Pyridine → HCID 178476483, compound

Participants

Reaction Steps

Trans-5-amino-3-[4-(dimethylamino)cyclohexylcarbonylamino]-N-(5-chloropyridin-2-yl)benzofuran-2-carboxamide (100 mg) obtained in Example 180 is dissolved in dichloromethane (8 ml), and thereto are added acetoxy acetylchloride (36 mg) and pyridine (36 μl) under ice-cooling, and the mixture is stirred at room temperature for 17 hours. To the reaction solution is poured a saturated aqueous sodium hydrogen carbonate solution, and the mixture is extracted with chloroform. 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: chloroform, then chloroform/methanol=50/1) to give trans-5-acetoxyacetylamino-3-[4-(dimethylamino)cyclohexylcarbonylamino]-N-(5-chloropyridin-2-yl)benzofuran-2-carboxamide (110 mg). A portion of this product is dissolved in ethanol, and treated with 4N hydrogen chloride in ethyl acetate to give the title compound (16 mg).

Provenance & Evidence