To a solution mixture of the obtained methyl 2-(2-(benzyloxy)-5-(1-isopropylpiperidin-4-yl)benzamido)-4-phenylbenzoate (0.12 g) in ethyl acetate (1.5 mL) and methanol (1.5 mL), 10% palladium-carbon (0.12 g) was added, followed by stirring under a hydrogen atmosphere at room temperature for 1 hour. Chloroform was added to the reaction mixture, and the insoluble substance was removed by filtration. The solvent was evaporated under reduced pressure to obtain 0.086 g of methyl 2-(2-hydroxy-5-(1-isopropylpiperidin-4-yl)benzamido)-4-phenylbenzoate as an orange solid.
