Discovery of Trisubstituted <i>N</i>-Phenylpyrazole Containing Diamides with Improved Insecticidal Activity
作者:Jinzhou Ren、Xia Ji、Jin Zhang、Zhenwu Yu、Xinyuan Wang、Lixia Xiong、Na Yang、Liangfu Tang、Zhengming Li、Zhijin Fan
DOI:10.1021/acs.jafc.3c08759
日期:2024.4.10
of this 4-fluorophenyl group by introducing a halogen atom at position 2 and an electron-withdrawing group (e.g., iodine, cyano, and trifluoromethyl) at position 5 led to 34 compounds with good insecticidal efficacy against Mythimna separata, Plutella xylostella, and Spodoptera frugiperda. Among them, compound IV f against M. separata showed potency comparable to that of chlorantraniliprole. IV p against
为了增加杀虫剂的结构多样性并满足有效的昆虫综合管理的需要,基于先前建立的三维定量构效关系(3D-QSAR)模型对氯虫苯甲酰胺进行了结构修饰。氯虫苯甲酰胺结构中的吡啶基部分被4-氟苯基取代。通过在2位引入卤素原子和在5位引入吸电子基团(例如碘、氰基和三氟甲基)对该4-氟苯基进行进一步修饰,得到34种对粘虫、小菜蛾、小菜蛾、和草地贪夜蛾。其中,化合物IV f对M. separata显示出与氯虫苯甲酰胺相当的效力。 IV p对抗小菜蛾的效力比氯虫苯甲酰胺高 4.5 倍。此外, IV d和氯虫苯甲酰胺对草地贪夜蛾表现出相当的效力。转录组分析表明化合物IV f的分子靶点是兰尼碱受体。进一步进行分子对接,验证其对抗性小菜蛾的作用方式和杀虫活性。