(2S,3R)-3-Hydroxy-2-methyl-decanoic acid (S)-1-{[(1S,2R)-1-benzyl-2-(tert-butyl-dimethyl-silanyloxy)-4-oxo-butyl]-methyl-carbamoyl}-2-methyl-propyl ester

(3S,6S,7R,11R,12S)-12-Benzyl-11-(tert-butyl-dimethyl-silanyloxy)-7-heptyl-3-isopropyl-1,6-dimethyl-1,4,8-triaza-cyclododecane-2,5,9-trione

{(R)-1-[(S)-1-((S)-1-{[(1S,2R)-1-Benzyl-2-(tert-butyl-dimethyl-silanyloxy)-pent-4-enyl]-methyl-carbamoyl}-2-methyl-propylcarbamoyl)-ethyl]-octyl}-carbamic acid benzyl ester

(3R,4S)-4-{[(S)-2-((2S,3R)-3-Benzyloxycarbonylamino-2-methyl-decanoylamino)-3-methyl-butyryl]-methyl-amino}-3-(tert-butyl-dimethyl-silanyloxy)-5-phenyl-pentanoic acid

[(R)-1-((S)-1-{(S)-1-[((1S,2R)-1-Benzyl-2-hydroxy-pent-4-enyl)-methyl-carbamoyl]-2-methyl-propylcarbamoyl}-ethyl)-octyl]-carbamic acid benzyl ester