Phytochemical investigations of <Emphasis Type="Italic">Vernonia galamensis</Emphasis> seeds |
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| Authors: | Ashebir Fiseha Mekuria Tadesse Tesfaye Bekele Belete Bedemo |
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| Institution: | (1) Addis Ababa University, Department of Chemistry, P. O. Box 1176, Addis Ababa, Ethiopia;(2) Ethiopia Agriculture Research Institute, Essential Oils Research Center, P. O. Box 3395, Addis Ababa, Ethiopia;(3) Ethiopia Agriculture Research Institute, Essential Oils Research Center, P. O. Box 3395, Addis Ababa, Ethiopia;(4) Bahir Dar University, Department of Chemistry, P. O. Box 79, Bahir Dar, Ethiopia; |
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| Abstract: | Vernonia galamensis is a new potential industrial oil seed crop for semiarid areas with very high content of naturally epoxidized vernolic acid
(80% of the oil). Chemical investigation of the seeds of Vernonia galamensis afforded two compounds, which are vernolic acid derivatives. Their structures were established by various spectroscopic techniques:
IR, UV, NMR, and 2D NMR spectra (COSY, HSQC, and HMBC), and by comparison with literature data for the known compound methylvernolate.
The cis-(12S,13R)-(3-methylpentyl) vernolate (1) and the cis-(12S,13R)-(2,3-propanediol) vernolate (2) were isolated and characterized. |
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