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Chemical structures of polyphenolic compounds. Curcumin (1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione); genistein (4′,5,7-trihydroxyisoflavone); EGCG (2 R,3 R)-3′,4′,5,5′,7-pentahydroxyflavan-3-yl 3,4,5-trihydroxybenzoate); quercetin (3,3′,4′,5,7-pentahydroxyflavone); resveratrol (3,5,4′-trihydroxystilbene).
