Synthesis, Biological Evaluation, and 3D-QSAR Studies of <i>N</i>-(Substituted pyridine-4-yl)-1-(substituted phenyl)-5-trifluoromethyl-1<i>H</i>-pyrazole-4-carboxamide Derivatives as Potential Succinate Dehydrogenase Inhibitors
作者:Zhibing Wu、Hyung-Yeon Park、Dewen Xie、Jingxin Yang、Shuaitao Hou、Nasir Shahzad、Chan Kyung Kim、Song Yang
DOI:10.1021/acs.jafc.0c05702
日期:2021.2.3
A series of new fungicides that can inhibit the succinate dehydrogenase (SDH) was classified and named as SDH inhibitors by the Fungicide Resistance Action Committee in 2009. To develop more potential SDH inhibitors, we designed and synthesized a novel series of N-(substituted pyridine-4-yl)-1-(substituted phenyl)-5-trifluoromethyl-1H-pyrazole-4-carboxamide derivatives, 4a–4i, namely, 5a–5h, 6a–6h
一系列能够抑制琥珀酸脱氢酶(SDH)的新型杀真菌剂在2009年被抗真菌剂行动委员会分类并命名为SDH抑制剂。为了开发更多潜在的SDH抑制剂,我们设计并合成了一系列新型的N-(取代吡啶) -4-yl)-1-(取代的苯基)-5-三氟甲基-1 H-吡唑-4-羧酰胺衍生物4a - 4i,即5a - 5h,6a - 6h和7a - 7j。生物测定结果表明,某些标题化合物对四种受试植物病原真菌(Gibberella zea)表现出优异的抗真菌活性。,尖孢镰刀菌(Fusarium oxysporum),曼氏丝孢菌(Cytospora mandshurica)和疫霉菌(Phytophthora infestans))。的EC 50值分别为1.8微克/毫升为图7a针对G.玉蜀黍赤霉,1.5和3.6微克/毫升为7C对尖孢镰孢和C.楸分别和6.8微克/毫升1408米针对致病疫霉。SDH酶促活性测试显示IC 50