Water → 3-Fluoro-4-{3-[(1S)-2-methoxy-1-methylethoxy]-5-[5-(1,3-thiazol-2-yl)-1H-pyrrol-2-yl]phenoxy}benzoic acid

Participants

Reaction Conditions

Reaction Steps

Methyl 3-fluoro-4-{3-[(1S)-2-methoxy-1-methylethoxy]-5-[5-(1,3-thiazol-2-yl)-1H-pyrrol-2-yl]phenoxy}benzoate (611 mg, 1.42 mmol) synthesized in Example 43 was dissolved in methanol (18 mL), and water (3 mL) and lithium hydroxide monohydrate (298 mg, 7.10 mmol) were added, followed by stirring at 60° C. for 4 hours under nitrogen atmosphere. To the reaction solution, water (50 mL) was added, and extraction was carried out twice with ethyl acetate (40 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: ethyl acetate/hexane=30%-75%) to afford the desired compound (519 mg, yield 88%) as a white solid.

Provenance & Evidence