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
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 CDK toolkit. 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
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.

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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
No information available.
Summary of Clinical Use Click here for help
Olorinab (APD371) was evaluated in clinical study for efficacy in the management of visceral pain, specifically the abdominal pain associated with Crohn's disease and IBD. A press release from Arena Pharmaceuticals in March 2021 stated that olorinab had missed its primary endpoint of reducing abdominal pain scores in Phase 2b IBD study NCT04043455.
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT03155945 Tolerability, Pharmacokinetics, and Efficacy of APD371 in Subjects With Crohn's Disease Experiencing Abdominal Pain Phase 2 Interventional Arena Pharmaceuticals