Larvicidal and Structure-Activity Studies of Natural Phenylpropanoids and Their Semisynthetic Derivatives against the Tobacco Armyworm<i>Spodoptera litura</i>(Fab.) (Lepidoptera: Noctuidae)
作者:Anu Bhardwaj、Dhananjay Kumar Tewary、Rakesh Kumar、Vinod Kumar、Arun Kumar Sinha、Adarsh Shanker
DOI:10.1002/cbdv.200800345
日期:2010.1
The larvicidal activity of 18 phenylpropanoids, 1-18, including phenylpropenoate, phenylpropenal, phenylpropene, and their semisynthetic analogues, were evaluated against the tobacco armyworm, Spodoptera litura (Fab.), to identify promising structures with insecticidal activity. Amongst various phenylpropanoids, isosafrole, a phenylpropene, showed the best activity, with an LC(50) value of 0.6 microg/leaf
评估了18个苯基丙烷(1-18)的杀幼虫活性(包括苯基丙酸酯,苯基丙烯醛,苯基丙烯及其半合成类似物)对烟草粘虫Spodoptera litura(Fab。)的杀虫活性,以鉴定具有杀虫活性的有前途的结构。在各种苯丙类化合物中,异黄酮(一种苯丙烯)表现出最好的活性,其LC(50)值为0.6微克/叶cm(2),其次是其氢化衍生物二氢黄樟脑(LC(50)= 2.7微克/叶cm(2 ))。按以下顺序观察到各种苯丙烯衍生物的整体杀幼虫活性:异黄樟脑(6)>二氢黄樟脑(16)>黄樟脑(12)>茴香脑(4)>甲基丁香酚(11)>丁香酚(13)>β-asarone( 8)>二氢asarone(18)>二氢茴香脑(15)。二氢黄樟脑可能是很有前途的化合物,尽管其杀幼虫活性低于异黄酮,但由于其稳定性和抗氧化降解性(由于去除了极活泼的烯键),与异黄酮相比具有更好的稳定性。这种结构-活性关系研究促进了从天然来源鉴定