title: [Chemical constituents of Rhododendron seniavinii].
abstract: OBJECTIVE
  To study the chemical constituents of Rhododendron seniavinii.
  
  
  METHODS
  Compounds were isolated from the aqueous extract of the leaves of R. seniavinii by using Sephadex LH-20, ODS open column chromatography and other means. Their structures were elucidated according to spectral data and physiochemical properties.
  
  
  RESULTS
  Thirteen compounds were isolated from R. seniavinii and identified as 5-methoxydehydroconiferyl alcohol (1), dehydroconiferyl alcohol (2), (-)-syringaresinol (3), (-)-lyoniresinol (4), (+)-lyoniresinol 3alpha-O-beta-D-glucopyranoside (5), (-)-lyoniresinol 3alpha-O-beta-D-glucopyranoside (6), 3,4,5-trimethoxyphenyl-1-O-beta-D-glucopyranoside (7), nikoenoside (8), 3,5,7-trihydroxychromone-3-0-alpha-L-rhamnopyranoside (9), 3,4,5-trimethoxyphenol (10), scopoletin (11), scopolin (12) and quercitrin (13).
  
  
  CONCLUSIONS
  Compounds 1-12 were obtained from this plant for the first time.
authors.affiliation: College of Pharmacy, Institute of Traditional Chinese Medicine and Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou 510632, China. woshqq23@163.com
authors.forename: Qing-Qing
authors.initials: QQ
authors.lastname: Wang
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhang
authors.forename: Wen-Cai
authors.initials: WC
authors.lastname: Ye
authors.forename: Guang-Xiong
authors.initials: GX
authors.lastname: Zhou
mesh_terms: D002850:Chromatography, Gel; D003374:Coumarins / Q000737:chemistry / Q000302:isolation & purification; D003911:Dextrans; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D013058:Mass Spectrometry; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D029793:Rhododendron / Q000737:chemistry*; D012603:Scopoletin / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D003374:Coumarins; D003911:Dextrans; D005960:Glucosides; D010936:Plant Extracts; C417572:scopolin; C012526:quercitrin; C025614:sephadex; D011794:Quercetin; D012603:Scopoletin