pralnacasan   Click here for help

GtoPdb Ligand ID: 6467

Synonyms: VX-740 | VX740
Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: Pralnacasan (VX-740) is a selective, non-peptide caspase 1 inhibitor that was developed by Vertex for anti-inflammatory potential. Inhibition of caspase 1 is a small molecule strategy developed as an alternative to the use of anti-IL-1β neutralising antibodies, such as canakinumab, or the dimeric fusion protein rilonacept that acts as a IL-1 trap.
Pralnacasan is a prodrug whose active metabolite is VRT-018858 [2].
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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 2
Rotatable bonds 8
Topological polar surface area 147.24
Molecular weight 523.21
XLogP 0.75
No. Lipinski's rules broken 1
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 CCOC1OC(=O)CC1NC(=O)C1CCCN2N1C(=O)C(CCC2=O)NC(=O)c1nccc2c1cccc2
Isomeric SMILES CCO[C@@H]1OC(=O)C[C@@H]1NC(=O)[C@@H]1CCCN2N1C(=O)[C@H](CCC2=O)NC(=O)c1nccc2c1cccc2
InChI InChI=1S/C26H29N5O7/c1-2-37-26-18(14-21(33)38-26)29-23(34)19-8-5-13-30-20(32)10-9-17(25(36)31(19)30)28-24(35)22-16-7-4-3-6-15(16)11-12-27-22/h3-4,6-7,11-12,17-19,26H,2,5,8-10,13-14H2,1H3,(H,28,35)(H,29,34)/t17-,18-,19-,26+/m0/s1
InChI Key CXAGHAZMQSCAKJ-WAHHBDPQSA-N
References
1. Linton SD. (2005)
Caspase inhibitors: a pharmaceutical industry perspective.
Curr Top Med Chem, 5 (16): 1697-717. [PMID:16375749]
2. Ross J, Brough D, Gibson RM, Loddick SA, Rothwell NJ. (2007)
A selective, non-peptide caspase-1 inhibitor, VRT-018858, markedly reduces brain damage induced by transient ischemia in the rat.
Neuropharmacology, 53 (5): 638-42. [PMID:17845807]
3. Wannamaker W, Davies R, Namchuk M, Pollard J, Ford P, Ku G, Decker C, Charifson P, Weber P, Germann UA et al.. (2007)
(S)-1-((S)-2-{[1-(4-amino-3-chloro-phenyl)-methanoyl]-amino}-3,3-dimethyl-butanoyl)-pyrrolidine-2-carboxylic acid ((2R,3S)-2-ethoxy-5-oxo-tetrahydro-furan-3-yl)-amide (VX-765), an orally available selective interleukin (IL)-converting enzyme/caspase-1 inhibitor, exhibits potent anti-inflammatory activities by inhibiting the release of IL-1beta and IL-18.
J Pharmacol Exp Ther, 321 (2): 509-16. [PMID:17289835]