Compounds represented by the following formula I:
 in which:
R1 to R5 can have various meanings of which alkyl, substituted or non-substituted aryl, and m is equal to 0 or 1, X is selected from (CR6R7)n in which n = 0 or 1, and CO are disclosed. These compounds are useful as anti-tumor drugs, especially with pro-oxidizing activity.
                            下式 I 所代表的化合物
 其中
R1 至 R5 可以有各种含义,其中包括烷基、取代或非取代芳基,m 等于 0 或 1,X 选自(CR6R7)n(其中 n = 0 或 1)和 CO。这些化合物可用作
抗肿瘤药物,特别是具有促氧化活性。