Synthesis of {1-[2',5'-bis-O-(t-butyldimethylsilyl)-β-D-xylo- and β-D-ribofuranosyl]Thymine}-3'-spiro-5''-{4''-amino-1'',2''-oxathiol e-2'',2''-dioxide} (TSAO). A novel type of specific anti-HIV agents

Article abstract of DOI:10.1016/S0040-4039(00)79591-8

Reaction of O-mesylcyanohydrins of furanos-3'-ulosyl thymine with bases afforded β-D-xylo- and ribo-3'-substituted nucleosides. 2'-Deoxygenation of the selectively 5'-O-protected nucleoside gave the ribofuranosyl derivative of thymidine.