Synthesis and Antimicrobial Activity of Some Novel Substituted Bis-Pyridone, Pyrazole, and Thiazole Derivatives
作者:Nadia H. Metwally、Fathy M. Abdelrazek、Mohammed T. Jaafar
DOI:10.1002/jhet.2043
日期:2015.3
A variety of novel bis‐heterocyclic derivatives were synthesized via the reaction of bis‐cyanoacetanilide derivative 3 with various aromatic aldehydes (1:2 molar ratio), to give the corresponding bis‐arylidene derivatives 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j, 5k, 5l, 5m. On the other hand, reacting compound 3 with substituted 2‐hydroxybenzaldehydes 6a, 6b, 6c afforded 2‐iminochromene‐3‐carboxamides
通过双氰基乙酰苯胺衍生物3与各种芳香醛(摩尔比为1:2)的反应合成了多种新型的双杂环衍生物,得到了相应的双亚芳基衍生物5a,5b,5c,5d,5e,5f,5g,5h,5i,5j,5k,5l,5m。另一方面,化合物3与取代的2-羟基苯甲醛6a,6b,6c反应提供2-亚氨基色烯-3-羧酰胺7a,7b,7c。化合物5与丙二腈的反应得到新的双吡啶酮9a,9b,9c,9f,9g,9h。5与肼衍生物的反应分别得到吡唑11a,11b,11c,11d,11e,11f。化合物3在室温下在氢氧化钾存在下与异硫氰酸苯酯反应,然后添加一些不同的卤代羰基化合物,得到双多官能化噻唑衍生物13a,13b,13c。双烯胺衍生物15还可与水合肼,胍和羟胺反应,分别得到双吡唑17,嘧啶19和异恶唑21衍生物。一些新合成的化合物显示出中等至高的抗菌活性。