(1R,4S,5R,6S)-4,5-di(benzoyloxy)-6-[{1-(tert-butyl)-1,1-dimethylsilyl}-oxy]-2-iodo-2-cyclohexenyl 4-nitrobenzoate

(3aS,4R,5S,7aS)-7-iodo-2,2-dimethyl-3a,4,5,7a-tetrahydro-1,3-benzodioxole-4,5-diol

(3aS,7aS)-4-iodo-2,2-dimethyl-3a,7a-dihydro-1,3-benzodioxole

methyl (3S,4R,5R,6S)-5-[{1-(tert-butyl)-1,1-dimethylsilyl}oxy]-3,4,6-trihydroxy-1-cyclohexene-1-carboxylate

(3aR,4S,5S,7aS)-4-benzoyloxy-7-iodo-2,2-dimethyl-3a,4,5,7a-tetrahydro-1,3-benzodioxol-5-yl benzoate