TAS1553   Click here for help

GtoPdb Ligand ID: 12113

Synonyms: TAS-1553
Compound class: Synthetic organic
Comment: TAS1553 is a small-molecule inhibitor of the interaction between ribonucleotide reductase R1 and R2 subunits [1]. It binds to the R1 subunit. As a rate-limiting enzyme for dNTP production, ribonucleotide reductase is a molecular target for cancer therapeutics, as its inhibition blocks DNA synthesis and inhibits proliferation of tumour cells. TAS1553 is orally bioavailable.
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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 3
Rotatable bonds 7
Topological polar surface area 156.53
Molecular weight 482.08
XLogP 3.74
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 Clc1ccc(c(c1)C(=O)N)S(=O)(=O)N[C@@H]([C@@H](c1c(F)ccc(c1C)C)C)c1n[nH]c(=O)o1
Isomeric SMILES C[C@@H]([C@H](NS(=O)(=O)c1ccc(Cl)cc1C(=O)N)c1n[nH]c(=O)o1)c1c(C)c(C)ccc1F
InChI InChI=1S/C20H20ClFN4O5S/c1-9-4-6-14(22)16(10(9)2)11(3)17(19-24-25-20(28)31-19)26-32(29,30)15-7-5-12(21)8-13(15)18(23)27/h4-8,11,17,26H,1-3H3,(H2,23,27)(H,25,28)/t11-,17+/m1/s1
InChI Key DUYRWEBTZNUILI-DIFFPNOSSA-N
No information available.
Summary of Clinical Use Click here for help
TAS1553 has entered early satge clinical evaluation.
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT04637009 A Study of TAS1553 in Subjects With Relapsed or Refractory Acute Myeloid Leukemia (AML) and Other Myeloid Neoplasms Phase 1 Interventional Astex Pharmaceuticals, Inc.