Prenylated arylbenzofuran derivatives from Morus mesozygia with antioxidant activity

Five prenylated arylbenzofurans, moracin Q-U, were isolated from Morus mesozygia (Moraceae). Their structures were elucidated on the basis of spectroscopic evidence. Along with these compounds, 3β-acetoxyurs-12-en-11-one, marsformoxide, moracin C, moracin M, moracin K, artocarpesin, aycloartocarpesin, morachalcone A were also isolated. Four of the five compounds, (Moracin R-U) displayed potent antioxidant activity.