Syntheses of new unsymmetrical bispolyazamacrocycles

Article abstract of DOI:10.1016/S0040-4039(97)10748-1

We report the synthesis of an original unsymmetrical bismacrocycle bearing a carboxylic side-arm. Two different synthetic pathways were investigated, both involving a Schotten-Baumann like reaction. The first route allowed us to obtain a mixture of compounds whilst the second one was direct and non-ambiguous.