Chromogenic and fluorogenic substrates for β-lactamase, methods for synthesis thereof and methods for detecting β-lactamase in a sample are provided. The substrates are substantially colorless or substantially nonfluorescent β-lactam compounds which include an electronegative leaving group. The leaving group comprises a carbamate, carbonate, thiocarbamate or thiocarbonate linkage and a fluorescent moiety or a moiety capable of producing a visually detectable colored product. Upon cleavage of the lactam ring by β-lactamase, the leaving group is liberated and fluorescence or a colored product is produced.
本研究提供了β-内酰胺酶的致色和致荧光底物、合成方法以及检测样品中β-内酰胺酶的方法。这些底物是基本无色或基本无荧光的β-内酰胺化合物,其中包括一个电负性离去基团。离去基团包括
氨基甲酸酯、
碳酸酯、
硫代
氨基甲酸酯或
硫代
碳酸酯连接和荧光基团或能够产生视觉上可检测到的有色产物的基团。当内酰胺环被β-内酰胺酶裂解时,离去基团被释放并产生荧光或有色产物。