title: Two new dammarane-type saponins from leaves of Panax quinquefolium.
abstract: Two new saponins were isolated from the leaves of Panax quinquefolium and their structures were elucidated as 3β, 6α, 20S-trihydroxy-12β, 23R-epoxydammar-24-ene 6-O-[α-L-rhamnosyl(1 → 2)-β-D-glucopyranosyl]-20-O-β-D-glucopyranoside (1) and 3β, 20S-dihydroxy-12β, 23R-epoxydammar-24-ene 3-O-[β-D-glucopyranosyl(1 → 2)-β-D-glucopyranosyl]-20-O-β-D-glucopyranoside (2) on the basis of physicochemical evidence.
authors.affiliation: The Secondary Affiliated Hospital, Liaoning University of Traditional Chinese Medicine, Shenyang 110034, PR China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xiang
authors.forename: Jia
authors.initials: J
authors.lastname: Lv
authors.forename: Zhixun
authors.initials: Z
authors.lastname: Zhou
authors.forename: Yingying
authors.initials: Y
authors.lastname: Li
authors.forename: Deqiang
authors.initials: D
authors.lastname: Dou
authors.forename: Jinming
authors.initials: J
authors.lastname: Zhao
mesh_terms: D002681:China; D002851:Chromatography, High Pressure Liquid; D000431:Ethanol; D015394:Molecular Structure; D005894:Panax / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000097669:Dammaranes
chemical_list: D000431:Ethanol; D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes; D000097669:Dammaranes