• Title/Summary/Keyword: 1,2,4-Triazole

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Protective Effects of Thiazolo[3,2-b]-1,2,4-Triazoles on Ethanol­Induced Oxidative Stress in Mouse Brain and Liver

  • Aktay Goknur;Tozkoparan Birsen;Ertan Mevlut
    • Archives of Pharmacal Research
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    • v.28 no.4
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    • pp.438-442
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    • 2005
  • A series of 3-[1-(4-(2-methylpropyl) phenyl) ethyl]-1,2,4-triazole-5-thione (I) and its bicyclic condensed derivatives 6-benzylidenethiazolo[3,2-b]-1, 2,4-triazole-5(6H)-ones (IIa-IIf) were investigated for the prevention of ethanol-induced oxidative stress in liver and brain of mice. Administration of ethanol (0.1 mL/mice, p.o.) resulted in a drop of total thiol groups (T-SH) and non-protein thiol groups (NP-SH), and an increase in thiobarbituric acid reactive substances (TBARS) in both liver and brain tissue of mice (p<0.001). Among the compounds investigated (at a dose of 200 mg/kg, p.o.), I and IId ameliorated the peroxidative injury in these tissues effectively. Compounds IIa, IIc and IIe improved the peroxidative tissue injury only in brain. These findings suggest that certain condensed thiazolo-triazole compounds may contribute to the control of ethanol-induced oxidative stress in an organ selective manner.

Syntheses, Structures, and Characterization of Two Novel Copper(II) and Cadmium(II) Compounds Based on Pyridyl Conjugated 1,2,3-Triazole

  • Hong, Jin-Long;Qu, Zhi-Rong;Ma, Hua-Jun;Wang, Gai-Gai;Zhao, Hong
    • Bulletin of the Korean Chemical Society
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    • v.35 no.5
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    • pp.1495-1500
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    • 2014
  • Two new complexes with 5-methyl-1-(pyridine-3-yl)-1H-1,2,3-triazole-4-carboxylic acid (Hmptc) ligand: [$Cd(mptc)_2(H_2O)_4$] (1) and $[Cu(mptc)_4{\cdot}2H_2O]_n$ (2) were prepared and their crystal structures were determined by single crystal X-ray diffraction analyses. In complex 1, the Cd(II) ions coordinates with the pyridyl nitogen atom from the Hmptc ligand, forming a mononuclear Cd(II) compound. Complex 2 exhibits a novel two-dimensional (2D) polymer in which four Hmptc ligands stabilize the Cu(II) atom. And the coordination involves one nitrogen atom of the triazole, one oxygen atom of the carboxylic acid and the pyridyl nitrogen atom. In addition, FT-IR and solid-state fluorescent emission spectroscopy of two compounds have been determined.

Synthesis and $\beta$-lactamase inhibitory activity of 6-exomethylene penamsulfone derivatives- I (Synthesis of 1-substituted thioalkyl -1,2,3-triazole-4-carboxaldehyde)

  • Yim, Chul-Bu;Youm, Jeong-Rok;Im, Chae-Uk;Park, Hee-Suk;Oh, Jeong-Suk;Park, Kye-Hwan
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1996.04a
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    • pp.159-159
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    • 1996
  • 6-Substituted exomethylene 기를 갖는 penam계 화합물이 $\beta$-lactamase 억제제로서 강력한 활성을 보여주고 있어서, 6-exomethylene기 도입에 필요한 1-substituted thioalkyl-1,2,3-triazole-4-carboxaldehyde를 합성하였다. Haloalkanol에 NaN$_3$를 반응시켜서 합성한 azidoalkanol과 propargyl alcohol을 산화시킨 propargyl aldehyde를 반응시켜서 1-(2-hydroxyalkyl-1,2,3-triazole-4-carboxaldehyde을 얻었다. 이것을 trifluoromethanesulfonic anhydride와 triethylamine 존재 하에 mercapto 화합물과 반응시켜서 목적물을 합성하였다.

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Synthesis and Electro-optical Properties of π-Conjugated Polymer Based on 10-Hexylphenothiazine and Aromatic 1,2,4-Triazole

  • Choi, Ji-Young;Kim, Dong-Han;Lee, Bong;Kim, Joo-Hyun
    • Bulletin of the Korean Chemical Society
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    • v.30 no.9
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    • pp.1933-1938
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    • 2009
  • New $\pi$-conjugated polymer with vinylene linkage, poly((10-hexyl-3,7-phenothiazine)-alt-(4-(4-butyl-phenyl)- 3,5-diphenyl-4H-[1,2,4]triazole)-3,5-vinylene) (PTV-TAZ) was synthesized by the Heck coupling reaction. The photoluminescence (PL) maximum wavelength and the band gap energy of PTV-TAZ film were 555 nm and 2.41 eV, respectively. The HOMO energy level of PTV-TAZ was -4.99 eV, which was slightly lower than that of PTV (-4.89 eV). Electron deficient aromatic 1,2,4-triazole (TAZ) in the polymer backbone does not affect the HOMO energy level significantly. The maximum efficiency and brightness of double layer structured electroluminescent (EL) device (ITO/PEDOT (30 nm)/PTV-TAZ (60 nm)/Al) were 0.247 cd/A and 553 cd/$m^2$, respectively, which were significantly higher than those of the device based PTV (1.65 ${\times}\;10^{-4}$ cd/A and 4.3 cd/$m^2$). This is due to that TAZ unit improves electron transporting ability in the emissive layer. The turn-on voltage (defined as the voltage required to give a luminescence of 1 cd/$m^2$) of brightness of the device based on PTV-TAZ was 12.0 V, which was similar to that the based on PTV (11.5 V). This is due to that the ionization potential of PTV-TAZ is very similar to that of PTV.