3-(4-tert-butyldimethylsilyloxy-3,5-dimethyl-6-oxotetrahydropyran-2-yl)propanal

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

4-tert-butyldimethylsilyloxy-3,5-dimethyl-6-oxotetrahydropyran-2-carbaldehyde

(4R,5R,6R)-6-tert-butyldimethylsilyloxymethyl-4-hydroxy-5-methyltetrahydropyran-2-one

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