Abstract
Replacement of the benzimidazole core of allosteric Thumb Pocket 1 HCV NS5B finger loop inhibitors by more lipophilic indole derivatives provided up to 30-fold potency improvements in cell-based subgenomic replicon assays. Optimization of C-2 substitution on the indole core led to the identification of analogs with EC(50)<100 nM and modulated the pharmacokinetic properties of the inhibitors based on preliminary data from in vitro ADME profiles and in vivo rat PK.
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