反应详情

4-[4-(Benzyloxy)-2-oxopyridin-1(2H)-yl]-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide (536.3 mg, 1.12 mmol) was dissolved in methylene chloride (5 mL) at ambient temperature. To this solution was added HCl (4M in 1,4-dioxane, 8.41 mL, 30 mmol) and the slurry was stirred at RT for 15 minutes. Methanol (1 mL) was added followed by silica gel and the mixture was concentrated to dryness. The crude material purified via silica gel chromatography eluting with methylene chloride/methanol to afford title compound as a solid 117.8 mg. LCMS: (M+1) 395.3 1H NMR (CD3OD) 7.51 (1H, d, J=7.62 Hz), 7.42-7.32 (5H, m), 6.18 (1H, dd, J=7.42, J=2.73), 5.09 (2H, s), 4.21-4.13 (1H, m), 3.85-3.77 (1H, m), 3.08 (3H, s), 2.53-2.45 (1H, m), 2.32-2.25 (1H, m), 1.65 (3H, s) ppm.

1. concentrationthe mixture was concentrated to dryness
2. customThe crude material purified via silica gel chromatography
3. washeluting with methylene chloride/methanol