六角化物A-F:从Caralluma hexagona分离出来的孕妇糖化物
Osama G Mohamed1, Akram A Shalabi2, Ali M El Halawany2
1Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt; Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA.
Phytochemistry
|November 2, 2023
概括
研究人员从野生植物Caralluma hexagona中发现了四种新的乙基化孕妇糖化物,六角化物AD. 进一步的分析揭示了异构化合物,六角化物E和F,具有独特的结构特征和形状灵活性.
科学领域:
- 植物化学 植物化学
- 自然产品化学 自然产品化学
- 有机化学 有机化学
背景情况:
- 卡拉卢马六角 (Caralluma hexagona) 是一种原产于也门的野生植物物种.
- 孕妇糖化物是一种具有多种生物活性的自然产品类别.
- 之前对Caralluma物种的植物化学研究已经确定了各种生物活性化合物.
研究的目的:
- 从Caralluma hexagona中分离和鉴定新型的乙化孕妇糖化物.
- 用先进的光谱技术阐明分离化合物的化学结构.
- 研究同位素代谢物质的结构特征和构造性行为.
主要方法:
- 植物化学研究涉及提取和隔离技术.
- 使用1D/2D核磁共振 (NMR) 光谱学阐明结构.
- 高分辨率电子喷雾电离质谱学 (HRESIMS) 分析.
- 高性能液体染色学 (HPLC) 用于分离和形状研究.
主要成果:
- 隔离和表征四种新的乙化前糖化物:六角化物 A-D.
- 鉴定两组异构混合物,六角化物E和F,每组包含三个可相互转换的化合物.
- 结构特征包括6'-O-二-1'-O-β-葡萄糖在C-20的糖和C-3的不同糖链.
- 代谢物E和F表现出由于在葡萄糖残留物中的醇迁移而引起的构造性异构.
结论:
- 卡拉卢马六 (Caralluma hexagona) 是结构多样化的酸孕妇甘油酸的丰富来源.
- 这项研究扩大了已知的pregnane glycosides的化学多样性.
- 在六角化物E和F中观察到的构造性同质性提供了对它们的化学行为和潜在的生物学影响的见解.
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