Synthesis of Chiral Tetrahomodiazacalix[4]- and [6]arenes Bridged by Cystine Peptide.

Abstract Bicyclic tetrahomodiazacalix[4]- and [6]arenes bridged by a cystine peptide were easily synthesized from the cyclization reactions of bis(chloromethyl)phenol-formaldehyde oligomers with cystine peptides in DMF in moderate yields.