(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl-(4-nitrophenyl)carbonic acid
(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
ethyl {(3aR,5R,6R,6aR)-5-[(E)-2-(4-bromophenyl)vinyl]-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl}acetate