p. 2126 - 2139
(2007/10/02)(S)-1-(methoxycarbonyl)pyrrolidine-2-carboxylic acid
L-proline
N-methoxycarbonyl-L-glutamine methyl ester
(2S,5RS)-1,2-dimethyl-5-hydroxypyrrolidine-1,2-dicarboxylate
N-methoxycarbonyl-4-cyano-L-2-aminobutyric acid methyl ester