Insecticidal activity of daphnane diterpenes from Lasiosiphon kraussianus (Meisn) (Thymelaeaceae) roots |
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| Authors: | Adil E
A Bala Robert Delorme Albert Kollmann Lucien Kerhoas Jacques Einhorn Paul-Henri Ducrot Danielle Aug |
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| Abstract: | A methanol extract of roots of Lasiosiphon kraussianus (Meisn) (Thymelaeaceae) showed potent insecticidal activity against Aphis gossypii (Glov) and Drosophila melanogaster (Meig). Bioassay-driven fractionation of this extract led to the isolation and characterisation of two known daphnane diterpenoids: Excoecaria toxin (1) and wikstrotoxin D (2) . The two natural products were inferior to methomyl in activity against A gossypii and Myzus persicae (Sulz) in contact assays but were superior in ingestion assays against D melanogaster. This is the first report on insecticidal activities of compounds 1 and 2 . AChE was insensitive to the two natural products. © 1999 Society of Chemical Industry |
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| Keywords: | Lasiosiphon kraussianus daphnane insecticidal activity |
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