Design, synthesis and insecticidal activities of novel 1-substituted-5-(trifluoromethyl)-1 H -pyrazole-4-carboxamide derivatives
作者:Zhi-Bing Wu、Xiang Zhou、Yi-Qiang Ye、Pei-Yi Wang、Song Yang
DOI:10.1016/j.cclet.2016.06.010
日期:2017.1
exhibited good insecticidal activities against lepidopteran pests, such as Plutella xylostella, Mythimna separate, Heliothis armigera, and Ostrinia nubilalis. Some title compounds also elicited broad-spectrum insecticidal activities against dipterous insects including Culex pipiens pallens after altering the amide position. Similar to pyrazole-5-carboxamide analogues, compounds 6b and 6e showed 100%
摘要通过将酰胺键置于吡唑环的4-位上,合成了一系列新颖的5-(三氟甲基)-1H-吡唑-4-羧酰胺衍生物(6a-6n,7a,7b和8a-8f)。这些衍生物不同于在吡唑环的5-位具有酰胺键的氯金腈类似物的结构。初步的生物测定结果表明,一些标题化合物对鳞翅目害虫表现出良好的杀虫活性,例如小菜蛾,粘粒分离虫,棉铃虫和马齿Ost。在改变酰胺位置后,一些标题化合物还引发了对包括昆虫淡色库蚊(Culex pipiens pallens)在内的二倍体昆虫的广谱杀虫活性。与吡唑-5-羧酰胺类似物相似,化合物6b和6e对小菜蛾P. xylostella具有100%的杀虫活性。pipiens pallens和M.分别以200、2和200μg/ mL的浓度分离。该发现表明5-(三氟甲基)-1H-吡唑-4-羧酰胺衍生物是用于控制农业害虫的潜在替代杀虫剂。