反应详情

After dissolving N-cyclopropylmethyl-N-[7-(2-methoxy-4,6-dimethylphenyl)-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-3-yl]amine (100 mg) in methanol (10 mL), ((1-ethoxycyclopropyl)oxy)trimethylsilane (60 μL), acetic acid (298 μL) and sodium cyanoborohydride (171 mg) were added and the mixture was heated to reflux for 6 hours. After cooling the reaction mixture to room temperature, saturated aqueous sodium hydrogencarbonate was added, extraction was performed with ethyl acetate, and the organic layer was washed with brine. After drying the obtained organic layer over anhydrous magnesium sulfate and filtering it, the solvent was concentrated under reduced pressure, the residue was purified by silica gel column chromatography, and the title compound (74 mg) was obtained from the n-hexane:ethyl acetate (10:1) fraction as a yellow oil.

1. additionwere added
2. temperaturethe mixture was heated
3. temperatureto reflux for 6 hours
4. extractionextraction
5. washthe organic layer was washed with brine
6. dry with materialAfter drying the obtained organic layer over anhydrous magnesium sulfate
7. filtrationfiltering it
8. concentrationthe solvent was concentrated under reduced pressure
9. customthe residue was purified by silica gel column chromatography