Add time:08/10/2019         Source:sciencedirect.com

To cope with developing pest resistance and ecological problems associated with conventional insecticides and to search for potent insecticides targeting at ryanodine receptor (RyR), a series of novel anthranilic diamides containing N-substitued nitrophenylpyrazole were designed and synthesized. The insecticidal activities of target compounds against oriental armyworm (Mythimna separata) and diamondback moth (Plutella xylostella) were evaluated in our greenhouse by bio-assay tests and the relative structure–activity relationships were briefly discussed. Most compounds exhibited moderate to high activities, in which G7 and K5 showed high activity against oriental armyworm and K2 and K4 against diamondback moth even better than the control-chlorantraniliprole. The calcium imaging technique was used to investigate the effects of several typical title compounds on the [Ca2+]i, especially the effects of G7 on the intracellular calcium ion concentration ([Ca2+]i) in neurons, which indicated that some title compounds were potent activators of the RyR.

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