反应详情

To a 6 ml tetrahydrofuran solution of 114 mg (0.323 mmol) of the compound obtained in Example 44, 49 μl (0.63 mmol) of methanesulfonyl chloride and 90 μl (0.65 mmol) of triethylamine were added, and the mixture was stirred at room temperature for 1 hour. Then, 23 μl (0.3 mmol) of methanesulfonyl chloride was further added to the reaction mixture, and the mixture was stirred at room temperature for 1 hour. Then, an aqueous solution of sodium hydrogen carbonate was added to the reaction mixture, and the mixture was extracted with chloroform. The organic layer was washed with water and a saturated aqueous solution of sodium chloride. After the washed layer was dried over anhydrous sodium sulfate, the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (chloroform/methanol=30/1) to obtain 123 mg (75%) of the captioned compound.

1. stirringthe mixture was stirred at room temperature for 1 hour
2. extractionthe mixture was extracted with chloroform
3. washThe organic layer was washed with water
4. dry with materialAfter the washed layer was dried over anhydrous sodium sulfate
5. distillationthe solvent was distilled off under reduced pressure
6. customThe residue was purified by silica gel column chromatography (chloroform/methanol=30/1)