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.
在本研究中,通过微波辅助的
亚胺形成合成了一系列十种
三氮唑希夫碱衍
生物6a–j,这些衍
生物是通过将取代
氨基
三氮唑5与不同取代醛反应而得到的。所有合成的化合物对蘑菇
酪氨酸酶的抑制活性进行了评估。在6a–j系列中,化合物6a和6b被发现是高度有效的
酪氨酸酶抑制剂,IC50值分别为10.09 ± 1.03和6.23 ± 0.85 µM,甚至高于参考
抑制剂曲酸(IC50 = 16.6 ± 2.8 µM)。化合物6e和6f的IC50值分别为20.27 ± 2.78和26.02 ± 4.14 µM,表现出与参考
抑制剂相当的抑制活性,其余化合物对蘑菇
酪氨酸酶具有中等抑制活性。最有效的化合物(6a,6b)被用于动力学和光学分析。通过Lineweaver–Burk图分析的抑制动力学显示,化合物6a和6b都是
酪氨酸酶的非竞争性
抑制剂,抑制常数值分别为0.023和0.022 mM。