$N$-functionalized benzimidazol-2-ylidene silver complexes: synthesis, characterization, and antimicrobial studies
作者:Yetkin GÖK、Senem AKKOÇ、Özlem ÖZEROĞLU ÇELİKAL、İlknur ÖZDEMİR、Selami GÜNAL、Elif SAYIN
DOI:10.3906/kim-1304-72
日期:——
2-Methoxyethyl, 2-diethylaminoethyl, and 2-phenylethyl-substituted N-heterocyclic carbene (NHC) precursors were treated with Ag_2CO_3 to yield silver(I)-NHC complexes (1a--g) in dichloromethane as a solvent at room temperature. The 7 new silver-NHC complexes were fully characterized by means of ^1H NMR, ^13}C NMR, and elemental analysis techniques. Using the agar dilution procedure recommended by the Laboratory and Clinical Standards Institute, the antimicrobial activities of all the silver-NHC complexes were studied against 2 gram-negative bacterial strains (Pseudomonas aeruginosa and Escherichia coli), 2 gram-positive bacterial strains (Enterococcus faecalis and Staphylococcus aureus), and 2 fungi (Candida tropicalis and Candida albicans).
以二氯甲烷为溶剂,在室温下用 Ag_2CO_3 处理 2-甲氧基乙基、2-二乙基氨基乙基和 2-苯基乙基取代的 N-杂环碳烯(NHC)前体,得到银(I)-NHC 配合物(1a--g)。通过^1H NMR、^13}C NMR 和元素分析技术对 7 种新的银-NHC 配合物进行了全面表征。采用实验室和临床标准研究所推荐的琼脂稀释程序,研究了所有银-NHC 复合物对两种革兰氏阴性细菌菌株(铜绿假单胞菌和大肠杆菌)、两种革兰氏阳性细菌菌株(粪肠球菌和金黄色葡萄球菌)以及两种真菌(热带念珠菌和白色念珠菌)的抗菌活性。