[Synthesis of rubomycin 13-tert-butoxycarbonylhydrazone and the study of its antitumor action].

13-Tert-butoxycarbonylhydrazone of rubomycin was prepared on interaction of rubomycin with tert-butoxycarbonylhydrazine. The new compound showed a high antitumor activity with respect to lymphosarcoma LIO-1 and Garding-Passey melanoma. The compound had no advantages over the initial rubomycin in the treatment of these tumors, was inferior to rubomycin with respect to its activity against leukemia P-388 and unlike rubomycin had practically no effect on leukemia L-1210.