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Boc-3,4-dehydro-pro-oh51154-06-441 % similar 1-(tert-Butoxycarbonyl)-3-(cyanomethylene)azetidine1153949-11-140 % similar (R)-tert-Butyl 1-methyl-2-oxoimidazolidine-4-carboxylate143996-78-540 % similar 1,2-Bis(1,1-dimethylethyl) (2S)-4-oxo-1,2-pyrrolidinedicarboxylate166410-05-540 % similar 3-(N-tert-Butoxycarbonyl-N-methylamino)pyrrolidine172478-00-140 % similar tert-Butyl 2-oxo-6-azaspiro[3.4]octane-6-carboxylate203661-71-640 % similar tert-Butyl 4,7-diazaspiro(2.5)octane-4-carboxylate674792-08-640 % similar tert-Butyl 2,6-diazaspiro[3.4]octane-2-carboxylate885270-84-840 % similar tert-Butyl 4,7-diazaspiro(2.5)octane-7-carboxylate886766-28-540 % similar tert-Butyl 4-hydroxypiperidine-1-carboxylate109384-19-240 % similar tert-Butyl octahydropyrrolo(3,4-c)pyrrole-2-carboxylate141449-85-640 % similar 1-Boc-azetidine-3-ylmethanol142253-56-340 % similar Boc-N,2-dimethylalanine146000-39-740 % similar cis-tert-Butyl 5-oxohexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate146231-54-140 % similar tert-Butyl 1-oxa-6-azaspiro(2.5)octane-6-carboxylate147804-30-640 % similar N-Boc-hexahydro-5-oxocyclopenta[C]pyrrole148404-28-840 % similar 4-Chloro-piperidine-1-carboxylic acid tert-butyl ester154874-94-940 % similar tert-Butyl 4-bromopiperidine-1-carboxylate180695-79-840 % similar tert-Butyl (2R,6S)-2,6-dimethylpiperazine-1-carboxylate180975-66-040 % similar 1-Boc-pyrrolidine-2,4-dione182352-59-640 % similar