98%

Store at -20℃ for one year（Powder）；Store at 2-4℃ for two weeks；Store at -20℃ for six months after dissolution.

达拉他韦; BMS-790052；EBP 883

White to Dark Yellow Solid

DMSO : ≥ 40 mg/mL (54.14 mM)

HCV NS5A

BMS-790052 is one of the most potent inhibitors of HCV replication reported so far. The mean EC50 valuses of BMS-790052 are 50 and 9 pM for HCV genotype 1a and 1b replicons, respectively. BMS-790052 displays a therapeutic index (CC50/EC50) of at least 105 and is inactive towards a panel of 10 RNA and DNA viruses, with EC50 higher than 10 μM. This confirms BMS-790052's specificity for HCV. In Huh7 cells harboring the HCV genotype 1b replicons, BMS-790052 blocks both transient and stable HCV genome replication, with EC50 values raging from 1-15 pM. BMS-790052 (100 pM or 1 nM) has been shown to alter the subcellular localization and biochemical fractionation of NS5A. BMS-790052 inhibits hybrid replicons containing HCV genotype-4 NS5A genes with EC50 of 7-13 pM. Residue 30 of NS5A is an important site for BMS-790052-mediated resistance in the hybrid replicons.

In a randomized, double-blind, placebo-controlled, single ascending-dose study, Daclatasvir (BMS-790052) is administered at six dose levels to healthy, non-HCV-infected subjects over a range of 1 to 200 mg as an oral solution. Daclatasvir is safe and well tolerated up to 200 mg with no clinically relevant adverse effects. After oral administration, Daclatasvir is readily absorbed, with dose-proportional exposures over the studied dose range, and all subjects have drug concentrations greater than the protein-binding-adjusted EC90 for genotypes 1a and 1b, as measured in the replicon assay, at and beyond 24 h post-dose. (The protein binding-adjusted EC90 figures are derived from an analysis of the effect of the addition of human serum on antiviral activity in replicons. In the presence of 40% human serum, the EC90 for Daclatasvir is 383 pM (0.28 ng/mL) for the genotype 1a replicon and 49 pM (0.04 ng/mL) for the genotyope 1b replicon). Mice in each group that developed persistent HCV infection are divided into two treatment groups. One group receive 4 weeks of Asunaprevir/Daclatasvir treatment and the other group received 4 weeks of Ledipasvir/GS-558093 treatment. Asunaprevir/Daclatasvir therapy and Ledipasvir/GS-558093 therapy rapidly decease serum HCV RNA levels to below the sensitivity, and they are not detected after completion of the therapy except for two mice in the Ledipasvir/GS-558093 group.