SARS-CoV-2-IN-1

SARS-CoV-2-IN-1 is a potent inhibitor of Mpro [SARS-CoV-2 Mpro, SARS-CoV Mpro, and MERS-CoV Mpro] with IC50 values of 0.67, 0.90, and 0.58 μM, respectively.

SARS-CoV-2 PLpro-IN-1 (Compound 85) is a non-covalent competitive inhibitor of SARS-CoV-2 PLpro with an IC50 value of 15.06 μM and a Ki value of 22.93 μM. It inhibits the proliferation of Vero cells, exhibiting an IC50 of 7.47 μM.

SARS-CoV-2 RdRp-IN-1 (Compound PAP-2) is a potent inhibitor of SARS-CoV-2 RdRp with an EC50 value of 1.11 μM. This compound interacts directly with SARS-CoV-2 RdRp, effectively resisting exonuclease (ExoN) activity, and demonstrates broad-spectrum antiviral activity against coronaviruses.

SARS-CoV-2-IN-16 (Compound 12) is a potent inhibitor of SARS-CoV-2 nucleocapsid protein (NPro) with antiviral activity (EC50 = 3.69 μM) and binds to NPro with a low Kd value of 7.82 μM, indicating its effectiveness as an NPro ligand [1].

SARS-CoV-2 Mpro-IN-1 (compound 16b-3) is a potent, selective, and irreversible inhibitor of the SARS-CoV-2 main protease (Mpro) with an IC50 value of 116 nM [1].

SARS-CoV-2-IN-15 (compound 11) is a niclosamide analogue exhibiting greater stability in human plasma and liver S9 enzyme assays compared to niclosamide. It enhances bioavailability and half-life upon oral administration and is a potent SARS-CoV-2 inhibitor with an IC50 of 0.49 μM [1].

SARS-CoV-2 nsp3-IN-1 (Compound 15c) exhibits significant selectivity for coronavirus macrodomains, particularly SARS-CoV-2 Mac1, and can inhibit Mac1 ADP-ribosylhydrolase activity with an IC50 of 6.1 μM [1].

SARS-CoV-2-IN-13 (compound 5) is an analogue of niclosamide, displaying greater stability in human plasma and liver S9 enzymes assay. It improves bioavailability and half-life when administered orally and is a potent SARS-CoV-2 inhibitor with an IC50 of 0.057 μM [1].

SARS-CoV-2-IN-18 (Compound 26) is a powerful inhibitor of the SARS-CoV-2 3C-like protease, with an IC50 of 45 nM [1].

SARS-CoV-2-IN-17 (Compound 16) is a highly effective inhibitor of the SARS-CoV-2 nucleocapsid protein (NPro), demonstrating potent antiviral activity with an EC50 value of 2.18 μM and binding to NPro with a low Kd value of 7.82 μM, underscoring its potency as a NPro ligand [1].

SARS-CoV-2 nsp13-IN-1 (compound C1) is a potent inhibitor of nsp13 (non-structural protein 13), selectively inhibiting nsp13 ssDNA+ATPase with an IC50 of 6 μM, but not ssDNA-ATPase, and can be used to study COVID-19.

SARS-CoV-2 nsp14-IN-1 (Compound 3) is a dual-substrate inhibitor of SARS-CoV-2 Nsp14 Mtase with an IC50 of 0.061 μM, targeting substrates such as histone lysine, protein arginine, DNA, and RNA.

SARS-CoV-2 3CLpro-IN-1 (Compound 14c) is a highly potent inhibitor specifically designed to target and inhibit the activity of SARS-CoV-2 3CL pro, a cysteine protease found in the main coronaviruses. This enzyme is a promising target for antiviral drug development, positioning SARS-CoV-2 3CLpro-IN-1 as significant for advancing research in infectious diseases [1].

SARS-CoV-2 MERS Mpro-IN-1 is a potent inhibitor of the main proteases in SARS-CoV-2 and MERS, with IC50 values of 0.10 and 0.06 µM, respectively.

SARS-CoV-2-IN-100 (Compound 172) is a broad-spectrum antiviral agent against various SARS-CoV-2 variants. It works synergistically with Nirmatrelvir to reduce the risk of antiviral resistance.

SARS-CoV-2-IN-102 (example 58) is an inhibitor of the SARS-CoV papain-like protease (SARS-CoVPLpro), demonstrating an IC50 of less than 100 nM.

SARS-CoV-2-IN-101 (compound 10O) is an effective orally active inhibitor of SARS-CoV-2 with an EC50 value of 0.64 µM against HCoV-229E. This compound exhibits cytotoxicity and can reduce the expression levels of HCoV-229E N protein and RNA. Additionally, SARS-CoV-2-IN-101 has broad-spectrum antiviral activity against coronaviruses.

SARS-CoV-2-IN-106 (compound 19) is a SARS-CoV-2 papain-like protease inhibitor, displaying IC50 values of 0.44 μM for papain-like proteases and 0.18 μM for viral replication.

SARS-CoV-2-IN-108 (Compound 29) is an inhibitor of SARSCoV-2 papain-like protease, with an IC50 of 0.14 µM. It can inhibit viral replication, displaying an EC50 of 0.21 µM.

SARS-CoV-2-IN-107 (Compound A7) is an inhibitor of SARS-CoV-2 3CLpro, with an IC50 of 261.3 nM. It inhibits the replication of SARS-CoV-2, exhibiting an EC50 of 11.7 μM. Additionally, SARS-CoV-2-IN-107 demonstrates anti-inflammatory activity in LPS-stimulated RAW264.7 macrophages, with a NO inhibition rate of 68.6%.

SARS-CoV-2-IN-110 (compound Bb1) is an inhibitor of SARS-CoV-2, demonstrating antiviral efficacy with an EC50 of 1.10 μM, and significantly reduced toxicity compared to Lapatinib. The compound exhibits a CC50 of greater than 100 μM against SARS-CoV-2, with a selectivity index (SI) exceeding 91.

SARS-CoV-2-IN-109 (compound 50) is an inhibitor targeting SARS-CoV, demonstrating in vivo anti-infection activity. It interferes with the interaction between the SARS-CoV-2 Spike receptor-binding domain (RBD) and the human receptor angiotensin-converting enzyme 2 (ACE2) with an EC50 of 26.5 μM, effectively blocking SARS-CoV-2 entry into VeroE6 cells (ECS50=17.0 μM). The compound has a CC50 greater than 100 μM in VeroE6 cells.

SARS-CoV-2-IN-105 (Compound 4a) is an inhibitor of SARS-CoV-2, with an EC50 value of 0.69 μM.

SARS-CoV-2-IN-111 (compound 77) is a highly effective inhibitor of SARS-CoV-2, exhibiting an IC50 of 0.67 μM. It markedly decreases the presence of SARS-CoV-2 within Vero cells.