名称:
                                Design, synthesis, and biological evaluation of new N 4 -Substituted 2′-deoxy-2′-fluoro-4′-azido cytidine derivatives as potent anti-HBV agents
                             
                            
                                摘要:
                                A series of new 2'-deoxy-2'-beta-fluoro-4'-azido-B-D-arabinofuranosyl cytidine derivatives bearing heteroatom-containing N-4-substituents were designed and synthesized. Antiviral screening in HepG2.2.15 cells identified three analogs (1a, 1d & 1g) with good anti-HBV activity and low cytotoxicty. Of them, compound 1g exhibited significant inhibitory activity on both HBV antigens secretion (EC50, HBsAg = 9 HM, EC50, HBeAg = 0.25 mu M) and viral DNA replication (intracellular, EC50 = 0.099 mu M; extracellular, EC50 < 0.01 mu M). (C) 2015 Elsevier Masson SAS. All rights reserved.