Used as a key chiral building block in the synthesis of pharmaceutical agents, particularly in the development of protease inhibitors and antiviral drugs. It features a Boc-protected piperidine nitrogen with free amino and hydroxyl groups at the 3S and 4S positions, allowing selective functionalization while maintaining high stereochemical purity. This makes it valuable for constructing complex molecules in medicinal chemistry, especially for optimizing drug candidates targeting central nervous system disorders and metabolic diseases.