Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its rigid pyrrolidine structure with defined stereochemistry makes it valuable for designing drugs that require high selectivity and binding affinity. Commonly employed in medicinal chemistry for peptidomimetic compounds, where it helps enhance metabolic stability and improve pharmacokinetic properties. Also utilized in the preparation of enzyme inhibitors targeting diseases such as diabetes, viral infections, and hypertension.