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Lignans in resin of Araucaria angustifolia by gas chromatography/mass spectrometry
Author(s) -
Yamamoto Shuichi,
Otto Angelika,
Simoneit Bernd R. T.
Publication year - 2004
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.726
Subject(s) - chemistry , mass spectrometry , chromatography , gas chromatography , gas chromatography–mass spectrometry , araucaria , forestry , geography
Abstract Total extract of resin from Araucaria angustifolia was analyzed by gas chromatography/mass spectrometry and 32 lignans were identified. Lignan acetates are present in the resin and consist of four secoisolariciresinol acetates, six lariciresinol acetates, two 7′‐hydroxylariciresinol acetates and an isolariciresinol acetate, which have hitherto not been reported in the plant kingdom. Shonanin and 7′‐hydroxylariciresinol type lignans are also present in A. angustifolia resin. Lignans containing syringyl moieties, characteristic for angiosperms, occur in the resin and consist of 5‐methoxylariciresinol‐9‐acetate, 5′‐methoxylariciresinol‐9‐acetate, 5‐methoxypinoresinol dimethyl ether and 5‐methoxypinoresinol. This is noteworthy because syringyl moieties have only been reported for Thuja species (Cupressaceae) among the gymnosperms. The mass spectra of the various lignan trimethylsilyl derivatives are discussed with the interpretations of the fragmentation patterns. Copyright © 2004 John Wiley & Sons, Ltd.