Novel polymorph form M of mifepristone and process for its preparation
    5.
    发明申请
    Novel polymorph form M of mifepristone and process for its preparation 审中-公开
    米非司酮的新型多晶型M及其制备方法

    公开(公告)号:US20070105828A1

    公开(公告)日:2007-05-10

    申请号:US11506223

    申请日:2006-08-18

    IPC分类号: A61K31/56 C07J7/00

    CPC分类号: C07J7/00

    摘要: Mifepristone substantially in polymorph form M is provided. Also provided is a process for the preparation of polymorph form M of mifepristone comprising the steps of (a) dissolving crude mifepristone in a polar solvent at an elevated temperature to obtain a clear solution; (b) cooling the solution to a temperature and for a time period sufficient to form a precipitate of mifepristone crystals; and (c) isolating the precipitate of mifepristone crystals to obtain the polymorph form M of mifepristone.

    摘要翻译: 提供基本上呈多晶型M的米非司酮。 还提供了制备米非司酮多晶型M的方法,包括以下步骤:(a)在高温下将粗米非司酮溶解在极性溶剂中以获得澄清溶液; (b)将溶液冷却至足以形成米非司酮晶体沉淀物的温度和时间; 和(c)分离米非司酮晶体的沉淀,得到米非司酮的多晶型M。