Synthesis and anti-microbial screening of some Schiff bases of 3-amino-6,8-dibromo-2-phenylquinazolin-4(3H)-ones
作者:Perumal Panneerselvam、Bilal Ahmad Rather、Dontireddy Ravi Sankar Reddy、Natesh Ramesh Kumar
DOI:10.1016/j.ejmech.2008.04.010
日期:2009.5
and Aspergillus fumigatus ATCC-46645) activities by paper disc diffusion technique. The minimum inhibitory concentrations (MICs) of the compounds were also determined by agar streak dilution method. Among the synthesized compounds 3-(3,4,5-trimethoxybenzylideneamino)-6,8-dibromo-2-phenylquinazolin-4(3H)-one 10 was found to be the most potent anti-microbial activity with MICs of 18.9, 19.1, 18.8, 21.7
在本研究中,通过环化中间体6,8-二溴代-3-氨基-6,8-二溴-2-苯基喹唑啉-4(3 H)-与不同的芳族醛缩合,合成了一系列新型席夫碱。2-苯基苯并恶嗪-4-酮。通过IR,1 H NMR,13 C NMR,质谱和元素分析确认化学结构。筛选了这些化合物的抗菌药物(金黄色葡萄球菌ATCC-9144,表皮葡萄球菌ATCC-155,黄l微球菌ATCC-4698,蜡状芽孢杆菌ATCC-11778,大肠杆菌ATCC-25922,铜绿假单胞菌ATCC-2853和通过纸片扩散技术,可以检测肺炎克雷伯菌肺炎克雷伯菌( ATCC-11298)和抗真菌药(黑曲霉ATCC-9029和烟曲霉ATCC-46645)的活性。还通过琼脂条纹稀释法确定化合物的最小抑制浓度(MIC)。在合成的化合物3-(3,4,5-三甲氧基亚苄基氨基)-6,8-二溴-2-苯基喹唑啉-4(3 H)中,有一个10的抗菌活性最强,MIC为18