|
KMID : 0043320160390020161
|
|
Archives of Pharmacal Research
2016 Volume.39 No. 2 p.161 ~ p.171
|
|
|
Synthesis, structural elucidation and bioevaluation of 4-amino-1,2,4-triazole-3-thione’s Schiff base derivatives
|
|
Rafiq Muhammad
Saleem Muhammad
Hanif Muhammad
Kang Sung-Kwon
Seo Sung-Yum
Lee Ki-Hwan
|
|
|
Abstract
|
|
|
|
In this study, a series of ten triazole Schiff base derivatives 6a?j were synthesized through microwave assisted imine formation by reacting substituted amino triazole 5 with different substituted aldehydes. All the synthesized compounds were evaluated for their inhibitory activity against mushroom tyrosinase. Two of the compounds 6a and 6b among the series 6a?j were found to be highly potent tyrosinase inhibitors with IC50 values of 10.09 ± 1.03 and 6.23 ± 0.85 μM, respectively, which were even higher than that of the reference inhibitor kojic acid (IC50 = 16.6 ± 2.8 μM). Compounds 6e and 6f with IC50 values of 20.27 ± 2.78 and 26.02 ± 4.14 μM, respectively, were comparable to the reference inhibitor, and the remaining compounds had a moderate inhibitory activity against mushroom tyrosinase. The most potent compounds (6a, 6b) were used in the kinetic and optical analyses. The inhibition kinetics analyzed with Lineweaver?Burk plots revealed that both compounds 6a and 6b were non-competitive inhibitors of tyrosinase with inhibition constant values of 0.023 and 0.022 mM, respectively.
|
|
|
KEYWORD
|
|
|
Tyrosinase, Inhibitors, Non-competitive, Kinetic analysis
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|