Syntheses, Urease Inhibition, and Antimicrobial Studies of Some Chiral 3-Substituted-4-amino-5-thioxo-1H,4H-1,2,4-triazoles

被引:56
作者
Akhtar, Tashfeen [1 ]
Hameed, Shahid [1 ]
Khan, Khalid Mohammed [2 ]
Choudhary, Muhammad Iqbal [2 ]
机构
[1] Quaid i Azam Univ, Dept Chem, Islamabad 45230, Pakistan
[2] Univ Karachi, Int Ctr Chem & Biol Sci, HEJ Res Inst Chem, Karachi 75270, Pakistan
关键词
Chiral triazoles; synthesis; antibacterial activity; urease inhibition;
D O I
10.2174/157340608786242025
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Chiral 3-substituted-4-amino-5-thioxo-1H,4H-1,2,4-triazoles (5a-i) were synthesized. The target molecules were prepared by cyclization of the corresponding dithiocarbazinic acids, obtained from hydrazides, in the presence of hydrazine hydrate. The chiral hydrazides were in turn synthesized form L-amino acids. The structures of all the compounds were confirmed by modern spectroscopic techniques and purity ascertained by elemental analysis. The synthesized compounds 5a-i were evaluated for urease inhibition and found to exhibit varying degrees of urease inhibition activity showing IC50 values ranging from 22.0 +/- 0.5 to 43.8 +/- 0.3 mu M. Compound 5b was found to be the most active, exhibiting IC50 = 22.0 +/- 0.5 mu M comparable to the standard, thiourea (IC50 = 21.0 +/- 0.1 mu M). Triazoles 5a-i were also screened for their antimicrobial properties and promising antibacterial activities were observed against five pathogenic bacteria. However, all the compounds were devoid of any antifungal activity.
引用
收藏
页码:539 / 543
页数:5
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