Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other biologically active compounds. Its structure provides a constrained ring system that can mimic peptide bonds, making it valuable in medicinal chemistry for enhancing metabolic stability and improving binding selectivity. Commonly employed in solid-phase and solution-phase peptide synthesis due to the Cbz protecting group, which allows for selective deprotection under mild conditions. Also utilized in the design of enzyme inhibitors where conformational restriction is required for optimal activity.