Synthesis and Biological Activity of Benzamides Substituted with Pyridine-Linked 1,2,4-Oxadiazole.
Molecules
; 25(15)2020 Jul 31.
Article
em En
| MEDLINE
| ID: mdl-32752024
ABSTRACT
To find pesticidal lead compounds with high activity, a series of novel benzamides substituted with pyridine-linked 1,2,4-oxadiazole were designed by bioisosterism, and synthesized easily via esterification, cyanation, cyclization and aminolysis reactions. The structures of the target compounds were confirmed by 1H-NMR, 13C-NMR and HRMS. The preliminary bioassay showed that most compounds had good larvicidal activities against mosquito larvae at 10 mg/L, especially compound 7a, with a larvicidal activity as high as 100%, and even at 1 mg/L was still 40%; at 50 mg/L, all the target compounds showed good fungicidal activities against the eight tested fungi. Moreover, compound 7h exhibited better inhibitory activity (90.5%) than fluxapyroxad (63.6%) against Botrytis cinereal. Therefore, this type of compound can be further studied.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Oxidiazóis
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Piridinas
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Benzamidas
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Inseticidas
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article