反应详情

To a suspension of 3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-benzoic acid (A13) (530 mg, 1.82 mmol, 1 equiv) in CH2Cl2 (20 ml) were added HOBT (300 mg, 2.2 mmol, 1.2 equiv) and EDAC.HCl (420 mg, 2.2 mmol, 1.2 equiv). After stirring for 5 min, 3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-benzoic acid hydrochloride (D104) (570 mg, 1.82 mmol, 1 equiv) was added and the resulting mixture was stirred at room temperature for 16 h. The reaction mixture was then diluted with CH2Cl2 (20 ml) washed with saturated aqueous NaHCO3 solution, dried over MgSO4 and concentrated in vacuo to give [(2R,3S)-2-hydroxy-3-({1-[3-(2-oxo-pyrrolidin-1-yl)-5-pentyloxy-phenyl]-methanoyl}-amino)-4-phenyl-butyl]-carbamic acid benzyl ester (D105) (510 mg, 48%) as a white solid.

1. stirringthe resulting mixture was stirred at room temperature for 16 h
2. washwashed with saturated aqueous NaHCO3 solution
3. dry with materialdried over MgSO4
4. concentrationconcentrated in vacuo