5(S)-(Boc-amino)-4(S)-hydroxy-6-phenyl-2(R)-phenylmethylhexanoic acid

N--(1,1-dimethylethoxycarbonyl)-5(S)-amino-4(S)-(t-butyldimethylsilyloxy)-6-phenyl-2(R)-(phenylmethyl)hexanoic acid

tert-butyldimethylsilyl (2R,4S,5S)-2-benzyl-5-((tert-butoxycarbonyl)amino)-4-((tert-butyldimethylsilyl)oxy)-6-phenylhexanoate

[(1S,2S,4R)-1-Benzyl-2-(tert-butyl-dimethyl-silanyloxy)-4-((1R,2S)-2-hydroxy-indan-1-ylcarbamoyl)-5-phenyl-pentyl]-carbamic acid tert-butyl ester