60.0 mg (0.216 mmol) of 5-(4-piperidinyl)-10,11-dihydro-5H-dibenzo[b,f]azepine, 50.0 mg (0.258 mmol) of N-t-butoxycarbonylglycine, 62.1 mg (0.324 mmol) of 1-ethyl-3-(3′-dimethylaminopropyl)carbodiimide hydrochloride and 3 mg (0.03 mmol) of 4-dimethylaminopyridine were dissolved in 1 ml of dichloromethane. 43.7 mg (0.432 mmol) of triethylamine was added to the obtained solution, and they were stirred for 1 hour. The product was purified by the silica gel chromatography (hexane:ethyl acetate=89:11 to 65:35) to obtain the title compound.
