Xanthones from the bark of Garcinia pedunculata

[Display omitted] ► Chemical constituents of the bark of Garcinia pedunculata were isolated. ► Structure elucidation led to the characterization of eight compounds. ► Three new xanthones, named pedunxanthones A–C were characterized. Three new xanthones, pedunxanthones A–C (1–3), together with five k...

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Published in:Phytochemistry letters 2012-12, Vol.5 (4), p.766-769
Main Authors: Vo, Hau T., Nguyen, Ngoc-Thao T., Maas, Gerhard, Werz, Udo R., Pham, Hung D., Nguyen, Lien-Hoa D.
Format: Article
Language:English
Subjects:
bark
Garcinia
Garcinia pedunculata
Guttiferae
Isolation
nuclear magnetic resonance spectroscopy
oleanolic acid
Pedunxanthones A–C
Structure elucidation
Xanthones
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Summary:[Display omitted] ► Chemical constituents of the bark of Garcinia pedunculata were isolated. ► Structure elucidation led to the characterization of eight compounds. ► Three new xanthones, named pedunxanthones A–C were characterized. Three new xanthones, pedunxanthones A–C (1–3), together with five known compounds, 1,5-dihydroxy-3-methoxy-6′,6′-dimethyl-2H-pyrano(2′,3′:6,7)-4-(3-methylbut-2-enyl)xanthone, 1,5-dihydroxy-3-methoxy-4-(3-methylbut-2-enyl)xanthone, dulxanthone A, garbogiol and oleanolic acid, were obtained from a petroleum ether extract of the bark of Garcinia pedunculata. The new structures were elucidated using spectroscopic methods, mainly 1-D and 2-D NMR.
ISSN:1874-3900
1876-7486
DOI:10.1016/j.phytol.2012.08.009