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Structure-activity relationships of phenylpropanoids as antifeedants for the pine weevil Hylobius abietis
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.
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2008 (English)In: Journal of Chemical Ecology, ISSN 0098-0331, E-ISSN 1573-1561, Vol. 34, no 3, 339-352 p.Article in journal (Refereed) Published
Abstract [en]

Ethyl cinnamate has been isolated from the bark of Pinus contorta in the search for antifeedants for the pine weevil, Hylobius abietis. Based on this lead compound, a number of structurally related compounds were synthesized and tested. The usability of the Topliss scheme, a flow diagram previously used in numerous structure-activity relationship (SAR) studies, was evaluated in an attempt to find the most potent antifeedants. The scheme was initially followed stepwise; subsequently, all compounds found in the scheme were compared. In total, 51 phenylpropanoids were tested and analyzed for SARs by using arguments from the field of medicinal chemistry (rational drug design). Individual Hansch parameters based on hydrophobicity, steric, and electronic properties were examined. The effects of position and numbers of substituents on the aromatic ring, the effects of conjugation in the molecules, and the effects of the properties of the parent alcohol part of the esters were also evaluated. It proved difficult to find strong SARs derived from single physicochemical descriptors, but our study led to numerous new, potent, phenylpropanoid antifeedants for the pine weevil. Among the most potent were methyl 3-phenylpropanoates monosubstituted with chloro, fluoro, or methyl groups and the 3,4-dichlorinated methyl 3-phenylpropanoate.

Place, publisher, year, edition, pages
2008. Vol. 34, no 3, 339-352 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:miun:diva-7513DOI: 10.1007/s10886-008-9435-1ISI: 000253975100007Scopus ID: 2-s2.0-45449104017OAI: oai:DiVA.org:miun-7513DiVA: diva2:127660
Available from: 2008-12-09 Created: 2008-12-09 Last updated: 2011-12-11Bibliographically approved

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Sunnerheim, Kerstin
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • de-DE
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  • nn-NO
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  • Other locale
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