[EN] METHOD FOR MANUFACTURE OF ESCITALOPRAM<br/>[FR] PROCEDE DE FABRICATION D'ESCITALOPRAM
申请人:LUNDBECK & CO AS H
公开号:WO2009033488A1
公开(公告)日:2009-03-19
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 crystallising 4-[4-(dimethylamino)-1-(4´-fluoro-phenyl)-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.
该专利揭示了一种将4-[4-(二甲氨基)-1-(4´-氟苯基)-1-羟基丁基]-3-(羟甲基)-苯甲腈作为盐与O,O'-二对甲苯酰酒石酸的(+)-(S,S)-或(-)-(R,R)-对映体在包括1-丙醇、乙醇或乙腈的溶剂体系中分离成其独立对映体的方法,该方法包括分级结晶4-[4-(二甲氨基)-1-(4´-氟苯基)-1-羟基丁基]-3-(羟甲基)-苯甲腈。