Pyridine → HCID 59478400, compound

Participants

Reaction Steps

To a mixture of 538 mg of (3RS,4RS)-2-{(1SR,2SR)-2-aminocyclohexyl}-N-(benzyloxy)-3-(2,4-dichlorophenyl)-1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxamide and 2.5 ml of pyridine was added 0.15 ml of methanesulfonyl chloride, followed by stifling at room temperature for 6 hours. Ethyl acetate and water were added thereto to carry out a liquid separation operation, and the organic layer was washed with a 1 M aqueous hydrochloric acid solution and a saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, and then evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: chloroform) and then recrystallized from ethyl acetate-hexane to obtain 206 mg of (3RS,4RS)-N-(benzyloxy)-3-(2,4-dichlorophenyl)-2-{(1SR,2SR)-2-[(methylsulfonyl)amino] cyclohexyl}-1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxamide as a colorless powdered crystal.

Provenance & Evidence