5-Boc-hexahydropyrrolo[3,4-b]pyrrole;5-N-Boc-hexahydro-pyrrolo[3,4-b]pyrrole;Pyrrolo[3,4-b]pyrrole-5(1H)-carboxylic acid, hexahydro-, 1,1-dimethylethyl ester;tert-butyl hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxylate;Tert-butyl 2,7-diazabicyclo[3.3.0]octan-7-carboxylate;tert-butyl octahydropyrrolo[3,4-b]pyrrole-5-carboxylate;t-butyl hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxylate;TERT-BUTYL HEXAHYDROPYRROLO[3,4-B]PYRROLE-5(1H)-CARBOXYLAT;TERT-BUTYL HEXAHYDROPYRROLO[3,4-B]PYRROLE-5(1H)-CARBOXYLATE;Hexahydropyrrolo[3,4-b]pyrrole-5-carboxylic acid tert-butyl ester;Octahydro-pyrrolo[3,4-b]pyridine-6-carboxylic acid tert-butyl ester;tert-Butyl 2,3,3a,4,6,6a-hexahydro-1H-pyrrolo[2,3-c]pyrrole-5-carboxylate;(3aR*,6aR*)-hexahydro-pyrrolo[3,4-b]pyrrole-5-carboxylic acid tert-butyl ester