(2R,3S)-4-(tert-butyldimethylsilyl)oxy-2,3-isopropylidenedioxybutanol

(2S,3S)-2,3-O-isopropylidene-2,3,4-trihydroxybutanal tert-butyldimethylsilyl ether

(E,4R,5S)-6-(tert-butyldimethylsilyl)oxy-4,5-isopropylidenedioxy-2-hexenol

(E,4R,5S)-6-(tert-butyldimethylsilyl)oxy-4,5-isopropylidenedioxy-1-(tetrahydropyran-2-yl)oxy-2-hexene

(E,2S,3R)-2,3-isopropylidenedioxy-6-(tetrahydro-2H-pyran-2-yl)oxy-4-hexenol