反应详情

To a mixture of 3-methyl-5-pentanoylbenzoic acid (IX-LXXVII, 112 mg, 0.589 mmol), (2R,3S)-3-amino-4-(3,5-difluorophenyl)-1-[(3-methoxybenzyl)amino]-2-butanol dihydrochloride (VIII, 239 mg, 0.589 mmol), HOBt (80 mg, 0.589 mmol), and N-methylmorpholine (250 mg, 2.47 mmol) in methylene chloride (3 mL) is added EDC (203 mg, 1.06 mmol). The reaction mixture is stirred overnight and then partitioned between ethyl acetate and water. The organic phase is washed with hydrochloric acid (1 N), saturated sodium bicarbonate, saline, dried (sodium sulfate), filtered, and concentrated under reduced pressure. Purification by flash column chromatography (silica; methylene chloride/methanol, 12/1) gives the title compound, IR (ATR): 3297, 2957, 1687 and 1628 cm−1; APCI-MS (m/z) [M+H]+=539.

1. custompartitioned between ethyl acetate and water
2. washThe organic phase is washed with hydrochloric acid (1 N), saturated sodium bicarbonate, saline
3. dry with materialdried (sodium sulfate)
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customPurification by flash column chromatography (silica; methylene chloride/methanol, 12/1)