Microwave assisted synthesis of 3,5-disubstituted 1,2,4-oxadiazoles from substituted amidoximes and benzoyl cyanides
摘要:
We report herein the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles from amidoximes and substituted or unsubstituted benzoyl cyanides under microwave irradiation. Substituted or unsubstituted O-carboxyphenyl amidoxime is a key intermediate of this alternative method developed for the synthesis of these heterocycles. These reactions employ simple synthetic protocols devoid of lengthy purification procedures and proceed with good yield. (c) 2013 Elsevier Ltd. All rights reserved.
Various 3,5-disubstituted-1,2,4-oxadiazoles are smoothly formed via copper-catalyzed cascade annulation of amidines and methylarenes. This tandem oxidation-amination-cyclization transformation represents a straightforward protocol to prepare 1,2,4-oxadiazoles from easily available starting materials, with...
COMPOUNDS AND METHODS FOR MODULATING G PROTEIN-COUPLED RECEPTORS
申请人:He Xiaohui
公开号:US20110172278A1
公开(公告)日:2011-07-14
The invention provides compounds, pharmaceutical compositions comprising such compounds and methods of using such compounds to treat or prevent diseases or disorders associated with or mediated by G protein-coupled receptors, in particular G protein-coupled receptor 120.