(R)-1-((3aR,5R,6R,6aR)-6-Benzyloxy-2,2-dimethyl-6-vinyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-2-(tert-butyl-dimethyl-silanyloxy)-ethanol

(1S,6R,8R,9R)-1-hydroxy-6-hydroxymethyl-9-methoxy-8-(thymin-1-yl)-4,7-dioxabicyclo[4.3.0]nonane

1,2-di-O-acetyl-3-C-acetoxyethyl-3,5-di-O-benzyl-4-C-(p-toluenesulfonyloxymethyl)-D-ribofuranose

((3aR,4aR,5R,8S,8aR,8bR)-8a-Benzyloxy-5-methoxy-2,2,6-trimethyl-3a,4a,5,8,8a,8b-hexahydro-benzo[4,5]furo[2,3-d][1,3]dioxol-8-yl)-methanol

(3aR,4aR,5R,8S,8aR,8bR)-8a-Benzyloxy-5-methoxy-2,2,6-trimethyl-8-trityloxymethyl-3a,4a,5,8,8a,8b-hexahydro-benzo[4,5]furo[2,3-d][1,3]dioxole