Sodium Hydroxide → 4-(2-(2-Carboxy-ethyl)-3-{6-[5-(2-difluoromethoxy-benzylcarbamoyl)-2'-fluoro-bi phenyl-3-yloxy]-hexyl}-phenoxy)-butyric acid

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The title compound was prepared by the same method as 4-{2-(2-carboxy-ethyl)-3-[6-(5-dimethylcarbamoyl-3′,4′-difluoro-biphenyl-3-yloxy)-hexyl]-phenoxy}-butyric acid starting from 4-[3-{6-[5-(2-difluoromethoxy-benzylcarbamoyl)-2′-fluoro-bi phenyl-3-yloxy]-hexyl}-2-(2-ethoxycarbonyl-ethyl)-phenoxy]-butyric acid ethyl ester (100 mg, 0.128 mmol) and 1.0 N aqueous NaOH (5 mL) in THF (5 mL) and EtOH (5 mL) to afford 4-(2-(2-carboxy-ethyl)-3-{6-[5-(2-difluoromethoxy-benzylcarbamoyl)-2′-fluoro-bi phenyl-3-yloxy]-hexyl}-phenoxy)-butyric acid (84 mg, 91%) as a white amorphous solid.

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