Terpene and lignan glycosides from the leaves of Aralia chinensis

Abstract

From the methanol extract of Aralia chinensis leaves, three terpene glycosides (1-3) and One lignan glycoside (4) were isolated by using various chromatographic methods. Their chemical structures were identified as (2R,6S)-borane-2,6-diol 2-0-β-D-apiofuranosyl-(1—>6)-glucopyranoside (1), 3-0-β-D-glucopyranosyl-(l—>3)-β-D-glucuronopyranosyl- oleanolic acid-28-C-β-D-glucopyranoside (2), 3-0-[α-L-arabinofuranosyl-( 1—>4)-O-β-D-glucopyranosyl-(1—>3)]-y9-D-glucuronopyranosyl-oleanolic acid-28-O-β-D-glucopyranoside (3), and liriodendrin (4) by using combination of ESI-MS, 1D and 2D NMR spectral data as well as by comparison with the previous literature.