Veratric acid derivatives containing benzylidene-hydrazine moieties as promising tyrosinase inhibitors and free radical scavengers
作者:Zahra Dehghani、Mahsima Khoshneviszadeh、Mehdi Khoshneviszadeh、Sara Ranjbar
DOI:10.1016/j.bmc.2019.04.016
日期:2019.6
revealed that compound D5 was a competitive tyrosinase inhibitor. Molecular docking study was carried out for the derivatives demonstrating tyrosinase inhibitory activity. D5 and D12 possessed the most negative estimated free energies of binding in mushroom tyrosinase active site. Therefore, D5 and D12 could be introduced as potent tyrosinase inhibitors that might be promising leads in medicine, cosmetics
酪氨酸酶在蔬菜和水果的黑色素生物合成和酶促褐变过程中起着至关重要的作用。合成了一系列含有不同取代基的亚苄基-肼部分的维甲酸衍生物,并评价了其对蘑菇酪氨酸酶的抑制作用和清除自由基的活性。结果表明,N'-(4-氯苄叉)-3,4-二甲氧基苯并肼(D5)和N'-(2,3-二羟基苄叉)-3,4-二甲氧基苯并肼(D12)显示出最高的酪氨酸酶抑制活性,IC50值分别为19.72±1.84和20.63±0.79μM,与曲酸的IC50值(19.08±1.21μM)相当。D12也是有效的自由基清除剂,EC50值为0.0097±0.0011 mM。D12的自由基清除活性与标准槲皮素相当。通过Lineweaver-Burk图分析的抑制动力学表明,化合物D5是竞争性酪氨酸酶抑制剂。对具有酪氨酸酶抑制活性的衍生物进行了分子对接研究。D5和D12在蘑菇酪氨酸酶活性位点具有最负的估计结合自由能。因此,可以将D5和D12用