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1-(1,1-Dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate84348-37-840 % similar 1-(tert-Butoxycarbonyl)-4-oxopyrrolidine-2-carboxylic acid876317-19-040 % similar 1-tert-Butyl 2-methyl (2S,4R)-4-aminopyrrolidine-1,2-dicarboxylate121148-00-340 % similar 1,1-Dimethylethyl (2R,5R)-5-(hydroxymethyl)-2-methyl-1-piperazinecarboxylate1403898-64-540 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4S)-4-fluoro-1,2-pyrrolidinedicarboxylate203866-16-440 % similar (2S,4R)-1-tert-Butyl 2-methyl 4-fluoropyrrolidine-1,2-dicarboxylate203866-18-640 % similar 1-tert-Butyl 2-methyl (2R,4S)-4-aminopyrrolidine-1,2-dicarboxylate254881-77-140 % similar 1-(1,1-Dimethylethyl) (2S)-4,4-dimethyl-1,2-pyrrolidinedicarboxylate1001353-87-239 % similar 1-[(tert-Butoxy)carbonyl]piperidine-2-carboxylic acid118552-55-939 % similar tert-Butyl 2-(2-hydroxyethyl)piperidine-1-carboxylate118811-03-339 % similar tert-Butyl (3R)-3-(hydroxymethyl)morpholine-4-carboxylate215917-99-039 % similar (2S)-1-((tert-Butoxy)carbonyl)piperidine-2-carboxylic acid26250-84-039 % similar (R)-(+)-N-Boc-2-piperidinecarboxylic acid28697-17-839 % similar (S)-tert-Butyl 3-(hydroxymethyl)morpholine-4-carboxylate714971-28-539 % similar N-Boc-2-piperidinecarboxylic acid98303-20-939 % similar tert-Butyl 3-formylazetidine-1-carboxylate177947-96-539 % similar tert-Butyl 3-methoxyazetidine-1-carboxylate429669-07-839 % similar 3,6-Diazabicyclo[3.1.1]heptane-6-carboxylic acid tert-butyl ester869494-16-639 % similar 1-(tert-Butoxycarbonyl)-3-(cyanomethylene)azetidine1153949-11-139 % similar (1R,5S,6r)-3-(tert-Butoxycarbonyl)-3-azabicyclo[3.1.0]hexane-6-carboxylic acid1401464-07-039 % similar