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New Galloylated Flavonoid Glycosides from Geranium stepporumDavis

✍ Scribed by Didem Şöhretoğlu; Mahmut Koray Sakar; Olov Sterner

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
156 KB
Volume
92
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

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Two new galloylated flavonoid glycosides, quercetin‐3‐O‐(3″‐O‐galloyl)‐β‐glucopyranoside (1) and quercetin‐3‐O‐(3″‐O‐galloyl)‐β‐galactopyranoside (2) were isolated from the aerial parts of Geranium stepporum along with the four known flavonoids, quercetin 3‐O‐β‐glucopyranoside (3), quercetin 3‐O‐β‐galactopyranoside (4), quercetin 3‐O‐(6″‐O‐galloyl)‐β‐glucopyranoside (5) and quercetin 3‐O‐(6″‐O‐galloyl)‐β‐galactopyranoside (6). The structure elucidation of the isolated compounds was accomplished by spectroscopic methods (UV, 1D‐ and 2D‐NMR, and ESI‐TOF‐MS).

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