Synthesis and antimicrobial activity of some benzoxazinoids derivatives of 2-nitrophenol and 3-hydroxy-2-nitropyridine
作者:William Gustavo Lima、Flávio José dos Santos、Adriana Cristina Soares、Francisco A. Macías、José M. G. Molinillo、Jaqueline Maria Siqueira Ferreira、João Máximo de Siqueira
DOI:10.1080/00397911.2018.1554146
日期:2019.1.17
by palladium on carbon. Next, the biological assays showed that pyridoxazinone serie has a good antibacterial activity, especially against Enterococcus faecalis (Minimum inhibitory concentration—MIC: 7.8-15.6 μg.mL−1) and Acinetobacter baumannii (MIC 31.25-125 μg.mL−1). Antifungal activity, in turn, was related to compound 2e which showed a MIC of 62.5 μg.mL−1 against Candida albicans, Candida glabrata
摘要 苯并恶嗪类 (BXs) 是禾本科物种中常见的生物碱,是一种天然防御物质,可用于开发新型抗菌剂。在这里,BXs 类似物是由 2-硝基苯酚(苯并恶嗪酮系列)和 3-羟基-2-硝基吡啶(吡哆嗪酮系列)合成的,并针对真菌和医学细菌进行了测试。为了使类似物官能化,对起始材料进行足够的亲核取代,然后由钯/碳催化的还原性环化。其次,生物测定表明吡哆嗪酮系列具有良好的抗菌活性,尤其是对粪肠球菌(最低抑菌浓度-MIC:7.8-15.6 μg.mL-1)和鲍曼不动杆菌(MIC 31.25-125 μg.mL-1)。反过来,抗真菌活性 与化合物 2e 相关,化合物 2e 对白色念珠菌、光滑念珠菌和热带念珠菌的 MIC 为 62.5 μg.mL-1。所有类似物都符合利平斯基的规则,并预计具有低毒性。图形概要