2-Methylamino-benzoic acid (2E,6E)-8-{(R)-2-[((S)-1-{(S)-2-[2-((S)-2-amino-4-methylsulfanyl-butyrylamino)-acetylamino]-4-methyl-pentanoyl}-pyrrolidine-2-carbonyl)-amino]-2-methoxycarbonyl-ethylsulfanyl}-2,6-dimethyl-octa-2,6-dienyl ester

N-(9-fluorenylmethyloxycarbonyl)-L-methionylglycine

2-methylamino-benzoic acid 8-(2-{[1-(2-{2-[2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-methylsulfanyl-butyrylamino]-acetylamino}-4-methyl-pentanoyl)-pyrrolidine-2-carbonyl]-amino}-2-methoxycarbonyl-ethylsulfanyl)-2,6-dimethyl-octa-2,6-dienyl ester

(2E,6E)-2,6-dimethyl-8-((tetrahydro-2H-pyran-2-yl)oxy)octa-2,6-dien-1-ol

(E,E)-8-O-(2-N-methyl-aminobenzoyl)-3,7-dimethyl-2,6-octadiene-1-chloride

2-Methylamino-benzoic acid (2E,6E)-8-hydroxy-2,6-dimethyl-octa-2,6-dienyl ester

2-Methylamino-benzoic acid (2E,6E)-2,6-dimethyl-8-(tetrahydro-pyran-2-yloxy)-octa-2,6-dienyl ester

2-Methylamino-benzoic acid (2E,6E)-8-((R)-2-amino-2-methoxycarbonyl-ethylsulfanyl)-2,6-dimethyl-octa-2,6-dienyl ester

N-(9-fluorenylmethyloxycarbonyl)-L-methionylglycine allyl ester

N-(9-fluorenylmethyloxycarbonyl)-L-methionylglycyl-L-leucyl-L-proline

N-(9-fluorenylmethyloxycarbonyl)-L-methionylglycyl-L-leucyl-L-proline allyl ester