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Highly Stable Hexacoordinated Nonoxidovanadium(IV) Complexes of Sterically Constrained Ligands: Syntheses, Structure, and Study of Antiproliferative and Insulin Mimetic Activity

Dash, Subhashree P and Pasayat, Sagarika and Bhakat, Saswati and Roy, Satabdi and Dinda, Rupam and Tiekink, Edward RT and Mukhopadhyay, Subhadip and Bhutia, Sujit K and Hardikar, Manasi R and Joshi, Bimba N and Patil, Yogesh P and Nethaji, M (2013) Highly Stable Hexacoordinated Nonoxidovanadium(IV) Complexes of Sterically Constrained Ligands: Syntheses, Structure, and Study of Antiproliferative and Insulin Mimetic Activity. In: INORGANIC CHEMISTRY, 52 (24). pp. 14096-14107.

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Official URL: http://dx.doi.org/10.1021/ic401866x

Abstract

Three highly stable, hexacoordinated nonoxidovanadium(IV), V-IV(L)(2), complexes (1-3) have been isolated and structurally characterized with tridentate aroylhydrazonates containing ONO donor atoms. All the complexes are stable in the open air in the solid state as well as in solution, a phenomenon rarely observed in nonoxidovanadium(IV) complexes. The complexes have good solubility in organic solvents, permitting electrochemical and various spectroscopic investigations. The existence of nonoxidovanadium(IV) complexes was confirmed by elemental analysis, ESI mass spectroscopy, cyclic voltammetry, EPR, and magnetic susceptibility measurements. X-ray crystallography showed the N3O3 donor set to define a trigonal prismatic geometry in each case. All the complexes show in vitro insulin mimetic activity against insulin responsive L6 myoblast cells, with complex 3 being the most potent, which is comparable to insulin at the complex concentration of 4 mu M, while the others have moderate insulin mimetic activity. In addition, the in vitro antiproliferative activity of complexes 1-3 against the He La cell line was assayed. The cytotoxicity of the complexes is affected by the various functional groups attached to the bezoylhydrazone derivative and 2 showed considerable antiproliferative activity compared to the most commonly used chemotherapeutic drugs.

Item Type: Journal Article
Additional Information: copyright for this article belongs to AMER CHEMICAL SOC,USA
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 21 Jan 2014 08:51
Last Modified: 21 Jan 2014 08:51
URI: http://eprints.iisc.ac.in/id/eprint/48207

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