2,5-Diketopiperidine derivatives as non-peptide ligands for cholecystokinin receptors

Abstract

Easily accessible 2,5-diketopiperidines have been used as templates for the construction of Trp-Phe and Trp-Asp-Phe-NH2 mimics. The cycle [L-Trp psi[COCH2]-L-Phe] analogue 1a has shown to possess significant and selective affinity for CCKA receptors.