反应详情

To a room temperature slurry of 3-{4-(5-chloropyridin-3-yl)-2-[1-(2-fluorophenyl)-1-hydroxyethyl]-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridin-6-yl}-1,2,4-oxadiazol-5(4H)-one (38 mg, 0.067 mmol) in dichloromethane (1.35 mL) was added N,N-diethylaminosulfur trifluoride (0.045 mL, 0.337 mmol). The mixture was stirred for one hour, then quenched with saturated aqueous sodium bicarbonate and extracted with dichloromethane (2×). The combined organic layers were washed with brine (1×), dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The resulting residue was purified via silica gel chromatography (0-100% ethyl acetate/hexanes) to afford 3-{4-(5-chloropyridin-3-yl)-2-[1-fluoro-1-(2-fluorophenyl)ethyl]-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridin-6-yl}-1,2,4-oxadiazol-5(4H)-one as a white solid. MS ESI calcd. for C29H27ClF2N6O2 [M+H]+ 565. found 565. 1H NMR (500 MHz, DMSO-d6) δ 12.97 (s, 1H), 8.86 (s, 1H), 8.82 (s, 1H), 8.45 (s, 1H), 8.38 (s, 1H), 7.68-7.57 (m, 1H), 7.52-7.50 (m, 1H), 7.35-7.32 (m, 1H), 7.26-7.22 (m, 1H), 3.84-3.78 (m, 1H), 2.28 (d, J=23 Hz, 3H), 1.35-1.33 (m, 1H), 1.28-1.18 (m, 2H), 0.93-0.80 (m, 2H), 0.72-0.62 (m, 5H), 0.54-0.43 (m, 2H), 0.33-0.23 (m, 2H).

1. customquenched with saturated aqueous sodium bicarbonate
2. extractionextracted with dichloromethane (2×)
3. washThe combined organic layers were washed with brine (1×)
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe resulting residue was purified via silica gel chromatography (0-100% ethyl acetate/hexanes)