2-[(2R,4aR,6S,7R,8R,8aS)-8-Benzyloxy-6-(tert-butyl-diphenyl-silanyloxy)-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl]-isoindole-1,3-dione

2-[(2S,3R,4R,5S,6R)-2-(tert-Butyl-diphenyl-silanyloxy)-4,5-dihydroxy-6-hydroxymethyl-tetrahydro-pyran-3-yl]-isoindole-1,3-dione