反应详情

Hydrochloric acid (4.0 M in 1,4-dioxane, 1.7 mL, 6.63 mmol) was added to a solution of (2R)-4-{5-fluoro-2-oxo-4-[4-(2H-tetrazol-2-yl)phenyl]pyridin-1(2H)-yl}-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide (500 mg, 0.94 mmol) in dichloromethane:methanol (5:1, 6 mL) at room temperature. The reaction was stirred for 1 h then was concentrated under reduced pressure affording a residue, which was triturated in diethyl ether:pentane (1:1) overnight. The solid was collected via filtration and dried under reduced pressure to afford the title compound as a solid (340 mg, 76%). MS (LCMS) m/z 451.0 (M+1). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.56 (s, 3 H) 2.09-2.21 (m, 1 H) 2.42-2.45 (m, 1 H) 3.09 (s, 3 H) 3.78 (m, J=11.80, 11.80, 5.20 Hz, 1 H) 3.97-4.10 (m, 1 H) 6.63 (d, J=7.61 Hz, 1 H) 7.84 (dd, J=8.68, 1.66 Hz, 2 H) 8.00-8.15 (m, 3 H) 10.16 (s, 1 H) 11.08 (br. s., 1 H).

1. concentrationthen was concentrated under reduced pressure
2. customaffording a residue, which
3. customwas triturated in diethyl ether:pentane (1:1) overnight
4. filtrationThe solid was collected via filtration
5. customdried under reduced pressure