VRT-043198   Click here for help

GtoPdb Ligand ID: 9034

PDB Ligand Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: VRT-043198 generated from the prodrug belnacasan (VX-765) is a potent and selective inhibitor of caspase-1 from Vertex. When administered orally to mice, it inhibits lipopolysaccharide-induced cytokine secretion and reduces disease severity and the expression of inflammatory mediators in models of rheumatoid arthritis and skin inflammation, suggesting that as a cytokine inhibitor it could be useful for treatment of inflammatory diseases [1].
Click here for help

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.

✖

View interactive charts of activity data across species
2D Structure
Click here for help

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.

✖
Click here for structure editor
Physico-chemical Properties
Click here for help

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.

✖
Hydrogen bond acceptors 10
Hydrogen bond donors 4
Rotatable bonds 12
Topological polar surface area 158.9
Molecular weight 480.18
XLogP 1.34
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
Click here for help

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.

✖
Canonical SMILES O=CC(NC(=O)C1CCCN1C(=O)C(C(C)(C)C)NC(=O)c1ccc(c(c1)Cl)N)CC(=O)O
Isomeric SMILES O=C[C@@H](NC(=O)[C@@H]1CCCN1C(=O)[C@H](C(C)(C)C)NC(=O)c1ccc(c(c1)Cl)N)CC(=O)O
InChI InChI=1S/C22H29ClN4O6/c1-22(2,3)18(26-19(31)12-6-7-15(24)14(23)9-12)21(33)27-8-4-5-16(27)20(32)25-13(11-28)10-17(29)30/h6-7,9,11,13,16,18H,4-5,8,10,24H2,1-3H3,(H,25,32)(H,26,31)(H,29,30)/t13-,16-,18+/m0/s1
InChI Key SOZONDBMOYWSRW-QANKJYHBSA-N
Bioactivity Comments
Inhibits caspase-1 (Ki = 0.8 nM) and caspase-4 (Ki < 0.6 nM) and shows 100- to 10,000-fold selectivity against caspases -3 and -6 to -9. Inhibits the release of interleukin (IL)-1β and IL-18, but has little effect on the release of several other cytokines, including IL-1α, tumor necrosis factor-α, IL-6 and IL-8 [1].
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
Caspase 4 Hs Inhibitor Inhibition 9.4 pKi - 1
⤷ pKi 9.4 (Ki 4x10-10 M) [1]
Caspase 1 Primary target of this compound Hs Inhibitor Inhibition 9.1 pKi - 1
⤷ pKi 9.1 (Ki 8x10-10 M) Derived from pro-drug belnacasan [1]