反应详情

To a stirred mixture of 3-[(dipropylamino)-carbonyl]-5-methylbenzoic acid (IX, 150 mg, 0.570 mmol), (2R,3S)-3-amino-4-[4-(benzyloxy)phenyl]-1-[(3-methoxybenzyl)amino]-2-butanol hydrochloride (VIII, 274 mg, 0.571 mmol), N,N-diisopropylethylamine (400 microliter, 2.28 mmol), and HOBt (116 mg, 0.857 mmol) in dichloromethane (10 mL) is added EDC (165 mg, 0.857 mmol). The resulting mixture is stirred at 20–25 degrees C. for 16 hours. The reaction mixture is partitioned between dichloromethane and water. The aqueous phase is separated and extracted with dichloromethane (3×15 mL). The combined organic phases are washed with water, dried (magnesium sulfate), and concentrated under reduced pressure. Purification by flash column chromatography (silica; dichloromethane/methanol/ammonium hydroxide, 97/3/0.05) gives N1-{(1S,2R)-1-[4-(benzyloxy)benzyl]-2-hydroxy-3-[(3-methoxybenzyl)amino]propyl}-5-methyl-N3,N3-dipropylisophthalamide, ESI-MS (m/z) [M+H]+=652.

1. customThe reaction mixture is partitioned between dichloromethane and water
2. customThe aqueous phase is separated
3. extractionextracted with dichloromethane (3×15 mL)
4. washThe combined organic phases are washed with water
5. dry with materialdried (magnesium sulfate)
6. concentrationconcentrated under reduced pressure
7. customPurification by flash column chromatography (silica; dichloromethane/methanol/ammonium hydroxide, 97/3/0.05)