Method for manufacture of escitalopram
    23.
    发明授权
    Method for manufacture of escitalopram 有权
    依他普仑的制备方法

    公开(公告)号:US08022232B2

    公开(公告)日:2011-09-20

    申请号:US12202522

    申请日:2008-09-02

    IPC分类号: A61K31/34 C07D307/00

    摘要: This patent discloses a method for resolution of 4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile as a racemic or non-racemic enantiomer mixture into its isolated enantiomers, said method comprising the step of fractionally crystallizing 4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile as a salt with the (+)-(S,S)- or (−)-(R,R)-enantiomer of O,O′-di-p-toluoyl-tartaric acid in a solvent system comprising 1-propanol, ethanol or acetonitrile.

    摘要翻译: 该专利公开了将4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟基甲基) - 苄腈作为外消旋或非外消旋对映异构体混合物分离成其分离的方法 所述方法包括将4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟甲基) - 苄腈与(+) - ( S,S) - 或( - ) - (R,R) - 对映体在包含1-丙醇,乙醇或乙腈的溶剂体系中的O,O-二对甲苯酰 - 酒石酸。