PURIFICATION METHOD FOR ADEFOVIR DIPIVOXIL
    3.
    发明申请
    PURIFICATION METHOD FOR ADEFOVIR DIPIVOXIL 审中-公开
    ADEFOVIR DIPIVOXIL的纯化方法

    公开(公告)号:US20110207928A1

    公开(公告)日:2011-08-25

    申请号:US13063449

    申请日:2009-09-10

    IPC分类号: C07F9/6561

    摘要: The present invention relates to a novel method of purifying adefovir dipivoxil of Formula 1. The purification method according to the present invention comprises the steps of dissolving impure adefovir dipivoxil containing byproducts generated during a synthetic reaction, salts thereof or complexes thereof in water or a water-containing mixed solvent; purifying the adefovir dipivoxil solution through a reverse-phase column; and adding a base to the purified adefovir dipivoxil solution and extracting the same with an organic solvent.Further, the present invention provides a method of preparing amorphous adefovir dipivoxil by removing the solvent from the high purity solution of adefovir dipivoxil represented by formula I purified by the above method.

    摘要翻译: 本发明涉及一种纯化式1的阿德福韦酯的新方法。根据本发明的纯化方法包括以下步骤:将含有合成反应中产生的副产物的不纯的阿德福韦酯,其盐或其配合物溶于水或水中 含有混合溶剂; 通过反相柱纯化阿德福韦酯溶液; 并向纯化的阿德福韦酯溶液中加入碱,并用有机溶剂萃取。 此外,本发明提供了通过用上述方法纯化的由式I表示的阿德福韦酯的高纯度溶液除去溶剂来制备无定形阿德福韦酯的方法。