1-tert-butyl 2-methyl (2S)-1,2,3,4-tetrahydropyridine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-2,3-dihydro-1H-pyrrole-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-2-(hydroxymethyl)pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-2-formylpyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-2,5-dihydro-1H-pyrrole-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-4-(trifluoroacetyl)-2,3-dihydro-1H-pyrrole-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-4-methylidenepyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-4-oxopiperidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-4-oxopyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-4-{3-iodobicyclo[1.1.1]pentan-1-yl}pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-4-{bicyclo[1.1.1]pentan-1-yl}pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-5-bromo-1,2,3,4-tetrahydropyridine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-piperazine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S)-pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4R)-4-aminopyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4R)-4-aminopyrrolidine-1,2-dicarboxylate; oxalic acid

1-tert-butyl 2-methyl (2S,4R)-4-azidopyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4R)-4-bromopyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4R)-4-fluoropyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4R)-4-hydroxypyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4R)-4-sulfanylpyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4S)-4-(acetylsulfanyl)pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4S)-4-(chlorosulfonyl)pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4S)-4-aminopyrrolidine-1,2-dicarboxylate hydrochloride

1-tert-butyl 2-methyl (2S,4S)-4-azidopyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4S)-4-hydroxypyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (2S,4S,5S)-4-hydroxy-5-methylpyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl (4E)-4-[(tetramethyl-1,3,2-dioxaborolan-2-yl)methylidene]pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl 1,2,3,4-tetrahydropyridine-1,2-dicarboxylate

1-tert-butyl 2-methyl 1,2,3,6-tetrahydropyridine-1,2-dicarboxylate

1-tert-butyl 2-methyl 1,2,5,6-tetrahydropyridine-1,2-dicarboxylate

1-tert-butyl 2-methyl 1,4,5,6-tetrahydropyridine-1,2-dicarboxylate

1-tert-butyl 2-methyl 1H-pyrrole-1,2-dicarboxylate

1-tert-butyl 2-methyl 2,5-dihydro-1H-pyrrole-1,2-dicarboxylate

1-tert-butyl 2-methyl 2-(cyanomethyl)pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl 2-(hydroxymethyl)pyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl 2-methyl-1,2,5,6-tetrahydropyridine-1,2-dicarboxylate

1-tert-butyl 2-methyl 2-methyl-2,5-dihydro-1H-pyrrole-1,2-dicarboxylate

1-tert-butyl 2-methyl 2-methyl-4-methylidenepyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl 2-methylazetidine-1,2-dicarboxylate

1-tert-butyl 2-methyl 2-methylpiperazine-1,2-dicarboxylate

1-tert-butyl 2-methyl 3-methylideneazetidine-1,2-dicarboxylate

1-tert-butyl 2-methyl 3-methylpyrrolidine-1,2-dicarboxylate

1-tert-butyl 2-methyl 3-oxoazetidine-1,2-dicarboxylate