(1R,4R)-tert-Butyl 3-oxo-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxylate
(1R,4R,5R)-rel-tert-Butyl 5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate
tert-Butyl hexahydro-1H-pyrrolo[3,4-c]pyridine-2(3H)-carboxylate
(1S,4S)-2-Methyl-2,5-diazabicyclo[2.2.1]heptane dihydrochloride