methyl 2-((1S,2S,3S,4R)-4-(7-chloro-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl)-2,3-dihydroxycyclopentyloxy)acetate

tert-butyl (3aR,4S,6R,6aS)-4-hydroxytetrahydro-3aH-spiro[cyclopenta[d][1,3]dioxole-2,1'-cyclopentane]-6-ylcarbamate

ethyl 2-(((3aS,4R,6S,6aR)-4-((tert-butoxycarbonyl)amino)tetrahydro-3aH-spiro[cyclopenta[d][1,3]dioxole-2,1'-cyclopentan]-6-yl)oxy)acetate

tert-butyl (3aR,4S,6R,6aS)-4-(2-hydroxyethoxy)tetrahydro-3aH-spiro[cyclopenta[d][1,3]dioxole-2,1'-cyclopentane]-6-ylcarbamate

2-((3aS,4R,6S,6aR)-4-aminotetrahydro-3aH-spiro[cyclopenta[d][1,3]dioxole-2,1'-cyclopentane]-6-yloxy)ethanol oxalic acid salt