生物活性: 1,6-Dihydro-4,7-epoxy-1-methoxy-3,4-methylenedioxy-6-oxo-3,8-lignan, a lignan derivative from the ethyl acetate soluble fraction of twigs of Magnolia denudate (Magnoliaceae), exhibits anti-platelet-activating factor (PAF) activity. PAF is a potent lipid mediator in inflammation and asthma.