Process for the preparation of esomeprazole magnesium dihydrate

Details Process for the preparation of esomeprazole magnesium dihydrate Process for the preparation of esomeprazole magnesium dihydrate

C - Chemistry, Metallurgy

07

D

C07D 401/12 (2006.01) A61K 31/4427 (2006.01) A61P 1/04 (2006.01)

Patent

CA 2678702

A process for preparing Form A of (S) -5-methoxy-2- [ [ (4-methoxy-3, 5-dimethyl-2-pyridinyl) - methyl] sulf inyl] -1 H-benzimidazole magnesium dihydrate, processes for preparing various intermediates useful in the preparation of Form A of (S) -5-methoxy-2- [ [ (4-methoxy-3, 5-dimethyl-2-pyridinyl) -methyl] sulf inyl] -1 H-benzimidazole magnesium dihydrate and a novel polymorphic Form II of 5-methoxy-2- [ [ (4-methoxy-3, 5-dimethyl-2-pyridinyl) -methyl] thio] -1 H-benzimidazole

La présente invention se rapporte à un procédé pour la préparation de la forme A de (S)-5-méthoxy-2-[[(4-méthoxy-3,5-diméthyl-2-pyridinyl)- méthyl]sulfinyl]-1 H-benzimidazole magnésium dihydraté, ainsi qu'à des procédés pour la préparation de divers intermédiaires utiles dans la préparation de la forme A de (S)-5-méthoxy-2-[[(4-méthoxy-3,5- diméthyl-2-pyridinyl)-méthyl]sulfinyl]-1 H-benzimidazole magnésium dihydraté et une nouvelle forme polymorphe II de 5-méthoxy-2-[[(4-méthoxy-3,5-diméthyl-2-pyridinyl)-méthyl]thio]-1 H- benzimidazole.

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