title: [Studies on constituents of Rosa bracteata fruits(II)].
abstract: OBJECTIVE
  To find the active constituents of Rosa bracteata Wendl. to antagonize withdrawal syndrome in morphinedependent mice.
  
  
  METHODS
  The constituents were isolated and purified by silica gel chromatography repeatedly. Their structures were made clear by chemical reactions and on the evidence of spectroscopy.
  
  
  CONCLUSIONS
  Five compounds were isolated from the fruits and four of them were determined as trimethly citrate, dimethyl 3-carboxyl-3-hydroxypentanedioate, 3-hydroxy-3-methoxycarbonyl-pentanedioic acid, calcium citrate, which were found from the Rose genus plant for the first time.
authors.affiliation: Hunan College of TCM, Changsha 410004.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Xu
authors.forename: Song
authors.initials: S
authors.lastname: Huang
authors.forename: Fanglu
authors.initials: F
authors.lastname: Du
authors.forename: Caiyun
authors.initials: C
authors.lastname: Peng
authors.forename: Yuwang
authors.initials: Y
authors.lastname: Tian
mesh_terms: D019355:Calcium Citrate / Q000032:analysis / Q000302:isolation & purification*; D002951:Citrates / Q000032:analysis / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005638:Fruit / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D008970:Molecular Weight; D010946:Plants, Medicinal / Q000737:chemistry*; D027826:Rosa / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002951:Citrates; D004365:Drugs, Chinese Herbal; C478838:trimethyl citrate; D019355:Calcium Citrate