Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (02): 243.doi: 10.3969/j.issn.0251-0790.2012.02.006

• Article: Inorganic Chemistry • Previous Articles     Next Articles

Synthesis, Characterization and PTP1B Inhibitory Activity of the Vanadium Complexes with Amino-acids

ZHANG Heng-Qiang1, ZHANG Qi-Ying1, LI Jia2, LIU Dong1, WU Xiao-Fang1, SHAN Yong-Kui1   

  1. 1. Department of Chemsitry, East China Normal University, Shanghai 200062, China;
    2. National Center for Drug Screening, Shanghai 201203, China
  • Received:2011-05-12 Online:2012-02-10 Published:2012-01-13

Abstract: Two vanadium-amino acid-hydroxylamido complexes,[VO(NH2O)2(C5H10O2N] (1) and K[VO(NH2O)2(C6H12NO2N]2Cl·H2O(2) were synthesized. Their structures and components were characterized by elemental analysis, IR spectrometry, UV-Vis spectrometry, thermal analysis and X-ray single crystal diffraction and their PTP1B inhibitory activities were also explored. Complexes 1 and 2 both crystallize in triclinic system with space group P1. The central vanadium and seven coordinated atoms form a distorted pentagonal bipyramidal. Two O atoms and three N atoms from hydroxylamine and amino-acids define an equatorial plane approximately perpendicular to V=O. The N of hydroxylamine is cis to N of amino-acids and the O of amino-acids is trans to V=O. Complex 2 displays a good inhibitory activity against PTP1B(inhibition rate is 90.51% at 20 μg/mL).

Key words: Vanadium-amino acid-hydroxylamido complex, Crystal structure, PTP1B inhibitory activity

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