Process for preparing a synthetic intermediate for preparation of branched nucleosides
    2.
    发明授权
    Process for preparing a synthetic intermediate for preparation of branched nucleosides 有权
    制备分支核苷合成中间体的方法

    公开(公告)号:US07781576B2

    公开(公告)日:2010-08-24

    申请号:US11644304

    申请日:2006-12-22

    IPC分类号: C07H19/48 C07H19/22

    摘要: A process is provided for the preparation of a key intermediate in the preparation of 2′-branched nucleoside compounds. The process includes contacting a protected precursor 3,4-O-isopropylidene-2-C-substituted-D-arabinono-1,5-lactone with a fluorinating agent under anhydrous conditions and converting the precursor into a protected 2-deoxy-2-halo-2-C-disubstituted ribono-1,5-lactone and optionally into a 2-deoxy-2-halo-2-C-disubstituted ribono-1,4-lactone.

    摘要翻译: 提供了制备2支支化核苷化合物的关键中间体的方法。 该方法包括在无水条件下将受保护的前体3,4-O-异亚丙基-2-C-取代的D-阿拉伯酮-1,5-内酯与氟化剂接触,并将前体转化为受保护的2-脱氧-2- 卤代-2- C-二取代的核糖-1,5-内酯,任选地加入2-脱氧-2-卤代-2- C-二取代的核糖内-1,4-内酯。