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研究简报

矮陀陀中一个新的prieurianin型柠檬苦素类化合物

羊学荣a, 李健星a, 柏田良树b, 田中直伸b, 李典鹏c,*   

  1. a广西卫生职业技术学院药学院 广西南宁 530023;
    b德岛大学药学院 日本德岛 770-8505;
    c广西科学院 广西南宁 530200
  • 收稿日期:2026-04-16 修回日期:2026-06-25
  • 基金资助:
    广西歧黄学者资助项目 (GXQH202401)、广西重点研发计划项目(FN2600640439)、广西卫生职业技术学院高层次人才项目(GXWZY202501)、广西植物功能物质与资源持续利用重点实验室主任基金(ZRJJ2024-15).

A Novel Prieurianin-Type Limonoid from Munronia pinnata

Yang Xueronga, Li Jianxinga, Yoshiki Kashiwadab, Naonobu Tanakab, Li Dianpengc,*   

  1. aSchool of Pharmacy, Guangxi health science college, Nanning 530023, China;
    bGraduate School of Pharmaceutical Sciences, Tokushima University, Tokushima 770-8505, Japan;
    cGuangxi Academy of Sciences, Nanning 530007, China
  • Received:2026-04-16 Revised:2026-06-25
  • Contact: *E-mail: phytoldp@hotmail.com
  • Supported by:
    Guangxi Qi Huang Scholar Support Program (GXQH202401), Guangxi Key Research and Development Program ( FN2600640439), Guangxi Health Science College High-level Talents Project (GXWZY202501), and the Foundation of Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization (ZRJJ2024-15).

本研究旨在对传统药用植物矮陀陀(楝科)进行系统的化学成分研究,以期发现结构新颖的柠檬苦素类化合物,并评价其生物活性.采用色谱分离技术从其地上部分95%乙醇提取物中分离得到单体化合物;运用核磁共振(NMR)、高分辨质谱(HRESIMS)等波谱学方法并结合含时密度泛函理论计算电子圆二色谱(TDDFT-ECD)进行结构鉴定;通过CCK-8法和Griess法分别评价其体外细胞毒性与抗炎活性.结果分离并鉴定出一个新的柠檬苦素,命名为munropin K(1),其结构特征为具有prieurianin型骨架及一个独特的C-17位20,22-二羟基-21,23-二甲氧基-四氢呋喃环侧链.活性测试表明,该化合物在80 μmol/L浓度下对多种人源肿瘤细胞株(A549、HepG2、MCF-7、HCT116)及LPS诱导的RAW 264.7巨噬细胞炎症模型均未表现出显著活性.本研究丰富了对地黄连属植物化学多样性的认识,为基于该新型骨架的后续结构修饰与活性探索提供了化合物基础.

关键词: 矮陀陀, 楝科, 柠檬苦素, 结构鉴定, 抗炎活性, 细胞毒性

This study aimed to investigate the chemical components of the traditional medicinal plant Munronia pinnata (Meliaceae). We sought to discover new limonoids and evaluate their biological activities. Compounds were isolated from the plant's aerial parts using 95% ethanol and chromatographic techniques. Their structures were identified by NMR and HRESIMS analysis, along with time-dependent density functional theory-electronic circular dichroism (TDDFT-ECD) computations. Cytotoxicity was tested with the CCK-8 assay, and anti-inflammatory activity was measured using the Griess method. A new limonoid, named munropin K (1), was obtained. Its structure features a prieurianin-type skeleton with a unique side chain at C-17. This side chain is a 20,22-dihydroxy-21,23-dimethoxytetrahydrofuran. At 80 µM, the compound showed no significant activity against several human cancer cell lines. These cell lines included A549, HepG2, MCF-7, and HCT116. It also did not show activity in an LPS-induced RAW 264.7 macrophage inflammation model. The research expands the known chemical diversity of the Munronia genus. It provides a chemical basis for future studies on structure modification and activity exploration of this new skeleton.

Key words: Munronia pinnata, Meliaceae, limonoid, structural elucidation, anti-inflammatory activity, cytotoxicity