Abstract
The leaves of Garcinia epunctata Stapf have furnished two new phenolic glucosides, epunctosides A and B, along with 13 known secondary metabolites identified as lanceoloside A, betulinic acid, lupeol, stigmasterol, β-sitosterol, β-sitosterol-3-O-β-d-glucopyranoside, stigmasterol-3-O-β-d-glucopyranoside, luteolin-7-O-glucoside, quercitin-7-O-glucoside, amentoflavone, robustaflavone, 4′-O-methyl-amentoflavone and 4′-O-methyl-robustaflavone. All structures were established from chemical and spectroscopic evidence including 1D and 2D NMR data as well as by comparing the obtained spectroscopic data with literature. This is the first report of the presence of phenolic glucosides in the genus Garcinia.
Acknowledgments
We thank Victor Nana of the National Herbarium Yaounde for the identification and the harvest of the plant material, Professor Bernard Bodo and M. Alain Blond of the Laboratory of Natural Products, Museum of Natural History, Paris, France, for spectra and the University of Yaounde 1 grants committee for financial assistance.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/znc-2018-0217).
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