compound 5a [PMID: 27536893]   Click here for help

GtoPdb Ligand ID: 9300

Compound class: Synthetic organic
Comment: Compound 5a causes microtubule fragmentation via modulation of the hydrolase activity of katanin [1]. The precise binding site has not been determined, but could reside within catalytic site of KATNA1 (p60 subunit) due to the purine scaffold of 5a. A docking model suggests that 5a may bind in a position which stabilizes the p60 structure and enhances the microtubule severing activity of katanin.
Katanin-modulating compounds could provide an alternative to vinca alkaloid and taxane microtubule targeting agents (MTAs), which suffer from issues of drug-induced resistance developing in clinical use.
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 2
Rotatable bonds 6
Topological polar surface area 124.6
Molecular weight 405.14
XLogP 2.29
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 CCOc1ccc(cc1)c1nc(C(=O)N)c2c(n1)n(c(=O)[nH]2)c1ccccc1OC
Isomeric SMILES CCOc1ccc(cc1)c1nc(C(=O)N)c2c(n1)n(c(=O)[nH]2)c1ccccc1OC
InChI InChI=1S/C21H19N5O4/c1-3-30-13-10-8-12(9-11-13)19-23-16(18(22)27)17-20(25-19)26(21(28)24-17)14-6-4-5-7-15(14)29-2/h4-11H,3H2,1-2H3,(H2,22,27)(H,24,28)
InChI Key FFKCRLSRMMVTAN-UHFFFAOYSA-N
Bioactivity Comments
Compound 5a-induced microtubule fragmentation leads to G2/M cell cycle arrest and intrinsic apoptosis in lung cancer cells with growth-inhibitory IC50s for several cell lines between 230-330nM [1].