Process for preparing 5-amino-2,4,6-triiodoisophthalic acid dichloride
by chlorination of the corresponding acid in the presence of a tertiary
amine salt or quaternary ammonium salt
    22.
    发明授权
    Process for preparing 5-amino-2,4,6-triiodoisophthalic acid dichloride by chlorination of the corresponding acid in the presence of a tertiary amine salt or quaternary ammonium salt 失效
    通过在叔胺盐或季铵盐的存在下氯化相应的酸来制备5-氨基-2,4,6-三碘代邻苯二甲酸二氯化物的方法

    公开(公告)号:US5856570A

    公开(公告)日:1999-01-05

    申请号:US836984

    申请日:1997-05-29

    CPC分类号: C07C227/18

    摘要: A process for the preparation of 5-amino-2,4,6-triiodoisophthalic acid dichloride by chlorinating 5-amino-2,4,6-triiodoisophthalic acid with thionyl chloride in the presence of a suitable solvent and of a tertiary amine salt or quaternary ammonium salt in a molar ratio from 1;1 to 1;2 with respect to 5-amino-2,4,6-triiodoisophathalic acid is described. 5-amino-2,4,6-triiodoisophthalic acid dichloride is an intermediate useful for the preparation of iodinated contrast agents.

    摘要翻译: PCT No.PCT / EP95 / 04635 371日期1997年5月29日 102(e)日期1997年5月29日PCT提交1995年11月24日PCT公布。 第WO96 / 16927号公报 日期1996年6月6日制备5-氨基-2,4,6-三碘代邻苯二甲酸二氯化物的方法,该方法是在合适的溶剂存在下,用亚硫酰氯将5-氨基-2,4,6-三碘代邻苯二甲酸氯化, 描述了相对于5-氨基-2,4,6-三碘间苯二甲酸,摩尔比为1; 1至1; 2的叔胺盐或季铵盐。 5-氨基-2,4,6-三碘邻苯二甲酸二氯化物是可用于制备碘化造影剂的中间体。

    PROCESSES FOR THE PRODUCTION OF POLYMORPHIC FORMS OF RIFAXIMIN
    27.
    发明申请
    PROCESSES FOR THE PRODUCTION OF POLYMORPHIC FORMS OF RIFAXIMIN 有权
    生产RIFAXIMIN多形态的方法

    公开(公告)号:US20110160449A1

    公开(公告)日:2011-06-30

    申请号:US13041346

    申请日:2011-03-04

    IPC分类号: C07D491/22

    CPC分类号: C07D498/22

    摘要: Crystalline polymorphous forms of rifaximin (INN) antibiotic named rifaximin α and rifaximin β, and a poorly crystalline form named rifaximin γ, useful in the production of medicinal preparations containing rifaximin for oral and topical use and obtained by means of a crystallization carried out by hot-dissolving the raw rifaximin in ethyl alcohol and by causing the crystallization of the product by addition of water at a determinate temperature and for a determinate period of time, followed by a drying carried out under controlled conditions until reaching a settled water content in the end product, are the object of the invention.

    摘要翻译: 结晶多形态的利福昔明(INN)抗生素名为利福昔明α和利福昔明,并且结晶形式名为利福昔明γ,可用于生产含有利福昔明用于口服和局部使用的药物制剂,并通过结晶进行 将生的利福昔明热溶解在乙醇中,并通过在确定的温度下加入水并在一定的时间内引起产物的结晶,然后在受控条件下进行干燥,直到达到沉淀的含水量 最终产品是本发明的目的。

    POLYMORPHIC FORMS ALPHA, BETA AND GAMMA OF RIFAXIMIN
    28.
    发明申请
    POLYMORPHIC FORMS ALPHA, BETA AND GAMMA OF RIFAXIMIN 有权
    多聚体形式的阿尔法,BETA和游戏的RIFAXIMIN

    公开(公告)号:US20110160448A1

    公开(公告)日:2011-06-30

    申请号:US13041332

    申请日:2011-03-04

    IPC分类号: C07D498/22

    摘要: Crystalline polymorphous forms of rifaximin (INN) antibiotic named rifaximin α and rifaximin β, and a poorly crystalline form named rifaximin γ, useful in the production of medicinal preparations containing rifaximin for oral and topical use and obtained by means of a crystallization carried out by hot-dissolving the raw rifaximin in ethyl alcohol and by causing the crystallization of the product by addition of water at a determinate temperature and for a determinate period of time, followed by a drying carried out under controlled conditions until reaching a settled water content in the end product, are the object of the invention.

    摘要翻译: 结晶多形态的利福昔明(INN)抗生素名为利福昔明α和利福昔明,并且结晶形式名为利福昔明γ,可用于生产含有利福昔明用于口服和局部使用的药物制剂,并通过结晶进行 将生的利福昔明热溶解在乙醇中,并通过在确定的温度下加入水并在一定的时间内引起产物的结晶,然后在受控条件下进行干燥,直到达到沉淀的含水量 最终产品是本发明的目的。