Tropolonyl ethers of saccharides and cyclitol derivatives
作者:Henri Houte、Jean-Yves Valnot、Serge R. Piettre
DOI:10.1016/s0040-4039(02)02286-4
日期:2002.12
Mitsunobu coupling between tropolones and saccharide or cyclitolderivatives featuring primary or secondary alcohol functions provides for the first time an easy, general and efficient access to the corresponding tropolonyl ethers. Selective deprotection of the carbohydrate or cyclitol units demonstrates that naked saccharides and cyclitols bearing a tropolonyl ether moiety may be prepared by this
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.