Process for obtaining enantiomers of Cizolirtine
    5.
    发明申请
    Process for obtaining enantiomers of Cizolirtine 审中-公开
    获得Cizolirtine对映异构体的方法

    公开(公告)号:US20060142589A1

    公开(公告)日:2006-06-29

    申请号:US11041667

    申请日:2005-01-24

    IPC分类号: C07D231/12

    CPC分类号: C07D231/12

    摘要: A process is described for the preparation of a precursor alcohol of Cizolirtine, (±)-2-[phenyl(1-methyl-1H-pyrazol-5-yl)methoxy]-N,N-dimethylethanamine and its enantiomers. The process involves the asymmetric reduction of a prochiral ketone in the presence of a chiral ruthenium (II) catalyst system including at least a bidentate phosphorous-containing ligand and a diamine ligand to yield chiral alcohols. The chiral alcohols are further O-alkylated to yield corresponding pharmaceutically active ethanamines.

    摘要翻译: 描述了制备Cizolirtine(±)-2- [苯基(1-甲基-1H-吡唑-5-基)甲氧基] -N,N-二甲基乙胺及其对映异构体的前体醇的方法。 该方法包括在手性钌(II)催化剂体系的存在下不对称还原前手性酮,所述手性钌(II)催化剂体系至少包含二齿含磷配位体和二胺配体以产生手性醇。 手性醇进一步O-烷基化以产生相应的药学活性乙胺。