Acetic acid (R)-1-((R)-1-phenyl-ethyl)-octyl ester

(3R,4S)-4-tert-Butoxycarbonylamino-3-(tert-butyl-dimethyl-silanyloxy)-5-phenyl-pentanoic acid

(3R,4S)-4--3-(methoxymethoxy)-5-phenylpentanoic acid

(2S,3R)-3-hydroxy-2-methyl-4-pentenoic acid methyl ester

(3R,4S)-N-(tert-butoxycarbonyl)-4-amino-3-(tert-butyldimethylsilyloxy)-5-phenylpent-1-ene