title: [Structure identification of jujuboside D].
abstract: OBJECTIVE
  To study the chemical constituents of Ziziphus jujuba Mill var. Spinosa (Bunge) Hu ex. H. F. Chou.
  
  
  METHODS
  To separate the constituents by using various kinds of chromatography and identify their structures on the basis of spectral analysis.
  
  
  RESULTS
  Five compounds were isolated and their structures were established as jujuboside D (1), jujuboside A (2), 5,7,4'-trihydroxyflavonol-3-O-beta-D-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside (3), 6'''-coumaroylspinosin (4) and phenylalanine (5).
  
  
  CONCLUSIONS
  Compound 1 is a new compound named jujuboside D, 4 is reported as rotamer for the first time, 3 and 5 isolated from this plant for the first time.
authors.affiliation: Division of Natural Medical Chemistry, School of Pharmaceutical Sciences, Peking University, Beijing 100083, China.
authors.forename: Qin-xiang
authors.initials: QX
authors.lastname: Liu
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.forename: Hong
authors.initials: H
authors.lastname: Liang
authors.forename: Yu-ying
authors.initials: YY
authors.lastname: Zhao
authors.forename: Meng-jun
authors.initials: MJ
authors.lastname: Liu
mesh_terms: D008968:Molecular Conformation; D015394:Molecular Structure; D010649:Phenylalanine / Q000737:chemistry / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D012639:Seeds / Q000737:chemistry; D031957:Ziziphus / Q000737:chemistry*
chemical_list: D012503:Saponins; C496395:jujuboside D; D010649:Phenylalanine; C087808:jujuboside A