Lead Optimization of Spiropyrazolopyridones: A New and Potent Class of Dengue Virus Inhibitors
摘要:
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.
[EN] SPIROPYRAZOLOPYRIDINE DERIVATIVES AND USES THEREOF FOR THE TREATMENT OF VIRAL INFECTIONS<br/>[FR] DÉRIVÉS DE SPIROPYRAZOLOPYRIDINE ET LEURS UTILISATIONS POUR LE TRAITEMENT D'INFECTIONS VIRALES
申请人:NOVARTIS AG
公开号:WO2014167528A1
公开(公告)日:2014-10-16
A compound of Formula (I) is provided that has been shown to be useful for treating a disease caused by a viral infection: (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, X1, X2, X3 and X4, are as defined herein.