title: A new triterpenoid glycoside from the roots of Ilex asprella.
abstract: OBJECTIVE
  To study the chemical constituents of the roots of Ilex asprella Champ. ex Benth.
  
  
  METHODS
  Compounds were isolated by silica gel, ODS, and Sephadex LH-20 column chromatography, and their structures were elucidated on the basis of physicochemical properties and spectroscopic analysis.
  
  
  RESULTS
  Four triterpenoid glycosides were isolated and identified as (3β)-19-hydroxy-28-oxours-12-en-3-yl β-D-glucopyranosiduronic acid n-butyl ester (1), ilexasoside A (2), monepaloside F (3), and ilexoside A (4).
  
  
  CONCLUSIONS
  Compound 1 is a new triterpenoid glycoside, and compounds 3 and 4 were isolated from this plant for the first time.
authors.affiliation: School of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
authors.forename: Zhong-Xiang
authors.initials: ZX
authors.lastname: Zhao
authors.forename: Chao-Zhan
authors.initials: CZ
authors.lastname: Lin
authors.forename: Chen-Chen
authors.initials: CC
authors.lastname: Zhu
authors.forename: Wen-Jiang
authors.initials: WJ
authors.lastname: He
mesh_terms: D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D030017:Ilex / Q000737:chemistry*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D006027:Glycosides; D010936:Plant Extracts; D014315:Triterpenes
keywords: Ilex asprella; Treterpenoids; Triterpenoid glycosides