从Silene vulgaris中识别酸性三烯酸盐素,使用基于甲基化的隔离和LC-MS分析策略
Takashi Kikuchi1, Danyang Liu1, Kouharu Otsuki1
1Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
Chemical & pharmaceutical bulletin
|March 9, 2025
概括
研究人员开发了一种新方法,用于识别Silene vulgaris植物中的三类沙素. 该策略使用甲基化和LC-MS分析,以更好地了解沙素的分布和结构.
科学领域:
- 自然产品化学 自然产品化学
- 植物化学 植物化学
- 分析化学 分析化学
背景情况:
- 属植物 (Caryophyllaceae家族) 富含三类桑素.
- 这些氨酸含有葡萄糖酸,这对染色学分离构成了挑战.
- 了解Silene vulgaris中的氨酸分布对于植物化学研究至关重要.
研究的目的:
- 制定一项策略,以澄清三烯酸盐在整个Silene vulgaris植物中的分布.
- 隔离和表征甲基化沙因,用于LC-MS分析中的标准.
- 为了阐明特征性MS和MS/MS碎片化模式的这些沙素.
主要方法:
- 从Silene vulgaris全植物甲醇提取物中的n-butanol分数中提取三烯酸盐素.
- 在葡萄糖酸中用trimethylsilyl diazomethane甲基化碳基.
- 通过高性能液体染色学 (HPLC) 来分离五种甲基化三烯酸盐.
- 使用核磁共振 (NMR) 和质谱法 (MS) 确定结构.
- 使用LC-MS和MS/MS分析碎片化模式.
主要成果:
- 五种甲基化三烯酸盐 (7a, 13a, 14a, 16a, 17a) 已成功分离并从结构上阐明.
- 标志性MS和MS/MS碎片化模式被确定为这些沙因.
- 这项研究估计了22种三烯酸盐的化学结构,基于碎片化模式.
结论:
- 开发的甲基化和LC-MS/MS策略有效地澄清了Silene vulgaris中的三烯酸盐的分布.
- 这种方法提供了宝贵的洞察力,了解素的结构多样性和碎片化行为.
- 这些发现有助于对Silene物种的植物化学理解.
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