Used in peptide synthesis as a protected D-homoserine derivative, enabling selective coupling and preventing side reactions. The D-configuration enhances stability against enzymatic degradation in biological systems. The Boc group protects the amino terminus, while the benzyl (Bzl) group shields the hydroxyl side chain of homoserine, ensuring proper sequence assembly in solid-phase or solution-phase synthesis. Commonly applied in the preparation of complex peptides and peptidomimetics for pharmaceutical research.