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    • 14. 发明授权
    • Method for making tetrabenazine compounds
    • 制备丁苯那嗪化合物的方法
    • US07897768B2
    • 2011-03-01
    • 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。
    • 17. 发明授权
    • Fluoroalkyl tetrabenazine carbinol compounds as imaging agents and probes
    • 氟烷基四苯并嗪甲醇化合物作为成像剂和探针
    • US08013161B1
    • 2011-09-06
    • US11952325
    • 2007-12-07
    • Kande Kankanamalage Dayarathna AmarasingheMichael James RishelSean Richard DinnBruce Fletcher Johnson
    • Kande Kankanamalage Dayarathna AmarasingheMichael James RishelSean Richard DinnBruce Fletcher Johnson
    • C07D455/06
    • C07D455/06A61K51/0455C07D455/02
    • The present invention provides novel fluoroalkyl tetrabenazine carbinol compounds having structure I wherein R1 is a C1-C10 fluorinated aliphatic radical; R2 is a C1-C10 aliphatic radical; R3 is hydrogen or a C1-C10 aliphatic radical; R4 is hydrogen or a C1-C10 aliphatic radical; and R5 is hydrogen, a C1-C10 aliphatic radical, a C2-C10 cycloaliphatic radical, or a C2-C20 aromatic radical. In a particular embodiment, —OR5 is an ester moiety. The fluoroalkyl tetrabenazine carbinol compounds are provided in both racemic and enantiomerically enriched forms and may comprise either or both of fluorine-18 and fluorine 19. The fluoroalkyl tetrabenazine carbinol compounds are shown to possess high affinity for VMAT-2, a biomarker implicated in human diabetes. The fluoroalkyl tetrabenazine carbinol compounds comprising a fluorine-18 group are useful as PET imaging agents targeting the VMAT-2 biomarker. The non-radiolabled fluoroalkyl tetrabenazine carbinol compounds are useful as probes for the discovery of PET imaging agents.
    • 本发明提供具有结构I的新型氟代烷基四苯并嗪甲醇化合物,其中R 1是C 1 -C 10氟化脂族基; R2是C1-C10脂族基团; R3是氢或C1-C10脂族基; R4是氢或C1-C10脂族基; 并且R 5是氢,C 1 -C 10脂族基,C 2 -C 10脂环族基或C 2 -C 20芳族基。 在一个具体实施方案中,-OR 5是酯部分。 氟烷基四苯并嗪甲醇化合物以外消旋和对映异构体富集的形式提供,并且可以包含氟-18和氟19中的一种或两种。氟烷基丁苯那嗪甲醇化合物显示对VMAT-2具有高亲和力,VMAT-2是涉及人类糖尿病的生物标记 。 包含氟-18基团的氟代烷基四苯并嗪甲醇化合物可用作靶向VMAT-2生物标志物的PET显像剂。 非放射性氟烷基丁苯那嗪甲醇化合物可用作发现PET成像剂的探针。