(S)-(Z)-4-ethyl hydrogen 7-methyl-8-(tetrahydropyran-2-yloxy)-3-triisopropylsilyloxymethyl-4-azaoct-6-ene-1,4-dioate

[2S-(2α,3β,4β)]-[2-(methoxymethoxy)methyl-4-(1-methylethenyl)-1-(4-methylphenyl)sulfonyl-3-(phenylsulfonyl)methyl]pyrrolidine

methyl [2S-(2α,3β,4β)]-[2-(methoxymethoxy)methyl-4-(1-methylethenyl)-1-[(4-methylphenyl)sulfonyl]-α-phenylsulfonyl]-3-pyrrolidineacetate

[2S-(2α,3β,4β)]-[2-(methoxymethoxy)methyl-4-(1-methylethenyl)-1-(4-methylphenyl)sulfonyl-3-(phenylsulfanyl)methyl]pyrrolidine

tert-butyl 2-((6R,7S,7aS)-6-formyl-3-oxohexahydropyrrolo[1,2-c]oxazol-7-yl)acetate