2-[(2S,4S,5S,6S)-4-(tert-Butyl-dimethyl-silanyloxy)-6-(tert-butyl-dimethyl-silanyloxymethyl)-5-methyl-tetrahydro-pyran-2-yl]-ethanol

(2S,3S,4S,6S)-4-(tert-Butyl-dimethyl-silanyloxy)-2-(tert-butyl-dimethyl-silanyloxymethyl)-6-((E)-3-iodo-allyl)-3-methyl-tetrahydro-pyran