Platelet activating factor (PAF) is a highly potent endogenous phospholipid mediator, involved in various inflammatory and cardiovascular disorders. As part of a research program dealing with PAF inhibitors isolated from Piper plant species, we have isolated kadsurenone (I), denudatin B (II), and
In a continuing search for PAF antagonists, five benzofuran neolignans have been isolated from the aerial part of Piper kadsura (Choisy) Ohwi, a Chinese traditional drug used for the treatment of inflammation and rheumatic conditions. The structure determination was based upon spectroscopic