反应详情

To a solution of 4-(5-chloropyridin-3-yl)-3-[(trans-4-methylcyclohexyl)methyl]-2-[(3R)-3-phenylmorpholin-4-yl]-3H-imidazo[4,5-c]pyridine-6-carbohydrazide (4.5 g, 8.03 mmol) and 1,1′-carbonyldiimidazole (1.43 g, 8.84 mmol) dissolved in acetonitrile (53.6 mL) was added 1,8-diazabicyclo[5.4.0]undec-7-ene (4.8 mL, 32.1 mmol). The reaction mixture was stirred at room temperature for 1 hour. The reaction was washed with water and extracted with dichloromethane. The organic layer was dried over sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (0-10% methanol/dichloromethane, and then 0-100% ethyl acetate/hexanes, linear gradient) to afford 5-{4-(5-chloropyridin-3-yl)-3-[(trans-4-methylcyclohexyl)methyl]-2-[(3R)-3-phenylmorpholin-4-yl]-3H-imidazo[4,5-c]pyridin-6-yl}-1,3,4-oxadiazol-2(3H)-one. MS ESI calc'd. for O31H32ClN7O3 [M+H]+ 586. found 586. 1H NMR (500 MHz, DMSO-d6) δ 12.62 (s, 1H), 8.79 (d, J=8.3, 2H), 8.27 (s, 1H), 7.87 (s, 1H), 7.42 (t, J=10.0, 2H), 7.25 (t, J=7.2, 2H), 7.22-7.17 (m, 1H), 4.76 (s, 1H), 4.05-3.81 (m, 4H), 3.80-3.69 (m, 1H), 3.67-3.47 (m, 2H), 3.27 (s, 1H), 1.37 (t, J=13.0, 2H), 1.03 (broad, 1H), 0.83 (broad, 1H), 0.68 (d, J=6.2, 4H), 0.64-0.52 (m, 2H), 0.51-0.27 (m, 3H).

1. washThe reaction was washed with water
2. extractionextracted with dichloromethane
3. dry with materialThe organic layer was dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by silica gel chromatography (0-10% methanol/dichloromethane