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Resveratrol and its analogs, six other polyhydroxystilbenes, were synthesized and their antioxidative activities were evaluated in vitro by determination of the levels of malondialdehyde and hydrogen peroxide. Results clearly exhibited that resveratrol and its analogs had various potencies in inhibiting lipid peroxidation in rat brain, kidney, and liver homogenates and rat erythrocyte hemolysis. Several polyhydroxystilbenes were found to be more active than resveratrol in these models, and structure-activity relationship studies on polyhydroxystilbenes are described in this paper.
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