Phenylpropanoid acid esters from Korean propolis and their antioxidant activities

Bioorganic & Medicinal Chemistry Letters
2014.0

Abstract

Ten phenylpropanoic acid esters were isolated from an ethanolic extract of Korean propolis. Their structures were elucidated by spectroscopic methods including NMR and ESI-MS. Caffeic acid esters with catechol moiety exhibited significant ABTS and DPPH radical scavenging activity and protective effect against DNA damage by a Fenton reaction.

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