title: [Phenolic and phenylethanoidal glycosides from branch of Fraxinus sieboldiana].
abstract: OBJECTIVE
  To investigate chemical constituents from an ethanolic extract of the branch of Fraxinus sieboldiana (Oleaceaue)
  
  
  METHODS
  The constituents were isolated and purified by a combination of various chromatographic techniques including silica gel, macroporous adsorbent resin, Sephadex LH-20, and preparative HPLC. Structures of the isolates were elucidated by spectroscopic methods including 1D and 2D NMR and MS techniques.
  
  
  RESULTS
  Four phenolic and twelve phenylethanoidal glycosides were obtained and their structures were identified as 2,6-dimethoxy-p-hydroquinone-4-O-beta-D-glucopyranoside (1), 2,6-dimethoxy-p-hydroquinone-1-O-beta-D-glucopyranoside (2), 4-hydroxy-3-methoxyphenyl beta-D-glucopyranoside (3), 4-hydroxy-3-methoxyphenyl beta-D-xylopyranosyl (1-->6)-O-beta-D-glucopyranoside (4), osmanthuside H (5), 2-(4-hydroxyphenyl) ethyl beta-D-glucopyranoside (6), 2-(3, 4-dihydroxyphenyl) ethyl beta-D-glucopyranoside (7), 2-hydroxy-4-(2-hydroxyethyl)-phenyl beta-D-glucopyranoside (8), 4-(2-hydroxyethyl)-2-methoxyphenyl beta-D-glucopyranoside (9), calceolarioside B (10), calceolarioside A (11), ferruginoside A (12), isolugrandoside (13), acteoside (14), chiritotoside C (15), and plantasisoside (16).
  
  
  CONCLUSIONS
  Compounds 1-4,9,12, 13 and 16 were obtained from the genus Fraxinus for the first time.
authors.affiliation: Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Lin
authors.forename: Mingtao
authors.initials: M
authors.lastname: Liu
authors.forename: Sujuan
authors.initials: S
authors.lastname: Wang
authors.forename: Shuai
authors.initials: S
authors.lastname: Li
authors.forename: Yongchun
authors.initials: Y
authors.lastname: Yang
authors.forename: Jiangong
authors.initials: J
authors.lastname: Shi
mesh_terms: D000431:Ethanol / Q000737:chemistry; D031661:Fraxinus / Q000737:chemistry*; D006027:Glycosides / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D019800:Phenol / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry*
chemical_list: D006027:Glycosides; D019800:Phenol; D000431:Ethanol