PROCESS FOR THE PREPARATION OF A STABLE POLYMORPHIC FORM OF ATOVAQUONE
    3.
    发明申请
    PROCESS FOR THE PREPARATION OF A STABLE POLYMORPHIC FORM OF ATOVAQUONE 有权
    制备稳态多形态多形态的方法

    公开(公告)号:US20150307431A1

    公开(公告)日:2015-10-29

    申请号:US14574242

    申请日:2014-12-17

    IPC分类号: C07C46/00

    摘要: The present invention provides a process for the preparation of a stable polymorph III of Atovaquone exhibiting characteristic peaks (expressed in degrees 20±0.2°θ) at about 6.9, 9.6, 14.1, 14.7, 17.0, 18.5, 19.1, 19.9, 20.3, 22.0, 22.6, 23.2, 24.2, 26.8, and 28.5, which comprises: (a) providing a sample of Atovaquone particles; (b) heating the sample of Atovaquone particles at a minimal temperature of between 140° C. to 160° C. depending on the particle size of the sample; and (c) cooling the sample to obtain the stable polymorphic form of Atovaquone.

    摘要翻译: 本发明提供了一种制备在约6.9,9.6,14.1,14.7,17.0,18.5,19.1,19.9,20 22.0,22.6,23.2,24.2,26.8和28.5,其包括:(a)提供Atovaquone颗粒的样品; (b)根据样品的粒度在140℃至160℃的最低温度下加热Atovaquone颗粒样品; 和(c)冷却样品以获得稳定的多形态阿托伐醌。