Discovery and structure–activity relationships of urea derivatives as potent and novel CCR3 antagonists
摘要:
The synthesis and structure-activity relationships of ureas as CCR3 antagonists are described. Optimization starting with lead compound 2 (IC50 = 190 nM) derived from initial screening hit compound 1 (IC50 = 600 nM) led to the identification of (S)-N-((1R,3S,5S)-8-((6-fluoronaphthalen-2-yl)methyl)-8-azabicyclo[3.2.1]octan-3-yl)-N-(2-nitrophenyl)pyrrolidine-1,2-dicarboxamide 27 (IC50 = 4.9 nM) as a potent CCR3 antagonist. (c) 2012 Elsevier Ltd. All rights reserved.
Parallel Synthesis of a Library of Benzoxazoles and Benzothiazoles Using Ligand-Accelerated Copper-Catalyzed Cyclizations of <i>ortho</i>-Halobenzanilides
作者:Ghotas Evindar、Robert A. Batey
DOI:10.1021/jo051927q
日期:2006.3.1
A general method for the formation of benzoxazoles via a copper-catalyzed cyclization of ortho-haloanilides is reported. This approach complements the more commonly used strategies for benzoxazole formation which require 2-aminophenols as substrates. The reaction involves an intramolecular C−O cross-coupling of the ortho-haloanilides and is believed to proceed via an oxidative insertion/reductive elimination
The synthesis and structure-activity relationships of ureas as CCR3 antagonists are described. Optimization starting with lead compound 2 (IC50 = 190 nM) derived from initial screening hit compound 1 (IC50 = 600 nM) led to the identification of (S)-N-((1R,3S,5S)-8-((6-fluoronaphthalen-2-yl)methyl)-8-azabicyclo[3.2.1]octan-3-yl)-N-(2-nitrophenyl)pyrrolidine-1,2-dicarboxamide 27 (IC50 = 4.9 nM) as a potent CCR3 antagonist. (c) 2012 Elsevier Ltd. All rights reserved.