tert-butyl [(3R,4R,5S)-5-cyclopropyl-4-hydroxypiperidin-3-yl]carbamate

tert-butyl [(3R,4R,5S)-5-cyclopropyl-4-hydroxy-1-(3-nitro-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl)piperidin-3-yl]carbamate

4-chloro-3-nitro-6,7-dihydro-5H-cyclopenta[b]pyridine

tert-butyl [(1R,2R,3S)-4-azido-3-cyclopropyl-2-hydroxy-1-(hydroxymethyl)butyl]carbamate