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    • 9. 发明授权
    • Process for preparing N-acyltetrahydroisoquinoline
    • 制备N-酰基四氢异喹啉的方法
    • US4851537A
    • 1989-07-25
    • US38571
    • 1987-04-15
    • Ryoji NoyoriMasato KitamuraHidemasa TakayaHidenori KumobayashiSusumu Akutagawa
    • Ryoji NoyoriMasato KitamuraHidemasa TakayaHidenori KumobayashiSusumu Akutagawa
    • C07B61/00B01J31/00B01J31/24C07D217/06C07D217/20
    • C07D217/06C07D217/20
    • A process for preparing an N-acyltetrahydroisoquinoline represented by formula (II) ##STR1## wherein A represents a phenylene ring substituted with a hydroxyl group, a lower alkoxy group, an acetoxy group, or a benzyloxy group; R represents a hydrogen atom, a lower alkyl group, or a phenyl group; and X represents a hydrogen atoms, a phenyl group, or a phenyl group substituted with a hydroxyl group, a lower alkoxy group, or an acetoxy group, which comprises asymmetrically hydrogenating an N-acyl-1-methylenetetrahydroisoquinoline or N-acyl-1-benzylidenetetrahydroisoquinoline represented by formula (I) ##STR2## wherein A, R, and X are as defined above, in the presence of an optically active ruthenium-phosphine complex as a catalyst. The process exclusively and efficiently provides a useful isomer of the N-acyltetrahydroisoquinoline of high purity which is useful as an intermediate for synthesizing isoquinoline type alkaloids as pharmaceuticals without involving optical resolution of a racemate.
    • 制备由式(II)表示的N-酰基四氢异喹啉的方法其中A表示被羟基,低级烷氧基,乙酰氧基或苄氧基取代的亚苯基环; R表示氢原子,低级烷基或苯基; X表示氢原子,苯基或被羟基,低级烷氧基或乙酰氧基取代的苯基,其包括不对称地氢化N-酰基-1-亚甲基四氢异喹啉或N-酰基-1- 由式(I)表示的亚苄基四氢异喹啉,其中A,R和X如上所定义,在光学活性钌 - 膦配合物作为催化剂存在下进行。 该方法专门有效地提供了高纯度的N-酰基四氢异喹啉的有用异构体,其可用作合成异喹啉类生物碱作为药物而不涉及外消旋物的光学拆分的中间体。