Many compounds of the anthraquinone series are widely used as antitu~rnor agents. Adrianycin, discovered in 1969 [2], is one of the most effective medicinal preparations, acting against various forms of tumor with a moderate toxicity. The 4- demethoxy analog of rubomycin, assigned the name "carminomycin," was isolated from Actinornadura carmdnata in 1973 by GF Gauze and is also widely used as an antitumor preparation [3]. On the ...