Insect Antifeedants, Pterocarpans and Pterocarpol, in Heartwood of Pterocarpus macrocarpus Kruz.
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- MORIMOTO Masanori
- Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University
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- FUKUMOTO Hiromi
- Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University
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- HIRATANI Masaru
- Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University
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- CHAVASIRI Warinthorn
- Department of Chemistry, Faculty of Science, Chulalongkorn University
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- KOMAI Koichiro
- Department of Agricultural Chemistry, Faculty of Agriculture, Kinki University
Bibliographic Information
- Other Title
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- Insect Antifeedants, Pterocarpans and Pterocarpol, in Heartwood of<i>Pterocarpus macrocarpus</i>Kruz.
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Abstract
The insect antifeedant activities of pterocarpans and a sesquiterpene alcohol from the dichloromethane extract of Pterocarpus macrocarpus Kruz. (Leguminosae) were evaluated against the common cutworm, Spodoptera litura F. (Noctuidae), and the subterranean termite, Reticulitermes speratus (Kolbe)(Rhinotermitidae). Three pterocarpans, (−)-homopterocarpin (1), (−)-pterocarpin (2), and (−)-hydroxyhomopterocarpin (3) and the sesquiterpene alcohol, (+)-pterocarpol (5), were isolated from the dichloromethane extract of the heartwood of P. macrocarpus under guidance by a biological assay. Among these natural products, the most active insect antifeedant against both S. litura and R. speratus was 1. On the other hand, sesquiterpene alcohol 5 showed less insect antifeedant activity than the other pterocarpans against both insect species. While its methylated derivative, (−)-methoxyhomopterocarpin (4), showed high biological activity, 3 showed less insect antifeedant activity in this study. Interestingly, racemic 1 did not show insect antifeedant activity against S. litura. However, all of the test pterocarpans and isoflavones showed antifeedant activity against the test termites. Additionally, since these compounds were major constituents of P. macrocarpus, these antifeedant phenolics may act as chemical defense factors in this tree. In Thailand, lumber made from this tree is used to make furniture and in building construction due to its resistance to termite attack.
Journal
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 70 (8), 1864-1868, 2006
Japan Society for Bioscience, Biotechnology, and Agrochemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390282681456264192
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- NII Article ID
- 10018527994
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- NII Book ID
- AA10824164
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- ISSN
- 13476947
- 09168451
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- NDL BIB ID
- 8040170
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed