title: Triterpenoid saponins from leaves and stems of Panax quinquefolium L.
abstract: In the chemical investigation on the saponin composition of leaves and stems of Panax quinquefolium L., two new minor dammarane saponins, quinquenoside L1 (1) and L2 (2) have been isolated. By means of physico-chemical evidences and spectral analysis their structures were established as 3-O-[beta-D-glucopyranosyl-(1-2)-beta-D-glucopyranosyl]-20-O-beta-D-glucopyranosyl-dammara-23,25-diene-3beta, 12beta, 20(S)-triol (1) and 3-O-[beta-D-glucopyranosyl-(1-2)-beta-D-glucopyranosyl]-20-O-beta-D-glucopyranosyl-(24Z)-dammar-24-ene-3beta, 12beta, 20(S), 26-tetraol (2).
authors.affiliation: Research Department of Natural Medicine, Shenyang Pharmaceutical University, China. lixian@pub.sy.lnpta.net.cn
authors.forename: J H
authors.initials: JH
authors.lastname: Wang
authors.forename: W
authors.initials: W
authors.lastname: Li
authors.forename: Y
authors.initials: Y
authors.lastname: Sha
authors.forename: Y
authors.initials: Y
authors.lastname: Tezuka
authors.forename: S
authors.initials: S
authors.lastname: Kadota
authors.forename: X
authors.initials: X
authors.lastname: Li
mesh_terms: D002240:Carbohydrate Sequence; D036145:Ginsenosides; D007564:Japan; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D005894:Panax / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D036145:Ginsenosides; D012503:Saponins; C439534:quinquenoside L1; C439535:quinquenoside L2