methyl 4-hydroxy-3-(2',3'-O-isopropylidene-5'-O-trityl-α-D-ribofuranosyl)pyrazole-5-carboxylate

methyl 2-diazo-4-(2,3-O-isopropylidene-5-O-trityl-β-D-ribofuranosyl)-3-oxobutanoate

2,2-dimethyl-6-(trityloxymethyl)tetrahydrofuro[3,4-d][1,3]dioxol-4-ol

ethyl 4-(2',3'-O-isopropylidene-5'-O-trityl-D-ribofuranosyl)-3-oxobutanoate

5-cyano-3-((2S,3S,4R,5R)-3,4-diacetoxy-5-(acetoxymethyl)tetrahydrofuran-2-yl)-1H-pyrazole-4-diazonium