Studies on the anti-hepatitis C virus activity of newly synthesized tropolone derivatives: Identification of NS3 helicase inhibitors that specifically inhibit subgenomic HCV replication
作者:Andżelika Najda-Bernatowicz、Mariusz Krawczyk、Anna Stankiewicz-Drogoń、Maria Bretner、Anna M. Boguszewska-Chachulska
DOI:10.1016/j.bmc.2010.05.066
日期:2010.7
We synthesized new tropolone derivatives substituted with cyclic amines: piperidine, piperazine or pyrrolidine. The most active anti-helicase compound (IC50 = 3.4 mu M), 3,5,7-tri[(4'-methylpiperazin-1'-yl)methyl]tropolone (2), inhibited RNA replication by 50% at 46.9 mu M (EC50) and exhibited the lowest cytotoxicity (CC50) >1 mM resulting in a selectivity index (SI = CC50/EC50) >21. The most efficient replication inhibitor, 3,5,7-tri[(4'-methylpiperidin-1'-yl)methyl]tropolone (6), inhibited RNA replication with an EC50 of 32.0 mu M and a SI value of 17.4, whereas 3,5,7-tri[(3'-methylpiperidin-1'-yl)methyl] tropolone (7) exhibited a slightly lower activity with an EC50 of 35.6 mu M and a SI of 9.8. (C) 2010 Elsevier Ltd. All rights reserved.