Abstract
A new prenylated xanthone, named bannaxanthone I (1), has been isolated from the leaves of Garcinia xipshuanbannaensis, along with five other known compounds, bannaxanthone E (2), mangostinone (3), tovophyllin A (4), garcinone E (5), and γ-mangostin (6). The structure of the new compound was elucidated on the basis of high-resolution fast atom bombardment mass spectra (HRFABMS), 1D-and 2D-NMR experiments, including heteronuclear multiple bond connectivity (HMBC), heteronuclear single quantum coherence (HSQC) and 1H–1H-COSY (correlated spectroscopy, COSY).
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