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balumorexton   Click here for help

GtoPdb Ligand ID: 14378

Synonyms: example 77 [WO2024095133]
Compound class: Synthetic organic
Comment: The chemical structure for balumorexton was obtained from WHO INN proposed list 134 (Feb 2026), in which it is described as an orexin receptor agonist and potential narcolepsy therapeutic. The structure is claimed in Takeda patent WO2024095133 [1]. At time of curation (Feb 2026) Takeda's declared development pipeline contained two OX2 receptor agonists, oveporexton (TAK-861) and TAK-360, so balumorexton is likely the INN for the latter candidate. Balumorexton is a benzisoxazole-containing compound.
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 6
Hydrogen bond donors 1
Rotatable bonds 4
Topological polar surface area 99.69
Molecular weight 518.39
XLogP 1.17
No. Lipinski's rules broken 1

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 CS(=O)(=O)N[C@@H]1CN2C(=CN(C3=NOC4=CC=C(C(=C43)C5=C(C=C(C=C5F)F)F)F)C2=O)C1(F)F
Isomeric SMILES FC1([C@@H](CN2C(N(C=C21)C3=NOC4=C3C(=C(C=C4)F)C5=C(C=C(C=C5F)F)F)=O)NS(=O)(=O)C)F
InChI InChI=1S/C20H12F6N4O4S/c1-35(32,33)28-13-6-29-14(20(13,25)26)7-30(19(29)31)18-17-12(34-27-18)3-2-9(22)16(17)15-10(23)4-8(21)5-11(15)24/h2-5,7,13,28H,6H2,1H3/t13-/m1/s1
InChI Key QYIMOBVUEGPQSO-CYBMUJFWSA-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
Data in the patent [1] demonstrates that is a full OX2 receptor agonist, inducing 100% of the activation compared to the orexin peptide control in a fluorescent Ca2+ signaling assay.