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 1-(1,1-Dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate84348-37-869 % similar tert-Butyl 3-oxoazetidine-1-carboxylate398489-26-451 % similar tert-Butyl 2-methyl-4-oxopiperidine-1-carboxylate190906-92-451 % similar tert-Butyl 4-oxopiperidine-1-carboxylate79099-07-349 % similar N-Boc-3,4-dehydro-L-proline methyl ester74844-93-248 % similar N-Boc-cis-2,6-diethyl-4-piperidone1003843-30-847 % similar N-Boc-cis-4-hydroxy-L-proline methyl ester102195-79-946 % similar (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 1-(1,1-Dimethylethyl) 2-methyl (2S,4S)-4-fluoro-1,2-pyrrolidinedicarboxylate203866-16-446 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S)-4,4-difluoro-1,2-pyrrolidinedicarboxylate203866-17-546 % similar 1-(1,1-Dimethylethyl) 2-methyl (2S,4R)-4-fluoro-1,2-pyrrolidinedicarboxylate203866-18-646 % similar (2S,4R)-4-Hydroxypyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester74844-91-046 % similar 1,1-Dimethylethyl (2S)-2-formyl-1-pyrrolidinecarboxylate69610-41-945 % similar 1,1-Dimethylethyl (2R)-2-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-1-pyrrolidinecarboxylate102185-34-245 % similar 1-O-tert-Butyl 2-O-(2,5-dioxopyrrolidin-1-yl) (2S)-pyrrolidine-1,2-dicarboxylate3392-10-745 % similar 1,1-Dimethylethyl 5-oxo-2-azabicyclo[2.2.1]heptane-2-carboxylate198835-06-244 % similar