Synthesis of some new 1,2,4-triazoles, their Mannich and Schiff bases and evaluation of their antimicrobial activities
作者:Hacer Bayrak、Ahmet Demirbas、Sengül Alpay Karaoglu、Neslihan Demirbas
DOI:10.1016/j.ejmech.2008.06.019
日期:2009.3
derivative of compound 14 and a Mannich base derivative of compound 12 were synthesized from the reactions of these precursors with methyl iodide and methyl piperazine, respectively. All newly synthesized compounds were screened for their antimicrobial activities. The antimicrobial activity study revealed that all the compounds screened showed good or moderate activity except compounds 3, 5c, 7, 9c
在碱性介质中,通过形成2-异烟酰基-N-苯基肼基碳硫磺酰胺(2),获得了4-苯基-5-吡啶-4--4-基-4 H -1,2,4-三唑-3-硫醇(3),和转化为某些烷基化衍生物(4a,b)和曼尼希碱衍生物(5a – c)。通过将化合物3作为前体分两步获得的2-[(4-苯基-5-吡啶-4--4-基-4 H -1,2,4-三唑-3-基)硫代]乙酰肼(7)为转化为硫代氨基脲衍生物(8),席夫碱衍生物(9)和5-[(4-苯基-5-吡啶-4--4-基-4 H-1,2,4-三唑-3-基)硫]甲基} -1,3,4-恶二唑-2-硫醇(10)。此外,5-[((4-苯基-5-吡啶-4-基-4 H -1,2,4-三唑-3-基)硫基]甲基] -3-[((2-吗啉-4-通过化合物10与2-(4-吗啉代)乙胺的反应合成了(乙基乙基)氨基]甲基} -1,3,4-恶二唑-2(3H)-硫酮(11)。用NaOH处理化合物