Sodium Thiosulfate → HCID 178461199, compound

Participants

Reaction Steps

To a room temperature slurry of 3-{4-(5-chloropyridin-3-yl)-2-[(2-fluorophenyl)(hydroxy)methyl]-3-[(trans-4-methylcyclohexyl)methyl]-3H-imidazo[4,5-d]pyridin-6-yl}-1,2,4-oxadiazol-5(4H)-one (Example 7.4 in Table 7, 150 mg, 0.273 mmol) in dichloromethane (4 mL) was added 1,1,1-triacetoxy-1,1-dihydro-1,2-benziodoxol-3(1H)-one (127 mg, 0.301 mmol). The mixture was stirred at room temperature for 1 hour during which time it became a homogeneous solution. Saturated aqueous sodium thiosulfate was added, and the resulting mixture was extracted with ethyl acetate (2×). The combined organic layers were dried over sodium sulfate, filtered, and concentrated. Purification via mass guided reverse phase HPLC (acetonitrile/water+0.1% TFA modifier) afforded 3-{4-(5-chloropyridin-3-yl)-2-[(2-fluorophenyl)carbonyl]-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 C28H24ClFN6O3 [M+H]+ 547. found 547. 1H NMR (500 MHz, DMSO-d6) δ 13.01 (s, 1H), 8.96 (s, 1H), 8.89 (s, 1H), 8.51 (s, 1H), 8.45 (s, 1H), 7.85-7.87 (m, 2H), 7.45-7.41 (m, 2H), 4.25 (d, J=6.5 Hz, 2H), 1.43-1.40 (m, 2H), 1.15-1.02 (m, 2H), 0.86-0.80 (m, 2H), 0.73-0.65 (m, 5H), 0.55-0.50 (m, 2H).

Provenance & Evidence