First Discovery of Novel Pyrido[1,2-<i>a</i>]pyrimidinone Mesoionic Compounds as Antibacterial Agents
作者:Dengyue Liu、Jian Zhang、Lei Zhao、Wengjing He、Zhengjun Liu、Xiuhai Gan、Baoan Song
DOI:10.1021/acs.jafc.9b03606
日期:2019.10.30
low-risk antibacterial agents. A series of novel pyrido[1,2-a]pyrimidinone mesoionic compounds containing vanillin moieties were synthesized, and the application of these mesoionic compounds as plant antibacterial agents was reported here for the first time. The bioassay results revealed that the mesoionic compounds had good antibacterial activity. Of these compounds, compound 11 showed excellent in vitro
植物细菌性疾病导致农作物产量和质量大幅下降,并且缺乏高效,低风险的抗菌剂。合成了一系列新的含有香草醛部分的吡啶并[1,2-a]嘧啶酮中离子化合物,并首次报道了这些中离子化合物作为植物抗菌剂的应用。生物测定结果表明,中离子化合物具有良好的抗菌活性。在这些化合物中,化合物11表现出优异的抗米黄单胞菌pv的体外活性。米色,其EC50值为1.1μg/ mL,大大优于比美噻唑(92.7μg/ mL)和噻二唑铜(105.4μg/ mL)。而且,温室条件试验表明,化合物11对水稻细菌性叶枯病的防护和治疗活性分别为75.12%和72.04%,优于比美噻唑(分别为62.24%和50.83%)和噻二唑铜(53.35%和65.04%,分别)。这些结果为中离子香兰素部分作为新的抗菌剂的应用提供了基础。