title: Saponins and other constituents from the leaves of Aralia elata.
abstract: A new triterpenoid saponin, together with five known saponins, were isolated from the nonpolar n-hexane fraction of the leaves of Aralia elata. The structure of the new saponin, durupcoside C, was elucidated as hederagenin 3-O-beta-D-glucopyranosyl(1-->3)-beta-D-glucopyranosyl(1-->3)-alpha-L-arabinopyranoside on the basis of spectroscopic analysis. The known saponins were characterized as 3-O-alpha-L-rhamnopyranosyl(1-->2)-alpha-L-arabinopyranosyl hederagenin 28-O-beta-D-xylopyranosyl(1-->6)-beta-D-glucopyranosyl ester, hederagenin 3-O-beta-D-glucopyranosyl(1-->3)-alpha-L-rhamnopyranosyl(1-->2)-alpha-L-arabinopyranoside, oleanolic acid 3-O-beta-D-glucopyranosyl(1-->3)-alpha-L-rhamnopyranosyl(1-->2)-alpha-L-arabinopyranoside, hederagenin 3-O-alpha-L-rhamnopyranosyl(1-->2)-alpha-L-arabinopyranoside (alpha-hederin), and hederagenin 3-O-beta-D-glucopyranosyl(1-->3)-alpha-L-arabinopyranoside (collinsonidin). In addition, two known lipids, Arisaema glyceride 3 and ceramide mixtures were also isolated and characterized. Collinsonidin and two known lipids were isolated for the first time from this plant.
authors.affiliation: Natural Products Research Institute and College of Pharmacy, Seoul National University, Seoul 110-460, Korea.
authors.forename: Ju Sun
authors.initials: JS
authors.lastname: Kim
authors.forename: Sang Hee
authors.initials: SH
authors.lastname: Shim
authors.forename: Sungwook
authors.initials: S
authors.lastname: Chae
authors.forename: Sang Jun
authors.initials: SJ
authors.lastname: Han
authors.forename: Sam Sik
authors.initials: SS
authors.lastname: Kang
authors.forename: Kun Ho
authors.initials: KH
authors.lastname: Son
authors.forename: Hyeun Wook
authors.initials: HW
authors.lastname: Chang
authors.forename: Hyun Pyo
authors.initials: HP
authors.lastname: Kim
authors.forename: KiHwan
authors.initials: K
authors.lastname: Bae
mesh_terms: D027983:Aralia; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D010936:Plant Extracts; D012503:Saponins