Department of Chemistry, Natural Products Laboratory, Federal University of São Carlos (UFSCar), 13565-905, São Carlos, SP, Brazil.
Federal Institute of Education, Science and Technology of Goias, Campus Anapolis, Avenida Pedro Ludovico, 75131-457, Anapolis, GO, Brazil.
Z Naturforsch C J Biosci. 2020 Oct 12;76(3-4):111-115. doi: 10.1515/znc-2020-0115. Print 2021 Mar 26.
The fall armyworm, , is a polyphagous pest that causes important damage in different regions of America and mainly affects corn crops in both tropical and subtropical areas. Currently, control relies on both transgenic plants and/or chemical pesticides. In this work, we describe insecticidal activity against the fall armyworm from a series of Mannich bases (), derived from 2-hydroxy-1,4-naphthoquinone (lawsone), substituted benzaldehydes, and two primary amines, and their Cu complexes (). The [Cu(L)] complexes were more effective in larval mortality compared to the free Mannich bases. Among the tested compounds, complex showed the highest toxicity, with 70.00% larval mortality.
秋粘虫，是一种多食性害虫，在美洲的不同地区造成严重危害，主要影响热带和亚热带地区的玉米作物。目前，控制方法依赖于转基因植物和/或化学农药。在这项工作中，我们描述了一系列曼尼希碱（）对秋粘虫的杀虫活性，这些曼尼希碱衍生自 2-羟基-1,4-萘醌（劳森）、取代苯甲醛和两种伯胺，以及它们的 Cu 配合物（）。与游离曼尼希碱相比，[Cu（L）]配合物在幼虫死亡率方面更有效。在所测试的化合物中，配合物显示出最高的毒性，幼虫死亡率为 70.00%。
