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Eact   Click here for help

GtoPdb Ligand ID: 13562

Synonyms: Eact
Compound class: Synthetic organic
Comment: Eact is a calcium-activated chloride channel TMEM16A (ANO1) activator [3]. It stimulates the TMEM16A Cl− current in in vitro cell systems. However, recent data have challenged this direct activation of TMEM16A, and indicate that Eact induces an increase in intracellular Ca2+ levels through an agonist effect on TRPV1 and TRPV4 [1-2].

Eact is commercially available from our sponsors

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 7
Hydrogen bond donors 0
Rotatable bonds 10
Topological polar surface area 94.89
Molecular weight 428.5
XLogP 2.29
No. Lipinski's rules broken 0

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 COCCN(C(=O)C1=CC(=C(C(=C1)OC)OC)OC)C2=NC(=CS2)C3=CC=CC=C3
Isomeric SMILES COCCN(C(=O)C1=CC(OC)=C(OC)C(OC)=C1)C2=NC(=CS2)C3=CC=CC=C3
InChI InChI=1S/C22H24N2O5S/c1-26-11-10-24(22-23-17(14-30-22)15-8-6-5-7-9-15)21(25)16-12-18(27-2)20(29-4)19(13-16)28-3/h5-9,12-14H,10-11H2,1-4H3
InChI Key ZUXNHFFVQWADJL-UHFFFAOYSA-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/)
References
1. Genovese M, Borrelli A, Venturini A, Guidone D, Caci E, Viscido G, Gambardella G, di Bernardo D, Scudieri P, Galietta LJV. (2019)
TRPV4 and purinergic receptor signalling pathways are separately linked in airway epithelia to CFTR and TMEM16A chloride channels.
J Physiol, 597 (24): 5859-5878. [PMID:31622498]
2. Liu S, Feng J, Luo J, Yang P, Brett TJ, Hu H. (2016)
Eact, a small molecule activator of TMEM16A, activates TRPV1 and elicits pain- and itch-related behaviours.
Br J Pharmacol, 173 (7): 1208-18. [PMID:26756551]
3. Verkman AS, Namkung W. (2017)
Small molecule activators of calcium-activated chloride channels and methods of use.
Patent number: US9790218B2. Assignee: University of California. Priority date: 03/08/2012. Publication date: 17/10/2017.