Identification of new lignans in Norway spruce knotwood extracts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F12%3A43884593" target="_blank" >RIV/60076658:12220/12:43884593 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Identification of new lignans in Norway spruce knotwood extracts

Popis výsledku v původním jazyce

In a hydrophilic extract of Norway spruce knotwood, the dominating lignan, 7-hydroxymatairesinol, was partially removed by precipitation, and the resulting mixture was fractionated by flash chromatography and preparative high-performance liquid chromatography (HPLC). In the HPLC fractions, 7 S and 7R-todolactol A, 7'-hydroxylariciresinol, and two stereoisomers of 9'-hydroxylariciresinol were identified by gas chromatography-mass spectrometry (GC-MS) analyses, and their structures were confirmed by nuclear magnetic resonance spectroscopy. The 9'-hydroxylariciresinols were suggested to have the 7S,8R,8'R,9'R and 7R,8R,8'R,9'R configurations, and (-)-7'-hydroxylariciresinol 7S*,7'R*,8R*,8'S*, which indicates a configuration of this structure that has notbeen reported previously. 7S- and 7R-isoliovil were identified by comparison with previously published GC-MS data, and 7'-oxolariciresinol was tentatively identified on the basis of its mass spectrum. Of these lignans, only 7'-hydroxylari

Název v anglickém jazyce

Identification of new lignans in Norway spruce knotwood extracts

Popis výsledku anglicky

In a hydrophilic extract of Norway spruce knotwood, the dominating lignan, 7-hydroxymatairesinol, was partially removed by precipitation, and the resulting mixture was fractionated by flash chromatography and preparative high-performance liquid chromatography (HPLC). In the HPLC fractions, 7 S and 7R-todolactol A, 7'-hydroxylariciresinol, and two stereoisomers of 9'-hydroxylariciresinol were identified by gas chromatography-mass spectrometry (GC-MS) analyses, and their structures were confirmed by nuclear magnetic resonance spectroscopy. The 9'-hydroxylariciresinols were suggested to have the 7S,8R,8'R,9'R and 7R,8R,8'R,9'R configurations, and (-)-7'-hydroxylariciresinol 7S*,7'R*,8R*,8'S*, which indicates a configuration of this structure that has notbeen reported previously. 7S- and 7R-isoliovil were identified by comparison with previously published GC-MS data, and 7'-oxolariciresinol was tentatively identified on the basis of its mass spectrum. Of these lignans, only 7'-hydroxylari

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

—

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Holzforschung

ISSN

0018-3830

e-ISSN

—

Svazek periodika

66

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

553-567

Kód UT WoS článku

000307218900001

EID výsledku v databázi Scopus

—