(R)-4-[(2R,4S,6R)-4-(tert-Butyl-dimethyl-silanyloxy)-6-((4Z,6E,10Z)-(S)-11-carboxy-3,10-dimethyl-undeca-4,6,10-trienyl)-2-methoxy-tetrahydro-pyran-2-yl]-2-oxo-thiazolidine-3-carboxylic acid 2-trimethylsilanyl-ethyl ester

(S)-4-{(2R,4S,6R)-4-Hydroxy-6-methoxy-6-[(R)-3-(4-methoxy-benzyl)-2-oxo-thiazolidin-4-yl]-tetrahydro-pyran-2-yl}-2-methyl-butyric acid (1R,2R)-2-hydroxy-1-methyl-propyl ester

(S)-4-{(2R,4S,6R)-4-(tert-Butyl-dimethyl-silanyloxy)-6-methoxy-6-[(R)-3-(4-methoxy-benzyl)-2-oxo-thiazolidin-4-yl]-tetrahydro-pyran-2-yl}-2-methyl-butyric acid (1R,2R)-2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-propyl ester

(4R)-4-(3-hydroxy-4-((2R,3R,7R,10S)-2,3,10-trimethyl-1,4,6-trioxaspiro[4.5]decan-7-yl)butanoyl)-3-(4-methoxybenzyl)thiazolidin-2-one

(2R,3R)-3-hydroxybutan-2-yl (S)-4-((2R,4S,6R)-4,6-dihydroxy-6-((R)-3-(4-methoxybenzyl)-2-oxothiazolidin-4-yl)tetrahydro-2H-pyran-2-yl)-2-methylbutanoate