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<p>The new C<sub>19</sub>-diterpenoid alkaloid 19-oxo-14-acetylbrowniine (<b>1</b>) and the alkaloid shawurensine for the first time were isolated from the plant <i>Delphinium oreophilum</i> collected in Jizzakh Region, Uzbekistan. The structure of the new alkaloid was elucidated using IR, 1D, and 2D NMR spectroscopy and high-resolution mass spectrometry. Compound <b>1</b> demonstrated high (78.6%) antioxidant activity for neutralization of DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals vs. ascorbic acid as a positive control.</p>

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New C19-Diterpenoid Alkaloid 19-Oxo-14-Acetylbrowniine with Antioxidant Activity from Delphinium oreophilum

  • 期刊论文

  • 发表日期：

    2026年3月1日

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  • Kh. I. Akhunova,
  • Kh. M. Bobakulov,
  • A. I. Kulonov,
  • Sh. V. Abdullaev,
  • S. F. Aripova

摘要

The new C19-diterpenoid alkaloid 19-oxo-14-acetylbrowniine (1) and the alkaloid shawurensine for the first time were isolated from the plant Delphinium oreophilum collected in Jizzakh Region, Uzbekistan. The structure of the new alkaloid was elucidated using IR, 1D, and 2D NMR spectroscopy and high-resolution mass spectrometry. Compound 1 demonstrated high (78.6%) antioxidant activity for neutralization of DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals vs. ascorbic acid as a positive control.