Insect antifeedant terpenes,hot-tasting to humans |
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| Authors: | I Kubo I Ganjian |
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| Institution: | (1) Division of Entomology and Parasitology, College of Natural Resources, University of California, 94720 Berkeley, Cal., USA |
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| Abstract: | Summary Four dialdehyde sesquiterpenoids (1–4) isolated from East AfricanWarburgia plants exhibit powerful antifeeding activity for larvae of the armyworms,Spodoptera exempta andS. littoralis. The hotness of these sesquiterpenes is associated with this activity. The specific absolute stereochemistry of these antifeedants appears to govern the hotness of the taste.The authors are grateful to Proff. K. Nakanishi, A.S. Kende and T. Kubota for their interest and valuable discussion. Succulatal was provided by Dr. Y. Asakawa. This work was initiated during the stay of I.K. at the International Center of Insect Physiology and Ecology, Nairobi, Kenya. We also thank Mr A. Chapya for technical assistance. |
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