zileuton   Click here for help

GtoPdb Ligand ID: 5297

Synonyms: A-64077 | ZYFLO®
Approved drug Immunopharmacology Ligand
zileuton is an approved drug (FDA (1996))
Compound class: Synthetic organic
Comment: Zileuton is an orally active 5-LOX inhibitor.
The approved drug is a racemic mixture of R(+) and S(-) enantiomers (PubChem CID 10681296 and CID 10220327 respectively), which are both pharmacologically active. The structure shown here does not specify stereochemistry and represents the mixture.
The hepatotoxicity of zileuton is suggested to be due to the N-hydroxyurea group [2].
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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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View more information in the IUPHAR Pharmacology Education Project: zileuton

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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 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 2
Hydrogen bond donors 2
Rotatable bonds 3
Topological polar surface area 94.8
Molecular weight 236.06
XLogP 0.92
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 ON(C(c1cc2c(s1)cccc2)C)C(=O)N
Isomeric SMILES ON(C(c1cc2c(s1)cccc2)C)C(=O)N
InChI InChI=1S/C11H12N2O2S/c1-7(13(15)11(12)14)10-6-8-4-2-3-5-9(8)16-10/h2-7,15H,1H3,(H2,12,14)
InChI Key MWLSOWXNZPKENC-UHFFFAOYSA-N
No information available.
Summary of Clinical Use Click here for help
Used in the prophylaxis and chronic treatment of asthma.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Through its inhibition of 5-lipoxygenase, zileuton inhibits the formation of leukotrienes LTB4, LTC4, LTD4, and LTE4, which are formed from arachidonic acid in the reaction catalysed by this enzyme. An additional activity of zileuton is direct reduction of sebaceous lipids production [5].
Pharmacokinetics Click here for help
Organ function impairment
Zileuton should not be prescribed for patients with liver function impairment as it causes side effects including liver enzyme elevation.
External links Click here for help
For extended ADME data see the following:

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