Abstract

Three insecticidal sesquiterpene pyridine alkaloids with a β-dihydroagarofuran sesquiterpene skeleton, euoverrine A ( 1 ), B ( 2 ), and euophelline ( 3 ), and a known compound, euojaponine C ( 4 ), were isolated from the root bark of Euonymus verrucosides, E. fortunei and E. phellomana by bioassay-guided fractionation. Their chemical structures were elucidated mainly by analyses NMR and MS spectral data.

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