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    • 4. 发明公开
    • METHOD FOR MAKING TETRABENAZINE COMPOUNDS
    • 制备四氮杂苯胺化合物的方法
    • EP2176226A1
    • 2010-04-21
    • EP08770100.9
    • 2008-06-04
    • GENERAL ELECTRIC COMPANY
    • RISHEL, Michael JamesAMARASINGHE, Kande Kankananamalage DayarathnaDINN, Sean RichardJOHNSON, Bruce Fletcher
    • C07D217/00C07D217/24C07D455/00
    • 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)的方法包括使亲核烯基物质与醛化合物II反应并氧化所得烯丙醇以提供烯酮III的步骤。 除去四氢异喹啉氮上的保护基团P1,并将所得脱保护中间体进行氨基环化反应,得到具有结构I的产物TBZ化合物。该方法可用于制备丁苯那嗪的对映体形式; (+) - 丁苯那嗪或( - ) - 丁苯那嗪。 或者,该方法可适于提供富含一种丁苯那嗪对映异构体,外消旋混合物或丁苯那嗪化合物的非对映异构混合物的混合物。 此外,本发明提供了新的合成中间体组合物,其可用于制备丁苯那嗪的任一种或两种对映体,丁苯那嗪的衍生物和丁苯那嗪的类似物。