1. Academic Validation
  2. Discovery of the potent covalent inhibitor with an acrylate warhead for SARS-CoV-2 3CL protease

Discovery of the potent covalent inhibitor with an acrylate warhead for SARS-CoV-2 3CL protease

  • Bioorg Med Chem Lett. 2024 Nov 1:112:129942. doi: 10.1016/j.bmcl.2024.129942.
Wen Shen 1 Xinyao Chen 2 Liping Zhou 3 Yan Cheng 3 Yan Zhang 3 Xiangrui Jiang 3 Haiguo Sun 4 Jingshan Shen 5
Affiliations

Affiliations

  • 1 School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, China; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
  • 2 Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China; Yangtze Delta Drug Advanced Research Institute and Yangtze Delta Pharmaceutical College, Nantong 226133, China.
  • 3 State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China.
  • 4 State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: sunhaiguo@simm.ac.cn.
  • 5 School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, China; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Abstract

COVID-19 has caused severe consequences in terms of public health and economy worldwide since its outbreak in December 2019. SARS-CoV-2 3C-like Protease (3CLpro), crucial for the viral replications, is an attractive target for the development of Antiviral drugs. In this study, several kinds of Michael acceptor warheads were utilized to hunt for potent covalent inhibitors against 3CLpro. Meanwhile, novel 3CLpro inhibitors with the P3-3,5-dichloro-4-(2-(dimethylamino)ethoxy)phenyl moiety were designed and synthesized which may form salt bridge with residue Glu166. Among them, two compounds 12b and 12c exhibited high inhibitory activities against SARS-CoV-2 3CLpro. Further investigations suggested that 12b with an acrylate warhead displayed potent activity against HCoV-OC43 (EC50 = 97 nM) and SARS-CoV-2 replicon (EC50 = 45 nM) and low cytotoxicity (CC50 > 10 μM) in Huh7 cells. Taken together, this study devised two series of 3CLpro inhibitors and provided the potent SARS-CoV-2 3CLpro inhibitor (12b) which may be used for treating coronavirus infections.

Keywords

Antiviral activities; COVID-19; Drug design; SARS-CoV-2 3CL(pro) inhibitor.

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