Optimization of Potent and Selective Quinazolinediones: Inhibitors of Respiratory Syncytial Virus That Block RNA-Dependent RNA-Polymerase Complex Activity
作者:Daljit S. Matharu、Daniel P. Flaherty、Denise S. Simpson、Chad E. Schroeder、Donghoon Chung、Dan Yan、James W. Noah、Colleen B. Jonsson、E. Lucile White、Jeffrey Aubé、Richard K. Plemper、William E. Severson、Jennifer E. Golden
DOI:10.1021/jm500902x
日期:2014.12.26
A quinazolinedione-derived screening hit 2 was discovered with cellular antiviral activity against respiratory syncytial virus (CPE EC50 = 2.1 mu M), moderate efficacy in reducing viral progeny (4.2 log at 10 mu M), and marginal cytotoxic liability (selectivity index, SI similar to 24). Scaffold optimization delivered analogs with improved potency and selectivity profiles. Most notable were compounds 15 and 19 (EC50 = 300-500 nM, CC50 > 50 mu M, SI > 100), which significantly reduced viral titer (>400,000-fold), and several analogs were shown to block the activity of the RNA-dependent RNA-polymerase complex of RSV.