2,3′-disubstituted-2-(2′-carboxycyclopropyl)glycines as potent and selective antagonists of metabotropic glutamate receptors
摘要:
2-(9-Xanthylmethyl)-2-(2' -carboxycyclopropyl) glycine 6e is a novel metabotropic glutamate receptor antagonist. A series of alpha, C-3' disubstituted (carboxycyclopropyl)glycines 6f-n were prepared. Antagonist activity was observed for all these compounds at group 2 and group 3 mGluRs. Although they were slightly less active on group 2 mGluRs than non C-3' substituted 6e, the compounds 6f-n were more selective with lesser or no activity on group I mGluR subtypes (IC50 values greater than 100 mu m). (C) 1998 Elsevier Science Ltd. All rights reserved.
Double Heck reaction of bridged o , o ′-dibromobiaryls with ethyl acrylate
作者:Mahavir Prashad、Yugang Liu、Xiao Yin Mak、Denis Har、Oljan Repič、Thomas J. Blacklock
DOI:10.1016/s0040-4039(02)02090-7
日期:2002.11
An inter- followed by an intramolecular double Heck reaction of bridged o,o′-dibromobiaryls with ethyl acrylate is described. The nature of the bridging atom/group determined the outcome of the reaction. This double Heck reaction strategy afforded a safe and convenient synthesis of 9-(ethoxycarbonylmethylene)-9H-xanthene and a novel route to 9 and/or 10-substituted anthracene derivatives.