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April 3, 2004Journal of Agricultural and Food ChemistryOpen Access

Chemical Basis for the Antifeedant Activity of Natural Hydroxamic Acids and Related Compounds

Héctor R. Bravo Sylvia V. Copaja Víctor H. Argandoña

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Abstract

Natural hydroxamic acids and related compounds derived from the 1,4-benzoxazin-3-one structure show antifeedant activity against the aphid Rhopalosiphum padi. This antifeeding activity is based on the electrophilic character of the hydroxamic acid function, the opening of the hemiacetal function and the lipophilic character of the molecule. In addition, the antifeedant activity of the aqueous extracts of different tissues of Acanthus mollis (Acanthaceae) was determined. The activity observed is attributed to the presence of 2,4-dihydroxy-1,4-benzoxazin-3-one in the extracts.

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Bravo et al. (2004) studied this question.

synapsesocial.com/papers/6ab248ec84f9ac42865f8b9f https://doi.org/10.1021/jf030766t

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