Browsing by Author "Crans, D. C."
Now showing items 1-11 of 11
-
Article
Factors Affecting Solution Properties of Vanadium(V) Compounds: X-ray Structure of β-cis-NH4[VO2(EDDA)]1
Crans, D. C.; Keramidas, Anastasios D.; Mahroof-Tahir, M.; Anderson, O. P.; Miller, M. M. (1996)The solution properties of two isomeric forms of the V-EDDA complex (the symmetric α-cis and asymmetric β-cis) have been studied using multinuclear NMR spectroscopy. The isomerization constant of the aqueous equilibrium ...
-
Article
Insulin-mimetic action of vanadium compounds on osteoblast-like cells in culture
Etcheverry, S. B.; Crans, D. C.; Keramidas, Anastasios D.; Cortizo, A. M. (1997)Vanadium compounds mimic insulin actions in different cell types. The present study concerns the insulin-like effects of three vanadium(V) derivatives and one vanadium(IV) complex on osteoblast-like (UMR106 and MC3T3E1) ...
-
Article
Is vanadate reduced by thiols under biological conditions? Changing the Redox potential of V(V)/V(IV) by complexation in aqueous solution
Crans, D. C.; Zhang, B.; Gaidamauskas, E.; Keramidas, Anastasios D.; Willsky, G. R.; Roberts, C. R. (2010)Although dogma states that vanadate is readily reduced by glutathione, cysteine, and other thiols, there are several examples documenting that vanadium(V)-sulfur complexes can form and be observed. This conundrum has ...
-
Article
Organic vanadium compounds - Transition state analogy with organic phosphorus compounds
Crans, D. C.; Keramidas, Anastasios D.; Drouza, Chryssoula (1996)Vanadium compounds, particularly in oxidation state V, are potent inhibitors of phosphoryl group transfer enzymes. In this paper the existance of a correlation between the coordination geometry of a series of vanadium ...
-
Article
Six-co-ordinated vanadium-(IV) and -(V) complexes of benzimidazole and pyridyl containing ligands
Crans, D. C.; Keramidas, Anastasios D.; Amin, S. S.; Anderson, O. P.; Miller, S. M. (1997)A new series of vanadium-(IV) and -(V) complexes with ligands containing functionalities including hydroxyethyl, carboxylate, amine, pyridyl and benzimidazole have been prepared. The crystal structures of three complexes ...
-
Article
A Slow Exchanging Vanadium(V) Peptide Complex: Vanadium(V)-Glycine-Tyrosine
Crans, D. C.; Holst, H.; Keramidas, Anastasios D.; Render, D. (1995)The solution structure and rate of formation for a vanadium(V)-peptide complex, vanadium(V)-glycine-tyrosine (V-Gly-Tyr), is examined. Multinuclear NMR spectroscopic studies suggest the amide nitrogen is deprotonated and ...
-
Article
Solution and Solid State Properties of [N-(2-Hydroxyethyl)iminodiacetato]vanadium(IV), -(V), and -(IV/V) Complexes
Mahroof-Tahir, M.; Keramidas, Anastasios D.; Goldfarb, R. B.; Anderson, O. P.; Miller, M. M.; Crans, D. C. (1997)β= 102.53(2)°
-
Article
Speciation in Vanadium Bioinorganic Systems. 5. Interactions between Vanadate, Uridine, and Imidazole - An Aqueous Potentiometric, 51V, 17O, and 13C NMR Study
Elvingson, K.; Keramidas, Anastasios D.; Crans, D. C.; Pettersson, L. (1998)The full speciation has been determined in the aqueous vanadate-uridine (UrH2) and vanadate-uridine-imidazole (ImH) systems. The studies performed allow direct comparison with the corresponding adenosine systems, and the ...
-
Article
Synthesis, structure, and biological activity of a new insulinomimetic peroxovanadium compound: Bisperoxovanadium imidazole monoanion [3]
Crans, D. C.; Keramidas, Anastasios D.; Hoover-Litty, H.; Anderson, O. P.; Miller, M. M.; Lemoine, L. M.; Pleasic-Williams, S.; Vandenberg, M.; Rossomando, A. J.; Sweet, L. J. (1997)
-
Article
Vanadium chemistry and biochemistry of relevance for use of vanadium compounds as antidiabetic agents
Crans, D. C.; Mahroof-Tahir, M.; Keramidas, Anastasios D. (1995)The stability of 11 vanadium compounds is tested under physiological conditions and in administration fluids. Several compounds including those currently used as insulin-mimetic agents in animal and human studies are stable ...
-
Article
Vanadium(V) hydroxylamido complexes: Solid state and solution properties
Keramidas, Anastasios D.; Miller, S. M.; Anderson, O. P.; Crans, D. C. (1997)A novel series of vanadium(V) hydroxylamido complexes with weak ligands including glycine, [VO-(NH2O)2(Glycine)]· H2O (1)