title: [Chemical Constituents in hypoglycemic active fraction of Celastrus orbiculatus leaf].
abstract: OBJECTIVE
  To study the chemical constituents in the hypoglycemic active fraction of Celastrus orbiculatus leaf.
  
  
  METHODS
  The constituents were separated and purified by column chromatography and thin layer chromatography, and their structures were elucidated by IR, MS and NMR.
  
  
  RESULTS
  Seven compounds were isolated from the active fraction of Celastnrus orbiculatus, which identified as kaempferol( 1) ,quercetin(2), kaempferol-7-0-α-L-rhamnoside (3), kaempferol-3,7-di-O-α-L-rhamnoside (4) , quercetin-3-0-β-D-glucoside(5), myricetrin(6) and kaempferol-3-0-rutinoside(7).
  
  
  CONCLUSIONS
  Chemical constituents in the hypoglycemic active fraction of Celastrus orbiculatus leaf are reported for the first time,and compounds 5,6 and 7 are firstly obtained from this plant.
authors.forename: Xiao-xia
authors.initials: XX
authors.lastname: Yu
authors.forename: Ting-ting
authors.initials: TT
authors.lastname: Zhang
authors.forename: Ding-yong
authors.initials: DY
authors.lastname: Wang
mesh_terms: D031247:Celastrus / Q000737:chemistry*; D005960:Glucosides; D007004:Hypoglycemic Agents / Q000302:isolation & purification*; D044949:Kaempferols; D018515:Plant Leaves / Q000737:chemistry; D011794:Quercetin
chemical_list: D005960:Glucosides; D007004:Hypoglycemic Agents; D044949:Kaempferols; C006552:kaempferol; D011794:Quercetin