Hydrochloric Acid → HCID 72303758, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 343 mg of (3RS,4RS)-3-(2,4-dichlorophenyl)-N-(2-hydrazino-2-oxoethoxy)-2-{(1SR,2SR)-2-[(methylsulfonyl)amino]cyclohexyl}-1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxamide in 6.9 ml of THF was cooled to 0° C., and 116 mg of 1,1′-carbonyldiimidazole and 0.12 ml of triethylamine were added thereto, followed by stirring at 0° C. for 2 hours, and then stirring at room temperature overnight. 0.1 M hydrochloric acid was added thereto, followed by extraction with ethyl acetate. The solution was washed with a saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was recrystallized from ethyl acetate to obtain 221 mg of (3RS,4RS)-3-(2,4-dichlorophenyl)-2-{(1SR,2SR)-2-[(methylsulfonyl)amino]cyclohexyl}-1-oxo-N-[(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)methoxy]-1,2,3,4-tetrahydroisoquinoline-4-carboxamide as a white powder crystal.

Provenance & Evidence