会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 33. 发明申请
    • METHOD FOR MAKING TETRABENAZINE COMPOUNDS
    • 制备四羧酸化合物的方法
    • US20080306267A1
    • 2008-12-11
    • US11760359
    • 2007-06-08
    • Michael James RishelKande Kankananamalage Dayarathna AmarasingheSean Richard DinnBruce Fletcher Johnson
    • Michael James RishelKande Kankananamalage Dayarathna AmarasingheSean Richard DinnBruce Fletcher Johnson
    • C07D455/06
    • C07D455/06C07D217/16C07D217/18Y02P20/55
    • A method of preparing a tetrabenazine compound (TBZ compound) having structure I comprising the steps of reacting a nucleophilic alkenyl species with aldehyde compound II and oxidizing the resultant allylic alcohol to provide enone III. The protecting group P1 on the tetrahydroisoquinoline nitrogen is removed and the resultant deprotected intermediate is induced to undergo an amino cyclization reaction to provide a product TBZ compound having structure I. The method may be used to prepare either enantiomeric form of tetrabenazine; (+)-tetrabenazine or (−)-tetrabenazine. Alternatively the method may be adapted to provide a mixture enriched in one tetrabenazine enantiomer, a racemic mixture, or a diastereomeric mixture of tetrabenazine compounds. In addition, the present invention provides novel synthetic intermediate compositions which may be used to prepare either or both enantiomers of tetrabenazine, derivatives of tetrabenazine, and analogs of tetrabenazine.
    • 制备具有结构I的丁苯那嗪化合物(TBZ化合物)的方法包括以下步骤:使亲核烯基物质与醛化合物II反应并氧化得到的烯丙基醇以提供烯酮III。 除去四氢异喹啉氮上的保护基P1,将所得脱保护的中间体诱导进行氨基环化反应,得到具有结构I的产物TBZ化合物。该方法可用于制备对映体形式的丁苯那嗪; (+) - 丁苯那嗪或( - ) - 丁苯那嗪。 或者,该方法可以适于提供富集一种四苯并嗪对映异构体,外消旋混合物或丁苯那嗪化合物的非对映体混合物的混合物。 此外,本发明提供新的合成中间体组合物,其可用于制备丁苯那嗪,丁苯那敏的衍生物和丁苯那嗪的类似物之一或两者的对映异构体。