Benzyl 5-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenyl)-1H-pyrrole-2-carboxylate → 5-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenyl)-1H-pyrrole-2-carboxylic acid

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Reaction Steps

Benzyl 5-(3-[(1S)-2-methoxy-1-methylethoxy]-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenyl)-1H-pyrrole-2-carboxylate (5.08 g, 9.47 mmol) synthesized in Example (76a) was dissolved in ethyl acetate (30 mL), and a 10% palladium carbon catalyst (1.10 g) was added, followed by stirring at room temperature for 3 hours under hydrogen atmosphere. After Celite filtration, the solvent was distilled off under reduced pressure to afford the desired compound as a white solid (4.30 g, yield ˜100%).

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