Study on Biological Activity of New Compound SYP-260

SYP-260 is one of the novel pyrimidine structure chemicals.The biological activity of new compound SYP-260 was tested in this paper using different bioassay methods in the laboratory.Experimental results indicated that the values of median lethal concentration(LC50,72 h)of new compound SYP-260 against broad bean aphid,green peach aphid and cotton aphid were 0.1708,0.2455 and 0.2632 mg·L-1,respectively.The LC50 of new compound SYP-260 was 0.8892 mg·L-1 against adult mite and the ovicidal activity of new compound SYP-260 was 0.7166 mg·L-1.The LC50 of new compound SYP-260 was 22.1991,71.6915,79.6149 and 42.5698 mg·L-1 against oriental armyworm,diamondback moth,corn borer and beet armyworm,respectively.And at the concentration of 50 mg·L-1,the bioassay result showed that new compound SYP-260 could be absorbed by host plant roots.The temperature bioassay result indicated that new compound SYP-260 was a positive temperature coefficient chemical.So new compound SYP-260 had excellent biological activity against nine different insect targets,such as broad bean aphid,green peach aphid and carmine spider mite.Moreover,this new compound had systemic action,too.Therefore,new compound SYP-260 had good bioactivity against many kinds of insect targets with novel chemical structures.

杀虫剂四氯虫酰胺对美国白蛾的室内活性及田间药效评价

[目的]研究室内条件下四氯虫酰胺对美国白蛾的杀虫活性和田间四氯虫酰胺对美国白蛾的防治效果。[方法]室内活性和田间试验均采用喷雾法。[结果]室内结果表明:四氯虫酰胺对美国白蛾的LC_(50)值为0.4990mg/L,对照药剂氯虫苯甲酰胺的LC_(50)值为0.6163 mg/L;10%四氯虫酰胺悬浮剂在20 mg/L处理剂量下,对美国白蛾高龄幼虫的田间防治效果超过90%,与对照药剂20%氯虫苯甲酰胺悬浮剂差异不显著。[结论]四氯虫酰胺对美国白蛾防效良好,可在生产中推广应用。

新型杀虫剂Fluxametamide的合成与杀虫活性

[目的]Fluxametamide是由日产化学工业株式会社开发的新型异唑啉类杀虫剂,探索了其合成方法,并测试了其杀虫活性。[方法]以4-乙酰基-2-甲基苯甲酸和乙烯基丁基醚为起始原料制备了fluxametamide,并经核磁及高分辨质谱表征验证其结构。[结果]所述合成路线反应收率较高。室内杀虫活性测试结果表明:fluxametamide对鳞翅目害虫小菜蛾和黏虫具有较高的杀虫活性。

含哌啶结构的异唑啉类化合物的合成与杀虫活性研究

[目的]设计、合成一系列新型含有哌啶结构的异唑啉类化合物,以发现新的优良杀虫活性化合物。[方法]采用亚结构拼接原理设计合成含有哌啶基团的异唑啉类化合物。以4-乙酰基-2-甲基苯甲酸为起始原料,经9步反应合成目标化合物,并经核磁表征验证其结构。[结果]合成12个异唑啉类化合物。初步室内杀虫活性测试结果:当质量浓度为100 mg/L时,化合物3e、3f、3h和3j对小菜蛾防效为100%;当质量浓度为2.5 mg/L时,化合物3i和3j对朱砂叶螨的防效在90%以上。

新型杀虫剂Isocycloseram的合成与杀虫活性

[目的]Isocycloseram是由瑞士先正达公司开发的新型异唑啉类杀虫剂,探索了其合成方法,并测试其杀虫活性。[方法]以4-溴-2-甲基苯甲酸和D-环丝氨酸为起始原料经9步反应成功制备isocycloseram,并经核磁及高分辨质谱表征验证其结构。[结果]所述合成路线反应收率较高。室内杀虫测试结果表明:isocycloseram对鳞翅目害虫小菜蛾、黏虫和二化螟及蜱螨目害虫朱砂叶螨具有较高的杀虫活性。