Used as a protected intermediate in the synthesis of complex organic molecules, particularly in pharmaceuticals and natural products. The tert-butyldimethylsilyl (TBS) and tert-butyloxycarbonyl (Boc) groups serve as orthogonal protecting groups for alcohols and amines, respectively, allowing selective deprotection and functionalization during multi-step syntheses. The hydroxymethyl and pyrrolidine functionalities make it valuable in the construction of proline-based peptidomimetics and bioactive compounds targeting enzymes or receptors. Commonly employed in medicinal chemistry for developing protease inhibitors and other therapeutic agents where stereochemical control is critical.