PMID: 24900315

Authors:

Wenglowsky S, Ren L, Ahrendt KA, Laird ER, Aliagas I, Alicke B, Buckmelter AJ, Choo EF, Dinkel V, Feng B, Gloor SL, Gould SE, Gross S, Gunzner-Toste J, Hansen JD, Hatzivassiliou G, Liu B, Malesky K, Mathieu S, Newhouse B, Raddatz NJ, Ran Y, Rana S, Randolph N, Risom T, Rudolph J, Savage S, Selby LT, Shrag M, Song K, Sturgis HL, Voegtli WC, Wen Z, Willis BS, Woessner RD, Wu WI, Young WB, Grina J

Title:

Pyrazolopyridine Inhibitors of B-Raf(V600E). Part 1: The Development of Selective, Orally Bioavailable, and Efficacious Inhibitors.

Journal:

ACS Med Chem Lett. 2011 Mar 8;2(5):342-7. doi: 10.1021/ml200025q. eCollection, 2011 May 12.

Abstract:

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.