Used as a key chiral intermediate in the synthesis of pharmaceutical agents, particularly in the development of protease inhibitors and other biologically active molecules. Its rigid, stereochemically defined structure makes it valuable in medicinal chemistry for constructing complex ring systems with high enantioselectivity. Commonly employed in asymmetric synthesis to introduce specific stereochemistry in drug candidates, especially those targeting central nervous system disorders and viral infections. Also utilized in the preparation of constrained peptidomimetics to enhance metabolic stability and receptor selectivity.