反应详情

To a dichloromethane (5 ml) solution of the [6-[(4-chlorophenylsulfonyl)(2,5-difluorophenyl)methyl]pyridin-3-yl]carboxylic acid (80 mg, 0.19 mmol) obtained in Example 50 were added triethylamine (32 μl, 0.23 mmol), 4-dimethylaminopyridine (12 mg, 0.095 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (44 mg, 0.23 mmol) and aminomethylcyclohexane (30 μl, 0.23 mmol). The resulting mixture was stirred at room temperature for 4.5 hours. The reaction mixture was diluted with dichloromethane and washed sequentially with water, a saturated aqueous solution of sodium bicarbonate and brine. The organic layer thus obtained was dried over magnesium sulfate and concentrated under reduced pressure. The residue thus obtained was subjected to flash silica gel column chromatography. The fraction obtained from the hexane:ethyl acetate=3:1 eluate was concentrated under reduced pressure to give the title compound (58 mg, 0.11 mmol, 59%) as a white powder.

1. washwashed sequentially with water
2. customThe organic layer thus obtained
3. dry with materialwas dried over magnesium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe residue thus obtained
6. concentrationethyl acetate=3:1 eluate was concentrated under reduced pressure