Speciation in Vanadium Bioinorganic Systems. 3. A Potentiometric and 51V, 13C and 1H NMR Study of the Aqueous H+-Vanadate(V)-L-Prolyl-L-alanine/L-Alanyl-glycine Systems.

Probing for missing links in the binary and ternary V(V)–citrate–(H2O2) systems: Synthetic efforts and in vitro insulin mimetic activity studies

“…Concurrently, it has been shown to exhibit bioactivities including antitumorigenicity [14][15][16], mitogenicity [17,18], and inhibition of metabolic enzymes such as phosphoglucomutases and others [19,20]. Noteworthy, however, has been the association of vanadium with the heterogeneous syndrome of Diabetes mellitus by virtue of its insulin mimetic activity [21][22][23][24][25][26][27][28][29][30][31][32][33].…”

“…Understanding such interactions has been one of the most significant goals of vanadium research, specifically targeting the solubility and biovailability of vanadium species bound to organic substrates. To this end, solution speciation studies [24][25][26][27][28][29][30][31][32][33][34][35] projecting fundamental characteristics on binary and ternary vanadium systems, containing physiological as well as biologically relevant ligands, were reported. Among the various ligands studied in the presence of vanadium were hydroxycarboxylate-containing organic ligands, such as citric acid.…”

Heteropolymolybdates of AsIII, SbIII, BiIII, SeIV, and TeIV Functionalized by Amino Acids

“…[6,7] The reactivity of amino acids with polyoxovanadates has also been investigated in model studies for polyoxometalateprotein interactions. [8,9] (HO 2 C À (NH 3 þ )HC À CH 2 À S À S À CH 2 À CH(NH 3 þ ) À COO À ) 11 ] 3À . [10±12] Recently Pope et al studied the stereoselective interaction of amino acids with cerium-substituted, Dawson-type polyoxotungstates.…”

“…[3] Bimetallic Pd±Co particles, for example, have shown improved selectivity over pure Co particles in Fischer±Tropsch reactions. [4±8] Since the conversion of natural resources into syngas (CO þ H 2 ) and then to clean fuels through the Fischer±Tropsch reaction will likely become evermore important with changing supplies and environmental concerns, [9] a detailed understanding of such effects by means of suitable model systems is needed.…”

Fifteen Years of Dancing with Vanadium

“…The reaction of vanadate with ethanol [20] was the first of a series of organic systems that included numerous coordinating functionalities such as hydroxyl [20,21], carboxyl [35,48,49], amino [35,38,50,51], amido [52][53][54], phospho [22,55], and bi- [21,35,38,49,56] and multidentate [34,37,39,51,[53][54][55][57][58][59][60][61][62] ies mapped out what types of complexes formed, the pH dependence of complex formation, and the stoichiometry of the systems. This approach was followed in most subsequent studies.…”