Synthetic procedure for 5-methoxy-2-[(4-methoxy-3,5-dimethyl-2-pyridinyl)-methylthio]-IH-benzimidazole hydrochloride and its conversion to omeprazole
申请人:Wockhardt Europe Limited
公开号:US06245913B1
公开(公告)日:2001-06-12
The present invention relates to an efficient process for the preparation of 5-methoxy-2-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methylthio]-1-H-benzimidazole hydrochloride starting from 3,5-Lutidine and its conversion to Omeprazole (5-methoxy-2-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methylsulfinyl]-1H-benzimidazole) by selective oxidation with hydrogen peroxide.
本发明涉及一种高效的工艺,用于从3,5-吡啶甲醚开始制备5-甲氧基-2-[(4-甲氧基-3,5-二甲基-2-吡啶基)甲硫基]-1H-苯并咪唑盐酸盐,并通过与过氧化氢的选择性氧化将其转化为奥美拉唑(5-甲氧基-2-[(4-甲氧基-3,5-二甲基-2-吡啶基)甲砜基]-1H-苯并咪唑)。