Synthesis and biological evaluation of some heterocyclic scaffolds based on the multifunctional
<i>N</i>
‐(4‐acetylphenyl)‐2‐chloroacetamide
作者:Ehab Abdel‐Latif、Mustafa M. Fahad、Amr El‐Demerdash、Mohamed A. Ismail
DOI:10.1002/jhet.4012
日期:2020.8
and/or thiosemicarbazide furnished the conforming condensation products, 4 , 7 , and 10 , respectively. Treatment of the phenylhydrazone product, 4 , with Vilsmeier formylation reagent (POCl3/DMF) yielded the corresponding 4‐formylpyrazole derivative, 5 . The thiosemicarbazone product, 10 , was reacted with ethyl bromoacetate to furnish the thiazolin‐4‐one derivative, 11 . The substitution reactions
氯乙酰胺衍生物1被用作合成各种类型的N-芳基-2-(苯并噻唑-2-基硫基)乙酰胺衍生物的通用前体。的反应1与2-巯基苯并接着用苯肼,2- cyanoacetohydrazide所产生的硫化物的缩合反应,和/或氨基硫脲提供的符合缩合产物,4,7,和10,分别。用Vilsmeier甲酰化试剂(POCl 3 / DMF)处理苯hydr产物4,得到相应的4-甲酰基吡唑衍生物5。硫半脲产品,10与溴乙酸乙酯反应,得到噻唑啉-4-酮衍生物11。探索了氯乙酰胺衍生物1与2-巯基4,4,6-二甲基烟腈和6-氨基-2-巯基嘧啶丁-4-醇的取代反应,以鉴定硫化物产物14和17。使用乙醇钠将14环化为其相应的噻吩并[2,3- b ]吡啶化合物15。已发现10硫代半碳杂14和14的硫化物衍生物是对大肠杆菌和细菌最有效的抗菌化合物。金黄色葡萄球菌的生长抑制活性分别为80.8%和91.7%。此外,硫半脲10表现出最显着的抗氧化活性,抑制活性为82