Used as a chiral intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals where stereochemistry plays a critical role in drug efficacy. Its structure supports asymmetric synthesis, enabling the development of enantiomerically pure substances. Commonly applied in the preparation of protease inhibitors and kinase inhibitors due to its ability to mimic peptide motifs and stabilize transition states. Also serves as a building block in medicinal chemistry for designing drugs with improved metabolic stability and target selectivity.