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1,2-Bis(1,1-dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate166410-05-5100 % similar 1-tert-Butyl 2-methyl (2S)-4-oxopyrrolidine-1,2-dicarboxylate102195-80-281 % similar (R)-1-tert-Butyl 2-methyl 4-oxopyrrolidine-1,2-dicarboxylate256487-77-181 % similar 1-(1,1-Dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate84348-37-869 % similar 1-(tert-Butoxycarbonyl)-4-oxopyrrolidine-2-carboxylic acid876317-19-069 % similar 1-tert-Butyl 2-methyl 4-oxopiperidine-1,2-dicarboxylate81357-18-863 % similar tert-Butyl (2S)-4-oxo-2-(1,3-thiazolidin-3-yl carbonyl)pyrrolidine-1-carboxylate401564-36-157 % similar 3-Oxo-azetidine-1-carboxylic acid tert-butyl ester398489-26-451 % similar tert-Butyl 2-methyl-4-oxopiperidine-1-carboxylate190906-92-451 % similar Azetidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester255882-72-551 % similar 1-Piperidinecarboxylicacid,2-methyl-4-oxo-,1,1-dimethylethylester,(2R)-(9ci)790667-43-551 % similar Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate91229-91-351 % similar (S)-4-Methylene-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester84348-38-951 % similar 3-Oxopyrrolidine-1-carboxylic acid tert-butyl ester101385-93-750 % similar Boc-L-pro-ome59936-29-749 % similar Boc-D-pro-ome73323-65-649 % similar cis-tert-Butyl 5-oxohexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate146231-54-149 % similar N-Boc-hexahydro-5-oxocyclopenta[C]pyrrole148404-28-849 % similar N-Boc-nortropinone185099-67-649 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-349 % similar