(3',5'-di-O-benzoyl-2'-deoxy-β-D-erythro-pentofuranosyl)-[2-(N-(tert-butoxycarbonyl)amino)phenyl] ketone

(3',5'-di-O-(p-toluoyl)-2'-deoxy-β-D-erythro-pentofuranosyl)-[2-(N-(tert-butoxycarbonyl)amino)phenyl] ketone

(2R,4S,5R)-4-(4-Methyl-benzoyloxy)-5-(4-methyl-benzoyloxymethyl)-tetrahydro-furan-2-carboxylic acid