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Characterization of phenolic compounds from inner bark of Betula pendula

✍ Scribed by Liimatainen, Jaana; Karonen, Maarit; Sinkkonen, Jari; Helander, Marjo; Salminen, Juha-Pekka

Book ID
120531718
Publisher
Walter de Gruyter GmbH & Co. KG
Year
2012
Tongue
German
Weight
918 KB
Volume
66
Category
Article
ISSN
0018-3830

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✦ Synopsis

Abstract

A method has been developed for the characterization of biologically active silver birch (Betula pendula) inner bark phenolics based on high-performance liquid chromatography/diode array detector (HPLC-DAD)/electrospray ionization-mass spectrometry (ESI-MS). It was demonstrated that the inner bark contains high amounts of flavonoids, arylbutanoids, diarylheptanoids, simple phenolic compounds, phenolic acids, lignans, and procyanidins. Altogether, 30 individual compounds were characterized based on their ultraviolet (UV) and MS data. Structures of 22 compounds were confirmed by nuclear magnetic resonance (NMR) spectroscopy. In addition to previously reported phenolic compounds, 12 compounds were identified in silver birch inner bark for the first time; two of them are novel compounds: 3-β-glucopyranosyloxy-2-hydroxy-1-(4-hydroxy-3-methoxy-phenyl)-propan-1-one and 1,7-bis-(4-hydroxyphenyl)-3-heptanol 3-O-β-ap-iofuranosyl-(1→2)-β-glucopyranoside.

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Two new phenylbutanoids from inner bark
Two new phenylbutanoids from inner bark of Betula pendula
✍ Jaana Liimatainen; Jari Sinkkonen; Maarit Karonen; Kalevi Pihlaja 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 102 KB

## Abstract Two phenylbutanoids, 7‐{3__R__‐[(4‐hydroxyphenyl)butyl] β‐glucopyranosid‐__O__‐6‐yl} 4‐__O__‐β‐glucopyranosylvanillin and 3‐β‐glucopyranosyloxy‐1‐(4‐hydroxyphenyl)‐butanone were isolated from an aqueous methanol extract of the inner bark of __Betula pendula__. Their structures were dete