Compounds of formula (I)
(wherein X is hydrogen, NRR¹, SR, OR or halogen; R and R¹ may be the same or different and are selected from hydrogen, C₁₋₄alkyl and aryl) and pharmaceutically acceptable derivatives thereof are described having anticancer activity.
式(I)化合物
(其中 X 是氢、NRR¹、SR、OR 或卤素;R 和 R¹ 可以相同或不同,选自氢、C₁₋₄烷基和芳基)及其药学上可接受的衍
生物具有抗癌活性。