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Abstract
The benzo[e]pyrimido-[5,4-b]diazepine-6(11H)-one core was discovered as a novel ERK5 (also known as MAPK7 and BMK1) inhibitor scaffold, previously. Further structure-activity relationship studies of this scaffold led to the discovery of ERK5-IN-1 (26) as the most selective and potent ERK5 inhibitor reported to date. 26 potently inhibits ERK5 biochemically with an IC of 0.162 ± 0.006 µM and in cells with a cellular EC for inhibiting epidermal growth factor induced ERK5 autophosphorylation of 0.09 ± 0.03 µM. Furthermore, 26 displays excellent selectivity over other kinases with a KINOMEscan selectivity score (S) of 0.007, and exhibits exceptional bioavailability (F%) of 90% in mice. 26 will serve as a valuable tool compound to investigate the ERK5 signaling pathway and as a starting point for developing an ERK5 directed therapeutic agent.
Original language | English |
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Pages (from-to) | 758-767 |
Number of pages | 10 |
Journal | European Journal of Medicinal Chemistry |
Volume | 70 |
DOIs | |
Publication status | Published - Dec 2013 |
Keywords
- Azepines
- Cells, Cultured
- Dose-Response Relationship, Drug
- Enzyme Activation
- HEK293 Cells
- HeLa Cells
- Humans
- Mitogen-Activated Protein Kinase 7
- Models, Molecular
- Molecular Structure
- Protein Kinase Inhibitors
- Protein-Serine-Threonine Kinases
- Pyrimidines
- Structure-Activity Relationship