benzyl (3S,4S)-3,4-trans-3-[(tert-butoxycarbonyl)amino]-4-hydroxypiperidine-1-carboxylate

(3S,4S)-benzyl 3-(tert-butoxycarbonylamino)-4-(tert-butyldimethylsilyloxy)piperidine-1-carboxylate

tert-butyl ((3S,4S)-4-((tert-butyldimethylsilyl)oxy)-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