Synthesis and Biological Evaluation of Novel Anthranilic Diamides Containing N-H/CH₃-1H-Pyrazole

Abstract

In order to systematically study the structure-activity relationship of anthranilic diamides and develop insecticides with simple structure and high efficiency, a series of novel anthranilic diamides containing N-H/CH₃-1H-pyrazole was designed and synthesized. Their chemical structures were characterized by ¹H NMR spectra, high resolution mass spectrometry(HRMS) or ¹³C NMR spectra. The preliminary bioassay results indicated that all title compounds displayed moderate insecticidal activity against oriental armyworm(Mythimna separata) at 200 mg/L and fungicidal activities against six kinds of fungi at 50 mg/L, especially compound 5i showed 50% insecticidal activity at 25 mg/L. In addition, some compounds exhibited certain antitumor activities. It was demonstrated that the introduction of CH₃ group into pyrazole ring was superior to H for the insecticidal activity.

Keywords

Anthranilic diamide / Insecticidal activity / Fungicidal activity / Antitumor activity

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