key intermediates. Probe 1b exhibited high stability and a prompt turn-on fluorescence signal upon hydrolysis by carbapenemases. In particular, the screening of clinical samples indicated that the probe 1b exhibited excellent selectivity to the CPOs over other β-lactamases or non-carbapenemase producing bacteria, which may be of clinical use for the rapid and accurate detection of CPOs for timely diagnosis
该报告描述了由碳青霉烯衍
生物,荧光
染料和活性可裂解接头组成的荧光碳青霉烯酶底物文库的合成及其对特异性检测产生碳青霉烯酶的
生物(CPO)的评估。我们使用羟甲基碳青霉烯7a和羟基烯丙基碳青霉烯7b作为关键中间体,合成了一系列具有三种不同类型接头的化合物,例如苄基醚,
氨基甲酸酯和胺。探针1b表现出很高的稳定性,并在被碳青霉烯酶
水解后显示出快速的开启荧光信号。特别是,对临床样品进行的筛选表明,探针1b对CPO的选择性优于其他产生β-内酰胺酶或不产生卡巴姆菌的细菌,