(3S,4R)-4-(tert-butoxycarbonylamino)-5-methyl-3-(tert-butyldimethylsilanyloxy)hexanoic acid

(1S,5S,6R,9S,20R,E)-5-(tert-butyldimethylsilyloxy)-6-isopropyl-20-methyl-2-oxa-11,12-dithia-7,19,22-triazabicyclo[7.7.6]docos-15-ene-3,8,18,21-tetraone

(2S,6R,9S,12R,13S)-13-(tert-butyldimethylsiloxy)-12-isopropyl-6-methyl-2-[(E)-4-(tritylthio)but-1-enyl]-9-(tritylthiomethyl)-1-oxa-5,8,11-triazacyclopentadecane-4,7,10,15-tetraone

(3S,4R)-allyl 3-(tert-butyldimethylsiloxy)-4-{(S)-2-[(R)-2-[(S,E)-3-hydroxy-7-(tritylthio)hept-4-enoylamino]propionylamino]-3-tritylthio(propionylamino)}-5-methylhexanoate

(7S,11R,14S,17R,18S,E)-18-(tert-butyldimethylsilyloxy)-7-hydroxy-17-isopropyl-11-methyl-9,12,15-trioxo-1,1,1-triphenyl-14-tritylthiomethyl-2-thia-10,13,16-triazaicos-5-en-20-oic acid

(3S,4R)-allyl 4-[(S)-2-(tert-butoxycarbonylamino)-3-(tritylthio)propanamido]-3-(tert-butyldimethylsiloxy)-5-methylhexanoate

(3S,4R)-allyl 4-[(S)-2-amino-3-(tritylthio)propanamido]-3-(tert-butyldimethylsiloxy)-5-methylhexanoate

(3S,4R)-allyl 4-amino-3-(tert-butyldimethylsiloxy)-5-methylhexanoate

(3S,4R)-allyl 3-(tert-butyldimethylsiloxy)-4-{(S)-2-[(R)-2-[(S,E)-3-(4-methoxybenzyloxy)-7-(tritylthio)hept-4-enoylamino]propionylamino]-3-tritylthio(propionylamino)}-5-methylhexanoate

tert-butyl ((3S,7S,10R,11S,15S,18S,23aS)-11-hydroxy-18-isobutyl-10,15-diisopropyl-3-(4-methoxybenzyl)-2-methyl-1,4,8,13,16,19-hexaoxoicosahydro-15H-pyrrolo[1,2-g][1,13]dioxa[4,7,10,17]tetraazacyclohenicosin-7-yl)carbamate

((S)-2-(((3S,4R)-4-((2S,3R)-2-((tert-butoxycarbonyl)amino)-3-(((S)-3-(4-methoxyphenyl)-2-(methylamino)propanoyl)oxy)butanamido)-3-hydroxy-5-methylhexanoyl)oxy)-3-methylbutanoyl)-L-leucyl-L-alanine