olorinab   Click here for help

GtoPdb Ligand ID: 10058

Synonyms: APD-371 | APD371 | compound 6 [PMID: 29259753]
PDB Ligand
Compound class: Synthetic organic
Comment: Olorinab (APD371) is a cannabinoid CB2 receptor agonist that was developed by Arena Pharmaceuticals as a potential treatment for chronic pain [1]. In vitro, APD371 is as efficacious as the CB2 receptor full agonist CP55940 (as determined by measuring and comparing Emax values), and has limited tachyphylaxis liability (i.e. it does cause agonist-induced desensitization by disrupting recycling of internalized agonist-activated receptors back to the plasma membrane) .
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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

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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 6
Topological polar surface area 106.46
Molecular weight 357.18
XLogP 1.19
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 OCC(C(C)(C)C)NC(=O)c1nn(c2c1CC1C2C1)c1ncc[n+](c1)[O-]
Isomeric SMILES OC[C@H](C(C)(C)C)NC(=O)c1nn(c2c1C[C@H]1[C@@H]2C1)c1ncc[n+](c1)[O-]
InChI InChI=1S/C18H23N5O3/c1-18(2,3)13(9-24)20-17(25)15-12-7-10-6-11(10)16(12)23(21-15)14-8-22(26)5-4-19-14/h4-5,8,10-11,13,24H,6-7,9H2,1-3H3,(H,20,25)/t10-,11-,13+/m0/s1
InChI Key ACSQLTBPYZSGBA-GMXVVIOVSA-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
APD371 is highly selective for CB2 over CB1 in binding and functional assays, and appears to be devoid of CNS activity at CB1 in vivo (indicating peripheral restriction of its activity) [1]. In preclinical testing APD371 was found to be orally active and efficacious in a rat model of osteoarthritis pain.
Selectivity at GPCRs
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
CB2 receptor Primary target of this compound Hs Agonist Full agonist 8.2 pEC50 - 1
⤷ pEC50 8.2 (EC50 6.2x10-9 M) [1]
Description: In a DiscoverX PathHunter β-arrestin recruitment assay.
CB2 receptor Rn Agonist Full agonist 8.1 pEC50 - 1
⤷ pEC50 8.1 (EC50 7.6x10-9 M) [1]
Description: In a DiscoverX PathHunter β-arrestin recruitment assay.
CB1 receptor Hs Agonist Agonist <5.0 pEC50 - 1
⤷ pEC50 <5.0 (EC50 >1x10-5 M) [1]
Description: In a DiscoverX PathHunter β-arrestin recruitment assay.
CB1 receptor Rn Agonist Agonist <5.0 pEC50 - 1
⤷ pEC50 <5.0 (EC50 >1x10-5 M) [1]
Description: In a DiscoverX PathHunter β-arrestin recruitment assay.