抗癌活性。