title: [Studies on chemical constituents of Cistanche tubulosa (Schenk) R. Wight].
abstract: OBJECTIVE
  To investigate the chemical constituents of Cistanche tubulosa.
  
  
  METHODS
  The chemical constituents were isolated by solvent extraction together with various chromatographic techniques including preparative HPLC. The structures were elucidated on the basis of chemical evidence and spectral data.
  
  
  RESULTS
  Four iridoid glycosides, one lignan glycoside and one monoterpenoid were isolated from the 95% ethanol extract from the stem of C. tubulosa and identified as adoxosidic acid(I), 8-epiloganic acid(II), geniposidic acid (III), mussaenosidic acid(IV), (+)-syringaresinol-O-beta-D-gluco pyranoside(V) and 8-hydroxygeraniol(VI).
  
  
  CONCLUSIONS
  Compounds I and VI were isolated from the genus of Cistanche for the first time. Compounds III, IV and V were isolated from this plant for the first time.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, Beijing 100083, China.
authors.forename: Z H
authors.initials: ZH
authors.lastname: Song
authors.forename: S H
authors.initials: SH
authors.lastname: Mo
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
authors.forename: P F
authors.initials: PF
authors.lastname: Tu
authors.forename: Y Y
authors.initials: YY
authors.lastname: Zhao
authors.forename: J H
authors.initials: JH
authors.lastname: Zheng
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry / Q000302:isolation & purification; D031671:Cistanche / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D057888:Iridoid Glucosides; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D019684:Magnoliopsida / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification
chemical_list: C471578:8-hydroxygeraniol; D002264:Carboxylic Acids; D004365:Drugs, Chinese Herbal; D005960:Glucosides; D057888:Iridoid Glucosides; D039823:Iridoids; D013729:Terpenes; C471577:adoxosidic acid; C058966:geniposidic acid