反应详情

The compound (170 mg, 0.372 mmol) obtained in Example 6a was dissolved in tetrahydrofuran (4 mL), sodium hydride (55%; 20 mg, 0.447 mmol) was added under ice cooling, and the mixture was stirred at room temperature for 15 minutes. Methyl iodide (35 μL, 0.558 mmol) was added, and then the mixture was stirred overnight at room temperature. Water was added to the reaction mixture, the mixture was extracted with ethyl acetate (×3), and the organic layer was washed with saturated sodium chloride solution. The organic layer was dried with anhydrous sodium sulfate, and then the solvent was evaporated under reduced pressure to give the title compound (178 mg; yield, 100%) as a yellow oily substance.

1. stirringthe mixture was stirred overnight at room temperature
2. extractionthe mixture was extracted with ethyl acetate (×3)
3. washthe organic layer was washed with saturated sodium chloride solution
4. dry with materialThe organic layer was dried with anhydrous sodium sulfate
5. customthe solvent was evaporated under reduced pressure