Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other biologically active molecules. Its structure allows for selective functionalization, making it valuable in medicinal chemistry for constructing complex heterocyclic systems. Commonly employed in peptide coupling and solid-phase synthesis due to the stability and ease of deprotection of the Boc (tert-butoxycarbonyl) groups. Also utilized in the preparation of nucleoside analogs and antiviral agents.