title: [Studies on the chemical constituents of Dryopteris fragrans].
abstract: OBJECTIVE
  To study the chemical constituents of Dryopteris fragrans.
  
  
  METHODS
  The constituents of CHCl3-soluble portion and ethyl acetate-soluble portion from the alcohol extract were isolated and purified by means of chromatography. All the compounds were identified by their physical characteristics and spectral features.
  
  
  RESULTS
  Five compounds were isolated and identified as beta-sitosterol (I), rutin (II), quercetin (III), quercetin-3-O-beta-D-pyranglucoside (IV) and 5,7-dihydroxy-2-hydroxymethyl chromone (V).
  
  
  CONCLUSIONS
  Compounds II - V are isolated from this plant for the first time.
authors: Guangdong Food and Drug Vocational College, Guangzhou 510520, China. libo8207@163.com
authors: Boe
authors: B
authors: Li
authors: Jun-Fang
authors: JF
authors: Zhu
authors: Zhong-Jie
authors: ZJ
authors: Zou
authors: Yong-Qin
authors: YQ
authors: Yin
authors: Zhi-Bin
authors: ZB
authors: Shen
mesh_terms: D000085:Acetates; D032492:Dryopteris / Q000737:chemistry*; D000431:Ethanol; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D012431:Rutin / Q000737:chemistry / Q000302:isolation & purification*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D000085:Acetates; D012855:Sitosterols; D000431:Ethanol; D012431:Rutin; C025473:gamma-sitosterol; C007650:ethyl acetate; D011794:Quercetin