(9H-fluoren-9-yl)methyl (3aR,3bR,6S,7R,7aR,8aR)-6-hydroxy-2,2-dimethylhexahydro-7,3b-(epiminoethano)[1,3]dioxolo[4',5':4,5]furo[3,2-b]pyran-9-carboxylate

(9H-fluoren-9-yl)methyl (3aR,3bR,6R,7R,7aR,8aR)-6-hydroxy-2,2-dimethylhexahydro-7,3b-(epiminoethano)[1,3]dioxolo[4',5':4,5]furo[3,2-b]pyran-9-carboxylate

(3aR,5R,6R,6aR)-6-Allyloxy-6-(2-benzyloxy-ethyl)-2,2-dimethyl-5-vinyl-tetrahydro-furo[2,3-d][1,3]dioxole

(3aR,3bR,6R,7R,7aR,8aR)-2,2-dimethylhexahydro-7,3b-(epiminoethano)[1,3]dioxolo[4',5':4,5]furo[3,2-b]pyran-6-ol

(3aR,3bR,7aR,8aR)-3b-(2-Benzyloxy-ethyl)-2,2-dimethyl-3a,5,7a,8a-tetrahydro-3bH-[1,3]dioxolo[4,5]furo[3,2-b]pyran