Used as a key chiral intermediate in the synthesis of pharmaceutical agents, particularly in the development of bioactive molecules with central nervous system activity. Its protected amine and activated sulfonate ester functionalities allow selective nucleophilic substitution, enabling efficient construction of complex piperidine-containing structures. Commonly employed in medicinal chemistry for the preparation of protease inhibitors, receptor agonists, and antagonists. The Boc-protected group ensures stability during multi-step syntheses, while the mesylate group serves as a good leaving group for displacement reactions. Widely utilized in asymmetric synthesis to maintain stereochemical integrity in final drug candidates.