反应详情

A 1 N sodium hydroxide aqueous solution (0.113 mL, 0.113 mmol) was added to a solution of (R)-amino-(4′-{1-ethyl-1-[4-(3-hydroxy-4,4-dimethyl-pentyl)-3-methyl-phenyl]-propyl}-2′-methyl-biphenyl-4-yl)-acetic acid methyl ester (Example 168-(2); 20.0 mg, 0.038 mmol) in methanol-tetrahydrofuran (1:1, 2 mL), and the mixture was stirred at room temperature for three hours. Then, the reaction mixture was concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (ethyl acetate:methanol:water=4:2:0.6) to give the target compound as a colorless oil (18.5 mg, 94%).

1. concentrationThen, the reaction mixture was concentrated under reduced pressure
2. customThe resulting residue was purified by silica gel chromatography (ethyl acetate:methanol:water=4:2:0.6)