Isolation and identification of two new compounds from Semen Persicae

Five compounds were isolated from the ethyl acetate fraction of Semen Persicae by using various chromatographic methods, including ODS, Sephadex LH-20, HPLC and semipreparative HPLC. Their structures were identified by 1D-NMR, 2D-NMR, HR-ESI-MS, UV, IR, circular dichroism (CD) and ECD calculation techniques: (2R, 3R)-5, 7, 4′-trihydroxy-3′-methoxy-3-formylflavan-3-ol-5-O-β-D-glucopyranoside (1), (7R, 8S)-dihydrodehydrodiconiferyl 6″-benzoyl alcohol-9-O-β-D-glucopyranoside (2), (7R, 8S)-dihydrodehydrodiconiferyl alcohol-9-β-O-D-glucopyranosid (3), 2-methoxy-4-(2-propenyl)-phenyl-O-β-D-glucopyranoside (4), 2-4-(3-hydroxypropyl)-2-methoxyphenoxy-propane-1, 3-diol (5). Compound 1 and 2 are new compounds, and compounds 3-5 were obtained from Prunus davidiana (Carr.) Franch. for the first time.