title: [Chemical constituents from Neo-Taraxacum siphonathum].
abstract: OBJECTIVE
  To study the chemical constituents from the antioxidant fraction of Neo-Taraxacum siphonathum.
  
  
  METHODS
  Various chromatographic techniques were used to isolate and purify the constituents. The structures were elucidated on the basis of chemical evidence and spectral analysis.
  
  
  RESULTS
  Ten compounds were isolated and identified from Neo-T. siphonathum, caffeic acid (1), chlorogenic acid (2), quercetin (3), luteolin (4), quercetin-3-O-beta-D-glucopyranoside (5), quercetin-3-O-alpha-D-arabinofuranoside (6), quercetin-3-O-alpha-D-arabinopyranoside (7), luteolin-7-O-beta-D-glucopyranoside (8), beta-sitosterol (9) and daucosterol (10).
  
  
  CONCLUSIONS
  Compounds 1-10 were isolated from this plant for the first time.
authors.affiliation: School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. shuyshi@gmail.com
authors.forename: Shuyun
authors.initials: S
authors.lastname: Shi
authors.forename: Honghao
authors.initials: H
authors.lastname: Zhou
authors.forename: Yuping
authors.initials: Y
authors.lastname: Zhang
authors.forename: Kelong
authors.initials: K
authors.lastname: Huang
authors.forename: Suqin
authors.initials: S
authors.lastname: Liu
mesh_terms: D002109:Caffeic Acids / Q000737:chemistry / Q000302:isolation & purification; D002726:Chlorogenic Acid / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D047311:Luteolin / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D031205:Taraxacum / Q000737:chemistry*
chemical_list: D002109:Caffeic Acids; D005960:Glucosides; D012855:Sitosterols; D002726:Chlorogenic Acid; C025473:gamma-sitosterol; C066408:luteolin-7-glucoside; D011794:Quercetin; D047311:Luteolin; C040048:caffeic acid; C011015:lyoniside