An object is to provide a novel therapeutic drug for adult T-cell leukemia having an ATL cell specific antitumor effect. The therapeutic drug for adult T-cell leukemia according to the invention is characterized by containing a compound represented by the formula I or a prodrug thereof,
wherein R1 is H, OH, an alkoxy group, an acyl group, or a thioacyl group, R2 is an acyl group, a thioacyl group, CONR7R8, or CSNR7R8 (R7 and R8 being each independently H, an alkyl group containing 1 to 3 carbon atoms, or a phenyl group), or R1 and R2 together may form a ring, X1 and X2 may be the same or different and are each -CR3R4 -SiR3R4- or oxygen, and R3 and R4 may be the same or different and are each an alkyl group containing 1 to 6 carbon atoms.
目的是提供一种具有 ATL 细胞特异性抗肿瘤作用的成人 T 细胞白血病新型治疗药物。根据本发明的成人 T 细胞白血病治疗药物,其特征在于含有由式 I 代表的化合物或其原药、
其中 R1 是 H、OH、烷氧基、酰基或
硫代酰基,R2 是酰基、
硫代酰基、CONR7R8 或 CSNR7R8(R7 和 R8 各自独立地为 H、含有 1 至 3 个碳原子的烷基或苯基)、或 R1 和 R2 可共同形成一个环,X1 和 X2 可相同或不同,且各自为 -CR3R4 -SiR3R4- 或氧,R3 和 R4 可相同或不同,且各自为含 1 至 6 个碳原子的烷基。