Hydrochloric Acid → (4'-{1-ethyl-1-[4-(3-hydroxy-4,4-dimethyl-pentyl)-3-methyl-phenyl]-propyl}-2'-methyl-biphenyl-4-yl)-hydroxy-acetic Acid

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Reaction Steps

A 2 N sodium hydroxide aqueous solution (0.070 mL) was added to a solution of (4′-{1-ethyl-1-[4-(3-hydroxy-4,4-dimethyl-pentyl)-3-methyl-phenyl]-propyl}-2′-methyl-biphenyl-4-yl)hydroxy-acetic acid methyl ester (Example 155-(2); 17.5 mg, 0.0330 mmol) in methanol (0.47 mL) at room temperature, and the mixture was stirred at room temperature for 5.5 hours. The mixture was acidified with dilute hydrochloric acid aqueous solution, followed by extraction with ethyl acetate. The extract was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure to give the title compound (17.0 mg, 100%).

Provenance & Evidence