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

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Reaction Steps

3-Fluoro-4-{3-[(1S)-2-methoxy-1-methylethoxy]-5-[5-(1,3-thiazol-2-yl)-1H-pyrrol-2-yl]phenoxy}benzoic acid (40.0 mg, 0.163 mmol) synthesized in Example (44a) was dissolved in dichloromethane (5 mL), and 28% aqueous ammonia solution (0.50 mL), WSCI.HCl (19.6 mg, 0.102 mmol) and HOBt.H2O (13.1 mg, 0.086 mmol) were added, followed by stirring at room temperature for 7 hours under nitrogen atmosphere. To the reaction solution, water (10 mL) was added, and extraction was carried out with ethyl acetate (20 mL). The organic layer was washed with saturated brine, and subsequently dried 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=0%-75%) to afford the desired compound (11.3 mg, yield 28%) as a white solid.

Provenance & Evidence