Thirteen aromatic compounds, having C6-C4, C6-C8-C6 or C6-C10 carbon skeletons, were isolated from the rhizomes of a Thai medicinal plant, Zingiber cassumunar. Eight compounds were new among these, and their structures were elucidated as 6, 7, 8, 9, 10, 11, 12, and 13 by chemical and spectral methods. The structures were confirmed by 13C-NMR spectroscopy.
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Kuroyanagi et al. (1980) studied this question.
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