(S)-3-((3aS,4S,6R,6aR)-2,2-Dimethyl-6-trityloxymethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-5-methylene-piperidine-2,6-dione

(3aR,4R,6aS)-2,2-Dimethyl-4-trityloxymethyl-4,6a-dihydro-3aH-[1,3]dioxolo[4,5-c]pyrrole 5-oxide

2-(2,3-O-isopropylidene-5-O-triphenylmethyl-α-D-ribofuranosyl)thiophene

2-(2,3-O-isopropylidene-5-O-triphenylmethyl-β-D-ribofuranosyl)thiophene

2-(2,3-O-isopropylidene-5-O-triphenylmethyl-α-D-ribofuranosyl)indole