The present invention relates to novel 4'-demethyl-4- epipodophyllotoxin derivatives of the general formula I
wherein R represents a lower alkyl group, X, represents a hydroxyl group or an amino group, with the proviso that when one of X1 and X2 represents an amino group, the other represents a hydroxy group, and when one of them represents a hydroxy group, the other represents an amino group, or the salts thereof, and to a process for their preparation. The compounds exhibit excellent antitumor activity.
本发明涉及通式 I 的新型 4'-去甲基-4-表
鬼臼毒素衍
生物。
其中 R 代表低级烷基,X 代表羟基或
氨基,但条件是当 X1 和 X2 中一个代表
氨基时,另一个代表羟基,当其中一个代表羟基时,另一个代表
氨基,或其盐类,以及其制备方法。这些化合物具有优异的抗肿瘤活性。