Candeias LP, Steenken S. Structure and acid-base properties of one-electron-oxidized deoxyguanosine, guanosine, and 1-methylguanosine. J Am Chem Soc 2002. [DOI: 10.1021/ja00185a046] [Citation(s) in RCA: 317] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]

Del Giacco T, Baciocchi E, Steenken S. One-electron oxidation of alkylbenzenes in acetonitrile by photochemically produced nitrate radical: evidence for an inner-sphere mechanism. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100123a003] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]

Raghavan NV, Steenken S. Electrophilic reaction of the hydroxyl radical with phenol. Determination of the distribution of isomeric dihydroxycyclohexadienyl radicals. J Am Chem Soc 2002. [DOI: 10.1021/ja00530a031] [Citation(s) in RCA: 174] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]

Steenken S, Lyda M. Fumarate and maleate as spin traps for acyl radicals. Decarboxylation of the adduct radicals to yield 1-carboxy-3-oxyallyl radical dianions. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100538a014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Steenken S. Oxidation of phenolates and phenylenediamines by 2-alkononyl radicals produced from 1,2-dihydroxy- and 1-hydroxy-2-alkoxyalkyl radicals. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100468a008] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Verbeek JM, Stapper M, Krijnen ES, van Loon JD, Lodder G, Steenken S. Photochemical Formation and Electrophilic Reactivities of Vinyl Cations. Influence of Substituents, Anionic Leaving Groups, Solvents, and Excitation Wavelength on Photoheterolysis and Photohomolysis of 1-(p-R-Phenyl)-2-(2,2'-biphenyldiyl)vinyl Halides. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100089a027] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Steenken S, Telo JP, Novais HM, Candeias LP. One-electron-reduction potentials of pyrimidine bases, nucleosides, and nucleotides in aqueous solution. Consequences for DNA redox chemistry. J Am Chem Soc 2002. [DOI: 10.1021/ja00038a037] [Citation(s) in RCA: 219] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]

Kirmse W, Kilian J, Steenken S. Carbenes and the oxygen-hydrogen bond: spectroscopic evidence for protonation of diarylcarbenes to give diarylcarbenium ions. J Am Chem Soc 2002. [DOI: 10.1021/ja00173a039] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]

Fujita S, Steenken S. Pattern of hydroxyl radical addition to uracil and methyl- and carboxyl-substituted uracils. Electron transfer of hydroxyl adducts with N,N,N',N'-tetramethyl-p-phenylenediamine and tetranitromethane. J Am Chem Soc 2002. [DOI: 10.1021/ja00400a009] [Citation(s) in RCA: 241] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]

Steenken S, Neta P. Oxidation of substituted alkyl radicals by hexachloroiridate(2-), hexacyanoferrate(3-), and permanganate ions in aqueous solution. Electron transfer versus chlorine transfer from hexachloroiridate(2-) ion. J Am Chem Soc 2002. [DOI: 10.1021/ja00369a017] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]

Pohl K, Wieghardt K, Kaim W, Steenken S. Redox reactivity of bis(1,4,7-triazacyclononane)iron(II/III) complexes in alkaline solution and characterization of a deprotonated species: amidoiron(III) vs aminyliron(II) ground-state formulation. EPR, kinetic, pulse radiolysis, and laser photolysis study. Inorg Chem 2002. [DOI: 10.1021/ic00276a003] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Neta P, Huie RE, Maruthamuthu P, Steenken S. Solvent effects in the reactions of peroxyl radicals with organic reductants: evidence for proton-transfer-mediated electron transfer. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100359a025] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Jovanovic SV, Steenken S, Tosic M, Marjanovic B, Simic MG. Flavonoids as Antioxidants. J Am Chem Soc 2002. [DOI: 10.1021/ja00090a032] [Citation(s) in RCA: 993] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]

Dogan I, Steenken S, Schulte-Frohlinde D, Icli S. Electron spin resonance and pulse radiolysis studies on the reaction of hydroxyl radical and sulfate(1-) radical with five-membered heterocyclic compounds in aqueous solution. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100368a032] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Jovanovic SV, Steenken S, Simic MG. Kinetics and energetics of one-electron-transfer reactions involving tryptophan neutral and cation radicals. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100155a035] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Steenken S, Neta P. One-electron redox potentials of phenols. Hydroxy- and aminophenols and related compounds of biological interest. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100215a033] [Citation(s) in RCA: 351] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]

Steenken S, O'Neill P. Reaction of hydroxyl radicals with 2- and 4-pyridones in aqueous solution. An electron spin resonance and pulse radiolysis study. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100481a021] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Steenken S, McClelland RA. Lifetimes of .alpha.-dialkoxy carbocations produced via radical cations generated by electron transfer and photoionization in aqueous solution. J Am Chem Soc 2002. [DOI: 10.1021/ja00195a061] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Steenken S, Jagannadham V. Reaction of 6-yl radicals of uracil, thymine, and cytosine and their nucleosides and nucleotides with nitrobenzenes via addition to give nitroxide radicals. Hydroxide ion-catalyzed nitroxide heterolysis. J Am Chem Soc 2002. [DOI: 10.1021/ja00310a013] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]

Mathivanan N, McClelland RA, Steenken S. A kinetic method for the measurement of the pKR value of the triphenylmethyl cation in the aqueous standard state. J Am Chem Soc 2002. [DOI: 10.1021/ja00179a033] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Mathivanan N, Cozens F, McClelland RA, Steenken S. Regioselective photoprotonation of 1,3-dimethoxybenzenes in 1,1,1,3,3,3-hexafluoroisopropyl alcohol. H-D isotope-exchange and laser flash photolysis studies. J Am Chem Soc 2002. [DOI: 10.1021/ja00032a039] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]

Candeias LP, Steenken S. Electron transfer in di(deoxy)nucleoside phosphates in aqueous solution: rapid migration of oxidative damage (via adenine) to guanine. J Am Chem Soc 2002. [DOI: 10.1021/ja00059a044] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Akhlaq MS, Murthy CP, Steenken S, Von Sonntag C. Reaction of .alpha.-hydroxyalkyl radicals and their anions with oxidized dithiothreitol: a pulse radiolysis and product analysis study. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100347a083] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]

Novais HM, Steenken S. ESR studies of electron and hydrogen adducts of thymine and uracil and their derivatives and of 4,6-dihydroxypyrimidines in aqueous solution. Comparison with data from solid state. The protonation at carbon of the electron adducts. J Am Chem Soc 2002. [DOI: 10.1021/ja00261a001] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]

Vieira AJSC, Steenken S. Pattern of OH radical reaction with N6,N6-dimethyladenosine. Production of three isomeric OH adducts and their dehydration and ring-opening reactions. J Am Chem Soc 2002. [DOI: 10.1021/ja00258a031] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]