2-(3-tert-butoxycarbonylamino-2,2-dimethyl-propionyloxy)-4-methyl-pentanoic acid 4-[2-(3-chloro-4-methoxy-phenyl)-1-(2,2,2-trichloro-ethoxycarbonyl)-ethylcarbamoyl]-1-(2,3-dihydroxy-1-methyl-3-phenyl-propyl)-but-3-enyl ester

(S)-2-{3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2,2-dimethyl-propionyloxy}-4-methyl-pentanoic acid benzyl ester

ethyl (3R)-2-acetoxy-3-[(4R,5R)-2,2-dimethyl-5-phenyl-1,3-dioxolan-4-yl]butanoate

(S)-2-{3-[(R)-2-tert-Butoxycarbonylamino-3-(3-chloro-4-methoxy-phenyl)-propionylamino]-2,2-dimethyl-propionyloxy}-4-methyl-pentanoic acid

(3S,4S)-3-(allyloxy)-4-[(4R,5R)-2,2-dimethyl-5-phenyl-1,3-dioxolan-4-yl]pentanal