Isolation and identification of phenolic compounds from Hypericum richeri Vill. and their antioxidant capacity.

The chemical composition and free radical scavenging properties of the MeOH extract of Hypericum richeri and its subsequent CHCl(3), n-BuOH, EtOAc and aqueous extracts were investigated. Four quercetin-3-O-glycosides, three myricetin-3-O-glycosides, 3-O- and 5-O-caffeoylquinic acid, quercetin, I3,II8-biapigenin, pseudohypericin and hypericin were identified… (More)