Five new compounds, matteuorien, matteuorienin, and matteuorienate A (7), B (8), and C (9) were isolated together with five known compounds from the MeOH extract of the rhizome of Matteuccia orientalis Trev. The structures of these compounds were determined by the use of spectroscopic methods
Matteuorienate A and B, two new C-methyl flavanone derivatives, were isolated from the Matteuccia orientalis (Hook.) Trev. (Aspidiaceae), and their structures were determined by the use of spectroscopic methods including 2D-NMR (1H-1H COSY, 1H-13C COSY and 1H-13C long-range COSY) experiments and
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