2-{(4S,6R)-6-[(S)-4-(tert-Butyl-diphenyl-silanyloxy)-2-methoxymethoxy-butyl]-2,2-dimethyl-[1,3]dioxan-4-yl}-2-methyl-propionaldehyde

(S)-1-[(4R,6S)-6-(2-Benzyloxy-1,1-dimethyl-ethyl)-2,2-dimethyl-[1,3]dioxan-4-yl]-4-(tert-butyl-diphenyl-silanyloxy)-butan-2-ol

{(S)-4-[(4R,6S)-6-(2-Benzyloxy-1,1-dimethyl-ethyl)-2,2-dimethyl-[1,3]dioxan-4-yl]-3-methoxymethoxy-butoxy}-tert-butyl-diphenyl-silane