Hydrochloric Acid → HCID 59281217, compound

Participants

Reaction Steps

[(2R,4R,5S)-5-Amino-2-benzyloxymethyl-5-(5-bromo-2-fluorophenyl)tetrahydropyran-4-yl]methanol (2.22 g) was dissolved in dichloromethane (30 ml), and benzoyl isothiocyanate (776 μl) was added. The mixture was stirred at room temperature for five hours, and then the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography to obtain an intermediate. The resulting intermediate was dissolved in methanol (50 ml), and concentrated hydrochloric acid (2 ml) was added. The mixture was heated under reflux for six hours and then cooled to room temperature. The solvent was evaporated under reduced pressure. Methanol (30 ml) and DBU (2 ml) were added to the residue, followed by heating under reflux for three hours. The reaction solution was cooled to room temperature, and the solvent was evaporated under reduced pressure. The residue was purified by NH-silica gel column chromatography to obtain the title compound (2.30 g).

Provenance & Evidence