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<p>Studies of three species of <i>Dryas</i> (<i>D. sumneviczii</i> Serg., <i>D. octopetala</i> L., <i>D. oxyodonta</i> Juz., Rosaceae), growing in Baikal District led to the isolation of 19 flavonoids, including seven new flavonol glycosides. UV and NMR spectroscopic and mass spectrometric data characterized the new flavonoids as 8-methoxykaempferol 3-<i>O</i>-<i>α</i>-L-arabinopyranoside (dryadoside A, <b>1</b>), 8-methoxykaempferol 3-<i>O</i>-<i>α</i>-Larabinofuranoside (dryadoside B, <b>2</b>), 8-methoxyquercetin 3-<i>O</i>-<i>α</i>-L-arabinopyranoside (dryadoside C, <b>3</b>), 8-methoxykaempferol 3-<i>O</i>-(6′′-<i>O</i>-caffeyl)-<i>β</i>-D-galactopyranoside (dryadoside D, <b>5</b>), 8-methoxykaempferol 3-<i>O</i>-(2′′-<i>O</i>-caffeyl)-<i>α</i>-L-arabinofuranoside (dryadoside E, <b>6</b>), 8-methoxyquercetin 3-<i>O</i>-(6′′-<i>O</i>-caffeyl)-<i>β</i>-Dgalactopyranoside (dryadoside F, <b>7</b>), and 8-methoxyquercetin 3-<i>O</i>-(2′′-<i>O</i>-caffeyl)-<i>α</i>-L-arabinofuranoside (dryadoside G, <b>8</b>). Compounds <b>5–8</b> inhibited the activity of human pancreatic lipase.</p>

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New Flavonol Glycosides from the Genus Dryas

  • 期刊论文

  • 发表日期：

    2025年3月25日

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  • D. N. Olennikov,
  • N. I. Kashchenko,
  • V. M. Shishmarev

摘要

Studies of three species of Dryas (D. sumneviczii Serg., D. octopetala L., D. oxyodonta Juz., Rosaceae), growing in Baikal District led to the isolation of 19 flavonoids, including seven new flavonol glycosides. UV and NMR spectroscopic and mass spectrometric data characterized the new flavonoids as 8-methoxykaempferol 3-O-α-L-arabinopyranoside (dryadoside A, 1), 8-methoxykaempferol 3-O-α-Larabinofuranoside (dryadoside B, 2), 8-methoxyquercetin 3-O-α-L-arabinopyranoside (dryadoside C, 3), 8-methoxykaempferol 3-O-(6′′-O-caffeyl)-β-D-galactopyranoside (dryadoside D, 5), 8-methoxykaempferol 3-O-(2′′-O-caffeyl)-α-L-arabinofuranoside (dryadoside E, 6), 8-methoxyquercetin 3-O-(6′′-O-caffeyl)-β-Dgalactopyranoside (dryadoside F, 7), and 8-methoxyquercetin 3-O-(2′′-O-caffeyl)-α-L-arabinofuranoside (dryadoside G, 8). Compounds 5–8 inhibited the activity of human pancreatic lipase.