The major flavonoids of the seed of Tephrosia apollinea |
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Authors: | Peter G Waterman Sami A Khalid |
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Institution: | Department of Pharmaceutical Chemistry, University of Strathclyde, Glasgow, G1 1XW, U.K. |
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Abstract: | A total of six complex 7-oxygenated-8-prenylflavones have been isolated from the seeds of Tephrosia apollinea and identified as the diastereoisomers (?)-semiglabrin and (?)-pseudosemiglabrin, (+)-glabratephrin, (+)-glabratephrinol, appollinine (7-methoxy-8-3″-(2″,5″-dihydro-5″,5″-dimethyl-2″-oxofuryl)]-flavone and lanceolatin-A. The use of 13C NMR in the structure elucidation of flavones of this type is discussed. The potential chemotaxonomic value of Tephrosia flavones of the type isolated from T. apollinea is explored. |
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Keywords: | Leguminosae 7-oxygenated flavones semiglabrin pseudosemiglabrin glabratephrin glabratephrinol apollinine lanceolatin-A chemotaxonomy |
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