Novel pyrazole-4-carboxamides and aromatic carboxamides derivatives containing a hydrazine moiety as potential SDHIs
作者:Bo Luo、Wei Zhou、Xingai Zhang、Pei Zhao、Xiaoxiao Zhang、Longge Zhang、Hongyan Ding、Lailiang Qu
DOI:10.1016/j.molstruc.2023.136202
日期:2023.11
times more potent than that of Boscalid (EC50 = 0.74 μg/mL). Moreover, compound 4i also displayed promising antifungal activities against Sclerotinia sclerotiorum, B. cinerea, Alternaria alternate, and F. graminearum (IC50 = 1.21–4.50 μg/mL), indicating a broad spectrum of antifungal activities. Additionally, in vivo antifungal activities results showed that 4i could significantly inhibit the growth of
为了促进新型SDHIs杀菌剂的发现和开发,设计、合成了一系列具有肼支架的新型吡唑-4-甲酰胺4a-t和芳香族甲酰胺8a-i ,并评估了其抗真菌活性。结果表明,化合物4i对立枯丝核菌表现出优异的抗真菌活性, EC 50值为0.24 μg/mL,比啶酰菌胺(EC 50 = 0.74 μg/mL)强约3倍。此外,化合物4i还对核盘菌、灰霉病菌、交替链格孢菌和禾谷镰刀菌表现出良好的抗真菌活性(IC 50 = 1.21–4.50 μg/mL),表明具有广谱抗真菌活性。此外,体内抗真菌活性结果表明,4i在100 μg/mL浓度下可显着抑制水稻叶片中立枯丝核菌的生长,具有良好的保护效果(55.21%)和优异的疗效(73.06%)。SDH酶抑制实验结果表明,化合物4i具有显着的SDH抑制作用,IC 50值为6.47 μM,优于啶酰菌胺(IC 50 = 7.92 μM)。此外,SEM分析表明,化合物4