(2S,4aS,8aR)-2-Benzyloxymethyl-hexahydro-pyrano[3,2-b]pyran-3-one

4-Benzyloxy-3-bromo-1-((2S,3R)-3-hydroxy-tetrahydro-pyran-2-yl)-butan-2-one

(2R,4aS,8aR)-2-Benzyloxymethyl-3-methylene-octahydro-pyrano[3,2-b]pyran

(3aS,4aR,8aS,10R,10aS)-10-(2,2-Dibromo-vinyl)-2,2-dimethyl-octahydro-1,3,5,9-tetraoxa-benzo[f]azulene

(3aS,4aR,8aS,10R,10aS)-10-Benzyloxymethyl-2,2-dimethyl-octahydro-1,3,5,9-tetraoxa-benzo[f]azulene