herein an Ir-catalyzed intermolecular amino group transfer to β-ketoesters (amides) to access α-aminocarbonyl products with excellent chemoselectivity. The key strategy was to engineer electrophilicity of the putative Ir-nitrenoids by tuning electronic property of the κ2-N,O chelating ligands, thus facilitating nucleophilic addition of enol π-bonds of 1,3-dicarbonyl substrates.
5-substituted-4-oxo-1,4-dihydro-3-pyridinecarboxylates were synthetized by reacting 1,3,5-triazine with 4-substituted ethyl acetoacetate derivatives in ethanol, in the presence of sodium ethoxide. The l-alkyl-5-substituted-4-oxo-1,4-dihydro-3-pyridinecarboxylic acids required for the antimicrobial studies were prepared by N-alkylation (with triethyl phosphate or alkyl halides) and alkaline hydrolysis
Combinatorial libraries of autoinducer analogs, autoinducer agonists and antagonists, and methods of use thereof
申请人:——
公开号:US20040115732A1
公开(公告)日:2004-06-17
The present invention relates to solid phase or solution phase combinatorial libraries of autoinducer analogs. The present invention also relates to autoinducer agonists and antagonists. In addition, the present invention relates to methods for identifying autoinducer agonists and antagonists, as well as methods for regulating the activity of an autoinducer receptor, regulating biofilm formation, regulating growth or virulence of an organism in a subject, inhibiting the quorum sensing mechanism of an organism, and treating an infection in a subject caused by an organism possessing a quorum sensing mechanism which use the autoinducer analogs of the present invention.
COMBINATORIAL LIBRARIES OF AUTOINDUCER ANALOGS, AUTOINDUCER AGONISTS AND ANTAGONISTS, AND METHODS OF USE THEREOF
申请人:SUGA Hiroaki
公开号:US20080027115A1
公开(公告)日:2008-01-31
The present invention relates to solid phase or solution phase combinatorial libraries of autoinducer analogs. The present invention also relates to autoinducer agonists and antagonists. In addition, the present invention relates to methods for identifying autoinducer agonists and antagonists, as well as methods for regulating the activity of an autoinducer receptor, regulating biofilm formation, regulating growth or virulence of an organism in a subject, inhibiting the quorum sensing mechanism of an organism, and treating an infection in a subject caused by an organism possessing a quorum sensing mechanism which use the autoinducer analogs of the present invention.