[EN] A PROCESS FOR PREPARATION OF ENANTIOMERICALLY PURE ESOMEPRAZOLE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ÉSOMÉPRAZOLE PUR SUR LE PLAN ÉNANTIOMÈRE
申请人:HETERO DRUGS LTD
公开号:WO2009040825A1
公开(公告)日:2009-04-02
The present invention provides an improved and commercially viable process for preparation of substantially enantiomerically pure esomeprazole in neutral form or as a pharmaceutically acceptable salt or as its solvates including hydrates. Thus, for example, a compound containing a mixture of 1-(S)-camphorsulfonyl-5-methoxy-2-[(3,5-dimethyl-4-methoxy-2-pyridyl)methyl-(S)-sulfinyl]-1 H-benzimidazole and 1-(S)-camphorsulfonyl-6-methoxy-2-[(3,5- dimethyl-4-methoxy-2-pyridyl)methyl-(S)-sulfinyl]-1 H-benzimidazole is hydrolyzed with barium hydroxide, isolated the resulting esomeprazole barium salt followed by neutralization with an acid to yield substantially enantiomerically pure esomeprazole in neutral form and then converted into its pharmaceutically acceptable salts.
本发明提供了一种改进的商业化制备方法,用于制备中性形式或其药学可接受盐或其溶剂包括水合物的近乎对映纯的埃索美拉唑。例如,将含有1-(S)-蒎磺酰基-5-甲氧基-2- [(3,5-二甲基-4-甲氧基-2-吡啶基)甲基-(S)-亚砜基] -1H-苯并咪唑和1-(S)-蒎磺酰基-6-甲氧基-2- [(3,5-二甲基-4-甲氧基-2-吡啶基)甲基-(S)-亚砜基] -1H-苯并咪唑的混合物通过氢氧化钡水解,隔离得到所得的埃索美拉唑钡盐,然后通过酸中和得到近乎对映纯的中性形式的埃索美拉唑,然后转化为其药学可接受的盐。