The fatty acid composition of gymnospermae seed and leaf oils

Abstract

Abstract Of 12 Gymnospermae seed and leaf oils, only 2 contained cyclopropene fatty acids. All‐ cis 5, 11, 14, 17‐eicosatetraenoic acid occurred in concentrations up to 11.9% in 6 seed oils, and up to 61% in 2 leaf oils. The structure of this acid, as its methyl ester, was established by the combination of physical (UV, IR, 1 H‐ and 13 C‐NMR and mass spectra) and chemical techniques. Arachidonic acid also occurred in 2 seed oils.