Novel Insecticides from Alkylated and Acylated Derivatives of Thymol and Eugenol for the Control of Plutella xylostella (Lepidoptera: Plutellidae)
作者:Claudio da Camara、Bogdan Doboszewski、João de Melo、Alexander Nazarenko、Rodrigo dos Santos、Marcilio Moraes
DOI:10.21577/0103-5053.20210137
日期:——
essential oil, thymol and eugenol, stand up as possible novel agents to control this pest. In this work a series of alkylated and acylated derivatives of eugenol and thymol were synthesized and screened for antifeedant, larvicidal and ovicidal activities against P. xylostella. The results of biological activities assays suggest that the novel 1,1’-[1,8-octanediylbis(oxy)]-bis(4-allyl-2-methoxy-benzene)
木虱(Plutella xylostella)对西兰花、大白菜、卷心菜和花椰菜的生产造成严重危害。对木虱的防治主要使用商业杀虫剂,这甚至导致了抗药性种群的出现。在不同植物精油中发现的两种容易获得的天然产物,百里酚和丁香酚,可能成为控制这种害虫的新型药剂。在这项工作中,合成了一系列丁香酚和百里酚的烷基化和酰化衍生物,并对其进行了筛选,以检测其对木虱的抗药性、杀幼虫剂和杀卵剂活性。生物活性测定结果表明,新型 1,1'-[1,8-辛二基双(氧基)]-双(4-烯丙基-2-甲氧基苯)(5)在杀幼虫剂试验中毒性最强。化合物 1-丁氧基-2-异丙基-5-甲基苯(8)和己二酸 1,6-双(2-异丙基-5-甲基苯基)酯(10)在杀卵试验中毒性最强。化合物 8 的杀卵活性最强。所获得的大多数化合物的活性都高于市售的杀虫剂溴氰菊酯和氮芥。