New Dihydroflavonols from Enceliopsis and Geraea

Peter Proksch; Matthias Breuer; Aristotelis Mitsakos; Herbert Budzikiewicz

doi:10.1055/s-2006-962731

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Planta Med 1987; 53(4): 334-337
DOI: 10.1055/s-2006-962731

Full Papers

New Dihydroflavonols from Enceliopsis and Geraea

Peter Proksch¹ , Matthias Breuer² , Aristotelis Mitsakos³ , Herbert Budzikiewicz²

¹Institut für Pharmazeutische Biologie, TU Braunschweig, Mendelssohnstraße 1, D-3300 Braunschweig, Federal Republic of Germany.
²Institut für Organische Chemie, Universität Köln, Greinstraße 4, D-5000 Köln 41, Federal Republic of Germany.
³Botanisches Institut, Universität Köln, Gyrhofstraße 15, D-5000 Köln 41, Federal Republic of Germany.

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Publication History

1986

Publication Date:
24 January 2007 (online)

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Abstract

Phytochemical analysis of leaves from Enceliopsis nudicaulis, E. nudicaulis var. corrugata, and Geraea canescens afforded numerous methylated flavonoids present as resin constituents as well as benzofurans and related compounds extracted from roots. Five new dihydroflavonols present on the leaf surfaces were identified based on their spectral data and on those of the corresponding flavonols obtained by oxidation with NaHSO₃.

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