Used as a chiral building block in the synthesis of complex organic molecules, particularly in pharmaceuticals where stereochemistry is critical. Its silyl-protected hydroxymethyl group allows for selective deprotection and further functionalization, making it valuable in multi-step synthesis. Commonly employed in the preparation of bioactive compounds, including protease inhibitors and other therapeutic agents requiring high enantiomeric purity. The pyrrolidine ring serves as a structural motif in many drug candidates, enhancing metabolic stability and target binding.