2-{(2R,6S)-6-[(2S,4R,5S)-2-Benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-5-methyl-hept-6-enyl]-tetrahydro-pyran-2-yl}-2-methyl-propionic acid 2-trimethylsilanyl-ethyl ester

2-{(2R,6S)-6-[(2S,4R,5R)-2-Benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-5-methyl-6-oxo-hexyl]-tetrahydro-pyran-2-yl}-2-methyl-propionic acid 2-trimethylsilanyl-ethyl ester

2-{(2R,6S)-6-[(2S,4R,5S)-2-Benzyloxy-4-(tert-butyl-dimethyl-silanyloxy)-6-hydroxy-5-methyl-hexyl]-tetrahydro-pyran-2-yl}-2-methyl-propionic acid 2-trimethylsilanyl-ethyl ester

2-[(2R,6S)-6-((S)-2-Benzyloxy-4-oxo-butyl)-tetrahydro-pyran-2-yl]-2-methyl-propionic acid 2-trimethylsilanyl-ethyl ester

2-[(2R,6S)-6-((R)-2-Hydroxy-pent-4-enyl)-tetrahydro-pyran-2-yl]-2-methyl-propionic acid methyl ester