Complete assignments of 1H and 13C NMR data of three new dihydrophenanthrofurans from Pleione yunnanensis

Three new dihydrophenanthrofurans, pleionesins A–C (1–3), together with two known dihydrophenanthrenes (4–5) were isolated from the tubers of Pleione yunnanensis (Rolfe). The complete 1H and 13C NMR spectra assignments of these compounds were carried out using 1D and 2D NMR experiments (1H, 13C, selective 1D NOE, HSQC and HMBC). Copyright © 2010 John Wiley & Sons, Ltd.

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