4-((4-((((3-Isopropyl-2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)carbonyl)amino)methyl)piperidin-1-yl)methyl)tetrahydro-2H-pyran-4-carboxylic acid → 4-{[4-({[(3-isopropyl-2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)carbonyl]amino}methyl)piperidin-1-yl]methyl}tetrahydro-2H-pyran-4-carboxylic acid benzenesulfonate

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Reaction Steps

To a suspension of 4-{[4-({[(3-Isopropyl-2-oxo-2,3-dihydro′-1H-benzimidazol-1-yl) carbonyl]amino}methyl)piperidin-1-yl]methyl}tetrahydro-2H-pyran-4-carboxylic acid (750 mg, Step 13) in CH3CN (5 mL), a solution of benzenesulfonic acid monohydrate (288 mg) in CH3CN (5 mL) was added at room temperature. The resulting mixture was stirred at room temperature for 2 days and it was concentrated. The residue was dried to afford 909 mg (90%) of the titled compound as a solid.

Provenance & Evidence