Imidazo-pyridine derivatives as ligands for gaba receptors
申请人:——
公开号:US20020188000A1
公开(公告)日:2002-12-12
A class of 3-phenylimidazo[1,2-a]pyridine derivatives, substituted at the meta position of the phenyl ring by an optionally substituted aryl or heteroaryl group which is directly attached or bridged by an oxygen atom or a —NH— linkage, are selective ligands for GABA
A
receptors, in particular having high affinity for the &agr;2 and/or &agr;3 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.
Abstract Three new interesting coordination polymers, [Zn(PDCO)(H2O)·H2O]n (1), [Co(PDCO)(H2O)3]n (2) and [Mn(PDCO)(H2O)2]n (3), (H2PDCO = pyridine-2,4-dicarboxylic acid N-oxide), have been prepared under hydrothermal conditions and structurally characterized. Polymer 1 exhibits 0D Zn units, polymer 2 features 1D infinite zigzag Co chains. In polymer 3, four Mn atoms and four PDCO ligands form a 24-member
Catalytic compositions and catalytic processes are provided. The catalytic compositions are produced by the process that comprises contacting an organonickel compound with a cyclicazacarbyl compound. Optionally, one or more catalytic promoters can be present in the catalytic compositions. Additionally, one or more olefins can be contacted with one or more of these catalytic compositions to form oligomerization products and/or polymerization products.