反应详情

To a mixed liquid of 269 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 20 ml of ethanol was added 53 mg of nitrourea, followed by heating under reflux for 1 hour. The reaction solution was cooled and then concentrated, and the residue was purified by silica gel column chromatography (eluent: chloroform-methanol), then crystallized with acetonitrile, and collected by filtration to obtain 155 mg of (3RS,4RS)—N-(benzyloxy)-2-[(1SR,2SR)-2-(carbamoylamino)cyclohexyl]-3-(2,4-dichlorophenyl)-1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxamide as a white crystal.

1. temperatureby heating
2. temperatureunder reflux for 1 hour
3. temperatureThe reaction solution was cooled
4. concentrationconcentrated
5. customthe residue was purified by silica gel column chromatography (eluent: chloroform-methanol)
6. customcrystallized with acetonitrile
7. filtrationcollected by filtration