[(3S,6S,13S)-3-Methyl-2,5-dioxo-13-((S)-5-oxo-tetrahydro-furan-2-yl)-1,4-diaza-cyclotridec-6-yl]-carbamic acid tert-butyl ester

((S)-1-{(S)-1-[(S)-1-((2S,4R)-4-Methyl-5-oxo-tetrahydro-furan-2-yl)-pent-4-enylcarbamoyl]-ethylcarbamoyl}-pent-4-enyl)-carbamic acid tert-butyl ester

{(3S,6S,13S)-13-[(1S,3R)-3-((S)-1-Benzylcarbamoyl-2-methyl-propylcarbamoyl)-1-hydroxy-butyl]-3-methyl-2,5-dioxo-1,4-diaza-cyclotridec-6-yl}-carbamic acid tert-butyl ester

(3R,5S)-5-((S)-1-Amino-pent-4-enyl)-3-methyl-dihydro-furan-2-one

((S)-1-{(S)-1-[(S)-1-((S)-5-Oxo-tetrahydro-furan-2-yl)-pent-4-enylcarbamoyl]-ethylcarbamoyl}-pent-4-enyl)-carbamic acid tert-butyl ester