Synthesis of some new 1,2,4-triazoles starting from isonicotinic acid hydrazide and evaluation of their antimicrobial activities
作者:Hacer Bayrak、Ahmet Demirbas、Neslihan Demirbas、Sengül Alpay Karaoglu
DOI:10.1016/j.ejmech.2009.05.022
日期:2009.11
and 7b). The reactions of 2, 5 and 7a with some primary and secondary amines in the presence of formaldehyde afforded the corresponding Mannich bases, 4a, 4b, 9a–9c and 8. All newly synthesized compounds were screened for their antimicrobial activity. The antimicrobial activity study revealed that all the compounds screened showed good or moderate activity except compounds 2, 7a, 7b, 8 and 9b.
通过在碱性介质中异烟酸酰肼与二硫化碳的反应制得5-吡啶-4-基-1,3,4-恶二唑-2-硫醇(2),然后将其转化为4-氨基-5-吡啶-4-通过水合肼处理yl-4 H -1,2,4-三唑-3-硫醇(5)。由2和5与溴乙烷的反应进行3和6的合成。用4-氟苯甲醛或吲哚-3-甲醛处理5导致形成4-[((芳基亚甲基)氨基] -5-吡啶-4--4-基-4 H -1,2,4-三唑-3-硫醇(7a和7b)。2的反应,5和7A与甲醛,得到相应的曼尼期碱,存在一些伯和仲胺图4a,图4b,图9a - 9C和8。 筛选所有新合成的化合物的抗菌活性。抗菌活性研究表明,所有的化合物筛选的结果显示,除了化合物良好或中度活动2,7A,7B,8和9B。