(4S,11S,14S,17S)-4,11,17-Triisopropyl-14-((R)-1-trityloxy-ethyl)-19-oxa-6-thia-3,10,13,16,21,22-hexaaza-tricyclo[16.2.1.15,8]docosa-1(20),5(22),7,18(21)-tetraene-2,9,12,15-tetraone

2-[1-({2-[1-({2-[1-(9H-fluoren-9-ylmethoxycarbonylamino)-2-methyl-propyl]-5-methyl-4,5-dihydro-oxazole-4-carbonyl}-amino)-2-methyl-propyl]-4,5-dihydro-oxazole-4-carbonyl}-amino)-2-methyl-propyl]-thiazole-4-carboxylic acid allyl ester

2-[(S)-1-({2-[(S)-1-({2-[(S)-1-(9H-Fluoren-9-ylmethoxycarbonylamino)-2-methyl-propyl]-5-methyl-oxazole-4-carbonyl}-amino)-2-methyl-propyl]-oxazole-4-carbonyl}-amino)-2-methyl-propyl]-thiazole-4-carboxylic acid allyl ester

bistartamide E

2-((S)-1-{[2-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carboxylic acid allyl ester