Design, Synthesis and Biological Evaluation of Chromone-based p38 MAP Kinase Inhibitors

• A series of 3-(4-fluorophenyl)-2-(4-pyridyl)-chromone derivs. were synthesized and evaluated as p38 MAP kinase inhibitors. Introduction of an amino group in the 2-position of the pyridyl moiety gave p38 inhibitors with IC50 values in the low nanomolar range (e.g. 8a; IC50 = 17 nm). Addnl., the inhibitors (8a and 8e) demonstrate an excellent selectivity profile towards the p38 kinase among other kinases, as well as inhibition (8e) of p38 signaling in human breast cancer cells. [on SciFinder(R)]

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