cinnarizine   Click here for help

GtoPdb Ligand ID: 9072

Synonyms: R-1575 | Stugeron®
Approved drug PDB Ligand
cinnarizine is an approved drug (UK (1989))
Compound class: Synthetic organic
Comment: Cinnarizine is used primarily for its anti-histaminic activity, but it also has anti-cholinergic and calcium channel blocking effects, which may account for some of its side-effects.The INN record for this drug specifies cinnarizine clofibrate (PubChem CID 6436096). Cinnarizine is the parent molecule of the fluorine derivative flunarizine. Both of these compounds induce parkinsonism as an adverse effect [2,4], likely due to antagonism of D2 receptors by the parent molecules and/or some of their bioactive metabolites [3].
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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 more information in the IUPHAR Pharmacology Education Project: cinnarizine

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 0
Rotatable bonds 6
Topological polar surface area 6.48
Molecular weight 368.23
XLogP 5.3
No. Lipinski's rules broken 1
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 c1ccc(cc1)C=CCN1CCN(CC1)C(c1ccccc1)c1ccccc1
Isomeric SMILES c1ccc(cc1)/C=C/CN1CCN(CC1)C(c1ccccc1)c1ccccc1
InChI InChI=1S/C26H28N2/c1-4-11-23(12-5-1)13-10-18-27-19-21-28(22-20-27)26(24-14-6-2-7-15-24)25-16-8-3-9-17-25/h1-17,26H,18-22H2/b13-10+
InChI Key DERZBLKQOCDDDZ-JLHYYAGUSA-N
No information available.
Summary of Clinical Use Click here for help
Used to treat motion sickness and for the control of vestibular disorders such as vertigo, tinnitus, nausea and vomiting such as is seen in Meniere's Disease.
This drug does not appear to have US FDA or EMA marketing authorisation, but it has been approved for use by many national authorisation agencies.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Cinnarizine interferes with the signal transmission between the vestibular apparatus of the inner ear and the vomiting centre of the hypothalamus, to abolish the disparity of signal processing between inner ear motion receptors and the visual senses which is believed to drive feelings of nausea and promote vomiting in indicated conditions.
Cinnarizine's calcium channel blocking activity causes cerebral vasorelaxation, with potential cognitive function enhancing (nootropic) ability.
External links Click here for help
For extended ADME data see the following:

Electronic Medicines Compendium (eMC)