Anthracycline glycosides of the formula I ##STR1## wherein R is hydrogen or hydroxyl and the hydrochlorides thereof, and which are useful in treating certain mammalian tumors, are prepared by condensing daunomycinone with the novel sugar, 4-O-methyl-2,3,6-trideoxy-3trifluoroacetamidoribohexopyranosyl chloride in an inert organic solvent and in the presence of a soluble silver salt and a dehydrating agent to form 3', 4' -diepi-4'-O-methyl-N-trifluoroacetyl daunorubicin, and removing the N-trifluoroacetyl group therefrom. This gives the compound wherein R is hydrogen. The former is converted to the corresponding hydroxyl compound by conventional means.
式I的
蒽环类糖苷 ##STR1## 其中R是氢或羟基,以及其盐酸盐,用于治疗某些哺乳动物肿瘤,通过在惰性有机溶剂中,在可溶性
银盐和脱
水剂的存在下,将多诺环霉素酮与新型糖4-O-甲基-2,3,6-三去氧-3-三
氟乙酰胺基葡萄六糖基
氯缩合,形成3',4'-二表-4'-O-甲基-N-三
氟乙酰基多诺霉素,然后去除N-三
氟乙酰基,得到其中R为氢的化合物。前者可通过常规方法转化为相应的羟基化合物。