反应详情

(S)-Phenylmethyl-[1-(hydroxymethyl)-2-oxo-2-(1H-pyrrol-1-ylamino)ethyl]carbamate (4.90 g) was dissolved in 100 ml of methanol over 5% Pd/C (500 mg). The solution was hydrogenated at atmospheric pressure and room temperature until absorption of 80% of the theoretical amount of hydrogen. The catalyst was removed by filtration and the filtrate was evaporated to dryness. The residue was purified by flash column chromatography (silica gel, ethyl acetate/methanol 4:1) to afford the desired product as a powder. Recrystallization from ethyl acetate/methanol/hexane gave the product as needles (1.37 g), m.p. 135°-137° C.

1. customThe solution was hydrogenated at atmospheric pressure and room temperature until absorption of 80% of the theoretical amount of hydrogen
2. customThe catalyst was removed by filtration
3. customthe filtrate was evaporated to dryness
4. customThe residue was purified by flash column chromatography (silica gel, ethyl acetate/methanol 4:1)