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N-Boc-4,4-difluoro-L-proline methyl ester203866-17-558 % similar 1-tert-Butyl 2-methyl piperidine-1,2-dicarboxylate167423-93-057 % similar tert-Butyl (2S,4S)-2-cyano-4-fluoropyrrolidine-1-carboxylate426844-76-057 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-155 % similar (S)-1-N-Boc-piperazine-2-carboxylic acid methyl ester796096-64-555 % similar 1-tert-Butyl 2-methyl 4-oxopiperidine-1,2-dicarboxylate81357-18-855 % similar N-Boc-3,4-dehydro-L-proline methyl ester74844-93-254 % similar 1-tert-Butyl 3-methyl azetidine-1,3-dicarboxylate610791-05-453 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4R)-4-[[(4-methylphenyl)sulfonyl]oxy]-1,2-pyrrolidinedicarboxylate88043-21-452 % similar 3-tert-Butyl 4-methyl (4S)-2,2-dimethyl-1,3-oxazolidine-3,4-dicarboxylate108149-60-651 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S)-5-oxo-1,2-pyrrolidinedicarboxylate108963-96-851 % similar (R)-Methyl-3-(tert-butoxycarbonyl)-2,2-dimethyl-4-oxazolidinecarboxylate95715-86-951 % similar 1-tert-Butyl 3-methyl pyrrolidine-1,3-dicarboxylate122684-33-749 % similar (S)-1-Boc-pyrrolidine-3-carboxylic acid methyl ester313706-15-949 % similar 1-tert-Butyl 3-methyl (3R)-pyrrolidine-1,3-dicarboxylate441717-40-449 % similar Methyl N-boc-piperidine-3-carboxylate148763-41-148 % similar 1-(1,1-Dimethylethyl) 4-methyl 1,4-piperidinedicarboxylate124443-68-148 % similar 1-tert-Butyl 3-methyl piperazine-1,3-dicarboxylate129799-08-246 % similar 1-tert-Butyl 3-methyl 4-oxopiperidine-1,3-dicarboxylate161491-24-346 % similar 1-(1,1-Dimethylethyl) 3-methyl (3S)-1,3-piperazinedicarboxylate314741-39-446 % similar