期刊
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
卷 43, 期 8, 页码 1688-1695出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2007.10.006
关键词
naringenin-2-hydroxy benzoyl hydrazone; rare earth(III) complex; DNA binding; antioxidant activity
资金
- National Natural Science Foundation of China [20475023]
Two novel rare earth complexes, Y(III) complex (1) and Eu(III) complex (2), with naringenin-2-hydroxy benzoyl hydrazone ligand were synthesized and characterized. The interaction of the two metal complexes and the free ligand with calf thymus DNA (CT DNA) was investigated by electronic absorption spectroscopy, fluorescence spectroscopy and viscosity measurement. All the experimental evidences indicate that these three compounds can strongly bind to CT DNA via an intercalation mechanism. The intrinsic binding constants of the Y(III) complex (1), Eu(III) complex (2) and the free ligand with CT DNA were 2.1 x 10(4) . 8.5 x 10(4) and 1.6 x 10(4) M-1, respectively. Furthermore, the antioxidant activity of the metal complexes was determined by hydroxyl radical scavenging method in vitro. (c) 2007 Elsevier Masson SAS. All rights reserved.
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