Process for the purification of gabapentin
    8.
    发明授权
    Process for the purification of gabapentin 有权
    加巴喷丁的纯化方法

    公开(公告)号:US07989658B2

    公开(公告)日:2011-08-02

    申请号:US11722056

    申请日:2005-12-15

    IPC分类号: C07C227/40 C07C229/28

    摘要: The present invention relates to a process for the purification of gabapentin. The process relates to the addition of hydrochloric acid to an aqueous solution or suspension of gabapentin, before, during or after the concentration step of that solution, and the subsequent slurry of the gabapentin by the addition of an alcoholic solvent. The so obtained gabapentin has an high purity degree and, in particular, is characterized by a low content of lactam.

    摘要翻译: 本发明涉及一种纯化加巴喷丁的方法。 该方法涉及在该溶液的浓缩步骤之前,之中或之后向加巴喷丁的水溶液或悬浮液中加入盐酸,以及通过加入醇溶剂加入加巴喷丁的后续浆液。 如此获得的加巴喷丁具有高纯度,特别是其内酰胺含量低。

    Process for the purification of gabapentin
    9.
    发明授权
    Process for the purification of gabapentin 有权
    加巴喷丁的纯化方法

    公开(公告)号:US07365226B2

    公开(公告)日:2008-04-29

    申请号:US10582790

    申请日:2004-12-14

    IPC分类号: C07C61/08

    CPC分类号: C07C227/40 C07C229/28

    摘要: A process for the preparation of gabapentin comprising the passage of a salt of the same through a ionic exchange resin of strong cationic type, the elution of the gabapentin which has fixed onto the column and the crystallization from organic solvent, characterized in that the resin is regenerated by using a mineral acid in a molar quantity between 50 and 90%, is described.

    摘要翻译: 一种用于制备加巴喷丁的方法,其包括使其通过强阳离子型离子交换树脂,其中固定在柱上的加巴喷丁的洗脱和从有机溶剂中结晶的洗脱,其特征在于树脂是 通过使用摩尔量为50-90%的无机酸再生。