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Flavone 8-C-Glycosides from Haberlea rhodopensisFriv. (Gesneriaceae)

✍ Scribed by Samad N. Ebrahimi; Frank Gafner; Giorgio Dell'Acqua; Kuno Schweikert; Matthias Hamburger

Publisher
John Wiley and Sons
Year
2011
Tongue
German
Weight
181 KB
Volume
94
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Phytochemical profiling of a MeOH extract from Haberlea rhodopensis by a combination of liquid/liquid extraction, and preparative and semi‐preparative HPLC afforded three new flavone C‐glycosides, hispidulin‐8‐C‐(2″‐O‐syringoyl)‐β‐glucopyranoside (3), hispidulin 8‐C‐(6‐O‐acetyl‐β‐glucopyranoside) (4), and hispidulin 8‐C‐(6‐O‐acetyl‐2‐O‐syringoyl‐β‐glucopyranoside) (5), along with two known phenolic glycosides, myconoside (1) and paucifloside (2). The structures were established by extensive spectroscopic analyses including 1D‐ and 2D‐NMR (COSY, HSQC, and HMBC), and HR‐ESI‐TOF‐MS, and by comparison with published data.

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