Hydrochloric Acid → HCID 178474845, compound

Participants

Reaction Steps

Trans-3-[4-(N-acetyl-N-methylamino)cyclohexylcarbonylamino]-5-methoxycarbonylmethyl-N-(5-chloropyridin-2-yl)benzofuran-2-carboxamide (2.95 g) obtained in Example 2 is suspended in tetrahydrofuran (65 ml), and thereto is added lithium borohydride (238 mg), and the mixture is stirred at room temperature for 12 hours. To the reaction solution is poured 10% hydrochloric acid under ice-cooling, and the mixture is stirred at room temperature for 15 minutes. Subsequently, the reaction solution is neutralized with a saturated aqueous sodium hydrogen carbonate solution, and extracted with ethyl acetate. The organic layer is washed with a saturated brine, dried over sodium sulfate, and the solvent is evaporated under reduced pressure. The resulting residue is purified by NH-silica gel column chromatography (eluent: ethyl acetate, then chloroform/methanol=40/1), and the resulting residue is suspended in diethyl ether. The precipitates are collected by filtration to give the title compound (2.24 g).

Provenance & Evidence