Citation:
ZHAO Yue, HAN Xiao, ZHOU Xiao-Xia, LI Hai-Hua, YOU Zhong-Lu. Synthesis, Structures, and Helicobacter Pylori Urease Inhibition of Oxovanadium(Ⅴ) Complexes with Hydrazones[J]. Chinese Journal of Inorganic Chemistry,
;2013, 29(4): 867-874.
doi:
10.3969/j.issn.1001-4861.2013.00.140
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In order to explore new and efficient urease inhibitors, two new oxovanadium(Ⅴ) complexes, [VOL1(OCH3)(CH3OH)] (1) and [VOL2(μ-OCH3)]2 (2) (H2L1=N′-(5-chloro-2-hydroxybenzylidene)-3-nitrobenzohydrazide; H2L2=N′-(5-chloro-2-hydroxybenzylidene)-4-chlorobenzohydrazide), have been synthesized and characterized by physico-chemical methods and single-crystal X-ray diffraction. Compound 1 is a mononuclear complex, and compound 2 is a bis-methanolato bridged centrosymmetric dinuclear complex. The V atom in each complex adopts an octahedral coordination. Thermal stability and urease inhibitory activities of the complexes were studied. The percent inhibition at the concentration of 100 μmol·L-1 on Helicobacter pylori urease is 71.4% for 1 and 73.3% for 2. The IC50 values for 1 and 2 are 63.6 and 37.7 μmol·L-1, respectively. CCDC: 858857, 1; and 858858, 2.
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