MK-8776   Click here for help

GtoPdb Ligand ID: 7943

Synonyms: MK 8776 | SCH 900776
Compound class: Synthetic organic
Comment: The discovery and synthesis of MK-8776 (a.k.a. SCH 900776) is described in [2], where it is compound 9b. In the article by Guzi et al (2011) [1], the compound is shown with an (R) stereo center (see PubChem CID 46239015), whereas it is shown with no stereochemistry by Labroli et al (2011). MK-8776 is primarily an inhibitor of checkpoint kinase 1 (CHK1), with minimal inhibitory activity on cyclin dependent kinase 2 (CDK2).
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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 5
Hydrogen bond donors 2
Rotatable bonds 2
Topological polar surface area 86.06
Molecular weight 375.08
XLogP 1.73
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 Cn1ncc(c1)c1cnn2c1nc(C1CCCNC1)c(c2N)Br
Isomeric SMILES Cn1ncc(c1)c1cnn2c1nc(C1CCCNC1)c(c2N)Br
InChI InChI=1S/C15H18BrN7/c1-22-8-10(6-19-22)11-7-20-23-14(17)12(16)13(21-15(11)23)9-3-2-4-18-5-9/h6-9,18H,2-5,17H2,1H3
InChI Key GMIZZEXBPRLVIV-UHFFFAOYSA-N
No information available.
Summary of Clinical Use Click here for help
There is one active Phase 2 clinical trial registered with ClinicalTrials.gov. NCT01870596 is addressing the use of SCH 900776 (= MK-8776) in combination with the antimetabolite antineoplastic agent cytarabine, in patients with relapsed acute myeloid leukemia.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
MK-8776 targets the replication checpoint by inhibiting CHK1 [1]. CHK1 inhibition interacts synergistically with DNA antimetabolite agents in vitro and in vivo to selectively induce double-strand DNA breaks and cell death in tumour cells [1].