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Deka R, Pant R, Gupta A, Naresh Patwari G, Singh HB, Butcher RJ. Isolation of a telluroxane cluster [(R2TeO)(μ-TeO2)(OTeR2)][TeO(OH)2] (R = C6H5NNC6H4) stabilized by intra- and intermolecular secondary bonding interactions: Molecular and electronic structure analysis. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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2
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Srivastava K, Panda A, Sharma S, Singh HB. Telluroxanes: Synthesis, structure and applications. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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3
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Carrera EI, Seferos DS. Ring Opening of π-Delocalized 2,5-Diphenyltellurophene by Chemical or Self-Sensitized Aerobic Photooxidation. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00240] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elisa I. Carrera
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Dwight S. Seferos
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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4
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Lutkus LV, Rettig ID, Davies KS, Hill JE, Lohman JE, Eskew MW, Detty MR, McCormick TM. Photocatalytic Aerobic Thiol Oxidation with a Self-Sensitized Tellurorhodamine Chromophore. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00166] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Luke V. Lutkus
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Irving D. Rettig
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Kellie S. Davies
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Jacqueline E. Hill
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - James E. Lohman
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Mathew W. Eskew
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Michael R. Detty
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Theresa M. McCormick
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
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Alberto EE, Muller LM, Detty MR. Rate Accelerations of Bromination Reactions with NaBr and H2O2 via the Addition of Catalytic Quantities of Diaryl Ditellurides. Organometallics 2014. [DOI: 10.1021/om500883f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Eduardo E. Alberto
- Department
of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Lisa M. Muller
- Department
of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Michael R. Detty
- Department
of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
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6
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McCormick TM, Carrera EI, Schon TB, Seferos DS. Reversible oxidation of a water-soluble tellurophene. Chem Commun (Camb) 2013; 49:11182-4. [PMID: 24149322 DOI: 10.1039/c3cc47338d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Theresa M McCormick
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada.
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7
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Koide Y, Kawaguchi M, Urano Y, Hanaoka K, Komatsu T, Abo M, Terai T, Nagano T. A reversible near-infrared fluorescence probe for reactive oxygen species based on Te–rhodamine. Chem Commun (Camb) 2012; 48:3091-3. [DOI: 10.1039/c2cc18011a] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Oba M, Okada Y, Endo M, Tanaka K, Nishiyama K, Shimada S, Ando W. Formation of Diaryl Telluroxides and Tellurones by Photosensitized Oxygenation of Diaryl Tellurides. Inorg Chem 2010; 49:10680-6. [DOI: 10.1021/ic101708y] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Makoto Oba
- Department of Materials Chemistry, Tokai University, Numazu, Shizuoka 410-0395, Japan
| | - Yasunori Okada
- Department of Materials Chemistry, Tokai University, Numazu, Shizuoka 410-0395, Japan
| | - Masaki Endo
- Department of Materials Chemistry, Tokai University, Numazu, Shizuoka 410-0395, Japan
| | - Kazuhito Tanaka
- Department of Materials Chemistry, Tokai University, Numazu, Shizuoka 410-0395, Japan
| | - Kozaburo Nishiyama
- Department of Materials Chemistry, Tokai University, Numazu, Shizuoka 410-0395, Japan
| | - Shigeru Shimada
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Wataru Ando
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
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9
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Oba M, Okada Y, Nishiyama K, Ando W. Aerobic photooxidation of phosphite esters using diorganotelluride catalysts. Org Lett 2009; 11:1879-81. [PMID: 19341270 DOI: 10.1021/ol900240s] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diorganotellurides containing bulky aromatic substituents are found to catalyze the photooxidation of phosphite esters using aerobic oxygen as a terminal oxidant. A Hammett plot with substituted triaryl phosphites yielding rho = 2.88 agrees with a nucleophilic oxygen transfer from telluroxide to phosphite.
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Affiliation(s)
- Makoto Oba
- Department of Materials Chemistry, Tokai University, 317 Nishino, Numazu, Shizuoka 410-0395, Japan
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10
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Minnes R, Weitman H, You Y, Detty MR, Ehrenberg B. Dithiaporphyrin Derivatives as Photosensitizers in Membranes and Cells. J Phys Chem B 2008; 112:3268-76. [DOI: 10.1021/jp0768423] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Refael Minnes
- Department of Physics and Nano Medicine Research Center, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 52900, Israel, and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260
| | - Hana Weitman
- Department of Physics and Nano Medicine Research Center, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 52900, Israel, and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260
| | - Youngjae You
- Department of Physics and Nano Medicine Research Center, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 52900, Israel, and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260
| | - Michael R. Detty
- Department of Physics and Nano Medicine Research Center, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 52900, Israel, and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260
| | - Benjamin Ehrenberg
- Department of Physics and Nano Medicine Research Center, Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 52900, Israel, and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260
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11
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You Y, Ahsan K, Detty MR. Mechanistic studies of the tellurium(II)/tellurium(IV) redox cycle in thiol peroxidase-like reactions of diorganotellurides in methanol. J Am Chem Soc 2003; 125:4918-27. [PMID: 12696911 DOI: 10.1021/ja029590m] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Di-n-hexyl telluride (2), di-p-methoxyphenyl telluride (3), and (S)-2-(1-N,N-dimethylaminoethyl)phenyl phenyl telluride (4) catalyzed the oxidation of PhSH to PhSSPh with H(2)O(2) in MeOH. Telluride 2 displayed greater rate acceleration than the diaryltellurides 3 and 4 as determined by the initial velocities, v(0), for the rate of appearance of PhSSPh determined at 305 nm by stopped-flow spectroscopy. Rate constants for the oxidation of tellurides 2-4 (k(ox)), rate constants for the introduction of PhSH as a ligand to the Te(IV) center (k(PhSH)) of oxidized tellurides 5-7, and thiol-independent (k(1)) and thiol-dependent (k(2)) rate constants for reductive elimination at Te(IV) in oxidized tellurides 5-7 were determined using stopped-flow spectroscopy. Oxidation of the Te atom of the electron-rich dialkyl telluride 2 was more rapid than oxidation of diaryl tellurides 3 and 4. The dimethylaminoethyl substituent of 4, which acts as a chelating ligand to Te(IV), did not affect k(ox). Values of k(PhSH) for the introduction of PhSH to oxidized dialkyl tellurane 5 and oxidized diaryl tellurane 6 were comparable in magnitude, while the chelating dimethylaminoethyl ligand of oxidized telluride 7 diminished k(PhSH) by a fator of 10(3). Reductive elimination by both first-order, thiol-independent (k(1)) and second-order, thiol-dependent (k(2)) pathways was slower from dialkyl Te(IV) species derived from 2 than from diaryl Te(IV) species derived from 3. The chelating dimethylaminoethyl ligand of Te(IV) species derived from 4 diminished k(1) by a factor of 50 and k(2) by a factor of 3 (relative to the 3-derived species).
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Affiliation(s)
- Youngjae You
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA
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12
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Hansch C, Kurup A, Garg R, Gao H. Chem-bioinformatics and QSAR: a review of QSAR lacking positive hydrophobic terms. Chem Rev 2001; 101:619-72. [PMID: 11712499 DOI: 10.1021/cr0000067] [Citation(s) in RCA: 177] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C Hansch
- Department of Chemistry, Pomona College, Claremont, California 91711, USA
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13
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Leonard KA, Nelen MI, Simard TP, Davies SR, Gollnick SO, Oseroff AR, Gibson SL, Hilf R, Chen LB, Detty MR. Synthesis and evaluation of chalcogenopyrylium dyes as potential sensitizers for the photodynamic therapy of cancer. J Med Chem 1999; 42:3953-64. [PMID: 10508443 DOI: 10.1021/jm990245q] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A series of thiopyrylium (2), selenopyrylium (3), and telluropyrylium dyes (4) was prepared via the addition of Grignard reagents to either 2, 6-di(4-dimethylamino)phenylchalcogenopyran-4-ones (5a) or 2-[4-(dimethylamino)phenyl]-6-phenylchalcogenopyran-4-ones (5b) followed by elimination and ion exchange to give the chloride salts. The absorption spectra and quantum yields for singlet oxygen generation of these dyes suggested that the dyes would have utility as sensitizers for PDT. Selenopyrylium dyes 3a and 3d with quantum yields for singlet oxygen generation of 0.040 and 0.045, respectively, were phototoxic to Colo-26 cells in culture. The toxicity of the dyes 2-4 was evaluated in clonogenic assays of human carcinoma cell lines. Importantly, the presence of a sulfur, selenium, or tellurium heteroatom in the molecules had no predictable impact on the toxicity of any particular dye set. Substituents at the 2-, 4-, and 6-positions of the dye had a much greater impact on cytotoxicity. The IC(50) values determined in the clonogenic assays did not correlate with chemical properties in the dye molecules such as reduction potential or lipophilicity. Initial in vivo toxicity studies showed no toxicity for these dyes at dosages between 7.2 and 38 micromol/kg in BALB/c mice.
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Affiliation(s)
- K A Leonard
- Departments of Chemistry and Medicinal Chemistry, State University of New York at Buffalo, Buffalo, New York 14260, USA
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Leonard KA, Nelen MI, Anderson LT, Gibson SL, Hilf R, Detty MR. 2,4,6-triarylchalcogenopyrylium dyes related in structure to the antitumor agent AA1 as in vitro sensitizers for the photodynamic therapy of cancer. J Med Chem 1999; 42:3942-52. [PMID: 10508442 DOI: 10.1021/jm990134r] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cationic chalcogenopyrylium dyes 2-4 were synthesized in six steps from 4-(dimethylamino)phenylethyne (7), have absorption maxima in methanol of 594, 631, and 672 nm, respectively, and generate singlet oxygen with quantum yields [Phi((1)O(2))] of 0.020, 0.064, and 0.037, respectively. Dyes 2-4 are hydrolytically more stable than other chalcogenopyrylium dyes evaluated previously as sensitizers for photodynamic therapy. At 10 microM final concentration, all dyes 2-4 inhibited cytochrome c oxidase during irradiation of tumor mitochondrial suspensions treated with 10 microM dye. The degree of enzyme inhibition was abated in a reduced oxygen environment and in the presence of imidazole, a singlet oxygen trap. Superoxide dismutase, at a final concentration of 30 U, did not alter the photosensitized inhibition of mitochondrial cytochrome c oxidase by dyes 2-4. These data suggest that singlet oxygen may play a major role in the photosensitized inhibition of mitochondrial cytochrome c oxidase. Irradiation of R3230AC rat mammary adenocarcinoma cells in the presence of dyes 2-4 caused a significant loss in cell viability with thiopyrylium dye 2 displaying the greatest phototoxicity. Initial acute toxicity studies in vivo demonstrate that, at 10 mg/kg, none of the three dyes displayed overt toxicity.
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Affiliation(s)
- K A Leonard
- Departments of Chemistry and Medicinal Chemistry, State University of New York at Buffalo, Buffalo, New York 14260, USA
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15
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Friedrichsen W. Recent Advances in the Chemistry of Benzo[c]furans and Related Compounds. ADVANCES IN HETEROCYCLIC CHEMISTRY VOLUME 73 1999. [DOI: 10.1016/s0065-2725(08)60940-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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