ALK5 kinase inhibitory activity and synthesis of 2,3,4-substituted 5,5-dimethyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazoles
| Authors | |
|---|---|
| Year of publication | 2017 |
| Type | Article in Periodical |
| Magazine / Source | European Journal of Medicinal Chemistry |
| MU Faculty or unit | |
| Citation | |
| Web | http://dx.doi.org/10.1016/j.ejmech.2017.01.018 |
| Doi | http://dx.doi.org/10.1016/j.ejmech.2017.01.018 |
| Field | Organic chemistry |
| Keywords | Transforming growth factor beta receptor I; Protein kinase; Inhibitor; Substituted pyrrolo[1.2-b]pyrazoles |
| Description | A series of 2,3,4-substituted 5,5-dimethyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazoles (DPPs) was synthesized and evaluated for their ALK5 inhibition activity. The most potent compounds displayed submicromolar IC50 values for ALK5. Preliminary profiling of one of the most active compounds in a panel of 50 protein kinases revealed its selectivity for ALK5. In cells, the compounds caused dose-dependent dephosphorylation of SMAD2, a well-established substrate of ALK5. In addition, the compounds blocked translocation of SMAD2/3 to nuclei of cells stimulated with TGFb and the protein remained predominantly in cytoplasm, further confirming their molecular target. Therefore, novel DPP derivatives proved to be active as ALK5 inhibitors. |
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