反应详情

The [6-[(4-chlorophenylsulfonyl)(2,5-difluorophenyl)methyl]pyridin-3-yl]carboxylic acid (90 mg, 0.21 mmol) obtained in Example 50, N-methylpiperazine (0.036 ml, 0.33 mmol), 4-(dimethylamino)pyridine (15 mg, 0.12 mmol) and triethylamine (0.045 ml, 0.32 mmol) were dissolved in dichloromethane (5 ml). To the resulting solution was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (61 mg, 0.32 mmol) at room temperature. The resulting mixture was stirred at room temperature for 14 hours. To the reaction mixture were added N-methylpiperazine (0.036 ml, 0.33 mmol), triethylamine (0.045 ml, 0.32 mmol) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (61 mg, 0.32 mmol). The resulting mixture was stirred at room temperature for 14 hours. The reaction mixture was then concentrated under reduced pressure. The residue thus obtained was subjected to flash silica gel chromatography. The fraction obtained from the dichloromethane:methanol=25:1 eluate was concentrated under reduced pressure to afford the title compound (86 mg, 0.17 mmol, 80%) as a white powder.

1. stirringThe resulting mixture was stirred at room temperature for 14 hours
2. concentrationThe reaction mixture was then concentrated under reduced pressure
3. customThe residue thus obtained
4. concentrationmethanol=25:1 eluate was concentrated under reduced pressure