波谱学杂志 ›› 2007, Vol. 24 ›› Issue (2): 147-153.

• 研究论文 • 上一篇    下一篇

双分子缬氨酸氢膦烷构型的确定

曹书霞;刘金明;郭艳春;方芳;廖新成;赵玉芬   

  1. 1.河南省化学生物与有机化学重点实验室,郑州大学 化学系,河南 郑州,450052; 
    2.生命有机磷化学与化学生物学教育部重点实验室,清华大学 化学系,北京 100084
  • 收稿日期:2006-06-28 修回日期:2006-08-07 出版日期:2007-06-05 发布日期:2009-12-05
  • 通讯作者: 曹书霞

Configuration Determination of Bimolecular L-Valine Hydridophosphorane

CAO Shu-xia;LIU Jin-ming;GUO Yan-chun;FANG Fang   

  1. 1.The Key Laboratory of Chemical Biology and Organic Chemistry, Department of Chemistry, Zhengzhou University, Zhengzhou 450052, China; 2.Department of Chemistry School of Life Sciences and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2006-06-28 Revised:2006-08-07 Online:2007-06-05 Published:2009-12-05
  • Contact: Cao Shu-xia

摘要: 以缬氨酸为原料,和三氯化磷反应合成了双分子缬氨酸氢膦烷.采用1H NMR、13C NMR、1H-1H COSY、DEPT和HSQC等技术确证了目标化合物的结构;对其1H NMR和13C NMR信号进行了归属,同时利用IR和ESI-MS验证了其结构.31P NMR显示所得产物为缬氨酸氢膦烷的一对非对映异构体,利用NOESY技术对分离得到的其中一种异构体绝对构型进行了确定,该结果得到了X-射线单晶衍射的验证.

关键词: NMR, 归属, 绝对构型, 2D NMR, 缬氨酸氢膦烷

Abstract: Bimolecular L-valine hydridophosphorane was synthesized by the reaction between L-valine and phosphorus trichloride in tetrahydrofuran (THF). Complete assignment of the 13C NMR chemical shifts of the compound was obtained by 2D NMR techniques, including 1H-1H COSY, DEPT and HSQC. Based on the results of NMR characterization, the structure of L-valine hydridophosphorane was elucidated. The 31P NMR spectrum of the compound showed two separated peaks at δ -64.66 and δ -67.81, suggesting that it is comprised of a pair of diastereomers. The configuration of one of the diastereomers was determined by NOESY, and further confirmed by X-ray crystallography.

Key words: NMR, assignments, configuration, valine hydridophosphorane