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Antiparasitic compounds from East African plants: Isolation and biological activity of anonaine, matricarianol, canthin-6-one and caryophyllene oxide
Published online by Cambridge University Press: 19 September 2011
Abstract
Five natural compounds possessing antiparasitic activity were isolated from East African plants and tested, together with some semisynthetic derivatives, against micro-organisms and arthropods of agricultural interest. Anonaine (1), from Annona squamosa, canthin-6-one(8) and 5-methoxycanthin-6-one (9), from Fagaropsis angolensis, showed fungicidal activity. E,Z-matricarianol (4), from Hoehnelia vernonioides was fungicidal, Insecticidal and acarlcldal. Caryophyllene oxide (12), isolated from Uvaria sp., turned out to be insecticidal and antifeedant. Canthin-6-one (8) and its dihydroderivative 11 were the most effective antimicrobial compounds tested. The possibility ofusing some of the isolated compounds as leads for new synthetic chemicals is discussed.
Résumé
Cinq produits naturels ayant de l'activité antiparasitaire étaient isolés de plantes de1' Afrique Orientale et evalué, avec quelques dérivés semisynthétiques, contre des microrganismes et des arthropodes d'intérêt agricole. L'anonaine (1), isolée de 1'Annona squamosa, le cantin-6-one (8) et le 5-methoxycantin-6-one (9), isolés de la Fagaropsis angolensis, montraient de l'activité fongicide. L' E, Z-matricarianol (4), isolé de l'Hoehnelia vernonioides, se revelait fongicide, insectcide et acarcide. L'époxidede B-caryophylléne (12), isolé de 1' Uvaria sp., se réélalt insectcide et antiappetant Le cantin-6-one (8) et son dihldroderivé 11 étaient les plus actifs parmi les produits antimcrobiens évalues. On discute la possibilité d'utiliser quelques-uns des produits isolés commesouches de nouveaux produits synthétiques.
Keywords
- Type
- Research Articles
- Information
- International Journal of Tropical Insect Science , Volume 14 , Issue 1 , February 1993 , pp. 93 - 99
- Copyright
- Copyright © ICIPE 1993
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