A method of preparing an anthracyclin such as epirubicin from a starting material comprising 13-dihydrodaunorubicine (13-daunorubicinol). The method comprises producing N-Trifluoroacetyl-13-daunorubicinol from 13-daunorubicinol by acylation. The N-Trifluoroacetyl-13-daunorubicinol is reacted with an aprotic solvent and an acylating agent to produce an intermediate sulfoxy salt which is treated with a strong base to produce 4′-keto-N-Trifluoroacetyldaunorubicin. The 4′-keto-N-Trifluoroacetyldaunorubicin is reacted with a reducing agent, such as borohydride of an alkaline metal, to produce N-Trifluoroacetyl-4′-epi-daunorubicin. The N-Trifluoroacetyl-4′-epi-daunorubicin is hydrolyzed in a basic solution to produce an intermediate compound. The intermediate compound is reacted with a halogenizing agent to produce a 14-Hal-derivative. The 14-Hal derivative is hydrolized in the presence of a formate of an alkaline metal to produce the desired final compound.
一种从含有13-去氢异
柔红霉素(13-去异
柔红霉素醇)的起始物质制备类
蒽环素(如
表柔比星)的方法。该方法包括通过酰化制备N-三
氟乙酰基-13-去异
柔红霉素醇(13-
DA醇)。将N-三
氟乙酰基-13-
DA醇与无
水溶剂和酰化剂反应,产生中间的
磺酸盐,该
磺酸盐经强碱处理后产生4'-酮基-N-三
氟乙酰基异
柔红霉素。将4'-酮基-N-三
氟乙酰基异
柔红霉素与还原剂(如一种碱
金属的
硼氢化物)反应,产生N-三
氟乙酰基-4'-epi-异
柔红霉素。将N-三
氟乙酰基-4'-epi-异
柔红霉素在碱性溶液中
水解,产生中间化合物。将中间化合物与卤化剂反应,产生14-Hal衍
生物。在碱性
金属
甲酸盐的存在下
水解14-Hal衍
生物,产生所需的最终化合物。