Discovery of mercaptopropanamide-substituted aryl tetrazoles as new broad-spectrum metallo-beta-lactamase inhibitors.
Yan, Y.H., Chen, J., Zhan, Z., Yu, Z.J., Li, G., Guo, L., Li, G.B., Wu, Y., Zheng, Y.(2020) RSC Adv 10: 31377-31384
- PubMed: 35520685 
- DOI: https://doi.org/10.1039/d0ra06405j
- Primary Citation of Related Structures:  
7CJL - PubMed Abstract: 
β-Lactam antibiotic resistance mediated by metallo-β-lactamases (MBL) has threatened global public health. There are currently no available inhibitors of MBLs for clinical use. We previously reported the ruthenium-catalyzed meta-selective C-H nitration synthesis method, leading to some meta -mercaptopropanamide substituted aryl tetrazoles as new potent MBL inhibitors. Here, we described the structure-activity relationship of meta - and ortho -mercaptopropanamide substituted aryl tetrazoles with clinically relevant MBLs. The resulting most potent compound 13a showed IC 50 values of 0.044 μM, 0.396 μM and 0.71 μM against VIM-2, NDM-1 and IMP-1 MBL, respectively. Crystallographic analysis revealed that 13a chelated to active site zinc ions via the thiol group and interacted with the catalytically important residues Asn233 and Tyr67, providing further structural information for the development of thiol based MBL inhibitors.
Organizational Affiliation: 
Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education, Sichuan Engineering Laboratory for Plant-Sourced Drug, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Sichuan 610041 China yongxiangzheng@scu.edu.cn +86 199 3880 2868.