Pyrazolopyridine Inhibitors of B-Raf<sup>V600E</sup>. Part 1: The Development of Selective, Orally Bioavailable, and Efficacious Inhibitors
作者:Steve Wenglowsky、Li Ren、Kateri A. Ahrendt、Ellen R. Laird、Ignacio Aliagas、Bruno Alicke、Alex J. Buckmelter、Edna F. Choo、Victoria Dinkel、Bainian Feng、Susan L. Gloor、Stephen E. Gould、Stefan Gross、Janet Gunzner-Toste、Joshua D. Hansen、Georgia Hatzivassiliou、Bonnie Liu、Kim Malesky、Simon Mathieu、Brad Newhouse、Nicholas J. Raddatz、Yingqing Ran、Sumeet Rana、Nikole Randolph、Tyler Risom、Joachim Rudolph、Scott Savage、LeAnn T. Selby、Michael Shrag、Kyung Song、Hillary L. Sturgis、Walter C. Voegtli、Zhaoyang Wen、Brandon S. Willis、Richard D. Woessner、Wen-I Wu、Wendy B. Young、Jonas Grina
DOI:10.1021/ml200025q
日期:2011.5.12
The V600E mutation of B-Raf kinase results in constitutive activation of the MAPK signaling pathway and is present in approximately 7% of all cancers. Using structure-based design, a novel series of pyrazolopyridine inhibitors of B-Raf(V600E) was developed. Optimization led to the identification of 3-methoxy pyrazolopyridines 17 and 19, potent, selective, and orally bioavailable agents that inhibited tumor growth in a mouse xenograft model driven by B-Raf(V600E) with no effect on body weight. On the basis of their in vivo efficacy and preliminary safety profiles, 17 and 19 were selected for further preclinical evaluation.