Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules and drug candidates. Its structure allows for selective functionalization, making it valuable in constructing complex heterocyclic compounds. Commonly employed in peptide mimetics and protease inhibitor designs due to its ability to mimic proline-like scaffolds. Also utilized in medicinal chemistry for building blocks in combinatorial libraries and in the preparation of cyclic peptides with enhanced metabolic stability.