Trifluoroacetic acid → [2-(4-{1-ethyl-1-[4-(3-hydroxy-4,4-dimethyl-pentyl)-3-methyl-phenyl]-propyl}-2-methyl-phenyl)-thiazol-4-yl]-acetic Acid Methyl Ester

Participants

Reaction Steps

Trifluoroacetic acid (0.30 mL) was added to a solution of {2-[4-(1-{4-[3-(t-butyl-dimethyl-silanyloxy)-4,4-dimethyl-pentyl]-3-methyl-phenyl}-1-ethyl-propyl)-2-methyl-phenyl]-thiazol-4-yl}-acetic acid ethyl ester (Example 69-(1); 44.4 mg, 0.0683 mmol) in dichloromethane (1.7 mL) at room temperature, and the mixture was stirred at room temperature for one hour. The solvent in the reaction solution was distilled off under reduced pressure. The residue was purified by silica gel chromatography (hexane/ethyl acetate=4/1) to give the title compound (34.0 mg, 93%).

Provenance & Evidence