2-Phenyl-4-piperazinylbenzimidazoles: Orally active inhibitors of the gonadotropin releasing hormone (GnRH) receptor
作者:Jeffrey C. Pelletier、Murty Chengalvala、Josh Cottom、Irene Feingold、Lloyd Garrick、Daniel Green、Diane Hauze、Christine Huselton、James Jetter、Wenling Kao
DOI:10.1016/j.bmc.2008.05.024
日期:2008.7.1
Antagonism of the gonadotropin releasing hormone (GnRH) receptor has shown positive clinical results in numerous reproductive tissue disorders such as endometriosis, prostate cancer and others. Traditional therapy has been limited to peptide agonists and antagonists. Recently, small molecule GnRH antagonists have emerged as potentially new treatments. This article describes the discovery of 2-phenyl-4-piperazinylbenzimidazoles as small molecule GnRH antagonists with nanomolar potency in in vitro binding and functional assays, excellent bioavailability (rat % F > 70) and demonstrated oral activity in a rat model having shown significant serum leuteinizing hormone (LH) suppression. (c) 2008 Elsevier Ltd. All rights reserved.
Microwave-assisted aza-Cope rearrangement of N-allylanilines
The aza-Cope rearrangement of N-allylanilines is described. The use of BF3 center dot OEt2 and microwave irradiation allows to run the transformation under mild conditions and in reaction times of minutes. (c) 2008 Published by Elsevier Ltd.