A new prenylated xanthone from Garcinia xipshuanbannaensis Y.H. Li.
A new prenylated xanthone, named bannaxanthone I, has been isolated from the leaves of Garcinia xipshuanbannaensis, along with five other known compounds, bannaxanthone E, mangostinone, tovophyllin A, garcinone E, and γ-mangostin. 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).
Na
Zhi
Z
Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan Province 666303, P.R. China. nazhi@xtbg.org.cn
Xu
You-Kai
YK
D029760:Garcinia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D054876:Prenylation; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
D044004:Xanthones; C009689:xanthone