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).
Tsevegsuren
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Department of Animal and Plant Sciences, University of Sheffield, United Kingdom.
Christie
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Lösel
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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