(3aR,4aS,5R,7aR,7bR)-7a-Acetoxymethyl-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,5R)-5-Acetoxymethyl-5-(bis-ethylsulfanyl-methyl)-2-(2,2-dimethyl-propionyloxy)-4-hydroxy-3-methoxy-cyclopent-1-enecarboxylic acid methyl ester

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

(3aR,4aS,5S,8aR,8bR)-5-(tert-Butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-8a-vinyl-hexahydro-[1,3]dioxolo[4,5]furo[2,3-c]pyran-7-one

(2R,3R,4R,5S)-4-<(E)-2-(Ethoxycarbonyl)ethenyl>-2,3-(isopropylidenedioxy)-5-<(1R)-1,2-(isopropylidenedioxy)ethyl>-4-(oxobutyl)tetrahydrofuran