申请人:Ciba-Geigy Corporation
公开号:US05064832A1
公开(公告)日:1991-11-12
Compounds of formula I ##STR1## wherein X.sub.1, X.sub.2, X.sub.3, X.sub.4, X.sub.5, X.sub.6, Y, Z and R.sub.1 -R.sub.4 are as defined in the description, have valuable pharmaceutical properties and are especially active against tumors. They are prepared in a manner known per se.
公式为I的化合物,其中X.sub.1,X.sub.2,X.sub.3,X.sub.4,X.sub.5,X.sub.6,Y,Z和R.sub.1-R.sub.4的定义如描述中所述,具有有价值的药物特性,特别是对肿瘤具有高活性。它们以已知的方式制备。