期刊
BIOORGANIC & MEDICINAL CHEMISTRY
卷 17, 期 6, 页码 2360-2365出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2009.02.014
关键词
Resveratrol; Antioxidant; Galvinoxyl; Lipid peroxidation; Copper; Cytotoxicity
资金
- National Natural Science Foundation of China [20502010, 20621091]
- Program for New Century Excellent Talents in University [NCET-06-0906]
Resveratrol (3,5,4'-trans-trihydroxystibene) is a natural phytoalexin present in grapes and red wine, which possesses a variety of biological activities including antioxidant activity. In order to find more active antioxidant with resveratrol as the lead compound we synthesized 4,4'-dihydroxy-trans-stilbene (4,4'-DHS). The antioxidant activities of resveratrol and 4,4'-DHS were evaluated by the reaction kinetics with galvinoxyl radical or Cu(II) ions, and the inhibition effects against free-radical-induced peroxidation of human erythrocyte ghosts. It was found that 4,4'-DHS exhibits remarkably higher antioxidant activity than resveratrol. The oxidative products of resveratrol and 4,4'-DHS in the presence of Cu(II) in acetonitrile were identified as the dihydrofuran dimers by spectroscopic method, and the antioxidant mechanism for 4,4'-DHS was proposed. In addition, 4,4'-DHS exhibits remarkably higher cytotoxicity against human promyelocytic leukemia (HL-60) cells than resveratrol. (C) 2009 Elsevier Ltd. All rights reserved.
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