1-tert-butyl 3-ethyl 4-oxoazepane-1,3-dicarboxylate

1-tert-butyl 3-ethyl 4-oxopiperidine-1,3-dicarboxylate

1-tert-butyl 3-ethyl 4-oxopyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-ethyl 5,5-dimethyl-4-oxopyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-ethyl piperazine-1,3-dicarboxylate

1-tert-butyl 3-ethyl piperidine-1,3-dicarboxylate

1-tert-butyl 3-ethyl propanedioate

1-tert-butyl 3-methyl (3S)-piperazine-1,3-dicarboxylate

1-tert-butyl 3-methyl 1,2,5,6-tetrahydropyridine-1,3-dicarboxylate

1-tert-butyl 3-methyl 1,4,5,6-tetrahydropyridine-1,3-dicarboxylate

1-tert-butyl 3-methyl 1,4-diazepane-1,3-dicarboxylate

1-tert-butyl 3-methyl 1H-indole-1,3-dicarboxylate

1-tert-butyl 3-methyl 2,3-dihydro-1H-indole-1,3-dicarboxylate

1-tert-butyl 3-methyl 2-(propan-2-yl)pyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 2-ethyl-4-oxopiperidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 2-fluorobicyclo[1.1.1]pentane-1,3-dicarboxylate

1-tert-butyl 3-methyl 2-methyl-1H-pyrrole-1,3-dicarboxylate

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

1-tert-butyl 3-methyl 3-(2-oxoethyl)azetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-(4-bromo-2-chlorophenyl)pyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-(4-bromo-2-methylphenyl)pyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-(aminomethyl)azetidine-1,3-dicarboxylate hydrochloride

1-tert-butyl 3-methyl 3-(bromomethyl)azetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-(hydroxymethyl)azetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-(hydroxymethyl)pyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-(methylamino)azetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-(prop-2-yn-1-yl)azetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-({[(9H-fluoren-9-yl)methoxy]carbonyl}(methyl)amino)azetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-aminoazetidine-1,3-dicarboxylate; trifluoroacetic acid

1-tert-butyl 3-methyl 3-azidoazetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-cyclohexylazetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-ethynylazetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-formylazetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-formylpyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-hydroxyazetidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-methylpiperazine-1,3-dicarboxylate

1-tert-butyl 3-methyl 3-phenylpyrrolidine-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-(benzylamino)-1,2,5,6-tetrahydropyridine-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-(chlorosulfonyl)piperazine-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-(trifluoromethanesulfonyloxy)-1,2,5,6-tetrahydropyridine-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-amino-1,2,5,6-tetrahydropyridine-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-cyano-1,2,5,6-tetrahydropyridine-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-methyl-1,2,5,6-tetrahydropyridine-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-methylbenzene-1,3-dicarboxylate

1-tert-butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate