Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its protected functional groups allow selective deprotection and coupling in multi-step organic syntheses. Commonly employed in the preparation of peptidomimetics due to the rigid pyrrolidine scaffold that mimics peptide backbones. The hydroxyl and amine groups serve as handles for further derivatization, making it valuable in medicinal chemistry for structure-activity relationship studies.