1,1'-Carbonyldiimidazole → HCID 86645204, compound

Participants

Reaction Steps

To a solution of 330 mg of 3-{[({[(3RS,4RS)-3-(2,4-dichlorophenyl)-2-{(1SR,2SR)-2-[(methylsulfonyl)amino]cyclohexyl}-1-oxo-1,2,3,4-tetrahydroisoquinolin-4-yl]carbonyl}amino)oxy]methyl}benzoic acid in 5 ml of DMF was added 122 mg of CDI, followed by stirring at room temperature for 30 minutes. To the reaction solution were added 71 mg of methane sulfonamide and 0.11 ml of DBU, followed by stirring at room temperature for 3 hours. To the reaction solution was added ethyl acetate, followed by washing with 1 M hydrochloric acid and a saturated aqueous sodium chloride solution. The organic layer was dried over anhydrous magnesium sulfate and the solvent was then evaporated. The residue was purified by silica gel column chromatography (eluent: chloroform-methanol) to obtain a crude purified product. This was recrystallized with acetonitrile-water to obtain 273 mg of (3RS,4RS)-3-(2,4-dichlorophenyl)-2-{(1SR,2SR)-2-[(methylsulfonyl)amino]cyclohexyl}-N-({3-[(methylsulfonyl)carbamoyl]benzyl}oxy)-1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxamide as a white crystal.

Provenance & Evidence