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

(1R,2S,3S,4S,5R)-1-formyloxy-2-benzyloxy-3,4-O-isopropylidene-5-iodomethyl-1,2,3,4-cyclopentane-tetrol

(1R,2S,3S,4S,5S)-2-O-benzyl-3,4-O-isopropylidene-5-acetoxymethyl-1,2,3,4-cyclopentane-tetrol

(1R,5S,6S,7S,8S)-8-benzyloxy-6,7-isopropylidenedioxy-2-oxabicyclo[3.3.0]oct-3-ol

(1R,5R,6S,7S,8S)-8-benzyloxy-6,7-isopropylidenedioxy-2-oxabicyclo[3.3.0]oct-3-one