(R)-4-[(4S,5S,6R)-6-(2-Benzyloxy-ethyl)-5-methoxy-2,2-dimethyl-[1,3]dioxan-4-yl]-6-(tert-butyl-diphenyl-silanyloxy)-2-methyl-hexanal

{(4R,5S,6S)-6-[(1R,3R)-1-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-5-(dimethoxy-phosphoryl)-3-methyl-4-oxo-pentyl]-5-methoxy-2,2-dimethyl-[1,3]dioxan-4-yl}-acetic acid

{(3R,5R)-7-(tert-Butyl-diphenyl-silanyloxy)-5-[(4S,5S,6R)-6-(2-hydroxy-ethyl)-5-methoxy-2,2-dimethyl-[1,3]dioxan-4-yl]-3-methyl-2-oxo-heptyl}-phosphonic acid dimethyl ester