Toluene-4-sulfonic acid (S)-3-{(2S,5R)-5-[(S)-1-(tert-butyl-dimethyl-silanyloxy)-undecyl]-tetrahydro-furan-2-yl}-3-[(E)-2-((S)-toluene-4-sulfinyl)-vinyloxy]-propyl ester

(S)-3-((E)-(R)-13-{(2S,5R,2'S,5'R)-5'-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-undecyl]-octahydro-[2,2']bifuranyl-5-yl}-13-hydroxy-tridec-10-enyl)-5-methyl-3-phenylsulfanyl-dihydro-furan-2-one

(S)-3-((R)-13-{(2S,5R,2'S,5'R)-5'-[(S)-1-(tert-Butyl-dimethyl-silanyloxy)-undecyl]-octahydro-[2,2']bifuranyl-5-yl}-13-hydroxy-tridecyl)-5-methyl-3-phenylsulfanyl-dihydro-furan-2-one

(4S,5S)-5-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-4-hydroxy-dihydro-furan-2-one

Toluene-4-sulfonic acid (S)-3-hydroxy-3-((2S,4S)-2-phenyl-[1,3]dioxan-4-yl)-propyl ester