title: Three new triterpenoid saponins from Ilex pubescens.
abstract: Three new triterpene saponins, ilexsaponins D-F (1-3), were isolated from the roots of Ilex pubescens. Their structures were elucidated as 3-O-β-D-glucopyranosyl(1 → 3)-α-L-arabinopyranosyl urs-12,18-diene-24,28-dioic acid 28-O-β-D-glucopyranoside (1), 3-O-β-D-glucopyranosyl(1 → 3)-α-L-arabinopyranosyl urs-12,18-diene-24,28-dioic acid (2), and 3-O-β-D-glucopyranosyl(1 → 3)-α-L-arabinoyranosyl-30-hydroxyurs-12,19-diene-24,28-dioic acid 28-O-β-D-glucopyranoside (3) on the basis of the chemical and spectroscopic evidence.
authors.affiliation: Bioengineering College, Xihua University, Chengdu 610039, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Li
authors.forename: Yu-Xin
authors.initials: YX
authors.lastname: He
authors.forename: Mei-Ling
authors.initials: ML
authors.lastname: Gou
authors.forename: Chun
authors.initials: C
authors.lastname: Dai
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D030017:Ilex / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013729:Terpenes; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D012503:Saponins; D013729:Terpenes; D014315:Triterpenes; C578229:ilexsaponin D; C578230:ilexsaponin E; C578231:ilexsaponin F