Fangzhou Xu, Yanyan Wang, Yunying Zhu
Feb 15, 2017
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Phosphorus, Sulfur, and Silicon and the Related Elements
Abstract
GRAPHICAL ABSTRACT ABSTRACT A series of novel sulfone derivatives containing a [1,2,4]triazolo[4,3-a]pyridine moiety was synthesized and characterized via 1H NMR, 13C NMR, IR, and elemental analyses. Bioassay results indicated some of the derivatives displayed good antifungal activities and insecticidal activity. The inhibition rates of 8-chloro-3-((2,6-difluorobenzyl)sulfonyl)-[1,2,4]triazolo[4,3-a]pyridine against Rhizotonia erealis and Helminthosporium maydis were 78.6% and 76.4% activities at 50 μg mL−1, respectively. And compound 8-chloro-3-(((6-chloropyridin-3-yl)methyl)sulfonyl)-[1,2,4]triazolo[4,3-a]pyridine showed >95% mortality at 500 μg mL−1 and >65% mortality at 200 μg mL−1 against Plutella xylostella, respectively. As well as 8-chloro-3-(((6-chloropyridin-3-yl)methyl)sulfonyl)-[1,2,4]triazolo[4,3-a]pyridine displayed >90% mortality at 500 μg mL−1 against Helicoverpa armigera. A preliminary structure activity relationship (SAR) is discussed.