Discovery and Optimization of a Novel Series of Potent Mutant B-Raf<sup>V600E</sup> Selective Kinase Inhibitors
作者:Melissa M. Vasbinder、Brian Aquila、Martin Augustin、Huawei Chen、Tony Cheung、Donald Cook、Lisa Drew、Benjamin P. Fauber、Steve Glossop、Michael Grondine、Edward Hennessy、Jeffrey Johannes、Stephen Lee、Paul Lyne、Mario Mörtl、Charles Omer、Sangeetha Palakurthi、Timothy Pontz、Jon Read、Li Sha、Minhui Shen、Stefan Steinbacher、Haixia Wang、Allan Wu、Minwei Ye
DOI:10.1021/jm301658d
日期:2013.3.14
B-Raf represents an attractive target for anticancer therapy and the development of small molecule B-Raf inhibitors has delivered new therapies for metastatic melanoma patients. We have discovered a novel class of small molecules that inhibit mutant B-Raf(V600E) kinase activity both in vitro and in vivo. Investigations into the structure-activity relationships of the series are presented along with efforts to improve upon the cellular potency, solubility, and phannacokinetic profile. Compounds selectively inhibited B-Raf(V600E) in vitro and showed preferential antiproliferative activity in mutant B-Raf(V600E) cell lines and exhibited selectivity in a kinase panel against other kinases. Examples from this series inhibit growth of a B-Raf(V600E) A375 xenograft in vivo at a well-tolerated dose. In addition, aminoquinazolines described herein were shown to display pERK elevation in nonmutant B-Raf cell lines in vitro.