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<p>Phenylethanoid glycosides <b>1</b> and <b>2</b> containing a malonic acid moiety on glucopyranose C-2′ were isolated from the herb of <i>Leonurus deminutus</i> V. I. Krecz. (Lamiaceae). The compounds were 1′-<i>O</i>-(3,4-dihydroxyphenyl)-ethyl-2′-<i>O</i>-malonyl-3′-<i>O</i>-<i>α</i>-L-rhamnopyranosyl-4′-<i>O</i>-caffeyl <i>β</i>-D-glucopyranoside (deminutoside A, <b>1</b>) and 1′-<i>O</i>-(3,4-dihydroxyphenyl)-ethyl-2′-<i>O</i>-malonyl-3′-<i>O</i>-(2′′-<i>O</i>-<i>α</i>-L-arabinopyranosyl)-<i>α</i>-L-rhamnopyranosyl-4′-<i>O</i>-caffeyl <i>β</i>-D-glucopyranoside (deminutoside B, <b>2</b>) according to UV and NMR spectroscopic and mass spectrometric data. Both compounds have been detected in 11 other <i>Leonurus</i> species in the subgenera Cardiaca and Cardiochilum. Studies of the biological activity showed that <b>1</b> and <b>2</b> possessed antiradical activity.</p>

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Malonates of Phenylethanoid Glycosides from the Genus Leonurus

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • D. N. Olennikov,
  • N. I. Kashchenko

摘要

Phenylethanoid glycosides 1 and 2 containing a malonic acid moiety on glucopyranose C-2′ were isolated from the herb of Leonurus deminutus V. I. Krecz. (Lamiaceae). The compounds were 1′-O-(3,4-dihydroxyphenyl)-ethyl-2′-O-malonyl-3′-O-α-L-rhamnopyranosyl-4′-O-caffeyl β-D-glucopyranoside (deminutoside A, 1) and 1′-O-(3,4-dihydroxyphenyl)-ethyl-2′-O-malonyl-3′-O-(2′′-O-α-L-arabinopyranosyl)-α-L-rhamnopyranosyl-4′-O-caffeyl β-D-glucopyranoside (deminutoside B, 2) according to UV and NMR spectroscopic and mass spectrometric data. Both compounds have been detected in 11 other Leonurus species in the subgenera Cardiaca and Cardiochilum. Studies of the biological activity showed that 1 and 2 possessed antiradical activity.