Discovery of a Novel, First-in-Class, Orally Bioavailable Azaindole Inhibitor (VX-787) of Influenza PB2
作者:Michael P. Clark、Mark W. Ledeboer、Ioana Davies、Randal A. Byrn、Steven M. Jones、Emanuele Perola、Alice Tsai、Marc Jacobs、Kwame Nti-Addae、Upul K. Bandarage、Michael J. Boyd、Randy S. Bethiel、John J. Court、Hongbo Deng、John P. Duffy、Warren A. Dorsch、Luc J. Farmer、Huai Gao、Wenxin Gu、Katrina Jackson、Dylan H. Jacobs、Joseph M. Kennedy、Brian Ledford、Jianglin Liang、François Maltais、Mark Murcko、Tiansheng Wang、M. Woods Wannamaker、Hamilton B. Bennett、Joshua R. Leeman、Colleen McNeil、William P. Taylor、Christine Memmott、Min Jiang、Rene Rijnbrand、Christopher Bral、Ursula Germann、Azin Nezami、Yuegang Zhang、Francesco G. Salituro、Youssef L. Bennani、Paul S. Charifson
DOI:10.1021/jm5007275
日期:2014.8.14
In our effort to develop agents for the treatment of influenza, a phenotypic screening approach utilizing a cell protection assay identified a series of azaindole based inhibitors of the cap-snatching function of the PB2 subunit of the influenza A viral polymerase complex. Using a bDNA viral replication assay (Wagaman, P. C.; Leong, M. A.; Simmen, K. A. Development of a novel influenza A antiviral assay. J. Virol. Methods 2002, 105, 105-114) in cells as a direct measure of antiviral activity, we discovered a set of cyclohexyl carboxylic acid analogues, highlighted by VX-787 (2). Compound 2 shows strong potency versus multiple influenza A strains, including pandemic 2009 H1N1 and avian H5N1 flu strains, and shows an efficacy profile in a mouse influenza model even when treatment was administered 48 h after infection. Compound 2 represents a first-in-class, orally bioavailable, novel compound that offers potential for the treatment of both pandemic and seasonal influenza and has a distinct advantage over the current standard of care treatments including potency, efficacy, and extended treatment window.