波谱学杂志 ›› 2012, Vol. 29 ›› Issue (1): 119-127.

• 研究论文 • 上一篇    下一篇

盐酸莫西沙星对映体及混合体的核磁共振研究

杨秋青1*,刘博谦2,韩康1   

  1. 1. 河北师范大学 实验中心,河北 石家庄 050016;
    2.  中国农业大学 化学系,北京 100094
  • 收稿日期:2010-11-30 修回日期:2011-05-04 出版日期:2012-03-05 发布日期:2012-03-05

Pure and Mixed Enantiomer of Moxifloxacin Hydrochloride Studied by NMR Spectroscopy

 YANG Qiu-Qing1*, LIU Bo-Qian2, HAN Kang1   

  1. 1. Experimental Center, Hebei Normal University, Shijiazhuang 050016, China;
    2. Department of Chemistry, China Agricultural University, Beijing 100094, China
  • Received:2010-11-30 Revised:2011-05-04 Online:2012-03-05 Published:2012-03-05

摘要:

利用核磁共振波谱1H、13C NMR、DEPT、COSY、HSQC、HMBC、2D NOESY谱及19F-13C的偶合裂分,对盐酸莫西沙星对映体纯品(RR或SS)以及它们的混合体(RR/SS)结构进行分析和研究,详细解析了该分子结构的1H和13C谱图归属,19F-13C间的偶合不仅体现在沙星母核中还表现在盐酸莫西沙星中的五元杂环中,且该五元杂环的4JFC大于盐酸莫西沙星中的六元环上3JFC4JFC,该文总结了盐酸莫西沙星对映体的波谱特征,确定混合体与纯品的区别方法.

关键词: 核磁共振(NMR), 盐酸莫西沙星, 对映体,  , 区别方法

Abstract:

The structures of pure and mixed enantiomer of moxifloxacin hydrochloride were elucidated by NMR. The chemical shift of the spectral peaks were assigned using 1H and 13C NMR, COSY, HSQC, HMBC and 2D NOESY techniques, as well as 19F-13C coupled splitting. It was found that 19F-13C coupling exists not only in the sixmembered ring, but also in the fivemembered heterocyclic ring, and that 4JFC in the five-membered heterocyclic ring is larger than 3JFC and 4JFC in the sixmembered ring. The spectral characteristics of the pure and mixed enantiomer of moxifloxacin hydrochloride were summarized. A method was proposed to differentiate the pure and mixed enantiomer of moxifloxacin hydrochloride.

Key words: NMR,  moxifloxacin hydrochloride, enantiomer, identification method

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