Used as a building block in peptide synthesis, particularly in the development of pharmaceuticals and bioactive compounds. Its rigid cyclic structure enhances stability and influences conformational folding in peptide chains, making it valuable in drug design for improving metabolic resistance and receptor selectivity. Commonly found in research on antimicrobial agents, antitumor compounds, and central nervous system modulators due to its ability to mimic peptide turn structures. Also employed in the synthesis of natural product analogs and enzyme inhibitors.