tert-butyl (2S)-{[(2R)-3-({N-[(9H-fluoren-9-ylmethoxy)carbonyl]-D-phenylalanyl}amino)-2-methylpropanoyl]oxy}-4-methylpentanoate

(S)-2-{(R)-3-[(R)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-3-phenyl-propionylamino]-2-methyl-propionyloxy}-4-methyl-pentanoic acid

tert-butyl (2S)-2-{[(2R)-3-({3-chloro-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-O-methyl-D-tyrosyl}amino)-2-methylpropanoyl]oxy}-4-methylpentanoate

tert-butyl (2E,5S,6R,7E)-5-[(2S)-2-{[(2R)-3-({N-[(9H-fluoren-9-yl-methoxy)carbonyl]-D-phenylalanyl}amino)-2-methylpropanoyl]oxy}-4-methylpentanoyloxy]-6-methyl-8-phenylocta-2,7-dienoate

tert-butyl (2E,5S,6R,7E)-5-[(2S)-2-{[(2R)-3-({3-chloro-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-O-methyl-D-tyrosyl}amino)-2-methylpropanoyl]oxy}-4-methylpentanoyloxy]-6-methyl-8-phenylocta-2,7-dienoate