3-[(3aS,4S,5aR,6S,7R,8aR,8bR)-6-Methoxymethoxy-2,2-dimethyl-7-(2-trityloxy-ethyl)-hexahydro-[1,3]dioxolo[4,5]furo[2,3-b]pyran-4-yl]-propionitrile

3-[(3aS,4S,5aR,6S,7R,8aR,8bR)-6-Methoxymethoxy-2,2-dimethyl-7-(2-trityloxy-ethyl)-hexahydro-[1,3]dioxolo[4,5]furo[2,3-b]pyran-4-yl]-propionaldehyde

(2R,3R,4S,5R)-4-Benzyloxy-2-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-((4S,5S)-2,2-dimethyl-5-trityloxymethyl-[1,3]dioxolan-4-yl)-tetrahydro-furan-3-ol

(2R,3S,4S,5R)-4-Benzyloxy-2-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-5-((4S,5S)-2,2-dimethyl-5-trityloxymethyl-[1,3]dioxolan-4-yl)-tetrahydro-furan-3-ol

(2R,3R,4R,5S)-4-benzyloxy-5-(1,3-dithian-2-yl)-3-(4-methoxybenzyloxy)-2-trityloxymethyltetrahydrofuran