salirasib   Click here for help

GtoPdb Ligand ID: 6281

Synonyms: farnesylthiosalicylic acid | S-farnesylthiosalicylic acid
Compound class: Synthetic organic
Comment: Salirasib (trans-farnesylthiosalicylic acid) is an investigational small molecule which indirectly inhibits RAS protein activity. It is a salicylic acid derivative with potential antineoplastic activity.
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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

salirasib is commercially available from our sponsors

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 Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/). 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 2
Hydrogen bond donors 1
Rotatable bonds 10
Topological polar surface area 62.6
Molecular weight 358.2
XLogP 6.96
No. Lipinski's rules broken 1

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
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.

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)

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Canonical SMILES CC(=CCSc1ccccc1C(=O)O)CCC=C(CCC=C(C)C)C
Isomeric SMILES C/C(=C\CSc1ccccc1C(=O)O)/CC/C=C(/CCC=C(C)C)\C
InChI InChI=1S/C22H30O2S/c1-17(2)9-7-10-18(3)11-8-12-19(4)15-16-25-21-14-6-5-13-20(21)22(23)24/h5-6,9,11,13-15H,7-8,10,12,16H2,1-4H3,(H,23,24)/b18-11+,19-15+
InChI Key WUILNKCFCLNXOK-CFBAGHHKSA-N

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
No information available.
Summary of Clinical Use Click here for help
A single Phase 2 clinical trial (NCT00531401) of salirasib in non-small cell lung cancer has been completed. Study results indicate that salirasib had insufficient activity in KRAS mutant lung adenocarcinoma to merit further evaluation [5].
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Salirasib interferes with docking of active GTP-bound RAS proteins to cell membranes. Salirasib mimics the farnesylcysteine moiety of the CAAX farnesylation motif at the COOH terminus of RAS [3]. Interfering with the ability of RAS proteins to anchor to subcellular membranes leads to increased proteolytic degradation of cytosolic RAS and reduced total cellular RAS [6].