Widely used in pharmaceutical synthesis, this compound serves as a key chiral building block for the preparation of bioactive molecules, especially protease inhibitors and antiviral agents. Its N-Boc protected nitrogen, along with free hydroxyl and carboxylic acid functionalities, allow selective reactions in multi-step syntheses. The rigid pyrrolidine scaffold with defined stereochemistry enhances stereoselectivity in drug candidates. It is particularly valuable in the development of enzyme inhibitors where precise 3D orientation is critical for activity. Commonly employed in solid-phase and solution-phase peptide-like assembly, it helps construct complex heterocyclic systems found in medicinal chemistry.