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

2-[(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]-ethanol

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

{(4S,5S)-5-[(2S,3R,4S,5R)-4-Methoxymethoxy-3-triethylsilanyloxy-5-(2-trityloxy-ethyl)-tetrahydro-furan-2-yl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-methanol