Structure-activity Relationship for the Insect Antifeedant Activity of Benzofuran Derivatives
スポンサーリンク
概要
- 論文の詳細を見る
Coumaran (2,3-dihydrobenzofuran), a secondary metabolite of Cyperus nipponicus, inhibits the feeding of polyphagous insects. This secondary metabolite is regarded as one of the defensive systems of the Cyperaceae. A number of naturally occurring benzofurans that differ in their substitution pattern and oxidation state have been investigated for their ability to inhibit insect feeding by a bioassay with the common cutworm (Spodoptera litura F. Noctuidae) that applies the leaf disk method. The evaluation of the antifeedant activity of each test compound used the ED_<50> value based on the dose-response curve that was calculated with the probit method. The 2,3-dihydrobenzofuran derivative, 7-acetyl-4,6-dimethoxy-2-isopropenyl-2,3-dihydrobenzofuran, had an ED_<50> value of 1.3μg (5.4×10^<-9> mol)/cm^2 against the common cutworm. The introduction of methoxy and acetyl groups increased the insect antifeedant activity. Furthermore, the insect antifeedant activity increased with decreasing lipophilicity of the test compounds.
- 1999-05-23
著者
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Komai Koichiro
Department Of Agricultural Chemistry Faculty Of Agriculture Kinki University
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MORIMOTO Masanori
Department of Applied Biological Chemistry, School of Agriculture, Kinki University
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URAKAWA Masamitsu
Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University
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FUJITAKA Tatsuo
Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University
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Morimoto Masanori
Department Of Agricultural Chemistry Faculty Of Agriculture Kinki University
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Fujitaka Tatsuo
Department Of Agricultural Chemistry Faculty Of Agriculture Kinki University
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Urakawa Masamitsu
Department Of Agricultural Chemistry Faculty Of Agriculture Kinki University
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