(Z)-(2S,3R)-3-[(tert-butyloxycarbonyl)amino]-2-methyl-5-nonenedioic acid 9-ethyl ester

tert-butyl ((2S,3R)-1-((tert-butyldiphenylsilyl)oxy)-5-hydroxy-2-methylpentan-3-yl)carbamate

(3R,4S)-3-[(tert-butyloxycarbonyl)amino]-5-[(tert-butyldiphenylsilyl)oxy]-4-methylpentanal

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

(7R,8S,Z)-7-((tert-butoxycarbonyl)amino)-9-((tert-butyldiphenylsilyl)oxy)-8-methylnon-4-enoic acid