Palladium-Catalyzed Multicomponent Synthesis of 2-Imidazolines from Imines and Acid Chlorides
作者:Boran Xu、Kraig Worrall、Bruce Arndtsen
DOI:10.3390/molecules171213759
日期:——
We describe the palladium-catalyzed multicomponent synthesis of 2-imidazolines. This reaction proceeds via the coupling of imines, acid chlorides and carbon monoxide to form imidazolinium carboxylates, followed by a decarboxylation. Decarboxylation in CHCl(3) is found to result in a mixture of imidazolinium and imidazolium salts. However, the addition of benzoic acid suppresses aromatization, and generates
Unexpected behaviour of tosylated and acetylated imidazolinium salts
作者:Nicole Clemens、Oksana Sereda、Ren? Wilhelm
DOI:10.1039/b601104g
日期:——
Tosylated and acetylated imidazolinium salts revealed an unexpected reactivity when treated with methyl iodide or benzyl bromide. Moreover an unprecedented acid-catalysed rearrangement for an acetylated imidazolinium salt was observed during an anion metathesis.
Nuclear Factor-κB Mediated Inhibition of Cytokine Production by Imidazoline Scaffolds
作者:Daljinder K. Kahlon、Theresa A. Lansdell、Jason S. Fisk、Christopher D. Hupp、Timothy L. Friebe、Stacy Hovde、A. Daniel Jones、Richard D. Dyer、R. William Henry、Jetze J. Tepe
DOI:10.1021/jm8013162
日期:2009.3.12
The mammalian nuclear transcription factor NF-kappa B is responsible for the transcription of multiple cytokines, including the pro-inflammatory cytokines tumor necrosis factor alpha (TNF-alpha) and interleukin 6 (IL-6). Elevated levels of pro-inflammatory cytokines play an important role in the pathogenesis of inflammatory disorders such as rheumatoid arthritis (RA). Inhibition of the pro-inflammatory transcription factor NF-kappa B has therefore been identified as a possible therapeutic treatment for RA. We describe herein the synthesis and biological activity of a series of imidazoline-based scaffolds as potent inhibitors of NF-kappa B mediated gene transcription in cell culture as well as inhibitors of TNF-alpha and IL-6 production in interleukin 1 beta (IL-1 beta) stimulated human blood.