cis‐5,cis‐9,cis‐12‐octadecatrienoic and some unusual oxygenated acids inXeranthemum annuum seed oil

Abstract
Seed oil ofXeranthemum annuum (family Compositae) contains a number of unusual fatty acids in addition to palmitic, stearic, oleic, linoleic and linolenic. These acids includecis‐5,cis‐9,cis‐12‐octadecatrienoic, 5%;cis‐9‐l,10‐l‐epoxyoctadecanoic, 3%;cis‐9‐l,10‐l‐epoxy‐cis‐12‐octadecenoic (coronaric), 8%; andcis‐12‐d,13‐d‐epoxy‐cis‐9‐octadecenoic (vernolic), 2%; as well as a mixture of two hydroxy acids, 11%. The absolute configurations of the two 9,10‐epoxy acids are established for the first time.