Hydrochloric Acid → 4'-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]-amino]ethoxy]-3-(isopropylthio)-4-biphenylcarboxylic acid hydrochloride

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Reaction Steps

To a solution of methyl 4′-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]amino]ethoxy]-3-(isopropylthio)-4-biphenylcarboxylate (110 mg) in methanol (1.65 ml) was added sodium hydroxide aqueous solution (1N 1.11 ml) and stirred at room temperature overnight. To the mixture was added hydrochloric acid aqueous solution (1N, 1.22 ml) and concentrated in vacuo. The residue was solved with methanol, added hydrogen chloride 1,4-dioxane solution (4M), concentrated in vacuo and dried to give 4′-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]-amino]ethoxy]-3-(isopropylthio)-4-biphenylcarboxylic acid hydrochloride (97 mg).

Provenance & Evidence