p. 867 - 870
(2007/10/03)(4-nitrophenoxy)acetic acid tert-butyl ester
tert-butyl 2-(4-aminophenoxy)acetate
(S)-2-[(R)-1-(tert-Butoxycarbonylmethyl-carbamoyl)-2-phenyl-ethylcarbamoyl]-pyrrolidine-1-carboxylic acid benzyl ester
{(S)-2-[(R)-1-(tert-Butoxycarbonylmethyl-carbamoyl)-2-phenyl-ethylcarbamoyl]-pyrrolidin-1-yl}-oxo-acetic acid methyl ester
{(S)-2-[(R)-1-(Carboxymethyl-carbamoyl)-2-phenyl-ethylcarbamoyl]-pyrrolidin-1-yl}-oxo-acetic acid methyl ester