(R)-methyl 2-[(S,E)-3-(4-methoxybenzyloxy)-7-(tritylthio)hept-4-enamido]propanoate

(R)-2-[(S,E)-3-(4-methoxybenzyloxy)-7-(tritylthio)hept-4-enamido]propanoic acid

(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

(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