Sodium Hydroxide → HCID 67351907, compound

Participants

Reaction Steps

(S)-5-[3-(5-Cyano-1,3-oxazol-2-yl)phenyl]-9-methylthio-1,2,3,3a,4,5-hexahydro-5,8,10,10b-tetraazabenzo[e]azulen-6-one (140 mg, 0.334 mmol) obtained in Step 3 of Example 125 was dissolved in ethanol (5 mL), and the mixture was stirred at room temperature for 2 hours after adding a 2 mol/L aqueous sodium hydroxide solution (1.67 mL, 3.34 mmol). The mixture was diluted with ethyl acetate, and washed with water and saturated brine. The organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting residue was then purified by silica gel column chromatography to give (S)-2-[3-(9-methylthio-6-oxo-2,3,3a,4-tetrahydro-1H,6H-5,8,10,10b-tetraazabenzo[e]azulen-5-yl)phenyl]-1,3-oxazole-5-carboxamide (50.3 mg, 34%).

Provenance & Evidence