Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (8): 783-788. Previous Articles     Next Articles

Zn2+,Cu2+及Ni2+对二甲双胍的配合作用及降血糖活性研究

朱苗力, 卢丽萍, 杨频   

  1. 山西大学分子科学研究所, 化学生物学与分子工程教育部重点实验室, 太原, 030006
  • 投稿日期:2003-12-12 修回日期:2004-03-08 发布日期:2014-02-18
  • 通讯作者: 杨频,E-mail:yangpin@sxu.edu.cn E-mail:yangpin@sxu.edu.cn
  • 基金资助:
    国家自然科学基金(No.20171031)、山西省青年基金(No.20011007)和2002年山西省归国留学基金资助项目.

Studies on the Structures and Antihyperglycemic Effects of Zn2+, Cu2+, Ni2+-Metformin Complexes

ZHU Miao-Li, LU Li-Ping, YANG Pin   

  1. Institute of Molecular Science, Chemical Biology and Molecular Engineering Laboratory of Education Ministry, Shanxi University, Taiyuan 030006
  • Received:2003-12-12 Revised:2004-03-08 Published:2014-02-18

The structures and charge distribution as well as antihyperglycemic effects of 1,1-dimethylbiguanide (metformin) metal (Zn2+, Cu2+ and Ni2+) complexes were investigated. Metformin can complex with Zn2+ at bridging N, forming a rare monodentate complex, but complex with Cu2+ and Ni2+ at terminal N atoms, giving rise to bidentate complexes. The charge distribution calculated by DFT and ab initio methods indicates that the bridging N atom has more negative charge than terminal N atoms. The antihyperglycemic effects of metformin metal complexes show that the monodentate complex has no effect and bidentate complexes still keep the activity but less efficient than metformin alone. This result suggests that the bridging N atom of metformin be important for its antihyperglycemic effect.

Key words: complexes of metal-metformin, charge distribution, antihyperglycemic effect