Chemical compositions and bioefficacy againstSpodoptera lituraof essential oil and ethyl acetate fraction fromMyoporum bontioidesleaves

Essential oil of fresh leaves from Myoporum bontioides A. Gray was analyzed by GC–MS. A total of nine components were identified in this volatile oil with epingaione (81.52 %) as a main constituent. Three flavonoids named isorhamnetin (1), 3,4’-dimethoxy-3’,5,7-trihydroxyflavone (2) and luteolin (3) were isolated from the ethyl acetate fraction of Myoporum bontioides A. Gray leaves. Their structures were elucidated on the basis of spectroscopic...