N-Boc-3,4-dehydro-L-proline methyl ester74844-93-2100 % similar 1-tert-Butyl 2-methyl (2S)-4-oxopyrrolidine-1,2-dicarboxylate102195-80-258 % similar N-Boc-cis-4-hydroxy-L-proline methyl ester102195-79-954 % similar (2R,4R)-4-Hydroxy-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester114676-69-654 % similar 1-tert-Butyl 2-methyl (2S,4R)-4-aminopyrrolidine-1,2-dicarboxylate121148-00-354 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4S)-4-fluoro-1,2-pyrrolidinedicarboxylate203866-16-454 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4R)-4-fluoro-1,2-pyrrolidinedicarboxylate203866-18-654 % similar (2S,4R)-4-Hydroxypyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester74844-91-054 % similar 1-tert-Butyl 3-methyl azetidine-1,3-dicarboxylate610791-05-452 % similar 1-(1,1-Dimethylethyl) 2-methyl 1,2-piperazinedicarboxylate129799-15-151 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S)-4,4-difluoro-1,2-pyrrolidinedicarboxylate203866-17-551 % similar 1-tert-Butyl 2-methyl (2S,4R)-4-aminopyrrolidine-1,2-dicarboxylate hydrochloride334999-32-551 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4S)-4-cyano-1,2-pyrrolidinedicarboxylate487048-28-251 % similar 1-(1,1-Dimethylethyl) 4-methyl 1,4-piperidinedicarboxylate124443-68-150 % similar 1-tert-Butyl 3-methyl pyrrolidine-1,3-dicarboxylate122684-33-748 % similar 1,2-Bis(1,1-dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate166410-05-548 % similar 3-tert-Butyl 4-methyl (4S)-2,2-dimethyl-1,3-oxazolidine-3,4-dicarboxylate108149-60-647 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S)-5-oxo-1,2-pyrrolidinedicarboxylate108963-96-847 % similar (R)-Methyl-3-(tert-butoxycarbonyl)-2,2-dimethyl-4-oxazolidinecarboxylate95715-86-947 % similar N-(tert-Butoxycarbonyl)-2,5-dihydro-1H-pyrrole73286-70-146 % similar