Synthesis and antimicrobial activity of chromone-linked 2-pyridone fused with 1,2,4-triazoles, 1,2,4-triazines and 1,2,4-triazepines ring systems
作者:Tarik El-Sayed Ali、Magdy Ahmed Ibrahim
DOI:10.1590/s0103-50532010000600010
日期:——
Three series of novel fused nitrogen heterocyclic systems such as 1,2,4-triazolo[1,5-α ] pyridines (5-7 and 9), pyrido[1,2-b][1,2,4]triazines (10, 11, 13 and 15), and pyrido[1,2-b][1,2,4]triazepines (17, 18, 20 and 22) linked with a chromone moiety were synthesized from the key intermediate 1,6-diamino-(6-chloro-4-oxo-4H-chromen-3-yl)-2-oxo-1,2-dihydropyridine-3,5-dicarbonitrile (4) with some electrophilic
三组新颖的稠合氮杂环系统,例如1,2,4-三唑并[1,5-α]吡啶(5-7和9),吡啶并[1,2-b] [1,2,4]三嗪( 10、11、13和15)和与色酮部分连接的吡啶并[1,2-b] [1,2,4]三氮杂20(17、18、20和22)由关键中间体1,6-合成二氨基-(6-氯-4-氧代-4H-铬-3-基)-2-氧代-1,2-二氢吡啶-3,5-二碳腈(4)和一些亲电试剂。通过元素分析和光谱数据确定了新型化合物的结构。还对所有产品的抗微生物活性进行了体外筛选。与参考药物相比,化合物7、9和15表现出最高的活性。