title: [Study on the chemical constituents of the leaves from Crataegus pinnatifida Bge. var. major N. E. Br].
abstract: OBJECTIVE
  to study the chemical components of the leaves from Crataegus pinnatifida Bge. var major N. E. Br.
  
  
  METHODS
  Constituents were isolated by using silica gel, porous resin, Sephadex LH-20 chromatographic technique, etc. Their structures were elucidated by chemical and spectroscopic methods.
  
  
  RESULTS
  Fourteen compounds were identified as quercetin (1), hyperoside (2), quercetin 3-O-beta-D-glucoside (3), rutin (4), quercetin 3-O-[alpha-L-rhamnopyranosyl(1-4)-alpha-L-rhamnopyranosyl-(1-6)-beta-glucopyranoside] (5), vitexin (6), 6"-O-acetyl-vitexin (7), vitexin 2"-O-rhamnoside (8), vitexin 4"-O-glucoside (9), chlorogenic acid (10), ursolic acid (11), beta-sitosterol (12), beta-daucosterol (13), n-triacontanol (14).
  
  
  CONCLUSIONS
  Compound 5 and 14 were isolated from Crataegus L. for the first time.
authors.affiliation: Jiangxi College of Traditional Chinese Medicine, Nanchang 330006, China. rhliu@163.com
authors.forename: Rong-Hua
authors.initials: RH
authors.lastname: Liu
authors.forename: Bo-Yang
authors.initials: BY
authors.lastname: Yu
mesh_terms: D047310:Apigenin / Q000737:chemistry / Q000302:isolation & purification; D027825:Crataegus / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification; D012431:Rutin / Q000737:chemistry / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification; D000097245:Ursolic Acid
chemical_list: D047310:Apigenin; D047309:Flavones; D011794:Quercetin; D012431:Rutin; D014315:Triterpenes; D000097245:Ursolic Acid; C021329:vitexin rhamnoside