申请人:CENTRO GENESIS PARA LA INVESTIGACION, S.L.
公开号:EP0484265A1
公开(公告)日:1992-05-06
The process starts by reacting 2,3,5 trimethylpyridine with hydrogen peroxide in the presence of catalysts, giving new reactive ionic species allowing the number of required steps to be substantially reduced. In the final important step, oxidation to omeprazol, there are used new salts of 5-methoxy-2-((3,5-dimethyl-4-methoxy-2-pyridine)methylthio)-1H-benzimidazole which, as the oxidation evolves, precipitate the omeprazol. The new oxidation method avoids superoxidations, provide for faster oxidation, high purity and yields of over 90%.
该过程首先是通过在催化剂存在下,将2,3,5-三甲基吡啶与过氧化氢反应,产生新的具有反应性的离子物种,从而大大减少所需步骤的数量。在最后一个重要步骤中,氧化成奥美拉唑时,使用了5-甲氧基-2-((3,5-二甲基-4-甲氧基-2-吡啶基)甲硫基)-1H-苯并咪唑的新盐,随着氧化的进行,沉淀出奥美拉唑。这种新的氧化方法避免了超氧化反应,实现了更快的氧化速度,高纯度和超过90%的产率。