{(3aR,5S,6R,6aR)-5-[(R)-2-(tert-Butyl-diphenyl-silanyloxy)-1-methanesulfonyloxy-ethyl]-2,2-dimethyl-6-vinyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl}-acetic acid ethyl ester

(3aR,4aS,5R,7aR,7bR)-7a-(tert-Butyl-dimethyl-silanyloxymethyl)-6-(2,2-dimethyl-propionyloxy)-5-methoxy-2,2-dimethyl-4a,5,7a,7b-tetrahydro-3aH-cyclopenta[4,5]furo[2,3-d][1,3]dioxole-7-carboxylic acid methyl ester

(3R,4S,5S)-5-Acetoxymethyl-4-(tert-butyl-dimethyl-silanyloxy)-2-(2,2-dimethyl-propionyloxy)-3-methoxy-5-methyl-cyclopent-1-enecarboxylic acid methyl ester

(S)-2-(tert-Butyl-diphenyl-silanyloxy)-1-{(3aR,5S,6R,6aR)-6-[2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-2,2-dimethyl-6-vinyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl}-ethanol

(2R,3R,4R,5S)-4-Formyl-2,3-(isopropylidenedioxy)-5-<(1R)-1,2-(isopropylidenedioxy)ethyl>-4-<4-(tert-butyldimethylsilyloxy)butyl>tetrahydrofuran