PRD_002214   Click here for help

GtoPdb Ligand ID: 10716

Synonyms: inhibitor N3 | N-[(5-METHYLISOXAZOL-3-YL)CARBONYL]ALANYL-L-VALYL-N~1~-((1R,2Z)-4-(BENZYLOXY)-4-OXO-1-{[(3R)-2-OXOPYRROLIDIN-3-YL]METHYL}BUT-2-ENYL)-L-LEUCINAMIDE
Compound class: Synthetic organic
Comment: PRD_002214 is an irreversible peptide-like inhibitor of the main protease (MPRO) of SARS-CoV-2 [1]. The chemical structure was obtained from the RCSB Protein Data Bank entry 6LU7 which shows the ligand in complex with the protease. The article describing the work has not yet been published (March 12, 2020), but the inhibitor (also referred to as N3) has been deployed in other MPRO crystallisation studies [2]. The MPRO sequence is held in the NCBI record 'Chain A, SARS-CoV-2 main protease'.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 12
Hydrogen bond donors 5
Rotatable bonds 22
Topological polar surface area 197.83
Molecular weight 680.35
XLogP 3.31
No. Lipinski's rules broken 2
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES CC(C[C@@H](C(=O)N[C@@H](C[C@@H]1CCNC1=O)/C=C\C(=O)OCc1ccccc1)NC(=O)[C@H](C(C)C)NC(=O)[C@@H](NC(=O)c1noc(c1)C)C)C
Isomeric SMILES CC(C[C@@H](C(=O)N[C@@H](C[C@@H]1CCNC1=O)/C=C\C(=O)OCc1ccccc1)NC(=O)[C@H](C(C)C)NC(=O)[C@@H](NC(=O)c1noc(c1)C)C)C
InChI InChI=1S/C35H48N6O8/c1-20(2)16-27(39-35(47)30(21(3)4)40-31(43)23(6)37-34(46)28-17-22(5)49-41-28)33(45)38-26(18-25-14-15-36-32(25)44)12-13-29(42)48-19-24-10-8-7-9-11-24/h7-13,17,20-21,23,25-27,30H,14-16,18-19H2,1-6H3,(H,36,44)(H,37,46)(H,38,45)(H,39,47)(H,40,43)/b13-12-/t23-,25-,26+,27-,30-/m0/s1
InChI Key IDBWWEGDLCFCTD-NQJFWITJSA-N
Bioactivity Comments
PRD_002214 inhibits hCoV-229E MPRO with a Ki of 1.67 μM, and SARS-CoV MPROwith a Ki of 9 μM in vitro [2]. hCoV-229E replication is inhibited by PRD_002214 (IC50 4 μM). A dissociation constant (Ki) for the PRD_002214 interaction with SARS-CoV-2 MPRO could not be determined because of its very potent, irreversible and rapid interaction [1].
Selectivity at other protein targets
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
CoV 3C-like (main) protease SARS-CoV Inhibitor Inhibition 5.1 pIC50 - 2
⤷ pIC50 5.1 (IC50 9x10-6 M) [2]
CoV 3C-like (main) protease SARS-CoV-2 Inhibitor Irreversible inhibition - - - 1
⤷ [1]