Process for preparing 2-(2-pyridylmethyl)-sulfinyl-1H-benzimidazoles and the intermediate compounds used therein
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United States of America Patent
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Issued Date -
Aug 19, 2010
app pub date -
May 15, 2008
filing date -
May 18, 2007
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Abandoned
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Abstract
The present invention relates to a process for preparing 2-(2-pyridylmethyl)sulphinyl-1H-benzimidazoles that are proton pump inhibitors, using as intermediates 2-benzimidazolyl-sulphinic acid derivatives. The present invention also relates to the intermediate compounds, their use and a process for the preparation thereof. These novel intermediate compounds are 2-benzimidazolylsulphinicacid esters that are obtained from their corresponding alkaline salts, which are in turn obtained by oxidation of substituted 2-mercaptobenzimidazoles. The intermediate compounds of the invention are converted into 2-(2-pyridylmethyl)sulphinyl-1H-benzimidazoles by reaction with substituted 2-methylpyridines.
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