(S)-2-(1,4-dioxohexahydropyrrolo[1,2-a]pyrazin-3(Z)-ylidenemethyl)-5-methylhexa-2(E),4-dienoic acid, N-(2-iodophenyl)-N-[2-(trimethylsilyl)ethoxymethyl]amide

methyl 3-hydroxy-5-methyl-2-methylene-4-hexenoate

2-acetoxymethyl-5-methyl-2(E),5-dienoic acid methyl ester

(Z)-2-iodo-1-(tert-butyldiphenylsiloxy)-5-methylhexa-2(Z),4-diene

2-(tert-butyldiphenylsiloxymethyl)-5-methyl-2(E),5-dienoic acid N-(2-iodophenyl)amide