2,2'-anhydro-1-(5'-O-benzoyl-3'-O-methanesulfonyl-β-D-arabinofuranosyl)uracil
sodium benzoate
(3aS)-2t-chloromethyl-3c-(toluene-4-sulfonyloxy)-(3ar,9ac)-2,3,3a,9a-tetrahydro-furo[2',3':4,5]oxazolo[3,2-a]pyrimidin-6-one
(3aS)-2t-benzoyloxymethyl-3c-(toluene-4-sulfonyloxy)-(3ar,9ac)-2,3,3a,9a-tetrahydro-furo[2',3':4,5]oxazolo[3,2-a]pyrimidin-6-one
5'-chloro-O2',O3'-bis-(toluene-4-sulfonyl)-5'-deoxy-uridine