Synthesis and antimicrobial activity of novel coumarin derivatives from 4-methylumbelliferone
作者:Sined Medimagh-Saidana、Anis Romdhane、Mejda Daami-Remadi、Haifa Jabnoun-Khiareddine、David Touboul、Hichem Ben Jannet、M’hamed Ali Hamza
DOI:10.1007/s00044-015-1368-y
日期:2015.8
Considering the potential interest of heterocyclic compounds, the aim of the present study is to synthesize new coumarin derivatives, to provide their full chemical characterization and to evaluate their antimicrobial activities. The reaction of ethyl 2-(4-methyl-2-oxo-2H-chromen-7-yloxy) acetate 2 with sodium hydroxide afforded the corresponding 2-(2-oxo-4-methyl-2H-chromen-7-yloxy) acetic acid 3
考虑到杂环化合物的潜在利益,本研究的目的是合成新的香豆素衍生物,以提供其完整的化学特性并评估其抗菌活性。2-(4-甲基-2-氧代- 2的反应ħ -色烯-7-基氧基)乙酸甲酯2用氢氧化钠,得到相应的2-(2-氧代-4-甲基-2 ħ -苯并吡喃-7-氧基)乙酸3将其用一系列醇中的碘的存在下,得到一个新的系列香豆素酯的酯化4A - Ĵ。另一方面,关键中间体2的处理用肼在乙醇中的水溶液在回流下得到相应的酰肼5,该酰肼通过分别与一系列芳族醛和环酐缩合而进一步转化为香豆素衍生物6a - f和7a - c。合成的化合物通过1 H NMR,13 C NMR,IR和HRMS进行完全表征。使用圆盘扩散法评估了新合成化合物的抗菌和抗真菌活性,这似乎很重要。