MK-8719   Click here for help

GtoPdb Ligand ID: 10508

Synonyms: compound 42 [PMID: 31487175] | MK8719
PDB Ligand
Compound class: Synthetic organic
Comment: MK-8719 is an inhibitor of O-GlcNAcase (OGA) that is being investigated as a disease modifying strategy for neurodegenerative tauopathies (including Alzheimer's disease, Pick's disease and progressive supranuclear palsy) [3]. Development of MK-8719 is the result of a partnership between Merck and Alectos Therapeutics. MK-8719 was designed using on the scaffold of the carbohydrate-based lead molecule thiamet-G and used medicinal chemistry and SAR to improve on thiamet-G's less than favourable drug-like properties (e.g. potency, selectivity, CNS exposure and metabolic stability). The current status of OGA inhibitor development as a novel preventative mechanism in neurodegeneration and age-related memory impairment is reveiwed by Rudrawar and Ryan (2019) [2].
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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 3
Rotatable bonds 3
Topological polar surface area 99.38
Molecular weight 268.07
XLogP 0.26
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 CCNC1=NC2C(S1)OC(C(C2O)O)C(F)F
Isomeric SMILES CCNC1=N[C@H]2[C@@H](S1)O[C@@H]([C@H]([C@@H]2O)O)C(F)F
InChI InChI=1S/C9H14F2N2O3S/c1-2-12-9-13-3-4(14)5(15)6(7(10)11)16-8(3)17-9/h3-8,14-15H,2H2,1H3,(H,12,13)/t3-,4-,5+,6+,8-/m1/s1
InChI Key UDQTXCHQKHIQMH-KYGLGHNPSA-N
Bioactivity Comments
MK-8719 exhibits favourable pharmacokinetic and pharmacodynamic profiles. Notably it is potent, selective and metabolically stable, and achieves high central nervous system (CNS) penetration. MK-8719 does not exhibit a β-hexosaminidase inhibition liability.
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
O-GlcNAcase Hs Inhibitor Inhibition 8.1 pKi - 3
⤷ pKi 8.1 (Ki 7.9x10-9 M) [3]
Description: In vitro enzyme inhibition assay.
O-GlcNAcase Rn Inhibitor Inhibition 7.3 pEC50 - 3
⤷ pEC50 7.3 (EC50 5.27x10-8 M) [3]
Description: Determined in an ELISA-based assay with rat PC12 cells to measure EC50 values for elevation of all protein O-GlcNAc levels in the presence of test compound.