Resolution and reduction of physostigmine intermediates and derivatives
    1.
    发明授权
    Resolution and reduction of physostigmine intermediates and derivatives 失效
    解析和减少毒扁豆碱中间体及其衍生物

    公开(公告)号:US5571929A

    公开(公告)日:1996-11-05

    申请号:US350819

    申请日:1994-12-07

    IPC分类号: C07D209/34 C07D487/04

    CPC分类号: C07D487/04 C07D209/34

    摘要: One aspect of the present invention provides for the separation of a racemic mixture or a mixture enriched with one or other enantiomer, said mixture comprising the enantiomers of the compound of the formula: ##STR1## wherein R is CN or CONHR' where R' is a C.sub.1 -C.sub.6 alkyl, hydrogen, or benzyl, and R.sub.1 is C.sub.1 -C.sub.6 alkyl or benzyl. Another aspect of the present invention provides a method of preparing a compound of the formula: ##STR2## wherein R is H, C.sub.1 -C.sub.6 alkyl or benzyl, and wherein R.sub.2, R.sub.3, and R.sub.4 are C.sub.1 -C.sub.6 alkyl or benzyl.

    摘要翻译: 本发明的一个方面提供了外消旋混合物或富含一种或其它对映异构体的混合物的分离,所述混合物包含下式化合物的对映异构体:其中R是CN或CONHR,其中R'是 C 1 -C 6烷基,氢或苄基,R 1是C 1 -C 6烷基或苄基。 本发明的另一方面提供了制备下式化合物的方法:其中R是H,C 1 -C 6烷基或苄基,其中R 2,R 3和R 4是C 1 -C 6烷基或苄基。