Gram-negative bacteria. A strong correlation (Spearman coefficient of 0.87; p = 4.7 × 10-21) was observed between the inhibition efficacy of purified β-lactamases and the potentiation of β-lactam antibacterial activity, indicating that DBO functionalization did not impair penetration. In comparison to reference DBOs, avibactam and relebactam, our compounds displayed reduced efficacy, likely due to the absence
包含二氮杂双
环辛烷(DBO)支架的第二代β-内酰胺酶抑制剂可恢复β-内酰胺类对病原菌的活性,包括产生不被包含β-内酰胺的第一代
抑制剂敏感的A,C和D类酶的病原菌环。在这里,我们报告了一条合成路线的优化,该路线可访问含三唑的DBO,并对17种化合物进行
生物学评估,以抑制5种β-内酰胺酶,这些5种内酰胺酶代表致病性革兰氏阴性细菌中的酶。观察到纯化的β-内酰胺酶的抑制效果与β-内酰胺抗菌活性的增强之间有很强的相关性(斯皮尔曼系数为0.87; p = 4.7×10-21),这表明DBO功能化不会损害渗透。与参考DBO,avibactam和relebactam相比,