tert-butyl (2-((S)-2-((tert-butoxycarbonyl)amino)hex-5-enamido)-2-methylpropanoyl)-L-phenylalanyl-D-prolinate

(-)-(3S,9S,14aR)-9-benzyl-3-[(R)-7-hydroxy-6-oxooctyl]-6,6-dimethyldecahydropyrrolo[1,2-a][1,4,7,10]tetraazacyclododecine-1,4,7,10-tetraone

(-)-ethyl 8-[(3S,9S,14aR)-9-benzyl-6,6-dimethyl-1,4,7,10-tetraoxotetradecahydropyrrolo[1,2-a][1,4,7,10]tetra-azacyclododecin-3-yl]-3-oxooctanoate

(-)-(3S,9S,14aR)-9-benzyl-3-[(S)-7-hydroxy-6-oxooctyl]-6,6-dimethyldecahydropyrrolo[1,2-a][1,4,7,10]tetraazacyclododecine-1,4,7,10-tetraone

S-(S)-1-[(3S,9S,14aR)-9-benzyl-6,6-dimethyl-1,4,7,10-tetraoxotetradecahydropyrrolo[1,2-a][1,4,7,10]tetraazacyclododecin-3-yl]-7-(tert-butyldimethylsilyloxy)-6-oxooctan-3-yl O-ethyl carbonodithioate

(-)-(3S,9S,14aR)-9-benzyl-3-[(R)-7-(tert-butyldimethylsilyloxy)-6-oxooctyl]-6,6-dimethyldecahydropyrrolo[1,2-a][1,4,7,10]tetraazacyclododecine-1,4,7,10-tetraone

benzyl 6-[(3S,9S,14aR)-9-benzyl-6,6-dimethyl-1,4,7,10-tetraoxotetradecahydropyrrolo[1,2-a][1,4,7,10]tetraazacyclododecin-3-yl]-4-(ethoxycarbonothioylthio)hexanoate