title: [Chemical Constituents of Eucommia ulmoides in Guizhou Province].
abstract: OBJECTIVE
  To study the chemical constituents of Eucommia ulmoides in Guizhou Province.
  
  
  METHODS
  Silica gel, Sephadex LH-20, RP-18, MCI and semi-preparative HPLC were used to study the chemical constituents of Eucommia ulmoides, and the chemical structures were elucidated by application of spectral data.
  
  
  RESULTS
  16 compounds were isolated from the bark of Eucommia ulmoides. Their structures were identified as β-sitosterol (1), cycloeucalenol (2), betulinic acid (3), 24-methylenecycloartenone (4), cycloeucalenone (5), salicifoliol (6), pinoresinol (7), genipin (8) , alternariol (9), balanophonin (10), eucommidiol (11), pinoresinol-4'-O-β-D-glucopyranoside (12), eucommiol (13), deoxyeucommiol (14), 8-hydroxypinoresinol (15), and dehydrodiconiferyl alcohol -γ'-O-β-D-glucopyranoside (16).
  
  
  CONCLUSIONS
  Seven compounds, including compounds 2,4 - 6,9, 10 and 15 are isolated from Eucommia ulmoides for the first time, and compound 14 is isolated from the bark of Eucommia ulmoides for the first time.
authors.forename: Gui-hui
authors.initials: GH
authors.lastname: Wu
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.forename: Li-hua
authors.initials: LH
authors.lastname: Zheng
authors.forename: Tao
authors.initials: T
authors.lastname: Huang
authors.forename: Xiao-jiang
authors.initials: XJ
authors.lastname: Hao
authors.forename: Jian-xin
authors.initials: JX
authors.lastname: Zhang
mesh_terms: D002851:Chromatography, High Pressure Liquid; D031283:Eucommiaceae / Q000737:chemistry*; D005663:Furans; D017705:Lignans; D053978:Pentacyclic Triterpenes; D010636:Phenols; D064209:Phytochemicals / Q000032:analysis*; D024301:Plant Bark / Q000737:chemistry*; D012855:Sitosterols; D014315:Triterpenes; D000094062:Betulinic Acid
chemical_list: C432984:24-methylenecycloartenone; C542293:8-hydroxypinoresinol; D005663:Furans; D017705:Lignans; D053978:Pentacyclic Triterpenes; D010636:Phenols; D064209:Phytochemicals; D012855:Sitosterols; D014315:Triterpenes; C577911:balanophonin; C472599:cycloeucalenone; C080686:dehydrodiconiferyl alcohol; C025473:gamma-sitosterol; C103298:pinoresinol; D000094062:Betulinic Acid