N6-benzoyl-2',3',5'-trideoxy-3'-(hydroxymethyl)-5'-<(tritylthio)methyl>-1'a-carbaadenosine

N6-benzoyl-2',3',5'-trideoxy-3'-<(methylsulfonyloxy)methyl>-5'-<(tritylthio)methyl>-1'a-carbaadenosine

methyl (1R,2S,4R)-2-(<(tert-butyl)diphenylsilyloxy>methyl)-4-hydroxycyclopentaneacetate