反应详情

N-Benzyl-N′-cyclohexylcarbodiimide polymer bound (624 mg of 1.3 mmol/g, 0.480 mmol) was added in one portion to a stirred solution of methoxyacetic acid (37 μL, 0.480 mmol) and the amine of Example 78 (80 mg, 0.240 mmol) in dichloromethane (5 ml) at room temperature under nitrogen. The reaction was stirred for 1 hour and the polymer bound reagent was removed by filtration. The filtrate was concentrated under reduced pressure and the crude product was purified by flash column chromatography on silica gel eluting with dichloromethane:methanol:ammonia (95:4:1, by volume) to provide the title compound (45 mg) as a white foam.

1. customat room temperature
2. customwas removed by filtration
3. concentrationThe filtrate was concentrated under reduced pressure
4. customthe crude product was purified by flash column chromatography on silica gel eluting with dichloromethane:methanol:ammonia (95:4:1, by volume)