A lignan with diverse biological activities; induces cell cycle arrest at the G0/G1 phase and inhibits growth of T47D and MDA-MB-231 breast cancer cells at 100 μM; prevents glutamate-induced cytotoxicity, inhibits production of NO and ROS, and preserves the mitochondrial membrane potential in isolated rat cortical cells at 10 and 100 μM; reduces cisplatin-induced apoptosis in HK-2 cells; reverses scopolamine-induced impairment of spatial memory and the passive avoidance response in rats at 1 and 10 mg/kg; enhances oxotremorine-induced tremors in mice; reduces serum levels of IgE, IgG1, IL-4, and IFN-γ in an ovalbumin-sensitized mouse model of allergy at 10 mg/kg