title: Two new triterpenoid saponins from ginseng medicinal fungal substance.
abstract: Two new dammarane-type triterpenoid saponins, namely ginsenosides Rb4 (1) and Rb5 (2), were isolated from ginseng medicinal fungal substance. The structures of 1 and 2 were established as 3β,12β,20(S)-trihydroxydammar-24(25)-ene-3-O-[α-d-glucopyranosyl-(1→4)-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl]-20-O-β-d-glucopyranoside and 3β,12β,20(S)-trihydroxydammar-24(25)-ene-3-O-[α-d-glucopyranosyl-(1→4)-α-d-glucopyranosyl-(1→4)-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl]-20-O-β-d-glucopyranoside on the basis of spectroscopic analysis and chemical analysis, respectively.
authors.affiliation: a College of Pharmacy, Changchun University of Chinese Medicine , Changchun 130117 , China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
authors.affiliation: a College of Pharmacy, Changchun University of Chinese Medicine , Changchun 130117 , China.
authors.forename: Jin-Hui
authors.initials: JH
authors.lastname: Zhang
authors.affiliation: a College of Pharmacy, Changchun University of Chinese Medicine , Changchun 130117 , China.
authors.forename: Xin-Wen
authors.initials: XW
authors.lastname: Wang
authors.affiliation: a College of Pharmacy, Changchun University of Chinese Medicine , Changchun 130117 , China.
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Liu
authors.affiliation: a College of Pharmacy, Changchun University of Chinese Medicine , Changchun 130117 , China.
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.affiliation: a College of Pharmacy, Changchun University of Chinese Medicine , Changchun 130117 , China.
authors.forename: Zhi-Dong
authors.initials: ZD
authors.lastname: Qiu
mesh_terms: D036145:Ginsenosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D005894:Panax / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D027343:Rhizome / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000097669:Dammaranes
chemical_list: D036145:Ginsenosides; D012503:Saponins; D014315:Triterpenes; D000097669:Dammaranes; C000613856:ginsenoside Rb4; C000613857:ginsenoside Rb5
keywords: Araliaceae; ginseng; ginsenoside Rb4; ginsenoside Rb5; triterpenoid saponin