title: Two novel dammarane-type compounds from the leaves and stems of Panax quinquefolium L.
abstract: Two new dammarane-type compounds were isolated from the leaves and stems of Panax quinquefolium L. The new compounds were named as pseudo-ginsenoside RT6 (1) and pseudoginsengenin R1 (2). The structures of the new compounds were elucidated by the combined analysis of NMR and HR-ESI-MS as (20S,24R)-6-O-β-d-glucopyranosyl-dammar-3-one-20,24-epoxy-6α,12β,25-triol (1) and (20S,24R)-dammar-3-one-20,24-epoxy-6α,12β,25-triol (2).
authors.affiliation: a Institute of Frontier Medical Science, Jilin University , Changchun , 130021 , China.
authors.forename: Jin-Ping
authors.initials: JP
authors.lastname: Liu
authors.forename: Xu
authors.initials: X
authors.lastname: Tian
authors.forename: Hai-Yu
authors.initials: HY
authors.lastname: Liu
authors.forename: Qing-He
authors.initials: QH
authors.lastname: Zhang
authors.forename: Dan
authors.initials: D
authors.lastname: Lu
authors.forename: Ping-Ya
authors.initials: PY
authors.lastname: Li
authors.forename: Chun-Fang
authors.initials: CF
authors.lastname: Zhao
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D036145:Ginsenosides / Q000737:chemistry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D005894:Panax / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012503:Saponins / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000097669:Dammaranes
chemical_list: D004365:Drugs, Chinese Herbal; D036145:Ginsenosides; D012503:Saponins; D014315:Triterpenes; D000097669:Dammaranes; C585796:pseudo-ginsenoside RT6; C585795:pseudoginsengenin R1