Tyrosinase (EC 1.14.18.1) is implicated in melanin production in various organisms. There is a growing body of evidence suggesting that the overproduction of melanin might be related to several skin pigmentation disorders as well as neurodegenerative processes in Parkinson’s disease. Based on this consideration, the development of tyrosinase inhibitors represents a new challenge to identify new agents in pharmaceutical and cosmetic applications. With the goal of identifying tyrosinase inhibitors from a synthetic source, we employed a cheap and facile preliminary assay using tyrosinase from Agaricus bisporus (AbTYR). We have previously demonstrated that the 4-fluorobenzyl moiety might be effective in interactions with the catalytic site of AbTYR; moreover, the additional chlorine atom exerted beneficial effects in enhancing inhibitory activity. Therefore, we planned the synthesis of new small compounds in which we incorporated the 3-chloro-4-fluorophenyl fragment into distinct chemotypes that revealed the ability to establish profitable contact with the AbTYR catalytic site. Our results confirmed that the presence of this fragment is an important structural feature to improve the AbTYR inhibition in these new chemotypes as well. Furthermore, docking analysis supported the best activity of the selected studied compounds, possessing higher potency when compared with reference compounds.
酪氨酸酶(EC 1.14.18.1)与多种生物的黑色素生成有关。越来越多的证据表明,黑色素的过度生成可能与多种皮肤色素沉着疾病以及帕金森病的神经退行性过程有关。基于这种考虑,酪氨酸酶抑制剂的开发是一项新的挑战,需要找到新的药物和化妆品应用。为了从合成来源中鉴定酪氨酸酶抑制剂,我们利用双孢蘑菇中的酪氨酸酶(AbTYR)进行了廉价而简便的初步测定。我们之前已经证明,4-氟苄基可能会有效地与 AbTYR 的催化位点相互作用;此外,额外的氯原子在增强抑制活性方面也有好处。因此,我们计划合成新的小化合物,将 3-氯-4-氟苯基片段加入到不同的化学类型中,这些化学类型显示了与 AbTYR 催化位点建立有利接触的能力。我们的研究结果证实,在这些新的化学型中,该片段的存在也是改善 AbTYR 抑制作用的一个重要结构特征。此外,对接分析支持所选化合物具有最佳活性,与参考化合物相比具有更高的效力。