tasquinimod   Click here for help

GtoPdb Ligand ID: 8098

Synonyms: ABR-215050
Compound class: Synthetic organic
Comment: Tasquinimod is an orally active allosteric inhibitor of HDAC4 [1]. It has antiangiogenic effects.
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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

tasquinimod 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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Click here for structure editor
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 3
Hydrogen bond donors 1
Rotatable bonds 5
Topological polar surface area 71.77
Molecular weight 406.11
XLogP 4.85
No. Lipinski's rules broken 0

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 COc1cccc2c1c(O)c(C(=O)N(c1ccc(cc1)C(F)(F)F)C)c(=O)n2C
Isomeric SMILES COc1cccc2c1c(O)c(C(=O)N(c1ccc(cc1)C(F)(F)F)C)c(=O)n2C
InChI InChI=1S/C20H17F3N2O4/c1-24(12-9-7-11(8-10-12)20(21,22)23)18(27)16-17(26)15-13(25(2)19(16)28)5-4-6-14(15)29-3/h4-10,26H,1-3H3
InChI Key ONDYALNGTUAJDX-UHFFFAOYSA-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
Tasquinimod is being assessed in Phase 2I clinical trials as an antineoplastic in patients with metastatic castrate resistant prostate cancer (see NCT01234311 and NCT02057666). A Phase 2 study is underway for hepatocellular, ovarian, renal cell and gastric cancers (NCT01743469).
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Tasquinimod is reported to bind to the regulatory Zn2+ binding domain of HDAC4 [1], preventing it from complexing with N-CoR (nuclear receptor co-repressor 1) and HDAC3, which in turn reduces histone deacetylation and subsequent transcription factor binding (such as hypoxia inducible factor 1α) and gene transcription. This effect prevents the epigenetic reprogramming of cells within the tumour microenvironment which is essential for their continued growth and survival in this increasingly hostile space. Neo-angiogenesis is thereby inhibited and the tumour cells die.