Hydroxyl substituted benzoic acid/cinnamic acid derivatives: Tyrosinase inhibitory kinetics, anti-melanogenic activity and molecular docking studies
作者:Yasir Nazir、Aamer Saeed、Muhammad Rafiq、Samina Afzal、Anser Ali、Muhammad Latif、Johannes Zuegg、Waleed M. Hussein、Christian Fercher、Ross T. Barnard、Matthew A. Cooper、Mark A.T. Blaskovich、Zaman Ashraf、Zyta M. Ziora
DOI:10.1016/j.bmcl.2019.126722
日期:2020.1
enzymatic reaction with Ki values of 11 µM and 130 µM respectively. In silico docking studies with mushroom tyrosinase (PDB ID 2Y9X) predicted possible binding modes in the catalytic site for these active compounds. The phenolic para-hydroxy group of the most active compound 6c is predicted to interact with the catalytic site Cu++ ion. The methoxy part of this compound is predicted to form a hydrogen bond
酪氨酸酶的抑制是治疗色素沉着过度的既定策略。我们以前的发现表明,肉桂酸和苯甲酸支架可以是有效的酪氨酸酶抑制剂,且毒性低。这些前体的羟基取代的苯甲酸和肉桂酸部分被纳入新的化学型,表现出对蘑菇酪氨酸酶的体外抑制作用。活性最高的化合物((2-(3-甲氧基苯氧基)-2-氧乙基(E)-3-(4-羟基苯基)丙烯酸酯)6c抑制酪氨酸酶,IC 50为5.7 µM,而(2-(3-甲氧基苯氧基) )-2-氧代乙基2,4,4-二羟基苯甲酸酯)4d的IC 50为23.8 µM。相比之下,阳性对照曲酸显示出酪氨酸酶抑制作用,IC 50 = 16.7 µM。酶动力学分析表明,图6c和图4d中显示与所述第二酪氨酸酶酶促反应的非竞争性可逆抑制ķ我值分别为11微米,130微米。在与蘑菇酪氨酸酶(PDB ID 2Y9X)的计算机对接研究中,预测了这些活性化合物在催化位点的可能结合方式。预计活性最高的化合物6c的酚对羟基会与催化位点Cu