Design, synthesis and biological evaluation of hydroxy- or methoxy-substituted 5-benzylidene(thio) barbiturates as novel tyrosinase inhibitors
摘要:
Here a new class of hydroxy- or methoxy-substituted 5-benzylidene(thio)barbiturates were designed, synthesized and their inhibitory effects on the diphenolase activity of mushroom tyrosinase were evaluated. The results showed that several compounds had more potent tyrosinase inhibitory activities than the widely used tyrosinase inhibitor kojic acid (IC50 = 18.25 mu M). In particular, 3',4'-dihydroxylated 1e was found to be the most potent inhibitor with IC50 value of 1.52 mu M. The inhibition mechanism analysis revealed that the potential compounds 1e and 2e exhibited such inhibitory effects on tyrosinase by acting as the irreversible inhibitors. Structure-activity relationships' (SARs) analysis also suggested that further development of such compounds might be of interest. (C) 2014 Elsevier Ltd. All rights reserved.
Pigment dispersion liquid, curable composition, color filter, produced using the same, and solid state imaging device
申请人:FUJIFILM Corporation
公开号:EP2036957B1
公开(公告)日:2012-01-11
PIGMENT DISPERSION LIQUID, CURABLE COMPOSITION, COLOR FILTER PRODUCED USING THE SAME, AND SOLID STATE IMAGING DEVICE
申请人:SHIMADA Kazuto
公开号:US20090017273A1
公开(公告)日:2009-01-15
The present invention provides a pigment dispersion liquid including a pigment, a compound having a cyclic urea structure and having an acid group or a basic group, a dispersant, and a solvent. The pigment may be a pigment having a urea structure or an imide structure. The pigment may also be a pigment having a barbituric skeleton.
US8008364B2
申请人:——
公开号:US8008364B2
公开(公告)日:2011-08-30
US8252490B2
申请人:——
公开号:US8252490B2
公开(公告)日:2012-08-28
Design, synthesis and biological evaluation of hydroxy- or methoxy-substituted 5-benzylidene(thio) barbiturates as novel tyrosinase inhibitors
作者:Zhiyong Chen、Dachuan Cai、Dehai Mou、Qin Yan、Yifeng Sun、Wenlong Pan、Yiqian Wan、Huacan Song、Wei Yi
DOI:10.1016/j.bmc.2014.04.060
日期:2014.7
Here a new class of hydroxy- or methoxy-substituted 5-benzylidene(thio)barbiturates were designed, synthesized and their inhibitory effects on the diphenolase activity of mushroom tyrosinase were evaluated. The results showed that several compounds had more potent tyrosinase inhibitory activities than the widely used tyrosinase inhibitor kojic acid (IC50 = 18.25 mu M). In particular, 3',4'-dihydroxylated 1e was found to be the most potent inhibitor with IC50 value of 1.52 mu M. The inhibition mechanism analysis revealed that the potential compounds 1e and 2e exhibited such inhibitory effects on tyrosinase by acting as the irreversible inhibitors. Structure-activity relationships' (SARs) analysis also suggested that further development of such compounds might be of interest. (C) 2014 Elsevier Ltd. All rights reserved.