反应详情

A solution of hydrochloric acid (1.0 mL, 4.0 M in 1,4-dioxane) was added to a solution of (2R)-2-methyl-2-(methylsulfonyl)-4-[2-oxo-4-(2-phenylethyl)pyridin-1(2H)-yl]-N-(tetrahydro-2H-pyran-2-yloxy)butanamide (14 mg, 0.029 mmol) in 5:1 dichloromethane-methanol (1.2 mL) at 0° C. After 2 h, the reaction was concentrated under reduced pressure. The resulting residue was triturated with 1:1 pentane-dichloromethane, filtered, washed with pentane, and dried under reduced pressure to provide a light pink solid (8 mg, 70%). MS (APCI) m/z 393.3 (M+1). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.51 (s, 3 H) 2.00-2.14 (m, 1 H) 2.24-2.36 (m, 1 H) 2.63-2.74 (m, 2 H) 2.78-2.88 (m, 2 H) 3.06 (s, 3 H) 3.58-3.73 (m, 1 H) 3.94-4.08 (m, 1 H) 6.16-6.26 (m, 2 H) 7.11-7.32 (m, 5 H) 7.55 (d, J=7.41 Hz, 1 H) 11.14 (br s, 1 H).

1. concentrationthe reaction was concentrated under reduced pressure
2. customThe resulting residue was triturated with 1:1 pentane-dichloromethane
3. filtrationfiltered
4. washwashed with pentane
5. customdried under reduced pressure