共查询到20条相似文献,搜索用时 62 毫秒
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利用中间体衍生化方法, 将噻吩环引入到双酰胺类化合物中, 合成了一系列取代噻吩双酰胺类化合物1~3; 目标化合物的结构经核磁共振波谱、 红外光谱及元素分析确认. 生物活性测试结果表明, 化合物1在600 mg/L剂量下对小菜蛾具有良好的杀虫效果, 致死率均为100%, 其中化合物1a和1e在20 mg/L剂量下对小菜蛾的致死率仍达到60%以上; 改变双酰胺结构中的吡唑环得到化合物2和3, 其杀虫活性消失, 说明该类化合物中吡唑环结构对杀虫活性具有关键作用. 相似文献
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为优化抗倒胺结构。合成了30种化合物,用IR,1HNMR及元素分析确定了结构,并进行了水稻发芽试验及田间试验。 相似文献
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以分子对接法进行MDL/ACD三维数据库搜寻所得到的大量结构信息为指导, 从中选取部分酰胺类小分子进行化学合成和结构表征. 生物活性测试结果表明, 设计合成的8个酰胺类化合物在200 μg/mL浓度下对水稻KARI酶具有不同程度的抑制活性, 化合物1和6的抑制率可达到57.4%和48.1%. 部分化合物在100 μg/mL浓度下对双子叶植物油菜的胚根和单子叶植物稗草的茎叶的抑制活性较为显著, 化合物1和6对油菜胚根生长抑制率分别为52.0%和72.6%, 其与KARI酶体外(in vitro)抑制活性具有一定的相关性. 这些酰胺类化合物可作为KARI酶抑制剂为后续分子设计提供借鉴. 相似文献
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Two series of novel anthranilic diamide insecticide containing trifluoroethyl ether were designed and synthesized, and their structures were characterized by 1H NMR spectroscopy, elemental analysis and single crystal X‐ray diffraction analysis. The insecticidal activities of the new compounds were evaluated. The results of bioassays indicated that some of these title compounds exhibited excellent insecticidal activities. The insecticidal activities of compounds 19a , 19b , 19d , 19g , 19k and 19m against oriental armyworm at 2.5 mg·kg?1 were 100%. The larvicidal activities of 19a , 19b , 19c , 19d , 19e , 19g and 19n against diamond‐back moth were 100% at 0.1 mg·kg?1. Surprisingly, most of them still exhibited perfect insecticidal activity against diamond‐back moth when the concentration was reduced to 0.05 mg·kg?1, which was higher than the commercialized Chlorantraniliprole. 相似文献
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为寻找具有更高生物活性、更环保的新农药杀菌剂,基于杀菌剂氟咯菌腈设计并合成了10个新型吡唑联吡咯类杂环化合物,以吡唑环代替氟咯菌腈上原有的苯环,以期提高其杀菌活性.采用1H NMR,FTIR,单晶X射线衍射、元素分析和熔点测定等测试手段对目标化合物及其中间体的结构进行了表征与确认,并通过挥发法培养得到了6个目标化合物的单晶.还对其中6个化合物进行了生物活性测试,测试结果表明各化合物对水稻纹枯病、黄瓜灰霉病、黄瓜霜霉病均表现出一定的抑菌效果,可作为先导化合物对其结构进行深入的研究,为新农药杀菌剂的开发提供了理论支持. 相似文献
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ZHAO Yu LI Yong-qiang XIONG Li-xia XU Li-ping PENG Li-na LI Fang LI Zheng-ming 《高等学校化学研究》2013,29(1):51-56
In search of environmentally benign insecticides with high activity, low toxicity and low residue, a series of novel anthranilic diamide derivatives containing N-pyridylpyrazole was designed and synthesized. All the compounds were characterized by 1H NMR spectroscopy and elemental analysis. The single crystal structure of compound 8j was determined by X-ray diffraction. The insecticidal activities of the new compounds were evaluated. The results show that some compounds exhibited moderate insecticidal activities against Lepidoptera pests. Among this series of compounds, compounds 8o and 8p showed 100% larvicidal activity against Mythimna separate Walker, Plutella xylostella Linnaeus and Laphygma exigua Hubner at a test concentration of 200 mg/kg, which is equal to the commercial chlorantraniliprole. 相似文献
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新型含硅唑类化合物的合成及杀菌活性 总被引:1,自引:0,他引:1
合成了20个新型含硅唑类化合物,其化学结构经IR,MS,1HNMR和元素分析确证。生物活性测定显示一些化合物对棉花枯萎病菌等有较好的抑制活性,一些化合物对黄瓜灰霉病菌的抗性菌有很好的活性。讨论了化合物的结构与生物活性关系。 相似文献
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ZHAO Yangyang LI Huangong SUN Pengwei GAO Li ZHOU Sha XIONG Lixia YANG Na LI Yuxin LI Zhengming 《高等学校化学研究》2020,36(6):1168-1173
In order to find a new variety of ryanodine receptor(RyR) regulator with greater biological activity, a series of anthranilic diamide derivatives possessing pyrrole structure was designed and synthesized in this study. The pyrrole derivatives were evaluated for their insecticidal activity against Mythimna separata and Plutella xylostella. As indicated by the preliminary biological activities, compounds 12h-12j and 12l-12n exhibited a remarkable insecticidal activity against M. separata at 0.25 mg/L. Compared to control chlorantraniliprole, compound 12j exhibited more excellent insecticidal activity at 0.1 mg/L. Meanwhile, compounds 12c, 12h, 12i, 12j, 12l, and 12m were selected to test the insecticidal activity against P. xylostella, which led to the desirable insecticidal activity at 1×10-3 mg/L. Notably, compound 12l demonstrated 47% insecticidal activity at 5×10-6mg/L over the control. In addition, the biological mechanism of action of compound 12j was investigated by means of insect electrophysiology experiment. 相似文献