Sodium hydride → HCID 66636923, compound

Participants

Reaction Steps

5 ml of toluene and 41 mg of 60% sodium hydride were added to 180 mg of N′-(acetoacetyloxy)-2-{[7-(cyclohexylamino)-1-cyclopentyl-6-fluoro-4-oxo-1,4-dihydroquinolin-3-yl]oxy}ethanimidamide, followed by heating under reflux for 24 hours. The solvent was evaporated under a reduced pressure, and dilute hydrochloric acid was added to the resulting residue, followed by extraction with ethyl acetate and washing with water and aqueous saturated sodium chloride. After drying over anhydrous sodium sulfate, the solvent was evaporated under a reduced pressure, and the resulting residue was purified by silica gel column chromatography to obtain 10 mg of 7-(cyclohexylamino)-1-cyclopentyl-6-fluoro-3-[(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)methoxy]quinolin-4(1H)-one (Example 64) and 30 mg of 7-(cyclohexylamino)-1-cyclopentyl-6-fluoro-3-{[5-(2-oxopropyl)-1,2,4-oxadiazol-3-yl]methoxy}quinolin-4(1H)-one (Example 65).

Provenance & Evidence