abstract |
(57) [Problem] It is an object of the present invention to provide a novel topoisomerase inhibitor useful as an anticancer agent. SOLUTION: Formula (I): (Wherein, R 1 represents a linear or branched alkyl group, and R 2 represents a purine base or pyrimidine base.) A topoisomerase inhibitor containing a nucleotide alkyl derivative represented by the formula: Inhibitors. |