(2R,3R,4S,5R)-2,3-O-isopropylidene-2,3-dihydroxy-4,5-epoxycyclopentanone

(1R,2R,3S,4S)-1-bromo-2-O-(N-benzylcarbamoyl)-3,4-O-isopropylidene-5-methylenecyclopentane-2,3,4-triol

tert-butyl ((3aR,4S,5R,6R,6aS)-4-hydroxy-6-(hydroxymethyl)-2,2-dimethyltetrahydro-4H-cyclopenta[d][1,3]dioxol-5-yl)carbamate

(1S,2R,3S,4S,5S)-4-hydroxy-2,3-isopropylidenedioxy-6-oxabicyclo[3.1.0]-hexane

(1S,2S,3S,4S,5R)-4-benzylamino-5-(hydroxymethyl)-1,2-isopropylidenecyclopentane-1,2,3-triol