Anti-virally active carbanucleosides such as entecavir are prepared by a process which utilizes, throughout the synthesis, an aromatic protectant group for the hydroxyl and the alkyl hydroxy groups of the starting material, removed as the final step of a multi-step synthesis. Such protectant groups yield intermediates which are solid and therefore easily purified at various stages of the process, for an economical and relatively fast process for synthesizing the final product.
抗病毒活性的碳基
核苷类药物,如
恩替卡韦等,是通过一种利用起始物的羟基和烷基羟基的芳香保护基在合成过程中始终存在的过程制备的,该保护基在多步合成的最后一步被去除。这种保护基产生的中间体是固体,因此在过程的各个阶段易于纯化,从而实现了一种经济而相对快速的方法来合成最终产品。