Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its stereochemistry makes it valuable for constructing complex peptides and peptidomimetics with high enantioselectivity. Commonly employed in solid-phase and solution-phase peptide synthesis due to the stability and ease of removal of the Boc protecting group. Also utilized in the preparation of enzyme inhibitors and in medicinal chemistry research for optimizing drug candidates.