(3R,4S)-293B   Click here for help

GtoPdb Ligand ID: 2589

Synonyms: chromanol 239B | LS-185874
Compound class: Synthetic organic
Comment: (3R,4S)-293B acts as an antagonist of the KCNQ1 potassium channel (Kv7.1). The stereo-specific effects of the (3R,4S)-293B and 3S,4R-293B enantiomers has been reported by Seebohm et al. (2001) [2]. Note that some biological activity data may have been generated using the racemic mixture (chromanol 239B) represented by the 'flat' structure with PubChem CID 656731. Additional partially specified stereo-isomers include CID 44275282 and CID 44275281.
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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 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 1
Rotatable bonds 3
Topological polar surface area 99.01
Molecular weight 324.11
XLogP 1.46
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 CCS(=O)(=O)N(C1C(O)C(C)(C)Oc2c1cc(cc2)C#N)C
Isomeric SMILES CCS(=O)(=O)N([C@@H]1[C@@H](O)C(C)(C)Oc2c1cc(cc2)C#N)C
InChI InChI=1S/C15H20N2O4S/c1-5-22(19,20)17(4)13-11-8-10(9-16)6-7-12(11)21-15(2,3)14(13)18/h6-8,13-14,18H,5H2,1-4H3/t13-,14+/m0/s1
InChI Key HVSJHHXUORMCGK-UONOGXRCSA-N
References
1. Dong MQ, Lau CP, Gao Z, Tseng GN, Li GR. (2006)
Characterization of recombinant human cardiac KCNQ1/KCNE1 channels (I (Ks)) stably expressed in HEK 293 cells.
J Membr Biol, 210 (3): 183-92. [PMID:16909339]
2. Seebohm G, Lerche C, Pusch M, Steinmeyer K, Brüggemann A, Busch AE. (2001)
A kinetic study on the stereospecific inhibition of KCNQ1 and I(Ks) by the chromanol 293B.
Br J Pharmacol, 134 (8): 1647-54. [PMID:11739240]