S4-1   Click here for help

GtoPdb Ligand ID: 12321

Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: S4-1 is reported as a small molecule inhibitor of the PD-1/PD-L1 inhibitory immune checkpoint [1] that is exploited for cancer immunotherapy. It promotes dimerisation and internalisation of PD-L1 which reduces the opportunity of signaling via interaction with PD-1. As predicted, S4-1-induced PD-L1/PD-1 pathway blockade promotes T cell activation and reverses the immune inhibitory tumour microenvironment. In vivo, it has demonstrated anti-tumour effects in lung and colorectal cancer models (following intraperitoneal administration). Such small molecules are envisaged as alternatives to the existing anti-PD-L1 and anti-PD-1 monoclonal antibody therapeutics.

S4-1 is commercially available from our sponsors

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 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.

✖
Hydrogen bond acceptors 7
Hydrogen bond donors 3
Rotatable bonds 8
Topological polar surface area 116.17
Molecular weight 460.16
XLogP 3.07
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
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.

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/)

✖
Canonical SMILES OC[C@@H](C(=O)O)NCc1cc2c(cc1OC)C(=O)N(C2=O)c1cccc(c1C)c1ccccc1
Isomeric SMILES OC[C@@H](C(=O)O)NCc1cc2c(C(=O)N(c3c(C)c(c4ccccc4)ccc3)C2=O)cc1OC
InChI InChI=1S/C26H24N2O6/c1-15-18(16-7-4-3-5-8-16)9-6-10-22(15)28-24(30)19-11-17(13-27-21(14-29)26(32)33)23(34-2)12-20(19)25(28)31/h3-12,21,27,29H,13-14H2,1-2H3,(H,32,33)/t21-/m0/s1
InChI Key CUQPAAUFONWYPW-NRFANRHFSA-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/)
Classification Click here for help
Compound class Synthetic organic
IUPAC Name Click here for help
((6-Methoxy-2-(2-methyl-[1,1′-biphenyl]-3-yl)-1,3-dioxoisoindolin-5-yl)methyl)serine
Database Links Click here for help
GtoPdb PubChem SID 479821112
PubChem CID 166642489
Search Google for chemical match using the InChIKey CUQPAAUFONWYPW-NRFANRHFSA-N
Search Google for chemicals with the same backbone CUQPAAUFONWYPW
UniChem Compound Search for chemical match using the InChIKey CUQPAAUFONWYPW-NRFANRHFSA-N
UniChem Connectivity Search for chemical match using the InChIKey CUQPAAUFONWYPW-NRFANRHFSA-N

Product suppliers

View disclaimer

Sponsored products disclaimer

Product supplier links are provided as a service to assist in identifying commercial suppliers of reagents that are mentioned on the IUPHAR/BPS Guide to PHARMACOLOGY database website, and do not imply their endorsement by NC-IUPHAR.

Links are provided in return for sponsorship, used to fund improvements to this database. The sponsorship account is managed and audited by the University of Edinburgh, a charitable body registered in Scotland, SC005336. If you are interested in sponsoring the database, please contact us.

✖

MedChemExpress
PD-1/PD-L1-IN-29 (links to external site)
Cat. No. HY-152240