Insect Antifeedants, Pterocarpans and Pterocarpol, in Heartwood of Pterocarpus macrocarpus Kruz.

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The insect antifeedant activities of pterocarpans and a sesquiterpene alcohol from the dichloromethane extract of <I>Pterocarpus macrocarpus</I> Kruz. (Leguminosae) were evaluated against the common cutworm, <I>Spodoptera litura</I> F. (Noctuidae), and the subterranean termite, <I>Reticulitermes speratus</I> (Kolbe)(Rhinotermitidae). Three pterocarpans, (−)-homopterocarpin (<B>1</B>), (−)-pterocarpin (<B>2</B>), and (−)-hydroxyhomopterocarpin (<B>3</B>) and the sesquiterpene alcohol, (+)-pterocarpol (<B>5</B>), were isolated from the dichloromethane extract of the heartwood of <I>P. macrocarpus</I> under guidance by a biological assay. Among these natural products, the most active insect antifeedant against both <I>S. litura</I> and <I>R. speratus</I> was <B>1</B>. On the other hand, sesquiterpene alcohol <B>5</B> showed less insect antifeedant activity than the other pterocarpans against both insect species. While its methylated derivative, (−)-methoxyhomopterocarpin (<B>4</B>), showed high biological activity, <B>3</B> showed less insect antifeedant activity in this study. Interestingly, racemic <B>1</B> did not show insect antifeedant activity against <I>S. litura</I>. However, all of the test pterocarpans and isoflavones showed antifeedant activity against the test termites. Additionally, since these compounds were major constituents of <I>P. macrocarpus</I>, 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.

収録刊行物

  • Bioscience, biotechnology, and biochemistry  

    Bioscience, biotechnology, and biochemistry 70(8), 1864-1868, 2006-08-23 

    Japan Society for Bioscience, Biotechnology, and Agrochemistry

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各種コード

  • NII論文ID(NAID)
    10018527994
  • NII書誌ID(NCID)
    AA10824164
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09168451
  • NDL 記事登録ID
    8040170
  • NDL 雑誌分類
    ZR7(科学技術--農林水産--農産) // ZR2(科学技術--生物学--生化学) // ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-G223
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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