sodium 3(S)-<(benzyloxy)amino>-4(S)-<(tert-butyloxycarbonyl)amino>-2,2-difluoro-6-methylheptanoate

tert-butyl ((4S,8R,9S)-4-((R)-sec-butyl)-7,7-difluoro-9-isobutyl-8-((4-methoxyphenyl)amino)-3,6,11,14-tetraoxo-16-phenyl-1-(pyridin-2-yl)-12-((1-tosyl-1H-imidazol-4-yl)methyl)-2,5,10,13-tetraazahexadecan-15-yl)carbamate

N-amino>-2,2-difluoro-3(S)-amino-6-methylheptanoyl>-L-isoleucyl>-2-pyridylmethylamine

<4(S)-<amino>-2,2-difluoro-3(R)-hydroxy-6-methylheptanoyl>-L-isoleucyl-2-pyridylmethylamine

{(S)-1-[(S)-1-[(S)-1-((R)-2,2-Difluoro-1-hydroxy-2-{(1S,2S)-2-methyl-1-[(pyridin-2-ylmethyl)-carbamoyl]-butylcarbamoyl}-ethyl)-3-methyl-butylcarbamoyl]-2-(3H-imidazol-4-yl)-ethylcarbamoyl]-2-phenyl-ethyl}-carbamic acid tert-butyl ester