反应详情

温度

75 °C

3-[4-(5-Chloropyridin-3-yl)-3-[(trans-4-methylcyclohexyl)methyl]-2-(1-phenylethenyl)-3H-imidazo[4,5-c]pyridin-6-yl]-1,2,4-oxadiazol-5(4H)-one (Example 9.1, 130 mg, 0.247 mmol) was taken up in methanol (1.644 mL) at room temperature, and sodium methoxide (1.2 mL of 25 wt % in methanol, 5.25 mmol) was added. The mixture was capped and heated to 75° C. for 24 hours. The mixture was cooled to room temperature, quenched with saturated aqueous ammonium chloride, and extracted with ethyl acetate. The organic layer was dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The resulting residue was purified via automated reverse phase HPLC (methanol/water+0.1% TFA modifier) to afford 3-{4-(5-chloropyridin-3-yl)-2-(2-methoxy-1-phenylethyl)-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-c]pyridin-6-yl}-1,2,4-oxadiazol-5(4H)-one (TFA salt) as a white solid. MS ESI calcd. for C30H31ClN6O3 [M+H]+ 559. found 559. 1H NMR (500 MHz, DMSO-d6) δ 12.91 (s, 1H), 8.83 (s, 2H), 8.40 (s, 1H), 8.32 (s, 1H), 7.58-7.48 (m, 2H), 7.31-7.25 (m, 3H), 4.80-4.75 (m, 1H), 4.21-4.15 (m, 1H), 3.90-3.80 (m, 3H), 3.25 (s, 3H), 1.42-1.35 (m, 1H), 1.29-1.20 (m, 2H), 1.04-0.94 (m, 1H), 0.75-0.64 (m, 5H), 0.40-0.29 (m, 4H).

1. customThe mixture was capped
2. temperatureThe mixture was cooled to room temperature
3. customquenched with saturated aqueous ammonium chloride
4. extractionextracted with ethyl acetate
5. dry with materialThe organic layer was dried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure
8. customThe resulting residue was purified via automated reverse phase HPLC (methanol/water+0.1% TFA modifier)