申请人:British Biotech Pharmaceuticals Ltd.
公开号:US06495597B1
公开(公告)日:2002-12-17
Compounds of formula (I)
wherein R4 is an ester or thioester group and R, R1, R2 and R3 are as defined in the specification, inhibit proliferation of tumor cells.
式(I)中的化合物,其中R4是酯或硫酯基团,R、R1、R2和R3如规范中所定义,能够抑制肿瘤细胞的增殖。