英文别名(S)-1-tert-Butyl 2-ethyl 2,3-dihydro-1H-pyrrole-1,2-dicarboxylate; Ethyl N-Boc-L-proline-4-ene; Saxagliptin Intermediate 1; ethyl N-Boc-4,5-dehydroprolinate; 1-O-tert-butyl 2-O-ethyl (2S)-2,3-dihydropyrrole-1,2-dicarboxylate; (5S)-4,5-dihydro-1H-pyrrole-1,5-dicarboxylic acid 1-(1,1-dimethylethyl)-5-ethyl ester; 1-tert-butyl 2-ethyl (2S)-2,3-dihydro-1H-pyrrole-1,2-dicarboxylate; (S)-2,3-dihydro-pyrrole-1,2-dicarboxylicacid 1-tert-butyl ester 2-ethyl ester; (5S)-N-(tert-butoxycarbonyl)-5-ethoxycarbonyl-2-pyrroline; 2-Ethyl 1-(2-methyl-2-propanyl) (2S)-2,3-dihydro-1H-pyrrole-1,2-dicarboxylate 
