Antioxidative Glucosides from the Fruits of Ligustrum lucidum.

  • HE Zhen-Dan
    Departments of Biology and Chemistry and Institute of Chinese Medicine, The Chinese University of Hong Kong
  • BUT Paul Pui-Hay
    Departments of Biology and Chemistry and Institute of Chinese Medicine, The Chinese University of Hong Kong
  • CHAN Tak-Wah Dominic
    Departments of Biology and Chemistry and Institute of Chinese Medicine, The Chinese University of Hong Kong
  • DONG Hui
    Departments of Biology and Chemistry and Institute of Chinese Medicine, The Chinese University of Hong Kong
  • XU Hong-Xi
    Departments of Biology and Chemistry and Institute of Chinese Medicine, The Chinese University of Hong Kong
  • LAU Ching-Po
    Departments of Biology and Chemistry and Institute of Chinese Medicine, The Chinese University of Hong Kong
  • SUN Han-Dong
    Hong Kong and Kunming Institute of Botany, Academia Sinica

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抄録

The ethanol extract of the fruits of Ligustrum lucidum was shown to have inhibitory effects on the hemolysis of red blood cells induced by 2, 2′-azo-bis-(2-amidinopropane) dihydrochloride. Bioassay-guided analysis led to the isolation of ten secoiridoid glucosides. Two of them were new, lucidumosides C and D. Their structures were elucidated by spectroscopic methods. The other eight compounds were identified as oleoside dimethyl ester, ligustroside, oleuropein, nuezhenide, isonuezhenide, neonuezhenide, lucidumoside A and lucidumoside B. Five compounds, oleoside dimethyl ester, oleuropein, neonuezhenide, lucidumoside B and lucidumoside C, exhibited strong antioxidant effect against hemolysis of red blood cells induced by free radicals.

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