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A new xanthone glycoside from Pyrrosia sheareri.

Natural product research (2018-11-30)
Kang He, Lin-Lin Fan, Tian-Tai Wu, Jiang Du
RÉSUMÉ

A new xanthone glycoside, 3,5,7,8-tetramethoxyxanthone-1-O-β-D-glucopyranoside (1), along with five known compounds, mangiferin (2), kaempferol (3), quercetin (4), chlorogenic acid (5) and diploptene (6), was isolated from the whole plants of Pyrrosia sheareri (Bak.) Ching. The structure of compound 1 was established on the basis of extensive spectroscopic analyses and chemical methods.