Antifeeding constituents of Phellodendron chinense fruit against Reticulitermes speratus were isolated and identified as N-methylflindersine and melianone, of which the former showed significant activity. Other compounds isolated from the fruit (namely niloticin, friedelin, phellochin and 4, 10-dimethylene-7-isopropyl-5(E)-cyclodecenol) showed no antifeeding activity.
