| Autor: |
Ruíz M; Departamento de Química Inorgánica, Faculdad de Farmacia, Universidad de Valencia, Burjassot (Valencia), Spain., Perelló L, Server-Carrió J, Ortiz R, García-Granda S, Díaz MR, Cantón E |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of inorganic biochemistry [J Inorg Biochem] 1998 Mar; Vol. 69 (4), pp. 231-9. |
| DOI: |
10.1016/s0162-0134(97)10028-9 |
| Abstrakt: |
Several cinoxacin (HCx) complexes with divalent metal ions have been prepared and characterized by spectroscopic techniques. The crystal structure of [Cd2(Cx)4(H2O)2].10H2O has been determined by X-ray diffraction. The complex is triclinic, space group P1 with unit-cell dimensions: a = 10.412(2), b = 11.119(2), c = 13.143(6)A, chi== 76.78(4) degrees, beta = 74.59(3) degrees, gamma = 77.12(3) degrees, V = 1406.0(8) A3. In this complex each cadmium atom is heptacoordinated: the metal environment is formed by two Oketo and two Ocarbox atoms from two different cinoxacinate monoanions, two carboxylate oxygen atoms from a third cinoxacinate ligand and by one water oxygen atom on the seventh position. Two of the cinoxacinate ions act as tridentate chelate and bridging ligands and the other one as a bidentate chelate ligand. In the bridging monoanions the carboxylate group is behaving as a chelate ligand. All the complexes were screened for their activity against several bacteria, showing activity similar to that of cinoxacin. Additionally, the number of bacteria killed after 3 h of incubation with cinoxacin, [Cu(Cx)2].2H2O and [Co(Cx)3]Na.10H2O complexes was determined against E. coli ATCC 25922; the copper compound presents paradoxical effect which has been described and related to the mechanism of action of quinolones. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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