METHOD FOR THE PREPARATION OF 2'-DEOXY-2',2'-DIFLUOROCYTIDINE
    1.
    发明公开
    METHOD FOR THE PREPARATION OF 2'-DEOXY-2',2'-DIFLUOROCYTIDINE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON 2'-脱氧-2',2'-二氟胞嘧啶

    公开(公告)号:EP1831236A4

    公开(公告)日:2013-11-20

    申请号:EP05823850

    申请日:2005-12-29

    IPC分类号: C07H19/04

    CPC分类号: C07H19/04

    摘要: This invention relates to an improved method for stereoselectively preparing 2¢¥-deoxy-2¢¥,2¢¥-difluorocytidine of formula (I), which comprises the steps of reacting a 1-halo ribofuranose compound of formula (III) with a nucleobase of formula (IV) in a solvent to obtain a nucleoside of formula (II) with removing the silyl halide of formula (V) produced during the reaction; and deprotecting the nucleoside of formula (II) to obtain 2¢¥-deoxy-2¢¥,2¢¥-difluorocytidine of formula (I).

    摘要翻译: 本发明涉及立体选择性地制备式(I)的2β-脱氧-2β,2β-二氟胞苷的改进方法,该方法包括使式(III)的1-卤代呋喃核糖化合物与式 (IV)的核碱在溶剂中反应以获得式(II)的核苷,同时除去在反应期间产生的式(V)的甲硅烷基卤化物; (II)的核苷去保护,得到式(I)的2' - 脱氧-2',2'' - 二氟胞苷。