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<p>A new alkaloid, (<i>S</i>)-1-methyl-2-nitroso-1,2,3,4-tetrahydroisoquinoline-6,7-diol (<b>1</b>), named oleraisoquinoline A, and 9 known compounds, iseluxine (<b>2</b>), oleracrylimide E (<b>3</b>), oleracrylimide A (<b>4</b>), oleracrylimide B (<b>5</b>), chrysoeriol (<b>6</b>), 2-(2-hydroxyphenyl)-5,7-dimethoxychroman-4-one (<b>7</b>), portulacanone C (<b>8</b>), portulacanone D (<b>9</b>), and 2,2′-dihydroxy-4′,6′-dimethoxychalcone (<b>10</b>), were obtained from <i>P. oleracea</i>, in which, compounds <b>6</b>, <b>7</b> were isolated from the plant for the first time. The structure of compound <b>1</b>, identified by UHPLC-ESI-Q-TOF/MS, 1D, 2D NMR, and CD, presented remarkable anti-inflammatory and antioxidant activities, as also did compound <b>2</b>, while <b>6</b> presented antioxidant activities.</p>

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A New Alkaloid from Portulaca oleracea and Its Anti-Inflammatory and Antioxidant Activities

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • Yingdai Zhao,
  • Yang Du,
  • Hongzhe Zhang,
  • Aijing Leng,
  • Xixiang Ying

摘要

A new alkaloid, (S)-1-methyl-2-nitroso-1,2,3,4-tetrahydroisoquinoline-6,7-diol (1), named oleraisoquinoline A, and 9 known compounds, iseluxine (2), oleracrylimide E (3), oleracrylimide A (4), oleracrylimide B (5), chrysoeriol (6), 2-(2-hydroxyphenyl)-5,7-dimethoxychroman-4-one (7), portulacanone C (8), portulacanone D (9), and 2,2′-dihydroxy-4′,6′-dimethoxychalcone (10), were obtained from P. oleracea, in which, compounds 6, 7 were isolated from the plant for the first time. The structure of compound 1, identified by UHPLC-ESI-Q-TOF/MS, 1D, 2D NMR, and CD, presented remarkable anti-inflammatory and antioxidant activities, as also did compound 2, while 6 presented antioxidant activities.