Preparation, anticholinesterase activity and molecular docking of new lupane derivatives
作者:María Julia Castro、Victoria Richmond、Carmen Romero、Marta S. Maier、Ana Estévez-Braun、Ángel G. Ravelo、María Belén Faraoni、Ana Paula Murray
DOI:10.1016/j.bmc.2014.04.050
日期:2014.7
A set of twenty one lupane derivatives (2-22) was prepared from the natural triterpenoid calenduladiol (1) by transformations on the hydroxyl groups at C-3 and C-16, and also on the isopropenyl moiety. The derivatives were tested for their inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) and some structure-activity relationships were outlined with the aid of enzyme kinetic studies and docking modelization. The most active compound resulted to be 3,16,30-trioxolup-20(29)-ene (22), with an IC50 value of 21.5 mu M for butyrylcholinesterase, which revealed a selective inhibitor profile towards this enzyme. (C) 2014 Elsevier Ltd. All rights reserved.
Oxidation at C-16 enhances butyrylcholinesterase inhibition in lupane triterpenoids
作者:María Julia Castro、Victoria Richmond、María Belén Faraoni、Ana Paula Murray
DOI:10.1016/j.bioorg.2018.05.012
日期:2018.9
evaluated as cholinesteraseinhibitors. Allylic oxidation with selenium oxide and Jones’s oxidation were employed to obtain mono-, di- and tri-oxolupanes, starting from calenduladiol (1) and lupeol (3). All the derivatives showed a selective inhibition of butyrylcholinesterase over acetylcholinesterase (BChE vs. AChE). A kinetic study proved that compounds 2 and 9, the more potent inhibitors of the series