Water → HCID 66682402, compound

Participants

Reaction Conditions

Reaction Steps

Methyl 5-{3-[(1S)-2-methoxy-1-methylethoxy]-5-[5-(1,3-thiazol-2-yl)-1H-pyrrol-2-yl]phenoxyl}pyrazine-2-carboxylate (423 mg, 0.907 mmol) synthesized in Example (62c) was dissolved in methanol (10 mL), and water (2 mL) and lithium hydroxide monohydrate (76.2 mg, 1.82 mmol) were added, followed by stirring at 50° C. for 1 hour under nitrogen atmosphere. To the reaction solution, water (30 mL) was added, and extraction was carried out twice with ethyl acetate (30 mL), followed by drying over sodium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: dichloromethane/methanol=0%-10%) to afford the desired compound (269 mg, yield 66%) as a pale yellow solid.

Provenance & Evidence