Design, synthesis, and biological evaluation of new 1,2,3-triazolo-2'-deoxy-2'-fluoro- 4'-azido nucleoside derivatives as potent anti-HBV agents.

Abstract:

:Novel drugs are urgently needed to combat hepatitis B virus (HBV) infection due to drug-resistant virus. In this paper, a series of novel 4-monosubstituted 2'-deoxy-2'-β-fluoro-4'-azido-β-d-arabinofuranosyl 1,2,3-triazole nucleoside analogues (1a-g) were designed, synthesized and screened for in vitro anti-HBV activity. At 5.0 μM in the cellular model, all the synthetic compounds display activities comparable to that of the positive control, lamivudine at 20 μM. Of the compounds tested, the amide-substituted analogue (1a) shows the most promising anti-HBV activity and low cytotoxicity in the cell model. In particular, it retains excellent activity against lamivudine-resistant HBV mutants. In duck HBV (DHBV)-infected duck models, both the serum and liver DHBV DNA levels (67.4% and 53.3%, respectively) were reduced markedly by the treatment with 1a. Analysis of the structure of HBV polymer/1a-triphosphate (1a-TP) complex shows that 1a-TP is stabilized by specific van der Waals interactions with the enzyme residues arising from 4-amino-1,2,3-triazole and the 4'-azido group.

journal_name

Eur J Med Chem

authors

Liu Y,Peng Y,Lu J,Wang J,Ma H,Song C,Liu B,Qiao Y,Yu W,Wu J,Chang J

doi

10.1016/j.ejmech.2017.11.028

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

137-149

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(17)30923-6

journal_volume

143

pub_type

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