Polyfunctionalisation of imidazole via sequential imidazolyl anion formation
摘要:
A method for achieving the sequential functionalisation of the imidazole ring in the order C-5-->C-4-->C-2 is described. The chemistry proceeds via the regioselective formation of positionally stable imidazolyl anions which are reacted with electrophiles (aldehydes, alkyl halides, azides, formamides, isocyanates) to afford substituted imidazoles in 31-90% yield. (C) 1997 Elsevier Science Ltd.
Design and novel synthesis of aryl-heteroaryl-imidazole MAP kinase inhibitors
摘要:
Inhibitors of the MAP kinase p38, potentially useful for the treatment of rheumatoid arthritis and inflammatory diseases, were found to exhibit antifungal activity. We have developed a new diversity-oriented strategy leading to concise and efficient syntheses of known and new members of this compound class. The strategy is based on carbon-carbon cross-coupling reactions using N-protected 4,5-diiodo-irrtidazoles as the starting templates. (C) 2003 Elsevier Ltd. All rights reserved.