(3R,4S,5S,6R)-6-tert-butyldimethylsilyloxymethyl-4-hydroxy-3,5-dimethyltetrahydropyran-2-one

3-[(2S,3S,4S,5R)-4-tert-butyldimethylsilyloxy-3,5-dimethyl-6-oxotetrahydropyran-2-yl]-(E)-propenal

(3R,4S,5S,6R)-4-tert-butyldimethylsilyloxy-6-tert-butyldimethylsilyloxymethyl-3,5-dimethyltetrahydropyran-2-one