Lignans of Araucaria angustifolia and 13C NMR analysis of some phenyltetralin lignans
✍ Scribed by Sebastiãko F. Fonseca; Lawrence T. Nielsen; Edmundo A. Rúveda
- Book ID
- 103337168
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 548 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0031-9422
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## 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
## Abstract A detailed NMR analysis of 3′,4‐__O__‐dimethylcedrusin and 4‐__O__‐methylcedrusin using two‐dimensional COSY, HETCOR and long‐range HETCOR techniques showed that some ^13^C NMR spectral assignments reported previously for related dihydrobenzofuran lignans such as dihydrodehydrodiconifer