5-氯-2-戊酮

(3R,7aS)-7A-甲基-3-(三氯甲基)-3,5,6,7-四氢吡咯并[1,2-c]恶唑-1-酮

(2S,5S)-2-Methyl-5-phenylsulfanyl-pyrrolidine-1,2-dicarboxylic acid dimethyl ester

di-tert-butyl (S)-2-methylpyrrolidine-1,2-dicarboxylate

tert-butyl (S)-2-methyl-5-oxopyrrolidine-2-carboxylate