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Karpov, K. A.; Pekarevskii, B. V.; Potekhin, V. M.

doi:10.1023/a:1013978608299

Russian Journal of General Chemistry

2001

DOI: 10.1023/a:1013978608299

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K. A. Karpov

B. V. Pekarevskii

V. M. Potekhin

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Cited by 3 publications

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“…4-(3¢,4¢-Dihydroxyphenyl)thiazole derivatives were shown earlier to exhibit antiradical activity in the reaction with the stable radical 1,1-diphenyl-2-picrylhydrazyl and antioxidant properties during Tween-80 oxidation [1,2]. These compounds were more active than their structural analog catechol in these reactions.…”

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Synthesis and Antiradical and Antibacterial Activity of 4-(3′,4′-Dihydroxyphenyl)Thiazole Derivatives

et al. 2015

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A series of dihydroxyphenylthiazoles were synthesized via the reaction of 4-(chloroacetyl)catechol with thioamide derivatives. Their antiradical activity was studied using the reaction with the cation-radical 2,2¢-azinobis(3-ethylbenzothiazoline-6-sulfonic acid). Antimicrobial activity of the dihydroxyphenylthiazoles was studied against P. aeruginosa, C. albicans, S. epidermidis, and S. aureus. These compounds were found to belong to toxicity class 4.

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Synthesis and Antiradical and Antibacterial Activity of 4-(3′,4′-Dihydroxyphenyl)Thiazole Derivatives

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Fundamental chemistry of iodine. The reaction of di-iodine towards thiourea and its methyl-derivative: formation of aminothiazoles and aminothiadiazoles through dicationic disulfides

et al. 2014

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The reactivity of di-iodine towards thiourea (TU) and its derivative methylthiourea (MeTU) was studied. A diversity of products was obtained from these reactions. TU reacted with di-iodine in the absence or presence of hydroiodic or hydrochloric acids in a 1 : 1, 1 : 1 : 1 or 1 : 1 : 2 (TU : I2 : HX (X = I, Cl)) molar ratio to form the ionic compounds [(TU2)(2+)2(I(-))·H2O] (1), [2(TU2) (2+)·(Cl(-))·2(I(-))·(I3(-))] (2) and [(TUH)(+) (I3(-))] (3). The compounds [(TU2)(2+)(Br(-))(I3(-))] (4) and [(TU2)(2+)2(Br(-))·H2O] (5) were derived from the reactions of TU with di-iodine in the presence of hydrobromic acid in a 1 : 1 : 1 or 1 : 2 : 1 (TU : I2 : HBr) molar ratio. However, when the product of the reaction between TU and di-iodine in a 2 : 1 (TU : I2) molar ratio was crystallized in acetone-ethylether media the ionic salt of formula [(DAThdH(+))(I(-))] (6) (DAThd = 3,5-diamino-1,2,4-thiadiazole) was obtained. Methylthiourea (MeTU) reacted with di-iodine in the presence of hydrobromic acid (1 : 1 : 1, MeTU : I2 : HBr) in dichloromethane to form a solid product which gives [2(MeTU2) (2+)·(2Br(-))(I4(2-))] (7). Moreover, MeTU reacted with I2 in 2 : 1 (MeTU : I2) to form an intermediate powder product which was crystallized in acetone to give the 2-amino-3,4-dimethylthiazolium cation in [(DMeAThH(+))(I(-))(H2O)] (8). Upon changing the crystallization medium to ethanol, instead of acetone, the cationic 5-amino-3-methylamino-4-methyl-1,2,4-thiadiazolium (AMeAThdH)(+) in [(AMeAThdH(+))(I3(-))] (9) was formed. The compounds were characterized by m.p., FT-IR, UV-Vis, (1)H-NMR spectroscopy and mass spectrometry. The crystal structures of compounds 1-9 were determined by X-ray crystallography.

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Antioxidant Activity of 2-Aminothiazoles Containing a Diterpene Fragment in the Model System of the Liquid-Phase Radical-Chain Oxidation of 1,4-Dioxane

et al. 2020

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Cited by 3 publications

References 3 publications

Synthesis and Antiradical and Antibacterial Activity of 4-(3′,4′-Dihydroxyphenyl)Thiazole Derivatives

Synthesis and Antiradical and Antibacterial Activity of 4-(3′,4′-Dihydroxyphenyl)Thiazole Derivatives

Fundamental chemistry of iodine. The reaction of di-iodine towards thiourea and its methyl-derivative: formation of aminothiazoles and aminothiadiazoles through dicationic disulfides

Antioxidant Activity of 2-Aminothiazoles Containing a Diterpene Fragment in the Model System of the Liquid-Phase Radical-Chain Oxidation of 1,4-Dioxane

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