(3S,4S,5R)-3,5-Bis-(tert-butyl-dimethyl-silanyloxy)-4,6-dimethyl-hept-6-enethioic acid S-benzyl ester

(S)-4-Benzyl-3-[(2S,3R,4S,5R)-5-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-4,6-dimethyl-2-methylsulfanyl-hept-6-enoyl]-oxazolidin-2-one

(S)-4-Benzyl-3-[(3S,4S,5R)-3,5-bis-(tert-butyl-dimethyl-silanyloxy)-4,6-dimethyl-hept-6-enoyl]-oxazolidin-2-one

(S)-4-Benzyl-3-[(2S,3R,4R,5R)-3,5-bis-(tert-butyl-dimethyl-silanyloxy)-4,6-dimethyl-2-methylsulfanyl-hept-6-enoyl]-oxazolidin-2-one