(2S)-9-methylenedecahydro-10-oxo-2-azecinecarboxylic acid

6-iodo-hexa-1,2-diene

(2S)-2-amino-6,7-octadienoic acid

methyl (2S)-2-<<2-(methoxycarbonyl)acetyl>amino>-6,7-octadienoate

diethyl (acetylamino)(4,5-hexadien-1-yl)propanedioate