Cis, trans isomerism of the eleostearate isomers

Abstract

Summary The cis, trans isomers of the conjugated trienes present a difficult problem for complete determination of structure. Several methods of attack have been outlined, and application of two of them have been made to α and β eleostearic acids, α and β licanic acids, and to pseudoeleostearic acid. These results indicate the following structures: α eleostearic: cis‐9, trans‐11, trans‐13 β eleostearic: trans‐9, trans‐11, trans‐13 pseudoeleostearic: trans‐10, trans‐12, trans‐14 α licanic: 4‐keto, cis‐9, trans‐11, trans‐13 β licanic: 4‐keto, trans‐9, trans‐11, trans‐13