(R)-tert-butyl 2-((R)-2-aminopropanamido)-3-phenylpropanoate

ethyl (7R,8S,Z)-7-((tert-butoxycarbonyl)amino)-9-hydroxy-8-methylnon-4-enoate

tert-butyl (6R,7S,10R,13R,16R)-16-benzyl-6-((Z)-6-ethoxy-6-oxohex-2-en-1-yl)-10-isopropyl-2,2,7,13-tetramethyl-4,8,11,14-tetraoxo-3-oxa-5,9,12,15-tetraazaheptadecan-17-oate