title: [Chemical constituents from seeds of Ziziphus mauritiana].
abstract: OBJECTIVE
  To study the chemical constituents in the seeds of Ziziphus mauritiana.
  
  
  METHODS
  The constituents were isolated by silica column chromatography and their structures were elucidated by physico-chemical properties and spectroscopic analysis.
  
  
  RESULTS
  Twelve compounds were isolated from the seeds of Ziziphus mauritiana and identified as betulinic aldehyde (1), betulinic acid (2), ceanothic acid (3), frangufoline (4), spinosin (5), beta-sitosterol (6), daucosterol (7), daucosterol-6'-octadecanoate (8), sucrose (9), docosanoic acid (10), stearic acid (11), palmitoleic acid (12).
  
  
  CONCLUSIONS
  All the compounds are obtained from Ziziphus mauritiana seeds for the first time and compounds 4,5 and 8 are isolated from this plant for the first time.
authors.forename: Sheng
authors.initials: S
authors.lastname: Guo
authors.forename: Jin-Ao
authors.initials: JA
authors.lastname: Duan
authors.forename: Jin-Long
authors.initials: JL
authors.lastname: Zhao
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Qian
authors.forename: Wen-Jie
authors.initials: WJ
authors.lastname: Zhang
mesh_terms: D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009654:Norsteroids / Q000737:chemistry / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D031957:Ziziphus / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D009654:Norsteroids; D010936:Plant Extracts; C107972:ceanothic acid; C055669:spinosin