(E)-(4S,7S)-7-Hydroxy-4-(tetrahydro-pyran-2-yloxy)-oct-2-enoic acid

(S)-5-[(S)-3-(tert-Butyl-diphenyl-silanyloxy)-butyl]-dihydro-furan-2-one

(E)-(S)-7-(tert-Butyl-diphenyl-silanyloxy)-4-oxo-oct-2-enoic acid methyl ester

(4R,7S)-7-(tert-Butyl-diphenyl-silanyloxy)-4-methanesulfonyloxy-octanoic acid

(E)-3-{2-[(S)-3-(tert-Butyl-diphenyl-silanyloxy)-butyl]-[1,3]dioxolan-2-yl}-acrylic acid methyl ester