Synthesis and Biological Activity Evaluation of Novel β-Substituted Nitromethylene Neonicotinoid Analogues
作者:Baozhu Wang、Jiagao Cheng、Zhiping Xu、Xiaoyong Xu、Xusheng Shao、Zhong Li
DOI:10.3390/molecules170910014
日期:——
The structure-based design and synthesis of a series of novel neonicotinoid analogues are described. The novel neonicotinoid analogues were designed based upon the reaction of enamine derivatives with electron-withdrawing β-substituents with electrophilic thiocyanogen reagents. These compounds were characterized by spectroscopic methods. Bioassays indicated that some of the synthesized compounds exhibited excellent bioactivity against cowpea aphids (Aphis craccivora). The LC50 values of compounds 7, 9, 12, 13, 15, 17, 19, 20 and commercial imidacloprid were 0.01567, 0.00974, 0.02494, 0.01893, 0.02677, 0.01778, 0.0220, 0.02447 and 0.03502 mmol L−1, respectively, which suggested that they could be used as leads for future development of new insecticides.
本文介绍了基于结构设计和合成一系列新型新烟碱类似物的方法。这些新型新烟碱类似物的设计基于烯胺衍生物与亲电性硫氰基试剂的反应,烯胺衍生物具有吸电子的β-取代基。这些化合物通过光谱方法进行了表征。生物测定表明,合成的一些化合物对豇豆蚜虫(Aphis craccivora)具有很好的生物活性。化合物 7、9、12、13、15、17、19、20 和商用吡虫啉的 LC50 值分别为 0.01567、0.00974、0.02494、0.01893、0.02677、0.01778、0.0220、0.02447 和 0.03502 mmol L-1,这表明它们可作为未来开发新型杀虫剂的线索。