Antioxidative glycosides from the leaves of Ligustrum robustum

J Nat Prod. 2003 Jun;66(6):851-4. doi: 10.1021/np020568g.

Abstract

Phytochemical investigation of the ethanol extract of the leaves of Ligustrum robustum, monitored by a bioassay involving the hemolysis of red blood cells induced by 2,2'-azo-bis(2-amidinopropane) dihydrochloride, led to the isolation of three new glycosides, ligurobustosides M (1), N (2), and O (3), along with 10 known ones, osmanthuside B (4), osmanthuside B6 (5), acteoside (6), ligupurpuroside A (7), ligupurpuroside B (8), ligurobustoside C (9), ligurobustoside E (10), ligurobustoside I (11), cosmosiin (12), and rhoifolin (13). The structures of the new compounds were elucidated by spectroscopic methods. Seven of the glycosides showed stronger antioxidant effects than the standard, trolox.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antioxidants / chemistry
  • Antioxidants / isolation & purification*
  • Antioxidants / pharmacology
  • Chromans / pharmacology
  • Drugs, Chinese Herbal / chemistry
  • Drugs, Chinese Herbal / isolation & purification*
  • Drugs, Chinese Herbal / pharmacology
  • Erythrocytes / drug effects
  • Glycosides / chemistry
  • Glycosides / isolation & purification*
  • Glycosides / pharmacology
  • Hemolysis / drug effects
  • Ligustrum / chemistry*
  • Molecular Structure
  • Plant Leaves / chemistry
  • Plants, Medicinal / chemistry*
  • Rats

Substances

  • Antioxidants
  • Chromans
  • Drugs, Chinese Herbal
  • Glycosides
  • ligurobustoside M
  • ligurobustoside N
  • ligurobustoside O
  • 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid