It has been found that diacetylation of the phenolic hydroxyl groups at C-6 and C-11 of daunomycin provides a product that undergoes reduction of the ring C quinone to a hydroquinone without loss of the glycosyloxy function at C-7. Access to a stable heptaacetate incorporating the nuclear bishydroquinone ensemble is thus provided. Basic hydrolysis of this compound accompanied by oxidation restores
已经发现,
道诺霉素的 C-6 和 C-11 处的
酚羟基的
二乙酰化提供了一种产物,该产物在不丧失 C-7 处的糖基氧基官能团的情况下将环 C 醌还原为
氢醌。因此提供了获得包含核双
氢醌系综的稳定七
乙酸酯的途径。该化合物的碱性
水解伴随氧化还原 N-乙酰
道诺霉素。该反应的成功揭示了通过这种无色中间体形成醌甲基化物的惊人抗性