Abstract
The fruits of Prunus davidiana were extracted with 80 % aqueous methanol at room temperature. The concentrated extract was partitioned as ethyl acetate (EtOAc), n-butyl alcohol, and water fractions. From the EtOAc fraction, three triterpenoids were isolated through the repeated silica gel (SiO2) and octadecyl SiO2 column chromatographies. Based on physico-chemical and spectroscopic data including nuclear magnetic resonance, mass spectrometry, and infrared, the compounds were identified to be ursolic acid (1), corosolic acid (2), and α-amyrin (3).
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