Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its stereochemistry and functional groups make it valuable for peptide mimetics and asymmetric synthesis. The tert-butoxycarbonyl (Boc) group allows for easy protection of the amine during multi-step reactions, while the methoxy and carboxylic acid functionalities enable further chemical modifications. Commonly employed in medicinal chemistry for constructing complex molecules with high enantiomeric purity.