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(2R,4R)-4-Hydroxy-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester114676-69-646 % similar 1-tert-Butyl 2-methyl (2S,4R)-4-aminopyrrolidine-1,2-dicarboxylate121148-00-346 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-146 % similar Ethyl 1-boc-3-piperidinecarboxylate130250-54-346 % similar 1-tert-Butyl 2-methyl (2R,4S)-4-hydroxypyrrolidine-1,2-dicarboxylate135042-17-046 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4S)-4-fluoro-1,2-pyrrolidinedicarboxylate203866-16-446 % similar N-Boc-4,4-difluoro-L-proline methyl ester203866-17-546 % similar (2S,4R)-1-tert-Butyl 2-methyl 4-fluoropyrrolidine-1,2-dicarboxylate203866-18-646 % similar 1-tert-Butyl 2-methyl (2R,4S)-4-aminopyrrolidine-1,2-dicarboxylate254881-77-146 % similar (2S,4R)-4-Hydroxypyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester74844-91-046 % similar (S)-1-N-Boc-piperazine-2-carboxylic acid methyl ester796096-64-546 % similar 1-tert-Butyl 2-methyl (2S)-4-oxopyrrolidine-1,2-dicarboxylate102195-80-246 % similar tert-Butyl (3S,4R)-3-fluoro-4-hydroxypiperidine-1-carboxylate1174020-40-646 % similar 1,1-Dimethylethyl (3R,4S)-3-fluoro-4-hydroxy-1-piperidinecarboxylate1174020-42-846 % similar tert-Butyl 4-(2-methoxy-2-oxoethyl)piperidine-1-carboxylate175213-46-446 % similar (R)-1-tert-Butyl 2-methyl 4-oxopyrrolidine-1,2-dicarboxylate256487-77-146 % similar tert-Butyl (R)-3-formylpyrrolidine-1-carboxylate191347-94-146 % similar (S)-tert-Butyl 3-formylpyrrolidine-1-carboxylate191348-04-646 % similar (+-)-1-(tert-Butoxycarbonyl)pyrrolidine-3-carboxaldehyde59379-02-146 % similar tert-Butyl 6-Oxa-3-azabicyclo(3.1.0)hexane-3-carboxylate114214-49-245 % similar