Synthesis of bis-pyrrole tetra esters and alcohols as novel mimetics of the anticancer mitomycin
作者:Zubair M. Abdulla、Radhakrishnan P. Iyer、Krishnamachari G. Akamanchi、Mariam S. Degani、Evans C. Coutinho
DOI:10.1002/jhet.495
日期:2011.1
Open‐chain bis‐Reissertcompounds 1 were converted to the corresponding bis‐oxazolium intermediates via acid‐catalyzed intramolecular cyclization. These oxazolium compounds exist in a variety of tautomeric structures in which the meso‐ionic form can be intercepted by reaction with dipolarophiles in a 1,3‐dipolar‐cycloaddition reaction to produce a variety of highly functionalized bis‐pyrrole esters