Parallel synthesis of a series of potentially brain penetrant aminoalkyl benzoimidazoles
作者:Iolanda Micco、Arianna Nencini、Joanna Quinn、Hendrick Bothmann、Chiara Ghiron、Alessandro Padova、Silvia Papini
DOI:10.1016/j.bmc.2007.11.068
日期:2008.3
Alpha7 agonists were identified via GOLD (CCDC) docking in the putative agonist binding site of an alpha7 homology model and a series of aminoalkyl benzoimidazoles was synthesised to obtain potentially brain penetrant drugs. The array was prepared starting from the reaction of ortho-fluoronitrobenzenes with a selection of diamines, followed by reduction of the nitro group to obtain a series of monoalkylated phenylene diamines. N,N'-Carbonyidiimidazole (CDI) mediated acylation, followed by a parallel automated work-up procedure, afforded the monoacylated phenylenediamines which were cyclised under acidic conditions. Parallel work-up and purification afforded the array products in good yields and purities with a robust parallel methodology which will be useful for other libraries. Screening for alpha7 activity revealed compounds with agonist activity for the receptor. (C) 2007 Elsevier Ltd. All rights reserved.