反应详情

To a solution of 1-(4-methoxybenzyl)-3-methyl-7-((5-methylpyridin-2-yl)methyl)-8-(3-(trifluoromethoxy)benzyl)-1H-purine-2,6(3H,7H)-dione (120 mg, 0.212 mmol) in DCM (1.4 mL) was added triflic acid (0.7 mL) and TFA (0.7 mL). The reaction was stirred at room temperature overnight. The mixture was partitioned between ethyl acetate and water. The organic phase was washed with saturated NaHCO3 and brine, dried over sodium sulfate, filtered and concentrated to give crude product, which was purified by silica gel chromatography eluting with petroleum/ethyl acetate (10:1 to 1:1) to give 3-methyl-7-((5-methylpyridin-2-yl)methyl)-8-(3-(trifluoromethoxy)benzyl)-1H-purine-2,6(3H,7H)-dione (60 mg, 63.5% yield) as white solid. LCMS MH+ 446.

1. customThe mixture was partitioned between ethyl acetate and water
2. washThe organic phase was washed with saturated NaHCO3 and brine
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customto give crude product, which
7. customwas purified by silica gel chromatography
8. washeluting with petroleum/ethyl acetate (10:1 to 1:1)