MProinhibitor 11b is an inhibitor of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) main protease (MPro; IC50= 0.04 μM in a TR-FRET assay).1It reduces viral yield in the culture supernatant of SARS-CoV-2-infected Vero E6 cells (EC50= 0.72 μM). MProinhibitor 11b also reduces viral RNA copy numbers in the same model when used at concentrations ranging from 1.85 to 50 μM. 1.Dai, W., Zhang, B., Jiang, X.-M., et al.Structure-based design of antiviral drug candidates targeting the SARS-CoV-2 main proteaseScience368(6497)1331-1335(2020)
Mpro inhibitor N3 hemihydrate is a potent inhibitor of SARS-CoV-2 Mpro with an EC50 of 16.77 μM for SARS-CoV-2. Mpro inhibitor N3 hemihydrate specifically inhibits Mpro from multiple coronaviruses, including SARS-CoV and MERS-CoV. Mpro inhibitor N3 hemihydrate displays inhibition against HCoV-229E, FIPV, and MHV-A59 with individual IC50 of 4.0 μM, 8.8 μM, and 2.7 μM, respectively[1][2]. Mpro inhibitor N3 hemihydrate (0-0.64 μM) is able to penetrate cells to inhibit the replication of IBV viruses, probably at the beginning of infection in embryos[3]. [1]. Jin Z, et al. Structure of Mpro from SARS-CoV-2 and discovery of its inhibitors. Nature. 2020;582(7811):289-293.[2]. Yang H, et al. Design of wide-spectrum inhibitors targeting coronavirus main proteases [published correction appears in PLoS Biol. 2005 Nov;3(11):e428]. PLoS Biol. 2005;3(10):e324.[3]. Wang F, et al. Structure of Main Protease from Human Coronavirus NL63: Insights for Wide Spectrum Anti-Coronavirus Drug Design. Sci Rep. 2016;6:22677. Published 2016 Mar 7.
Coronavirus main protease (Mpro) inhibitor (respective IC50 values are 2.7, 4 and 8.8 μM for MHV-A29, HCoV-229E and FOPV replication in vitro). Inhibits viral cell infection in an MHV plaque reduction assay. Also inhibits SARS-CoV-2 viral cell entry in a plaque reduction assay (IC50 = 16.8 μM).