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Abstract A new prenylated flavonol glycoside (1) was isolated from a 95% methanol extract of the dried and powdered aerial parts of Epimedium koreanum Nakai (Herba Epimedii), along with seven… Click to show full abstract
Abstract A new prenylated flavonol glycoside (1) was isolated from a 95% methanol extract of the dried and powdered aerial parts of Epimedium koreanum Nakai (Herba Epimedii), along with seven previously known flavonoids (2–8). The chemical structure of the new compound (1) was established to be 5-hydroxy-4′-methoxy-8-(2-hydroxy-3-methyl-3-butenyl)flavone 3-O-α-l-rhamnopyranosyl-7-O-β-D-gluco pyranoside on the basis of spectroscopic methods. The antioxidant activities of these compounds were determined by the DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging assay and kaempferitrin (8) showed a high reactivity with DPPH.
Journal Title: Natural Product Research
Year Published: 2017
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