Rezende KR, Kato MJ. Dibenzylbutane and aryltetralone lignans from seeds of Virola sebifera.
PHYTOCHEMISTRY 2002;
61:427-432. [PMID:
12377238 DOI:
10.1016/s0031-9422(02)00242-x]
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Abstract
Two lignans rel-(8R, 8'R)-3,4:3',4'-bis-(methylenedioxy)-7.7'-dioxo-lignan and (7'R,8'S,8S)-2'-hydroxy-3,4:4',5'-bis-(methylenedioxy)-7-oxo-2,7'-cyclolignan were isolated from seeds of Virola sebifera. The cyclolignan showed two atropisomers as determined by 1H NMR spectroscopy at low temperature.
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