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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