Compositions and methods to control fungal pathogens

Details Compositions and methods to control fungal pathogens Compositions and methods to control fungal pathogens

A - Human Necessities

01

N

A01N 37/28 (2006.01) A01N 37/30 (2006.01) A01N 47/34 (2006.01) A01P 3/00 (2006.01) C07C 243/00 (2006.01) C07C 281/00 (2006.01)

Patent

CA 2756929

Disclosed herein are acylhydrazone and semicarbazones derivatives of aldehydes and ketones that may act to at-tract plant pathogenic zoospores and methods of using these compounds. These compounds include the compound according to Formula 1: wherein: X is selected from the group consisting of. (CH2)n, 1,3- phenylene and 1,4-phenylene; R1 is selected from the group consisting of iso-butyl, sec -butyl and tert-butyl- CH2; R2 is hydrogen or methyl; and n is equal to 0-25. Upon exposure to water, these compounds release aldehydes or ketones that may attract zoospores. These compounds can be combined with fungi-cides to form fungicidal formulations that are especially effective against oomycete producing fungal pathogens.

L'invention porte sur des dérivés acylhydrazones et sémicarbazones d'aldéhydes et de cétones qui peuvent servir à attirer des zoospores pathogènes de plantes et sur des procédés d'utilisation de ces composés. Ces composés incluent le composé selon la Formule 1 : dans laquelle : X est choisi dans le groupe constitué par : (CH2)n, 1, 3-phénylène et 1,4-phénylène ; R1 est choisi dans le groupe constitué par iso-butyle, sec-butyle et tert-butyle- CH2 ; R2 représente hydrogène ou méthyle ; et n est égal à 0 à 25. Lors d'une exposition à l'eau, ces composés libèrent des aldéhydes ou cétones qui peuvent attirer les zoospores. Ces composés peuvent être combinés à des fongicides pour former des formulations fongicides qui sont notamment efficaces contre des agents pathogènes fongiques produisant des oomycètes.

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