title: New A-ring lactone triterpenoid saponins from the roots of Platycodon grandiflorum.
abstract: Three new A-ring lactone triterpenoid saponins, platycoside M-1 [3-O-beta-D-glucopyranosyl platycogenic acid A lactone], platycoside M-2 [3-O-beta-D-glucopyranosyl platycogenic acid A lactone 28-O-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranoside], and platycoside M-3 [3-O-beta-D-glucopyranosyl platycogenic acid A lactone 28-O-beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranoside], were isolated from the roots of Platycodon grandiflorum A. DC. Their chemical structures were elucidated on the basis of their spectral data and chemical evidence.
authors.affiliation: Shenyang Pharmaceutical University, School of Traditional Chinese Material, 103 Wenhua Road, Shenhe District, Shenuang 110016, China.
authors.forename: Wen-Wei
authors.initials: WW
authors.lastname: Fu
authors.forename: Noriko
authors.initials: N
authors.lastname: Shimizu
authors.forename: Tadahiro
authors.initials: T
authors.lastname: Takeda
authors.forename: De-Qiang
authors.initials: DQ
authors.lastname: Dou
authors.forename: Baohui
authors.initials: B
authors.lastname: Chen
authors.forename: Yue-Hu
authors.initials: YH
authors.lastname: Pei
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Chen
mesh_terms: D007783:Lactones / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D008968:Molecular Conformation; D018517:Plant Roots / Q000737:chemistry*; D031238:Platycodon / Q000737:chemistry*; D012015:Reference Standards; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D007783:Lactones; D012503:Saponins; D014315:Triterpenes