Antiproliferative compounds having a structure represented by formula (II), where n, R
1
, R
2
, R
3
, R
4
, and R
5
are as defined herein, can be used to treat tumors, optionally when conjugated to a ligand such as an antibody:
具有结构式(II)所表示的抗增殖化合物,其中n、R1、R2、R3、R4和R5的定义如本文所述,可以用于治疗肿瘤,可选择与
配体如
抗体结合使用。