title: New triterpene saponins from the root of Ilex pubescens.
abstract: Two new triterpene glycosides named ilexpublesnin A (1) and ilexpublesnin B (2) were isolated from the root of Ilex pubescens. Their structures were determined as 3-O-(β-D-xylopyranosyl)-28-O-(β-D-glucopyranosyl)-3β, 19α-dihydroxyurs-23-oxo-12-en-28-oic acid (1) and 28-O-(β-D-xylopyranosyl-(2→1)-β-D-glucopyranosyl)-3β, 19α-dihydroxyurs-23-oxo-12-en-28-oic acid (2) on the basis of chemical and spectroscopic methods.
authors.affiliation: School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, 232 Waihuan East Road, Guangzhou, Guangdong Province, 510006, RP China.
authors.forename: Cui-Xian
authors.initials: CX
authors.lastname: Zhang
authors.forename: Chao-Zhan
authors.initials: CZ
authors.lastname: Lin
authors.forename: Tian-Qin
authors.initials: TQ
authors.lastname: Xiong
authors.forename: Chen-Chen
authors.initials: CC
authors.lastname: Zhu
authors.forename: Jin-Yan
authors.initials: JY
authors.lastname: Yang
authors.forename: Zhong-Xiang
authors.initials: ZX
authors.lastname: Zhao
mesh_terms: D030017:Ilex / Q000737:chemistry*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D018517:Plant Roots; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes; C557243:ilexpublesnin A; C557242:ilexpublesnin B