<p>Apigenin 7-<i>O</i>-sophoroside, chrysoeriol 7-<i>O</i>-sophoroside, and four new flavonoids <b>1–4</b> were observed in leaves of <i>Carduus nutans</i> ssp. <i>leiophyllus</i> (Petrovic) Stoj. &amp; Stef. (syn. <i>C. thoermeri</i> Weinm.). The structures of the new compounds were determined using UV and NMR spectroscopy and mass spectrometry as luteolin 7-<i>O</i>-[2′′-<i>O</i>-(4′′′-<i>O</i>-acetyl)-<i>β</i>-D-glucopyranosyl]-<i>β</i>-D-glucopyranoside (carduleioside A, <b>1</b>), chrysoeriol 7-<i>O</i>-[2′′-<i>O</i>-(4′′′-<i>O</i>-acetyl)-<i>β</i>-D-glucopyranosyl]-<i>β</i>-D-glucopyranoside (carduleioside B, <b>2</b>), apigenin 7-<i>O</i>-[2′′-<i>O</i>-(2′′′-<i>O</i>-acetyl)-<i>β</i>-D-glucopyranosyl]-<i>β</i>-D-glucopyranoside (carduleioside C, <b>3</b>), and apigenin 7-<i>O</i>-[2′′-<i>O</i>-(6′′′-<i>O</i>-acetyl)-<i>β</i>-D-glucopyranosyl]-<i>β</i>-D-glucopyranoside (carduleioside D, <b>4</b>). Compounds <b>1</b> and <b>2</b> inhibited the activity of monoamine oxidases A and B.</p>

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New Acetylated Flavone O-Sophorosides from Carduus nutans ssp. leiophyllus

  • D. N. Olennikov

摘要

Apigenin 7-O-sophoroside, chrysoeriol 7-O-sophoroside, and four new flavonoids 1–4 were observed in leaves of Carduus nutans ssp. leiophyllus (Petrovic) Stoj. & Stef. (syn. C. thoermeri Weinm.). The structures of the new compounds were determined using UV and NMR spectroscopy and mass spectrometry as luteolin 7-O-[2′′-O-(4′′′-O-acetyl)-β-D-glucopyranosyl]-β-D-glucopyranoside (carduleioside A, 1), chrysoeriol 7-O-[2′′-O-(4′′′-O-acetyl)-β-D-glucopyranosyl]-β-D-glucopyranoside (carduleioside B, 2), apigenin 7-O-[2′′-O-(2′′′-O-acetyl)-β-D-glucopyranosyl]-β-D-glucopyranoside (carduleioside C, 3), and apigenin 7-O-[2′′-O-(6′′′-O-acetyl)-β-D-glucopyranosyl]-β-D-glucopyranoside (carduleioside D, 4). Compounds 1 and 2 inhibited the activity of monoamine oxidases A and B.