Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of protease inhibitors and other biologically active molecules. Its structural features, including the fluorinated pyrrolidine ring and the fluorenylmethyloxycarbonyl (Fmoc) protecting group, make it valuable in solid-phase peptide synthesis and medicinal chemistry. The presence of fluorine enhances metabolic stability and influences conformation, improving binding selectivity in drug candidates. Commonly employed in the preparation of antiviral agents and enzyme inhibitors where stereochemistry and fluorination play critical roles in activity.