TY  - JOUR
AU  - Davidović, A.
AU  - Tabaković, I.
AU  - Sladić, Dušan
AU  - Dogović, N.
AU  - Gašic, M.J.
PY  - 1991
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/24
AB  - The electrochemical reduction of avarone (Q), an antitumor sesquiterpenoid quinone, was investigated at various pH in aqueous ethanol containing a cationic surfactant, cetyltrimethylammonium bromide (CTAB) by cyclic and rotating disc electrode voltammetry, using a glassy carbon electrode. Comparison of the electrochemical reduction of Q in presence of CTAB with the same process in a homogeneous water + ethanol solution shows an anodic shift of the reduction potential in the presence of CTAB; at pH  gt  9.5 and in presence of CTAB, two well-defined reduction peaks are observed, thus confirming one-electron reduction of Q, whereby the intermediate radical-anion is stabilized by the cationic micellar medium. The electrochemical oxidation of BNAH was investigated by cyclic voltammetry, and the anodic shift of the peak potential in presence of CTAB was observed. From the electrochemical behaviour of Q and BNAH, and the kinetics of the oxidation of BNAH with Q, it is suggested that the reaction takes place in two successive one-electron transfer steps. The application of the Marcus theory gives additional proof that, in this case, the first electron transfer is the rate determining step. © 1991.
T2  - Bioelectrochemistry and Bioenergetics
T1  - Mechanism of oxidation of 1-benzyl-1,4-dihydronicotinamide by the biologically active p-benzoquinone derivative, avarone, in a cationic micellar medium. An electrochemical approach
VL  - 26
IS  - 3
SP  - 457
EP  - 468
DO  - 10.1016/0302-4598(91)85007-O
ER  - 

@article{
author = "Davidović, A. and Tabaković, I. and Sladić, Dušan and Dogović, N. and Gašic, M.J.",
year = "1991",
abstract = "The electrochemical reduction of avarone (Q), an antitumor sesquiterpenoid quinone, was investigated at various pH in aqueous ethanol containing a cationic surfactant, cetyltrimethylammonium bromide (CTAB) by cyclic and rotating disc electrode voltammetry, using a glassy carbon electrode. Comparison of the electrochemical reduction of Q in presence of CTAB with the same process in a homogeneous water + ethanol solution shows an anodic shift of the reduction potential in the presence of CTAB; at pH  gt  9.5 and in presence of CTAB, two well-defined reduction peaks are observed, thus confirming one-electron reduction of Q, whereby the intermediate radical-anion is stabilized by the cationic micellar medium. The electrochemical oxidation of BNAH was investigated by cyclic voltammetry, and the anodic shift of the peak potential in presence of CTAB was observed. From the electrochemical behaviour of Q and BNAH, and the kinetics of the oxidation of BNAH with Q, it is suggested that the reaction takes place in two successive one-electron transfer steps. The application of the Marcus theory gives additional proof that, in this case, the first electron transfer is the rate determining step. © 1991.",
journal = "Bioelectrochemistry and Bioenergetics",
title = "Mechanism of oxidation of 1-benzyl-1,4-dihydronicotinamide by the biologically active p-benzoquinone derivative, avarone, in a cationic micellar medium. An electrochemical approach",
volume = "26",
number = "3",
pages = "457-468",
doi = "10.1016/0302-4598(91)85007-O"
}

Davidović, A., Tabaković, I., Sladić, D., Dogović, N.,& Gašic, M.J.. (1991). Mechanism of oxidation of 1-benzyl-1,4-dihydronicotinamide by the biologically active p-benzoquinone derivative, avarone, in a cationic micellar medium. An electrochemical approach. in Bioelectrochemistry and Bioenergetics, 26(3), 457-468.
https://doi.org/10.1016/0302-4598(91)85007-O

Davidović A, Tabaković I, Sladić D, Dogović N, Gašic M. Mechanism of oxidation of 1-benzyl-1,4-dihydronicotinamide by the biologically active p-benzoquinone derivative, avarone, in a cationic micellar medium. An electrochemical approach. in Bioelectrochemistry and Bioenergetics. 1991;26(3):457-468.
doi:10.1016/0302-4598(91)85007-O .

Davidović, A., Tabaković, I., Sladić, Dušan, Dogović, N., Gašic, M.J., "Mechanism of oxidation of 1-benzyl-1,4-dihydronicotinamide by the biologically active p-benzoquinone derivative, avarone, in a cationic micellar medium. An electrochemical approach" in Bioelectrochemistry and Bioenergetics, 26, no. 3 (1991):457-468,
https://doi.org/10.1016/0302-4598(91)85007-O . .

TY  - JOUR
AU  - Tabaković, I.
AU  - Davidović, A.
AU  - Müller, W.E.G.
AU  - Zahn, R.K.
AU  - Sladić, Dušan
AU  - Dogović, N.
AU  - Gašić, M.J.
PY  - 1987
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/71
AB  - The redox reactivity of avarone and avarol, a quinone/hydroquinone couple isolated from the marine sponge Dysidea avara, was investigated by cyclic voltammetry, using a glassy carbon electrode. Both oxidation of avarol and reduction of avarone in aqueous ethanol (1:1 V/V) take place by a 2 e- process at a wide range of pH values; in acetonitrile, however, the reduction of avarone occurs as a stepwise electron transfer process. The mechanisms, as well as the scope and limitations of the method are discussed with reference to the biological activity of the two sesquiterpenoids. © 1987.
T2  - Bioelectrochemistry and Bioenergetics
T1  - Electrochemical reactivity of biologically active quinone/hydroquinone sesquiterpenoids on glassy carbon electrodes
VL  - 17
IS  - 3
SP  - 567
EP  - 577
DO  - 10.1016/0302-4598(87)80064-8
ER  - 

@article{
author = "Tabaković, I. and Davidović, A. and Müller, W.E.G. and Zahn, R.K. and Sladić, Dušan and Dogović, N. and Gašić, M.J.",
year = "1987",
abstract = "The redox reactivity of avarone and avarol, a quinone/hydroquinone couple isolated from the marine sponge Dysidea avara, was investigated by cyclic voltammetry, using a glassy carbon electrode. Both oxidation of avarol and reduction of avarone in aqueous ethanol (1:1 V/V) take place by a 2 e- process at a wide range of pH values; in acetonitrile, however, the reduction of avarone occurs as a stepwise electron transfer process. The mechanisms, as well as the scope and limitations of the method are discussed with reference to the biological activity of the two sesquiterpenoids. © 1987.",
journal = "Bioelectrochemistry and Bioenergetics",
title = "Electrochemical reactivity of biologically active quinone/hydroquinone sesquiterpenoids on glassy carbon electrodes",
volume = "17",
number = "3",
pages = "567-577",
doi = "10.1016/0302-4598(87)80064-8"
}

Tabaković, I., Davidović, A., Müller, W.E.G., Zahn, R.K., Sladić, D., Dogović, N.,& Gašić, M.J.. (1987). Electrochemical reactivity of biologically active quinone/hydroquinone sesquiterpenoids on glassy carbon electrodes. in Bioelectrochemistry and Bioenergetics, 17(3), 567-577.
https://doi.org/10.1016/0302-4598(87)80064-8

Tabaković I, Davidović A, Müller W, Zahn R, Sladić D, Dogović N, Gašić M. Electrochemical reactivity of biologically active quinone/hydroquinone sesquiterpenoids on glassy carbon electrodes. in Bioelectrochemistry and Bioenergetics. 1987;17(3):567-577.
doi:10.1016/0302-4598(87)80064-8 .

Tabaković, I., Davidović, A., Müller, W.E.G., Zahn, R.K., Sladić, Dušan, Dogović, N., Gašić, M.J., "Electrochemical reactivity of biologically active quinone/hydroquinone sesquiterpenoids on glassy carbon electrodes" in Bioelectrochemistry and Bioenergetics, 17, no. 3 (1987):567-577,
https://doi.org/10.1016/0302-4598(87)80064-8 . .