compound 47 [PMID: 35640059]   Click here for help

GtoPdb Ligand ID: 12017

Compound class: Synthetic organic
Comment: Compound 47 is a selective prostaglandin E receptor 4 (EP4 receptor) antagonist [1], that was designed to counter the immunosuppressive effect of EP4/PGE2 signalling in the tumour microenvironment.
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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 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 5
Hydrogen bond donors 2
Rotatable bonds 7
Topological polar surface area 103.87
Molecular weight 425.11
XLogP 2.98
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 Fc1ccc(cc1)Cc1sc2c(c1C(=O)NCc1ccc(cc1)C(=O)O)CCOC2
Isomeric SMILES O=C(NCc1ccc(C(=O)O)cc1)c1c(Cc2ccc(F)cc2)sc2c1CCOC2
InChI InChI=1S/C23H20FNO4S/c24-17-7-3-14(4-8-17)11-19-21(18-9-10-29-13-20(18)30-19)22(26)25-12-15-1-5-16(6-2-15)23(27)28/h1-8H,9-13H2,(H,25,26)(H,27,28)
InChI Key WXDKVCQSVUOFSK-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/)
Bioactivity Comments
In the mouse CT26 colon carcinoma model compound 47 demonstrated anti-tumour activity as a monotherapy, and enhanced the anti-tumour immune response when combined with an anti-PD-1 immune checkpoint antibody [1]. The in vitro IC50 of compound 47 at the EP1, EP2 and EP3 receptors was determined to be >10 μM.
Selectivity at GPCRs
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
EP4 receptor Hs Antagonist Antagonist 8.3 pIC50 - 1
⤷ pIC50 8.3 (IC50 5x10-9 M) [1]
Description: Measuring antagonism of PGE2-mediated calcium flux in HEK293 cells transiently expressing hEP4, using Promega's proprietary GloSensor cAMP assay system