(R,Z)-7-(3-((tert-butyldimethylsilyl)oxy)-5-oxocyclopent-1-en-1-yl)hept-5-enoic acid

(R)-2-((((R)-4-hydroxy-2-((Z)-7-methoxy-7-oxohept-2-en-1-yl)cyclopent-2-en-1-ylidene)amino)oxy)-4-methylpentanoic acid

7-<(R,S)-4-Hydroxy-2-methoxy-5-oxocyclopent-1-enyl>-(Z)-hept-5-ensaeure-methylester

Methyl (5Z)-7-(3-hydroxy-5-oxo-1-cyclopenten-1-yl)-5-heptenoate

methyl 7-iodohept-5-enoate