(4R,5E,8S)-4-t-butoxycarbonylamino-8-(1-ethylcyclobutyl)-8-(tetrahydropyran-2-yloxy)oct-5-enoic acid ethyl ester

ethyl (4R,7S,E)-4-((tert-butoxycarbonyl)amino)-8-(3-chlorophenyl)-7-hydroxyoct-5-enoate

ethyl 2-(3-((R)-2-((S,E)-3-hydroxy-4-(m-tolyl)but-1-en-1-yl)-5-oxopyrrolidin-1-yl)propyl)thiazole-4-carboxylate

ethyl (4R,5E,7S)-4-amino-8-(3-chlorophenyl)-7-hydroxy-5-octenoate trifluoroacetate

methyl [3-(2-{(2R)-2-[(1E,3S)-4-(3-chlorophenyl)-3-hydroxy-1-buten-1-yl]-5-oxo-1-pyrrolidinyl}ethyl)phenyl]acetate