p. 705 - 708
(2007/10/03)((1S,2S)-1-{(S)-1-[3-Cyano-1-(2,2-difluoro-ethyl)-2-oxo-3-(triphenyl-λ5-phosphanylidene)-propylcarbamoyl]-3-methyl-butylcarbamoyl}-2-methyl-butyl)-carbamic acid benzyl ester
(2S,3S)-2-Amino-3-methyl-pentanoic acid {(S)-1-[3-cyano-1-(2,2-difluoro-ethyl)-2-oxo-3-(triphenyl-λ5-phosphanylidene)-propylcarbamoyl]-3-methyl-butyl}-amide
(+/-)-4-(N-benzyloxycarbonyl-amino)-6,6-difluoro-3-oxo-2-triphenylphosphoranylidene-hexanenitrile
(R,S)-4-amino-6,6-difluoro-3-oxo-2-triphenylphosphoranylidene-hexanenitrile
N-Benzyloxycarbonyl-L-isoleucyl-L-leucin