(S)-8-Hydroxy-8-((3aR,6S,6aR)-6-hydroxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-octanoic acid ethyl ester

7-{(4S,5R)-5-[(R)-1-(4-Methoxy-benzyloxy)-prop-2-ynyl]-2-oxo-[1,3]dioxolan-4-yl}-heptanoic acid methyl ester

7-{(4S,5R)-5-[(R)-1-(4-Methoxy-benzyloxy)-7-trimethylsilanyl-hepta-2,4,6-triynyl]-2-oxo-[1,3]dioxolan-4-yl}-heptanoic acid methyl ester

methyl 7-[5-(1-hydroxyhepta-2,4,6-triynyl)-2-oxo-1,3-dioxolan-4-yl]heptanoate

7-((4R,5S,4'R,5'S)-5'-Hydroxymethyl-2,2,2',2'-tetramethyl-[4,4']bi[[1,3]dioxolanyl]-5-yl)-heptanoic acid ethyl ester