A series of naturally occurring genistein ( ) and biochanin A ( ) compounds and their analogues were synthesized from phloroglucinol. The structures of all the synthesized compounds were established by the combined use of 1 HNMR, 13 CNMR, IR spectral data, and mass spectrometry; their antioxidant activities were investigated. Most of the synthesized compounds show moderate-to-high activity; only two compounds exhibit no significant activity.
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