高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (10): 1732.

• 研究快报 • 上一篇    下一篇

2-甲基取代对吡咯啉-N-氧化物类自旋捕捉剂与超氧阴离子自由基加合物稳定性的影响

徐英凯, 孙健, 刘科, 陈中伟, 张兴康, 刘扬   

  1. 中国科学院化学研究所分子科学中心分子动态和稳态结构国家重点实验室, 北京 100080
  • 收稿日期:2001-07-03 出版日期:2001-10-24 发布日期:2001-10-24
  • 通讯作者: 刘 扬(1958年出生),男,博士,研究员,博士生导师,主要从事生物电子转移过程中的自由基研究及其超分子化学模拟.
  • 基金资助:

    国家重点基础规划项目(批准号:G1998010100);国家自然科学基金(批准号:39890390;39870208)资助

Effect of2-Methyl Substitution on the Stability of Spin Adducts Composed of Pyrroline-Oxide Analogues and Superoxide Anion Radicals

XU Ying-Kai, SUN Jian, LIU Ke, CHEN Zhong-Wei, ZHANG Xing-Kang, LIU Yang   

  1. State Key Lab for Structural Chemistryof Unstableand Stable Species, Center for Molecular Science, Instituteof Chemistry, the Chinese Academy of Sciences, Beijing, 100080, China
  • Received:2001-07-03 Online:2001-10-24 Published:2001-10-24

关键词: 自旋捕捉, 硝酮, 电子自旋共振, 超氧阴离子

Abstract: The synthesis of a novel α phosphorus containing spin trap, DEPDMPO(5-diethoxy Phosphoryl-2, 5-dimethyl-1 pyrroline N-oxide) and the evaluation of its ability to spin trap the hydroxyl and the superoxide anion radicals were described in the present article. The ability to trap an active superoxide anion radical generated in the photo system Ⅱ(PSII) and the stability of their spin adduct of DEPDMPOas well as three previously reported traps DMPO, DEPMPOand m3POwere comparatively analyzed according to their chemical structures. In addition, the effects of 2-methyl and α phosphoryl substituted analogues of DMPOon the stabilities of the corresponding spin adduts were systematically illustrated

Key words: Spin trap, Nitrone, ESR, Superoxide anion

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