Abstract

In this work, we describe the insecticidal activity against Spodoptera frugiperda of flavanone derivatives (naringin, naringenin and hesperidin) complexed to copper (II). For the assays, the compounds were incorporated into an artificial diet and offered to S. frugiperda during its larval period. The duration of larval and pupal phases, the weight of pupae and the percentage of dead insects at the end of the larval phase were evaluated. Among the tested compounds, the free flavanones 1 and 3 and the complexes 4 and 6 showed a shortening of the larval phase when compared to the control. Complex 9 showed the highest toxicity, with 96.66% larval mortality. This is the first report on the insecticidal activity of the Cu²⁺ complexes of the flavanones naringin, naringenin and hesperidin.

摘要

在这项工作中，我们描述了与铜 (II) 复合的黄烷酮衍生物（柚皮苷、柚皮素和橙皮苷）对草地贪夜蛾的杀虫活性。对于测定，这些化合物被掺入人工饲料中，并在S. frugiperda的幼虫期提供给它。评估了幼虫期和蛹期的持续时间、蛹的重量和幼虫期末期死亡昆虫的百分比。在测试的化合物中，与对照相比，游离黄烷酮1和3以及配合物4和6显示出幼虫期的缩短。综合体9显示出最高的毒性，幼虫死亡率为 96.66%。这是关于黄烷酮柚皮苷、柚皮苷和橙皮苷的Cu ²⁺配合物的杀虫活性的首次报道。