compound 36 [PMID: 21958547]   Click here for help

GtoPdb Ligand ID: 9391

Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: Compound 36 is a selective and irreversible small molecule inhibitor of Bruton's tyrosine kinase (BTK) [1]. The compound is being studied for potential to treat rheumatoid arthritis, having been assessed as effective in preclinical models of the disease.
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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
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 6
Hydrogen bond donors 1
Rotatable bonds 7
Topological polar surface area 65.76
Molecular weight 438.25
XLogP 3.69
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 CN(CC=CC(=O)N(C1CC2C(CC1F)N=C(c1n2cnc1)Nc1ccccc1C)C)C
Isomeric SMILES CN(C/C=C/C(=O)N(C1CC2C(CC1F)N=C(c1n2cnc1)Nc1ccccc1C)C)C
InChI InChI=1S/C24H31FN6O/c1-16-8-5-6-9-18(16)27-24-22-14-26-15-31(22)21-13-20(17(25)12-19(21)28-24)30(4)23(32)10-7-11-29(2)3/h5-10,14-15,17,19-21H,11-13H2,1-4H3,(H,27,28)/b10-7+
InChI Key KJDBCEWMSRFWQY-JXMROGBWSA-N
Bioactivity Comments
In B cell proliferation assays compound 36 inhibits proliferation with an IC50 of 3.41nM [1]. Compound 36 inhibits EGFR with an IC50 of 1.4nM, if a pre-incubation step is included in the assay. The same pre-incubation reduces BTK inhibition from 1.93nM (IC50 ) to 0,7nM.
The kinact/KI value (a measure of the efficiency of covalent inhibitors) for BTK is 53200 (1/M-s) and for EGFR is 101000 (1/M-s), suggesting that compound 36 could potentially inhibit EGFR in cells and tissues.
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
Bruton tyrosine kinase Primary target of this compound Hs Inhibitor Inhibition 8.7 pIC50 - 1
⤷ pIC50 8.7 (IC50 1.93x10-9 M) [1]
SRC proto-oncogene, non-receptor tyrosine kinase Hs Inhibitor Inhibition 6.5 pIC50 - 1
⤷ pIC50 6.5 (IC50 2.98x10-7 M) [1]
LYN proto-oncogene, Src family tyrosine kinase Hs Inhibitor Inhibition 6.2 pIC50 - 1
⤷ pIC50 6.2 (IC50 6.24x10-7 M) [1]
LCK proto-oncogene, Src family tyrosine kinase Hs Inhibitor Inhibition 6.1 pIC50 - 1
⤷ pIC50 6.1 (IC50 7.72x10-7 M) [1]