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A Study On Synthesis, Biological Activities and Molecular Modelling of Some Novel Trisubstituted 1,2,4-Triazole Derivatives

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2018-08-23

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Gultekin, Ergun
KOLCUOĞLU, YAKUP
Akdemir, ATİLLA
Sirin, Yakup
Bektas, Hakan
BEKİRCAN, OLCAY

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Abstract

In this study, 1-(4-substitued benzyl)-3,5-diphenyl-1H-1,2,4-triazoles (2 a-e) and ethyl(3,5-diphenyl-/H-1,2,4-triazole-1-yl) acetate (3) were synthesized starting from 3,5-diphenyl-/H1,2,4-triazole (1). The ethyl acetate derivative (3) was converted to 2-(3,5-diphenyl-1H-1,2,4-triazole-1-yl)acetohydrazide (4) in ethanolic medium with hydrazine hydrate. The reaction of the acetohydrazide (4) with suitable isothiocyanates generate 2-[(3, 5-diphenyl-1H-1,2,4-triazole-1-yl)acetyl]-4-methyl/phenyh-Ithiosemicarbazide (5a,b). The cyclization of the thiosemicarbazide (5a,b) in the presence of NaOH (2 M) resulted in the formation of 5-[(3,5-diphenyl-1H-1,2,4-triazole-1-yl)methyl]-4methyl/phenyl-2,4-dihidro-3H-1,2,4-triazole-3-thiol (6a,b). Finally, the synthesized 1,2,4-triazole-3-thiols (6a,b) were converted to their 5-substituebenzyl derivatives (7 a-j). All of the synthesized compounds (1-7) were also examined for antioxidant capacities, and antiurease and anti-acetylcholinesterase (anti-AChE) activities. It has been found that antioxidant capacity and anti-urease activity of the compound 7f is very good in biochemically active compounds.

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Gultekin E., KOLCUOĞLU Y., Akdemir A., Sirin Y., Bektas H., BEKİRCAN O., -A Study On Synthesis, Biological Activities and Molecular Modelling of Some Novel Trisubstituted 1,2,4-Triazole Derivatives-, CHEMISTRYSELECT, cilt.3, ss.8813-8818, 2018
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