Design, Synthesis, and Insecticidal Activity of Novel Doramectin Derivatives Containing Acylurea and Acylthiourea Based on Hydrogen Bonding
作者:Qi Zhang、Yao Cheng、Cheng Zheng、Ping Bai、Jian Yang、Xiaoxia Lu
DOI:10.1021/acs.jafc.0c00230
日期:2020.5.27
investigation on the insecticidal activities of several doramectin derivatives preliminarily revealed that the presence of hydrogen bonds at the C4″ position of the molecule with target protein γ-aminobutyric acid (GABA) receptor was crucial for retaining high insecticidal activity. As a continuation of our research work on the development of new insecticides, two series of novel acylurea and acylthiourea
我们最近对几种多拉菌素衍生物的杀虫活性的研究初步表明,在具有目标蛋白γ-氨基丁酸(GABA)受体的分子的C4''位置存在氢键对于保持高杀虫活性至关重要。作为我们对新型杀虫剂开发的研究工作的继续,设计并合成了两个系列的新型酰基脲和酰基硫脲多拉菌素衍生物。生物测定结果表明,在我们的实验室中,新合成的化合物(5o,5t和6t)对小菜蛾,东方粘虫和玉米bore的杀虫活性高于对照化合物doramectin,市售阿维菌素,敌百虫和铅化合物3g。特别,化合物5t被确定为最有前景的小菜蛾杀虫剂,在低浓度12.50 mg / L时最终死亡率为80.00%,其效力比母体多拉菌素高约7.75倍(LC50值为48.1547 mg / L ),效力比市售阿维菌素(LC50值为40.5507 mg / L)高6.52倍,效力比化合物3g(LC50值为24.7742 mg / L)高3.98倍。此外,分子对接模拟显示化合物5t(2