从烟草中分离,识别和结构性表征糖异构体
Junchen Zhu1, Kailong Yuan2, Yue Xie1
1Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China.
Journal of separation science
|October 6, 2023
概括
分析了主要的烟草风味前体糖 (SEs). 研究人员确定了8种SE异构体,其中包括4种新型结构,提高了对烟草的理解.
科学领域:
- 分析化学 分析化学
- 自然产品化学 自然产品化学
- 烟草科学 烟草科学
背景情况:
- 糖精 (SEs) 是重要的烟草烟雾风味前体,并影响烟草的功能.
- 由于SE的结构复杂性,在烟草矩阵中对其进行分离和分析具有重大挑战.
- 在烟草中,大量的SE结构仍然未被确定.
研究的目的:
- 开发和应用先进的分析技术,以全面分离和阐明烟草中糖的结构.
- 识别新型的糖精子结构,并扩大这些化合物在不同烟草类型中已知的多样性.
- 为未来研究SE合成,新陈代谢和风味贡献提供基础的理解.
主要方法:
- 烟草部分 (东方和烟雾固化) 的预处理,以丰富糖.
- 液体染色学-并联质谱学 (LC-MSn) 用于区分SE类型 (I和II类型),其中II类型是新的特征.
- 准备性高性能液态色谱 (HPLC) 与蒸发光散射探测器相结合,用于净化主要的SE组.
- 核磁共振 (NMR) 光谱 (1H,13C,COSY,HSQC,HMBC) 用于详细的结构特征.
主要成果:
- 使用LC-MSn.在烟草中鉴定出两种不同类型的糖精 (I型和II型).
- 精制和描述了五个主要的SE组.
- 提出了八种SE异构体的结构,其中四种在烟草中新发现.
- 这项研究成功地描述了新的SE结构,大大促进了它们在烟草中的识别.
结论:
- 这项研究成功阐明了东方和烟草中8种SE异构体的结构,其中包括4种新化合物.
- 在分析复杂的SE混合物时,LC-MSn和NMR光谱的联合应用被证明是有效的.
- 这些发现为烟草中SE的结构多样性提供了有价值的见解,有助于未来研究它们的作用和合成.
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