Used in pharmaceutical synthesis as a protected building block for peptidomimetics and heterocyclic compounds. The Boc group provides amine protection during coupling reactions, while the thiol functionality allows for selective conjugation, such as in the formation of disulfide bonds or thioether linkages. Commonly employed in the development of protease inhibitors and targeted therapeutics where controlled reactivity and structural rigidity are required. Its piperidine scaffold supports conformational constraint in drug design, enhancing selectivity and metabolic stability.