Multifunctionalised benzoxazinones in the systems Oryza sativa-Echinochloa crus-galli and Triticum aestivum-Avena fatua as natural-product-based herbicide leads

Pest Management Science
Francisco A MacíasDavid Marín

Abstract

Fifteen novel derivatives of D-DIBOA, including aromatic ring modifications and the addition of side chains in positions C-2 and N-4, had previously been synthesised and their phytotoxicity on standard target species (STS) evaluated. This strategy combined steric, electronic, solubility and lipophilicity requirements to achieve the maximum phytotoxic activity. An evaluation of the bioactivity of these compounds on the systems Oryza sativa-Echinochloa crus-galli and Triticum aestivum-Avena fatua is reported here. All compounds showed inhibition profiles on the two species Echinochloa crus-galli (L.) Beauv. and Avena fatua L. The most marked effects were caused by 6F-4Pr-D-DIBOA, 6F-4Val-D-DIBOA, 6Cl-4Pr-D-DIBOA and 6Cl-4Val-D-DIBOA. The IC(50) values for the systems Echinochloa crus-galli-Oryza sativa and Avena fatua-Triticum aestivum for all compounds were compared. The compound that showed the greatest selectivity for the system Echinochloa crus-galli-Oryza sativa was 8Cl-4Pr-D-DIBOA, which was 15 times more selective than the commercial herbicide propanil (Cotanil-35). With regard to the system Avena fatua-Triticum aestivum, the compounds that showed the highest selectivities were 8Cl-4Val-D-DIBOA and 6F-4Pr-D-DIBOA. The resu...Continue Reading

References

Dec 10, 1999·Journal of Agricultural and Food Chemistry·F A MacíasR F Velasco
May 26, 2005·Journal of Agricultural and Food Chemistry·Francisco A MacíasJosé M G Molinillo
Feb 10, 2006·The Laryngoscope·Dominic M CastellanoDaniel W Karakla
Dec 7, 2006·Journal of Agricultural and Food Chemistry·Francisco A MacíasJosé M G Molinillo
Dec 21, 2006·Journal of Agricultural and Food Chemistry·Francisco A MacíasJosé M G Molinillo
Oct 17, 2008·Journal of Agricultural and Food Chemistry·Francisco A MacíasJoão M De Siqueira
Dec 18, 2009·Journal of Agricultural and Food Chemistry·Francisco A MacíasRosa M Varela

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Citations

Jan 27, 2019·Pest Management Science·Francisco A MacíasJosé Mg Molinillo

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