animals. A class of novel N-aryl-N′-substituted phenylthiourea derivatives (3a–i, 6a–k) were designed, synthesized and their inhibitory effects on the diphenolase activity of mushroom tyrosinase were evaluated. The results showed some 4,5,6,7-tetrahydro-2-[[(phenylamino)thioxomethyl]amino]-benzo[b]thiophene-3-carboxylic acid derivatives (3a–i) exhibited moderate inhibitory potency on diphenolase activity
酪氨酸酶是植物和动物体内
黑色素生成过程中的关键酶。设计,合成了一类新型的N-芳基-N'-取代的苯
硫脲衍
生物(3a – i,6a – k),并评价了它们对蘑菇
酪氨酸酶双
酚酶活性的抑制作用。结果表明,某些4,5,6,7-四氢-2-[[[((苯基
氨基)
硫代甲基]
氨基]-苯并[ b ]
噻吩-3-
羧酸衍
生物(3a – i)对中和
酚的双
酚酶活性具有中等抑制作用。
酪氨酸酶。当4,5,6,7-四氢苯并[ b用2-(1,3,4-
噻二唑-2-基)
硫代乙酸代替]
噻吩-3-
羧酸,化合物(6a - k)对
酪氨酸酶的抑制作用明显提高。特别是化合物6h(IC 50 = 6.13μM)的抑制活性明显高于
曲酸(IC 50 = 33.3μM)。此外,对抑制机理的分析表明,化合物6h可能起非竞争性
抑制剂的作用。