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

methyl 2-bromo-5-[(tert-butoxycarbonyl)amino]-1,3-thiazole-4-carboxylate

methyl 5-[(tert-butoxycarbonyl)amino]-2-(2,6-difluorophenyl)-1,3-thiazole-4-carboxylate

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