Lead Optimization of Spiropyrazolopyridones: A New and Potent Class of Dengue Virus Inhibitors
作者:Bin Zou、Wai Ling Chan、Mei Ding、Seh Yong Leong、Shahul Nilar、Peck Gee Seah、Wei Liu、Ratna Karuna、Francesca Blasco、Andy Yip、Alex Chao、Agatha Susila、Hongping Dong、Qing Yin Wang、Hao Ying Xu、Katherine Chan、Kah Fei Wan、Feng Gu、Thierry T. Diagana、Trixie Wagner、Ina Dix、Pei-Yong Shi、Paul W. Smith
DOI:10.1021/ml500521r
日期:2015.3.12
Spiropyrazolopyridone 1 was identified, as a novel dengue virus (DENY) inhibitor, from a DENV serotype 2 (DENV-2) high throughput phenotypic screen. As a general trend within this chemical class, chiral resolution of the racemate revealed that R enantiomer was significantly more potent than the S. Cell based lead optimization of the spiropyrazolopyridones focusing on improving the physico-chemical properties is described. As a result, an optimal compound 14a, with balanced in vitro potency and pharmacokinetic profile, achieved about 1.9 log viremia reduction at 3 X 50 mg/kg (bid) or 3 X 100 mg/kg (QD) oral doses in the dengue in vivo mouse efficacy model.