Synthesis and potent anticonvulsant activities of 4-oxo-imidazo[1,2-a]indeno[1,2-e]pyrazin-8- and -9-carboxylic (acetic) acid AMPA antagonists
摘要:
The over-stimulation of excitatory amino acid receptors such as the glutamate AMPA receptor has been suggested to be associated with neurodegenerative disorders. Here we describe an original series of readily water soluble 4-oxo-imidazo[1,2-a] indeno[1,2-e]pyrazin-8- and -9-carboxylic (acetic) acid derivatives. One of these compounds, 4f, exhibited nanomolar binding affinity, potent competitive antagonism at the ionotropic AMPA receptor and a long duration of anticonvulsant activity after administration by parenteral route in vivo. (C) 2000 Elsevier Science Ltd. All rights reserved.
Palladium-Catalyzed Regioselective C–H Alkenylation of Arylacetamides via Distal Weakly Coordinating Primary Amides as Directing Groups
作者:Yogesh Jaiswal、Yogesh Kumar、Amit Kumar
DOI:10.1021/acs.joc.7b02618
日期:2018.2.2
Herein we disclose the efficient Pd(II)-catalyzed and regioselective ortho C–Halkenylation of arylacetamide derivatives, viz. weakly coordinating aliphatic primary amides. This protocol utilizes ubiquitous free primary amides as the directing group and circumvents two troublesome steps of installation and removal of an external auxiliary. This strategy directly enables the incorporation of a synthetically