Tanacetum (Chrysanthemum) corymbosum seed oil--a rich source of a novel conjugated acetylenic acid.
A new conjugated trans,trans-diunsaturated acetylenic acid (17%), found for the first time in nature as a main component of the seed oil of Tanacetum (Chrysanthemum) corymbosum, was shown to be octadeca-8t,10t-dien-12-ynoic acid. Another already known naturally occurring acetylenic acid, crepenynic acid (10%), was found also in the seed oil. The structure of this new unusual fatty acid was confirmed by chromatographic (thin-layer chromatography, gas chromatography, high-performance liquid chromatography) and spectroscopic (infrared, ultraviolet, mass spectrometry) methods by using different chemical derivatizations (deuteration, preparation of picolinyl ester, dimethyloxazoline, and maleic anhydride adduct).
Department of Animal and Plant Sciences, University of Sheffield, United Kingdom.
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Christie
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D000480:Alkynes; D002851:Chromatography, High Pressure Liquid; D011723:Chrysanthemum cinerariifolium / Q000737:chemistry*; D005231:Fatty Acids, Unsaturated / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D010936:Plant Extracts / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D000480:Alkynes; D005231:Fatty Acids, Unsaturated; D010936:Plant Extracts; D010938:Plant Oils; C031203:2-hexadecynoic acid