(1S,2R,3S)-N-(3-hydroxypropyl)-N-(o-nitrobenzenesulfonyl)-2,3-isopropylidinedioxycyclopent-4-enylamine

N-o-nitrobenzenesulfonyl-O-tert-butyldimethylsilyl-3-amino-1-propanol

(1S,2R,3S)-N-(3-oxopropyl)-N-(o-nitrobenzenesulfonyl)-2,3-isopropylidinedioxycyclopent-4-enylamine

N-(2-Bromo-3-oxo-propyl)-N-((3aR,4S,6aS)-2,2-dimethyl-4,6a-dihydro-3aH-cyclopenta[1,3]dioxol-4-yl)-2-nitro-benzenesulfonamide

(1S,2R,3S)-N-(3-tert-butyldimethylsilyloxypropyl)-N-(o-nitrobenzenesulfonyl)-2,3-isopropylidinedioxycyclopent-4-enylamine