title: [Studies on chemical constituents from Grewia biloba].
abstract: OBJECTIVE
  To investigate the chemical constituents of Grewia biloba and find its bioactive compounds.
  
  
  METHODS
  Compounds were isolated by silica gel, MCI, Sephadex LH-20 and Rp-18 column chromatography, and purified by recrystallization. Their structures were elucidated by spectral analysis and other methods.
  
  
  RESULTS
  Six compounds were isolated and identified as friedelin (1) epi-friedelan-3-ol (2), heneicosanoic acid (3), beta-sitosterol (4), Propyl palmitate (5), eatechin (6), respectively.
  
  
  CONCLUSIONS
  Compounds 1-3, 5, 6 are isolated from Grewia genus for the first time and compounds 4 is isolated from Grewia biloba for the first time.
authors.affiliation: Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China. liu5308@sina.com
authors.forename: Jian-Qun
authors.initials: JQ
authors.lastname: Liu
authors.forename: Ji-Mei
authors.initials: JM
authors.lastname: Wu
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Kou
authors.forename: Qin
authors.initials: Q
authors.lastname: Hong
mesh_terms: D005227:Fatty Acids / Q000737:chemistry / Q000302:isolation & purification*; D032382:Grewia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010168:Palmitates / Q000737:chemistry / Q000302:isolation & purification*; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000094042:Lupanes
chemical_list: D005227:Fatty Acids; D010168:Palmitates; D012855:Sitosterols; D014315:Triterpenes; C419506:friedelan-3-ol; C025473:gamma-sitosterol; C060796:friedelin; D000094042:Lupanes; C517970:heneicosanoic acid