Facile synthesis of novel benzotriazole derivatives and their antibacterial activities
作者:Jun Wan、Peng-Cheng Lv、Na-Na Tian、Hai-Liang Zhu
DOI:10.1007/s12039-010-0094-8
日期:2010.7
A series of benzotriazole derivatives (compounds 1–27) were synthesized, and 24 (compounds 1–5, 9–27) of which were first reported. Their chemical structures were confirmed by means of 1H NMR, IR and elemental analyses, coupled with one selected single crystal structure (compound 1). All the compounds were assayed for antibacterial activities against three Gram positive bacterial strains (Bacillus subtilis, Staphylococcus aureus and Streptococcus faecalis) and three Gram negative bacterial strains (Escherichia coli, Pseudomonas aeruginosa and Enterobacter cloacae) by MTT method. Among the compounds tested, most of them exhibited potent antibacterial activity against the six bacterial strains. Most importantly, compound 3-benzotriazol-1-yl-1-(4-bromo-phenyl)-2-[1,2,4]triazol-1-ylpropan-1-one (19) showed the most favourable antibacterial activity against B. subtilis, S. aureus, S. faecalis, P. aeruginosa, E. coli and E. cloacae with MIC of 1.56 µg/mL, 1.56 µg/mL, 1.56 µg/mL, 3.12 µg/mL, 6.25 µg/mL and 6.25 µg/mL, respectively.
合成了一系列苯并三唑衍生物(化合物 1-27),其中 24 种(化合物 1-5、9-27)为首次报道。通过 1H NMR、IR 和元素分析确认了这些化合物的化学结构,并选定了一个单晶结构(化合物 1)。采用 MTT 法检测了所有化合物对三种革兰氏阳性细菌菌株(枯草杆菌、金黄色葡萄球菌和粪链球菌)和三种革兰氏阴性细菌菌株(大肠杆菌、铜绿假单胞菌和泄殖腔肠杆菌)的抗菌活性。在测试的化合物中,大多数化合物都对六种细菌菌株具有很强的抗菌活性。最重要的是,化合物 3-苯并三唑-1-基-1-(4-溴苯基)-2-[1,2,4]三唑-1-基丙-1-酮(19)对枯草杆菌、金黄色葡萄球菌、粪肠球菌表现出最有利的抗菌活性。金黄色葡萄球菌、粪肠球菌、铜绿假单胞菌、大肠杆菌和泄殖腔大肠杆菌的抗菌活性最强,其 MIC 值分别为 1.56 µg/mL、1.56 µg/mL、1.56 µg/mL、3.12 µg/mL、6.25 µg/mL 和 6.25 µg/mL。