title: The chemical constituents from leaves of Acer saccharum.
abstract: OBJECTIVE
  To study the chemical constituents of leaves of Acer saccharum.
  
  
  METHODS
  The leaves of Acer saccharum were extracted by ethanol. The concentrated material was partitioned by petroleum ether, ethyl acetate, and n-butanol. After extracted by ethyl acetate, the extract was isolated and purified by silica gel column chromatography and recrystallization. The compound structures were identified on the basis of spectral data and chemical methods.
  
  
  RESULTS
  Seven compounds were isolated from the leaves of Acer saccharum. Their compound structures were identified as 3-keton-ursane,3beta-hydroxy-12-olean-12-en and 5-en-7-hydroxy-sitosterol.
  
  
  CONCLUSIONS
  All the three compounds identified are isolated from this genus for the first time.
authors: Jiamusi University, College of Chemistry and Pharmacy, Jiamusi 154007, China.
authors: Yu
authors: Y
authors: Zhang
authors: Hong
authors: H
authors: Zhao
mesh_terms: D031002:Acer / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D013256:Steroids; D014315:Triterpenes