Synthesis, receptor affinity and effect on pentylenetetrazole-induced seizure threshold of novel benzodiazepine analogues: 3-Substituted 5-(2-phenoxybenzyl)-4H-1,2,4-triazoles and 2-amino-5-(phenoxybenzyl)-1,3,4-oxadiazoles
作者:Siavash Mashayekh、Narges Rahmanipour、Behnaz Mahmoodi、Fatemeh Ahmadi、Dina Motaharian、Soraya Shahhosseini、Hamed Shafaroodi、Hamid R. Banafshe、Abbas Shafiee、Latifeh Navidpour
DOI:10.1016/j.bmc.2014.01.041
日期:2014.3
The new series of 5-(2-phenoxybenzyl)-4H-1,2,4-triazoles, possessing C-3 thio, alkylthio and ethoxy substituents, and 2-amino-5-(2-phenoxybenzyl)-1,3,4-oxadiazoles were designed and synthesized as novel benzodiazepine analogues. Most of them revealed similar to superior binding affinity to the GABA(A)/benzodiazepine receptor complex, relative to diazepam as the reference drug. Among them, 5-(4-chloro-2-(2-fluorophenoxy) benzyl)-3-benzylthio-4H-1,2,4-triazole (8l) showed the highest affinity (IC50 = 0.892 nM) relative to diazepam (IC50 = 2.857 nM) and also showed the most increase in pentylen-etetrazole-induced seizure threshold relative to diazepam as the reference drug. (C) 2014 Elsevier Ltd. All rights reserved.