New Coumaronochromones from White Lupin,Lupinus albus L. (Leguminosae) |
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| Authors: | Satoshi Tahara John L Ingham Junya Mizutani |
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| Institution: | 1. Department of Agricultural Chemistry, Faculty of Agriculture, Hokkaido University, Kita-ku, Sapporo 060, Japan;2. Phytochemical Unit, Department of Botany, University of Reading, Whiteknights, Reading RG6 2AS, England |
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| Abstract: | A further investigation of the isoflavonoid constituents occurring in roots of the white lupin (Lupinus albus L. cv. Kievskij Mutant) has yielded five new coumaronochromones named lupinalbin A (la), B (2a), C (3), D (4) and E (5). These isoflavonoids were identified by physicochemical methods involving the use of biogenetically related 2′-hydroxyisoflavones as reference compounds. The presence of the rare dihydrofurano-isoflavone, erythrinin C (16), in white lupin roots has also been established. |
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