p. 591 - 600
(2007/10/03)N-Benzyloxycarbonyl-L-proline
Z-Pro-NH2
(S)-2-(1-Methoxycarbonyl-2-oxo-propylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester
2-((S)-1-Benzyloxycarbonyl-pyrrolidin-2-yl)-5-methyl-oxazole-4-carboxylic acid methyl ester