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The Cooccurrence of Different Biflavonoid Types in Pilotrichella flexilis

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The Cooccurrence of Different Biflavonoid Types in Pilotrichella flexilis

§

Elke Brinkmeier, Hans Geiger and Hans Dietmar Zinsmeister*

,§§

Fachrichtung Botanik, Universität des Saarlandes, Saarbrücken, BRD

§§Current address: Fasanenweg 2, 66133 Saarbrücken, Fax: 0681/812825 Dedicated to Professor Hans Becker on the occasion of his 60thbirthday

* Author for correspondence and reprint requests

Z. Naturforsch.55 c,866Ð869 (2000); received June 15/July 31, 2000 Pilotrichella flexilis, 2,3,2⬙,3⬙-Tetrahydrodicranolomin, Pilotrichellaaurone

From Pilotrichella flexilisvarious flavonoids have been isolated. This species contains in contrast toP. cuspidata not only 3⬘,3⵮-binaringenin and related compounds, but also some hitherto unknown biflavonoids based on eriodictyol and aureusidin. The structures of two new compounds are elucidated spectroscopically. Possible causes for the differences of the flavonoid patterns between the two species of the genus Pilotrichella are discussed.

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