(E)-2-amino-N-(1-((tert-butyldiphenylsilyl)oxy)-3-methylpent-2-en-2-yl)acetamide

tert-butyl ((6E,12Z)-6-(butan-2-ylidene)-2,2,13-trimethyl-8,11-dioxo-3,3-diphenyl-4-oxa-7,10-diaza-3-silapentadec-12-en-12-yl)((2S,3R)-2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-methylpentanoyl)carbamate

(E)-2-(2-((tert-butoxycarbonyl)amino)acetamido)-3-methylpent-2-enoic acid

allyl (E)-2-(2-((tert-butoxycarbonyl)amino)acetamido)-3-methylpent-2-enoate

allyl (E)-2-(N-(tert-butoxycarbonyl)-2-((tert-butoxycarbonyl)amino)acetamido)-3-methylpent-2-enoate