(3aS,4S,6R,6aR)-4-Diazomethyl-2,2-dimethyl-6-trityloxymethyl-tetrahydro-cyclopenta[1,3]dioxole

methyl {5-[(1S,2S,3R,4R)-2,3-(isopropylidenedioxy)-4-(trityloxymethyl)cyclopentyl]-4-methoxycarbonyl-1H-pyrazolyl-3}acetate

(1R,2S,3R)-4-(acetoxymethyl)-1-<(methoxycarbonyl)amino>2,3-<(dimethylmethylene)dioxy>-4-cyclopentene

3-[(1S,2S,3R,4R)-2,3-(isopropylidenedioxy)-4-(trityloxymethyl)cyclopentyl]-1H-pyrazolo[4,3-c]pyridine-4,6(5H,7H)-dione

5-[(1S,2S,3R,4R)-2,3-(isopropylidenedioxy)-4-(trityloxymethyl)cyclopentyl]-1H-tetrazole