Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules and active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role in biological activity. Its structure allows for selective transformations, making it valuable in asymmetric synthesis. Commonly employed in the preparation of protease inhibitors and kinase inhibitors due to its ability to mimic peptide motifs and interact with enzyme active sites. Also utilized in the design of novel drug candidates targeting central nervous system disorders, leveraging its stability and functional group compatibility in multi-step reactions.