Discovery of Clinical Candidate 1-{[(2S,3S,4S)-3-Ethyl-4-fluoro-5-oxopyrrolidin-2-yl]methoxy}-7-methoxyisoquinoline-6-carboxamide (PF-06650833), a Potent, Selective Inhibitor of Interleukin-1 Receptor Associated Kinase 4 (IRAK4), by Fragment-Based Drug Design.
Lee, K.L., Ambler, C.M., Anderson, D.R., Boscoe, B.P., Bree, A.G., Brodfuehrer, J.I., Chang, J.S., Choi, C., Chung, S., Curran, K.J., Day, J.E., Dehnhardt, C.M., Dower, K., Drozda, S.E., Frisbie, R.K., Gavrin, L.K., Goldberg, J.A., Han, S., Hegen, M., Hepworth, D., Hope, H.R., Kamtekar, S., Kilty, I.C., Lee, A., Lin, L.L., Lovering, F.E., Lowe, M.D., Mathias, J.P., Morgan, H.M., Murphy, E.A., Papaioannou, N., Patny, A., Pierce, B.S., Rao, V.R., Saiah, E., Samardjiev, I.J., Samas, B.M., Shen, M.W.H., Shin, J.H., Soutter, H.H., Strohbach, J.W., Symanowicz, P.T., Thomason, J.R., Trzupek, J.D., Vargas, R., Vincent, F., Yan, J., Zapf, C.W., Wright, S.W.(2017) J Med Chem 60: 5521-5542
- PubMed: 28498658 
- DOI: https://doi.org/10.1021/acs.jmedchem.7b00231
- Primary Citation of Related Structures:  
5UIQ, 5UIR, 5UIS, 5UIT, 5UIU - PubMed Abstract: 
Through fragment-based drug design focused on engaging the active site of IRAK4 and leveraging three-dimensional topology in a ligand-efficient manner, a micromolar hit identified from a screen of a Pfizer fragment library was optimized to afford IRAK4 inhibitors with nanomolar potency in cellular assays ...