Bioscience, Biotechnology and Biochemistry 2004-Oct
Synthesis and antioxidative activity of 3',4',6,7-tetrahydroxyaurone, a metabolite of Bidens frondosa.
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概要
3',4',6,7-Tetrahydroxyaurone (1a), an aurone isolated from Bidens frondosa, and five analogues (1b-1f) were synthesized from pyrogallol in three steps. The antioxidative activity of 1a-1f was determined by the superoxide free radical and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging methods.