Abstract
In the continuing study of antifeedant compounds in Protium javanicum Burm. f. against Coptotermes formosanus Shiraki, 6-desacetylnimbin (1), quercitrin (2) and myricitrin (3) were isolated from P. javanicum extract. All compounds were characterised by NMR and MS. Furthermore, the structure of 6-desacetylnimbin was confirmed by X-ray crystallography. The antifeedant activity was evaluated with no-choice feeding tests. At a dose of 0.5 mg, 6-desacetylnimbin exhibited the highest antifeedant activity among the isolates.
MeSH terms
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Animals
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Burseraceae / chemistry*
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Crystallography, X-Ray
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Diterpenes / chemistry
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Diterpenes / pharmacology
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Feeding Behavior / drug effects
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Flavonoids / chemistry
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Flavonoids / pharmacology
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Insecticides / chemistry*
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Insecticides / pharmacology*
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Isoptera / drug effects*
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Isoptera / physiology
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Plant Extracts / chemistry*
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Plant Extracts / pharmacology*
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Quercetin / analogs & derivatives
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Quercetin / chemistry
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Quercetin / pharmacology
Substances
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6-desacetylnimbin
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Diterpenes
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Flavonoids
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Insecticides
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Plant Extracts
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quercitrin
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myricitrin
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Quercetin