反应详情

Benzoyl isothiocyanate (19.0 mL) was added to a solution containing ((2S,3R,45)-4-amino-4-(2-fluorophenyl)-2-(trifluoromethyl)tetrahydrofuran-3-yl)methanol (28.72 g) in DCM (150 mL), and the mixture was stirred at RT for 18 h. Sodium bicarbonate (sat., aq., 200 mL) was then added, the mixture extracted with EtOAc (3×300 mL), dried over MgSO4 and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (5% to 30% EtOAc in hexanes) to obtain the title compound (37.07 g). 1H-NMR (400 MHz, CDCl3) δ (ppm): 3.22 (dd, J=8.1, 4.5 Hz, 1H), 3.31 (td, J=8.0, 3.0 Hz, 1H), 3.94-4.07 (m, 1H), 4.31-4.46 (m, 1H), 4.53 (d, J=9.9 Hz, 1H), 4.83 (d, J=9.9 Hz, 1H), 6.97-7.14 (m, 1H), 7.22 (td, J=7.7, 1.3 Hz, 1H), 7.31-7.45 (m, 1H), 7.49-7.61 (m, 2H), 7.61-7.70 (m, 1H), 7.75 (td, J=8.1, 1.5 Hz, 1H), 7.79-7.93 (m, 2H), 8.90 (s, 1H), 11.85 (s, 1H)

1. extractionthe mixture extracted with EtOAc (3×300 mL)
2. dry with materialdried over MgSO4
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified by silica gel column chromatography (5% to 30% EtOAc in hexanes)