Methanesulfonic Acid → HCID 58065526, compound

Participants

Reaction Steps

N-(2-Hydroxy-2-methylpropyl)-5-{3-[(1S)-2-methoxy-1-methylethoxy]-5-[4-(methylsulfonyl)phenoxy]phenyl}-1,4-pyrrole-2-carboxamide (307 mg, 0.594 mmol) synthesized in Example (36a) was dissolved in tetrahydrofuran (10 mL), and anhydrous methanesulfonic acid (160 mg, 0.918 mmol) and triethylamine (0.25 mL, 1.79 mmol) were added, followed by stirring at room temperature for 4 days under nitrogen atmosphere. A saturated aqueous sodium hydrogencarbonate solution (10 mL) was added, and the solution was separated with ethyl acetate (20 mL). The organic layer was washed with saturated brine, and subsequently dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: ethyl acetate/hexane=30%-70%) to afford the desired product (187 mg, yield 63%) as a white solid.

Provenance & Evidence