p. 3607 - 3612
(1996)N-(tert-butyloxycarbonyl)-S-(4-methoxybenzyl)cysteine
L-prolinamide hydrochloride
[(S)-2-{(S)-2-[(R)-2-((S)-2-Carbamoyl-pyrrolidin-1-yl)-1-(3-nitro-pyridin-2-yldisulfanylmethyl)-2-oxo-ethylcarbamoyl]-pyrrolidin-1-yl}-1-(4-hydroxy-benzyl)-2-oxo-ethyl]-carbamic acid tert-butyl ester
[(S)-2-{(S)-2-[(R)-2-((S)-2-Carbamoyl-pyrrolidin-1-yl)-1-(4-methoxy-benzylsulfanylmethyl)-2-oxo-ethylcarbamoyl]-pyrrolidin-1-yl}-1-(4-hydroxy-benzyl)-2-oxo-ethyl]-carbamic acid tert-butyl ester