Used as a key intermediate in the synthesis of antiviral and antitumor agents, particularly in the preparation of nucleoside analogs. Its structure allows selective functionalization critical for bioactive molecule development. Commonly employed in stereoselective synthesis due to the chiral dioxolane ring and protected hydroxyl group. The trityl group enables controlled deprotection for stepwise assembly of complex molecules. Valuable in medicinal chemistry for constructing modified sugar moieties found in therapeutic nucleosides.