A comparison between Suzuki cross‐coupling reaction and direct arylation in the synthesis of new antibacterial imidazo‐pyrazines/pyridazines
作者:Siavash Salek Soltani、S. Morteza F. Farnia、Alireza Foroumadi
DOI:10.1002/jhet.3902
日期:2020.4
Two efficient synthetic routes to preparation of 2,3‐diarylimidazo[1,2‐a]pyrazines and 2,3‐diarylimidazo[1,2‐b]pyridazines are described. The procedures involve a Suzuki cross‐coupling reaction and a palladium‐catalyzed direct arylation at position 3 and finally a comparative study is achieved. The antibacterial activities of the synthesized compounds in vitro were measured and the results showed that
两个有效合成路线制备2,3- diarylimidazo [1,2的一个]吡嗪和2,3- diarylimidazo [1,2 b中描述]哒嗪。该程序涉及铃木交叉偶联反应和位置3处钯催化的直接芳基化,最后进行了比较研究。测定了合成化合物的体外抗菌活性,结果表明大多数产品均具有中等至良好的抗菌活性。化合物3a,3c,3j,3k,3l和3n表现出明显的抗金黄色葡萄球菌,枯草芽孢杆菌的能力,和最小抑菌浓度值分别为32μg/ mL的大肠杆菌,与其他菌株相比更好。