1-tert-Butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate161491-24-3100 % similar 1-(1,1-Dimethylethyl) 3-ethyl 4-oxo-1,3-piperidinedicarboxylate98977-34-573 % similar 1-tert-Butyl 3-methyl pyrrolidine-1,3-dicarboxylate122684-33-762 % similar Methyl N-boc-piperidine-3-carboxylate148763-41-161 % similar 1-tert-Butyl 3-methyl azetidine-1,3-dicarboxylate610791-05-460 % similar 1,1-Dimethylethyl 3-fluoro-4-oxo-1-piperidinecarboxylate211108-50-860 % similar 1-(1,1-Dimethylethyl) 3-methyl (3S)-1,3-piperazinedicarboxylate314741-39-458 % similar 1-(1,1-Dimethylethyl) 3-methyl (3R)-1,3-piperazinedicarboxylate438631-77-758 % similar 1-tert-Butyl 4-ethyl 5-oxoazepane-1,4-dicarboxylate141642-82-258 % similar 1-(1,1-Dimethylethyl) 4-methyl 1,4-piperidinedicarboxylate124443-68-158 % similar 1-(1,1-Dimethylethyl) 3-ethyl 4-oxo-1,3-pyrrolidinedicarboxylate146256-98-655 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-349 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S)-5-oxo-1,2-pyrrolidinedicarboxylate108963-96-848 % similar 1-tert-Butyl 2-methyl piperidine-1,2-dicarboxylate167423-93-048 % similar Methyl 4-[(1,1-dimethylethoxy)carbonyl]-2-piperazineacetate183742-33-847 % similar 1-(1,1-Dimethylethyl) 4-ethyl 3-oxo-1,4-piperidinedicarboxylate71233-25-547 % similar 1-(1,1-Dimethylethyl) 3-ethyl 1,3-pyrrolidinedicarboxylate170844-49-247 % similar tert-Butyl (3R)-3-hydroxypyrrolidine-1-carboxylate109431-87-047 % similar (R)-tert-Butyl 3-aminopyrrolidine-1-carboxylate147081-49-047 % similar N-Boc-cis-4-hydroxy-L-proline methyl ester102195-79-946 % similar