Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its protected amine and keto-functional group allow selective reactions in multi-step organic syntheses. Commonly employed in the preparation of peptidomimetics due to its structural similarity to proline. The Boc group ensures stability under various reaction conditions, making it suitable for use in solid-phase and solution-phase peptide synthesis. Also utilized in the production of nootropic agents and cognitive enhancers.