Antioxidant activity of prenylated hydroquinone and benzoic acid derivatives from Piper crassinervium Kunth

A prenylated hydroquinone derivative was isolated from leaves of Piper crassinervium. Its in vitro antioxidant capacity and other prenylated hydroquinones, 4-hydroxybenzoic acids, had their antioxidant activities evaluated using inhibition assays of luminol luminescence, DPPH, and lipoperoxidation.