The tyrosinase inhibitory effects of isoxazolone derivatives with a (Z)-β-phenyl-α, β-unsaturated carbonyl scaffold
作者:Su Jeong Kim、Jungho Yang、Sanggwon Lee、Chaeun Park、Dongwan Kang、Jinia Akter、Sultan Ullah、Yeon-Jeong Kim、Pusoon Chun、Hyung Ryong Moon
DOI:10.1016/j.bmc.2018.05.047
日期:2018.8
inhibitory activity against mushroom tyrosinase as potent as compounds containing the “(E)”-β-phenyl-α, β-unsaturated carbonyl scaffold. Compounds 1c and 1m showed greater inhibitory activity than kojic acid: IC50 = 32.08 ± 2.25 μM for 1c; IC50 = 14.62 ± 1.38 μM for 1m; and IC50 = 37.86 ± 2.21 μM for kojic acid. A kinetic study indicated that 1m inhibited tyrosinase in a competitive manner and that it probably
设计了十三个(Z)-4-(取代的亚苄基)-3-苯基异恶唑-5(4 H)-,以确认β-苯基-α,β-不饱和羰基支架的双键对酪氨酸酶抑制的几何作用活动。化合物1a - 1m全部具有(Z)-β-苯基-α,β-不饱和羰基骨架,是使用由异恶唑酮环形成和Knoevenagel缩合组成的串联反应,以及三种起始原料苯甲酰乙酸乙酯,羟胺和苯甲醛。一些化合物显示出对蘑菇酪氨酸酶的抑制活性,与含有“(E)”-β-苯基-α,β-不饱和羰基支架的化合物一样有效。化合物1c和1m表现出比曲酸更大的抑制活性:1c的IC 50 = 32.08±2.25μM ;1m时IC 50 = 14.62±1.38μM ; 曲酸的IC 50 = 37.86±2.21μM。动力学研究表明1m以竞争方式抑制酪氨酸酶,并且可能与该酶的活性位点结合。在计算机对接模拟中,与曲酸(-5.7 kcal / mol)相比,支持了1m(-7.6 kcal