Synthesis and binding studies of a 1-alkyl-3,6-diamino-4-quinolone based receptor for N-acylated dipeptides

The synthesis and binding properties of a semirigid host for N-acyldipeptide carboxylic acids is presented. The design is based on the rigidification of a peptide strand, coupled to the use of a substituted quinoline as a hydrogen bond acceptor for the proton of a carboxylic acid.