1173197-53-9

Ethyl (1S,3S,4S)-rel-2-Boc-5-oxo-2-azabicyclo-[2.2.1]heptane-3-carboxylate 2-tert-butyl 3-ethyl (1S,3S,4S)-5-oxo-2-azabicyclo[2.2.1]heptane-2,3-dicarboxylate (1R,3S,4S)-2-tert-butyl 3-ethyl 5-oxo-2-azabicyclo[2.2.1]heptane-2,3-dicarboxylate 2-O-tert-butyl 3-O-ethyl (1S,3S,4S)-5-oxo-2-azabicyclo[2.2.1]heptane-2,3-dicarboxylate 2-Azabicyclo[2.2.1]heptane-2,3-dicarboxylic acid, 5-oxo-, 2-(1,1-dimethylethyl) 3-ethyl ester, (1S,3S,4S)-