Two new γ-pyrone glucosides from Paeonia albiflora
2016
Two new γ-pyrone glucosides, along with three known compounds, were isolated from the roots of Paeonia albiflora, and their structures were elucidated by spectral experiments, chemical analysis, and comparison with literature data. The structures of the new compounds were established as 2-(hydroxymethyl)-4-oxo-4H-pyran-3-yl-6-O-α-L-rhamnopyranosyl-β-D-glucopyranoside (1), and 2-(hydroxymethyl)-4-oxo-4H-pyran-3-yl-6-O-galloyl-β-D-glucopyranoside (2). The inhibitory activity on the release of TNF-α of compounds 1–5 was evaluated in vitro. This is the first report of the presence of γ-pyrone glucoside in P. albiflora.
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