Research Letters in Inorganic Chemistry

Volume 2009, Article ID 314672, 5 pages

http://dx.doi.org/10.1155/2009/314672

Research Letter

## Kinetic and Mechanistic Studies on the Reaction of DL-Methionine with in Aqueous Medium at Physiological pH

^{1}Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India^{2}Department of Pediatrics, Burdwan Medical College, Burdwan, West Bengal 713104, India

Received 10 December 2008; Accepted 4 January 2009

Academic Editor: Wolgang Linert

Copyright © 2009 Tandra Das et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

#### Linked References

- A. K. Ghosh, “Kinetics and mechanism of the interaction of thioglycolic acid with ${[({\text{H}}_{\text{2}}\text{O}){(\text{tap})}_{2}\text{RuORu}{(\text{tap})}_{2}({\text{H}}_{2}\text{O})]}^{2+}$ ion at physiological pH,”
*Transition Metal Chemistry*, vol. 31, no. 7, pp. 912–919, 2006. View at Publisher · View at Google Scholar - A. K. Ghosh, “Kinetic studies of substitution on ${[({\text{H}}_{\text{2}}\text{O}){(\text{tap})}_{2}\text{RuORu}{(\text{tap})}_{2}({\text{H}}_{2}\text{O})]}^{2+}$ ion by DL-penicillamine at physiological pH,”
*Indian Journal of Chemistry A*, vol. 46, no. 4, pp. 610–614, 2007. View at Google Scholar - I. Kostova, “Platinum complexes as anticancer agents,”
*Recent Patents on Anti-Cancer Drug Discovery*, vol. 1, no. 1, pp. 1–22, 2006. View at Publisher · View at Google Scholar - V. Brabec and O. Nováková, “DNA binding mode of ruthenium complexes and relationship to tumor cell toxicity,”
*Drug Resistance Updates*, vol. 9, no. 3, pp. 111–122, 2006. View at Publisher · View at Google Scholar · View at PubMed - I. Kostova, “Ruthenium complexes as anticancer agents,”
*Current Medicinal Chemistry*, vol. 13, no. 9, pp. 1085–1107, 2006. View at Publisher · View at Google Scholar - C. G. Hartinger, S. Zorbas-Seifried, M. A. Jakupec, B. Kynast, H. Zorbas, and B. K. Keppler, “From bench to bedside—preclinical and early clinical development of the anticancer agent indazolium
*trans*-[tetrachlorobis(*1H*-indazole)ruthenate(III)] (KP1019 or FFC14A),”*Journal of Inorganic Biochemistry*, vol. 100, no. 5-6, pp. 891–904, 2006. View at Publisher · View at Google Scholar · View at PubMed - W. H. Ang and P. J. Dyson, “Classical and non-classical ruthenium-based anticancer drugs: towards targeted chemotherapy,”
*European Journal of Inorganic Chemistry*, no. 20, pp. 4003–4018, 2006. View at Publisher · View at Google Scholar - J. J. Roberts and A. J. Thomson, “The mechanism of action of antitumor platinum compounds,”
*Progress in Nucleic Acid Research and Molecular Biology*, vol. 22, pp. 71–133, 1979. View at Publisher · View at Google Scholar - A. W. Prestayko, S. T. Crooke, and S. K. Carter, Eds.,
*Cisplatin, Current Status and New Developments*, A. W. Prestayko, S. T. Crooke, and S. K. Carter, Eds., Academic Press, New York, NY, USA, 1980. - M. P. Hacker, E. B. Douple, and L. H. Krakoff, Eds.,
*Platinum Coordination Compounds in Cancer Chemotherapy*, M. P. Hacker, E. B. Douple, and L. H. Krakoff, Eds., Martinus Nijhoff, Boston, Mass, USA, 1984. - J. Reedijk, “Why does cisplatin reach guanine-N7 with competing S-donor ligands available in the cell?,”
*Chemical Reviews*, vol. 99, no. 9, pp. 2499–2510, 1999. View at Publisher · View at Google Scholar - J. Kozelka, F. Legendre, F. Reeder, and J.-C. Chottard, “Kinetic aspects of interactions between DNA and platinum complexes,”
*Coordination Chemistry Reviews*, vol. 190–192, pp. 61–82, 1999. View at Publisher · View at Google Scholar - S. Goswami, A. R. Chakravarty, and A. Chakravorty, “Chemistry of ruthenium. 2. Synthesis, structure, and redox properties of 2-(arylazo)pyridine complexes,”
*Inorganic Chemistry*, vol. 20, no. 7, pp. 2246–2250, 1981. View at Publisher · View at Google Scholar - S. Goswami, A. R. Chakravarty, and A. Chakravorty, “Chemistry of ruthenium. 7. Aqua complexes of isomeric bis[(2-arylazo)pyridine]ruthenium(II) moieties and their reactions: solvolysis, protic equilibriums, and electrochemistry,”
*Inorganic Chemistry*, vol. 22, no. 4, pp. 602–609, 1983. View at Publisher · View at Google Scholar - J. A. Weyh and R. E. Hamm, “Aquation of the
*cis*-bis(iminodiacetato)chromate(III) and trans(*fac*)-bis(methyliminodiacetato)chromate(III) ions in acidic aqueous medium,”*Inorganic Chemistry*, vol. 8, no. 11, pp. 2298–2302, 1969. View at Publisher · View at Google Scholar - A. E. Martell and R. M. Smith,
*Critical Stability Constants*, vol. 1, Plenum Press, New York, NY, USA, 1974. - B. Mahanti and G. S. De, “Kinetics and mechanism of substitution of aqua ligands from
*cis*-diaqua-*bis*(bipyridyl ruthenium(II)) complex by salicylhydroxamic acid in aqueous medium,”*Transition Metal Chemistry*, vol. 17, no. 6, pp. 521–524, 1992. View at Publisher · View at Google Scholar - S. J. Raven and T. J. Meyer, “Reactivity of the oxo-bridged ion ${[{(\text{bpy})}_{2}(\text{O}){\text{Ru}}^{\text{IV}}{\text{ORu}}^{\text{V}}(\text{O}){(\text{bpy})}_{2}]}^{3+}$,”
*Inorganic Chemistry*, vol. 27, no. 24, pp. 4478–4483, 1998. View at Publisher · View at Google Scholar - W. Kutner, J. A. Gilbert, A. Tomaszewski, T. J. Meyer, and R. W. Murray, “Stability and electrocatalytic activity of the oxo-bridged dimer ${[{(\text{bpy})}_{2}({\text{H}}_{\text{2}}\text{O})\text{RuORu}({\text{OH}}_{\text{2}}){(\text{bpy})}_{2}]}^{4+}$ in basic solutions,”
*Journal of Electroanalytical Chemistry*, vol. 205, no. 1-2, pp. 185–207, 1986. View at Publisher · View at Google Scholar - S. W. Gersten, G. J. Samuels, and T. J. Meyer, “Catalytic oxidation of water by an oxo-bridged ruthenium dimer,”
*Journal of the American Chemical Society*, vol. 104, no. 14, pp. 4029–4030, 1982. View at Publisher · View at Google Scholar - P. Ghosh and A. Chakravorty, “Hydroxamates of bis(2,${2}^{\prime}$-bipyridine)ruthenium: synthesis, protic, redox, and electroprotic equilibria, spectra, and spectroelectrochemical correlations,”
*Inorganic Chemistry*, vol. 23, no. 15, pp. 2242–2248, 1984. View at Publisher · View at Google Scholar - F. A. Cotton, G. Wilkinson, C. A. Murrilo, and M. Bochman,
*Advanced Inorganic Chemistry*, John Wiley & Sons, New York, NY, USA, 6th edition, 2003. - J. A. Gilbert, D. S. Eggleston, W. R. Murphy, Jr. et al., “Structure and redox properties of the water-oxidation catalyst ${[{(\text{bpy})}_{2}({\text{OH}}_{\text{2}})\text{RuORu}({\text{OH}}_{\text{2}}){(\text{bpy})}_{2}]}^{4+}$,”
*Journal of the American Chemical Society*, vol. 107, no. 13, pp. 3855–3864, 1985. View at Publisher · View at Google Scholar - J. A. Gilbert, D. Geselowitz, and T. J. Meyer, “Redox properties of the oxo-bridged osmium dimer ${[{(\text{bpy})}_{2}({\text{OH}}_{\text{2}}){\text{Os}}^{\text{III}}{\text{OOs}}^{\text{IV}}({\text{OH}}_{\text{2}}){(\text{bpy})}_{2}]}^{4+}$. Implications for the oxidation of ${\text{H}}_{2}\text{O}$ to ${\text{O}}_{2}$,”
*Journal of the American Chemical Society*, vol. 108, no. 7, pp. 1493–1501, 1986. View at Publisher · View at Google Scholar - H. Chattopadhyay and A. K. Ghosh, “Kinetic and mechanistic studies of substitution on ${[({\text{H}}_{\text{2}}\text{O}){(\text{tap})}_{2}\text{RuORu}{(\text{tap})}_{2}({\text{H}}_{2}\text{O})]}^{2+}$ ion with uridine in aqueous medium,”
*Inorganic Reaction Mechanisms*, vol. 6, no. 1, pp. 9–17, 2006. View at Google Scholar - L. Zhu and N. M. Kostić, “Toward artificial metallopeptidases: mechanisms by which platinum(II) and palladium(II) complexes promote selective, fast hydrolysis of unactivated amide bonds in peptides,”
*Inorganic Chemistry*, vol. 31, no. 19, pp. 3994–4001, 1992. View at Publisher · View at Google Scholar - L. Zhu and N. M. Kostić, “Hydrolytic cleavage of peptides by palladium(II) complexes is enhanced as coordination of peptide nitrogen to palladium(II) is suppressed,”
*Inorganica Chimica Acta*, vol. 217, no. 1-2, pp. 21–28, 1994. View at Publisher · View at Google Scholar