1-((2R,3R,4R,5S,6R)-2-Allyloxy-4,5-dihydroxy-6-hydroxymethyl-tetrahydro-pyran-3-yl)-3,4-dimethyl-pyrrole-2,5-dione

1-((2S,3R,4R,5R,6R)-2-Iodo-4,5-bis-trimethylsilanyloxy-6-trimethylsilanyloxymethyl-tetrahydro-pyran-3-yl)-3,4-dimethyl-pyrrole-2,5-dione

1-((2R,3R,4R,5R,6R)-2-Allyloxy-4,5-bis-trimethylsilanyloxy-6-trimethylsilanyloxymethyl-tetrahydro-pyran-3-yl)-3,4-dimethyl-pyrrole-2,5-dione