Synthesis of dipeptide-bound epoxides and α,β-unsaturated amides as potential irreversible transglutaminase inhibitors Original Research Article

Herein we report the synthesis of 24 novel peptides as potential irreversible inactivators of transglutaminase (TGase). These peptides were designed to resemble Cbz-l-Gln-Gly, known to be a good TGase substrate, and to include either α,β-unsaturated amide groups or the corresponding epoxide groups. The side chain length of the amino acid residue bearing the inhibitor group was also varied in order to permit investigation of this effect.