(5Z,8Z)-11-[tert-Butoxycarbonyl-(2-hydroxy-ethyl)-amino]-tetradeca-5,8-dienoic acid

(7Z,10Z)-15-Oxo-5-propyl-1-oxa-4-aza-cyclopentadeca-7,10-diene-4-carboxylic acid tert-butyl ester

Acetic acid 2-[tert-butoxycarbonyl-((3Z,6Z)-11-hydroxy-1-propyl-undeca-3,6-dienyl)-amino]-ethyl ester

Acetic acid 2-[tert-butoxycarbonyl-((3Z,6Z)-11-oxo-1-propyl-undeca-3,6-dienyl)-amino]-ethyl ester

(5Z,8Z)-11-((tert-butoxycarbonyl)(2-hydroxyethyl)amino)tetradeca-5,8-dienoic 2,4,6-trichlorobenzoic anhydride