title: A new minor triterpene saponin from kaixin-san prescription.
abstract: A new minor oleanane-type saponin, ginsenoside-R(OA) (1), has been isolated from the extract of Kaixin-San, a prescription composed of Panax ginseng and other medicinal herbs, together with 15 known ginsenosides. The structure of 1 was established as 3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucuronopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside by chemical and spectroscopic evidence. In addition, the presence of ginsenoside-R(OA) in ginseng was confirmed by HPLC-ESI-MS.
authors.affiliation: Institute of Medicinal Plants Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, China.
authors.forename: Jiang-Yun
authors.initials: JY
authors.lastname: Liu
authors.forename: Sheng-Yuan
authors.initials: SY
authors.lastname: Xiao
authors.forename: Wei-Fen
authors.initials: WF
authors.lastname: Shang
authors.forename: Li-Zhen
authors.initials: LZ
authors.lastname: Xu
authors.forename: Shi-Lin
authors.initials: SL
authors.lastname: Yang
mesh_terms: D002851:Chromatography, High Pressure Liquid; D013058:Mass Spectrometry; D005894:Panax / Q000737:chemistry*; D010940:Plant Proteins / Q000737:chemistry* / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry
chemical_list: D010940:Plant Proteins; C104839:ginseng pentadecapeptide, Panax ginseng