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