Arylcyanoacrylamides as inhibitors of the Dengue and West Nile virus proteases
摘要:
The 3-aryl-2-cyanoacrylamide scaffold was designed as core pharmacophore for inhibitors of the Dengue and West Nile virus serine proteases (NS2B-NS3). A total of 86 analogs was prepared to study the structure-activity relationships in detail. Thereby, it turned out that the electron density of the aryl moiety and the central double bond have a crucial influence on the activity of the compounds, whereas the influence of substituents of the amide residue is less relevant. The para-hydroxy substituted analog was found to be the most potent inhibitor in this series with a K(i)-value of 35.7 mu M at the Dengue and 44.6 mu M at the West Nile virus protease. The aprotinin competition assay demonstrates a direct interaction of the inhibitor molecule with active centre of the Dengue virus protease. The target selectivity was studied in a counterscreen with thrombin and found to be 2.8:1 in favor of DEN protease and 2.3:1 in favor of WNV protease, respectively. (C) 2011 Elsevier Ltd. All rights reserved.
Arylcyanoacrylamides as inhibitors of the Dengue and West Nile virus proteases
摘要:
The 3-aryl-2-cyanoacrylamide scaffold was designed as core pharmacophore for inhibitors of the Dengue and West Nile virus serine proteases (NS2B-NS3). A total of 86 analogs was prepared to study the structure-activity relationships in detail. Thereby, it turned out that the electron density of the aryl moiety and the central double bond have a crucial influence on the activity of the compounds, whereas the influence of substituents of the amide residue is less relevant. The para-hydroxy substituted analog was found to be the most potent inhibitor in this series with a K(i)-value of 35.7 mu M at the Dengue and 44.6 mu M at the West Nile virus protease. The aprotinin competition assay demonstrates a direct interaction of the inhibitor molecule with active centre of the Dengue virus protease. The target selectivity was studied in a counterscreen with thrombin and found to be 2.8:1 in favor of DEN protease and 2.3:1 in favor of WNV protease, respectively. (C) 2011 Elsevier Ltd. All rights reserved.
Triflic acid-catalyzed metal-free synthesis of (<i>E</i>)-2-cyanoacrylamides and 3-substituted azetidine-2,4-diones
作者:Bapurao D. Rupanwar、Santosh S. Chavan、Anil M. Shelke、Gurunath M. Suryavanshi
DOI:10.1039/c7nj05169g
日期:——
efficient synthesis of biologically active (E)-2-cyanoacrylamides and 3-substituted azetidine-2,4-diones has been reported with 64–94% yields under metal-free conditions. The reaction proceeds through sequential Knoevenagel condensation/stereoselective in situ monohydration of nitrile or C–N cyclization protocol in one-pot. The attractive features of this tandem process are moderate reaction conditions
(E)-2-Cyano-3-(substituted phenyl)acrylamide analogs as potent inhibitors of tyrosinase: A linear β-phenyl-α,β-unsaturated carbonyl scaffold
作者:Sujin Son、Haewon Kim、Hwi Young Yun、Do Hyun Kim、Sultan Ullah、Seong Jin Kim、Yeon-Jeong Kim、Min-Soo Kim、Jin-Wook Yoo、Pusoon Chun、Hyung Ryong Moon
DOI:10.1016/j.bmc.2015.11.015
日期:2015.12
In this study, we synthesized (E)-2-cyano-3-(substituted phenyl) acrylamide (CPA) derivatives which possess a linear beta-phenyl-alpha,beta-unsaturated carbonyl scaffold and examined their inhibitory activities against tyrosinase. CPA analogs exerted inhibitory activity against mushroom tyrosinase. Results from the docking simulation indicated that CPA2 could bind directly to the active site of mushroom tyrosinase and the binding affinity of CPA2 for tyrosinase might be higher than that of kojic acid, a well-known potent tyrosinase inhibitor. In B16F10 cells, CPA2 significantly suppressed tyrosinase activity and melanogenesis in a dose-dependent manner. At the concentration of 25 mu M, CPA2 exhibited tyrosinase inhibitory activity comparable to that of kojic acid with no cytotoxic effect. Results from the present study suggest that CPA2 bearing a linear beta-phenyl-alpha,beta-unsaturated carbonyl scaffold may be the potential candidate for treatment of diseases associated with hyperpigmentation and that a linear beta-phenyl-alpha,beta-unsaturated carbonyl scaffold might be closely related to potent tyrosinase inhibition. (c) 2015 Elsevier Ltd. All rights reserved.
US29467
申请人:——
公开号:——
公开(公告)日:——
USRE29467E
申请人:——
公开号:USRE29467E
公开(公告)日:1977-11-08
Arylcyanoacrylamides as inhibitors of the Dengue and West Nile virus proteases
作者:Christoph Nitsche、Christian Steuer、Christian D. Klein
DOI:10.1016/j.bmc.2011.10.061
日期:2011.12
The 3-aryl-2-cyanoacrylamide scaffold was designed as core pharmacophore for inhibitors of the Dengue and West Nile virus serine proteases (NS2B-NS3). A total of 86 analogs was prepared to study the structure-activity relationships in detail. Thereby, it turned out that the electron density of the aryl moiety and the central double bond have a crucial influence on the activity of the compounds, whereas the influence of substituents of the amide residue is less relevant. The para-hydroxy substituted analog was found to be the most potent inhibitor in this series with a K(i)-value of 35.7 mu M at the Dengue and 44.6 mu M at the West Nile virus protease. The aprotinin competition assay demonstrates a direct interaction of the inhibitor molecule with active centre of the Dengue virus protease. The target selectivity was studied in a counterscreen with thrombin and found to be 2.8:1 in favor of DEN protease and 2.3:1 in favor of WNV protease, respectively. (C) 2011 Elsevier Ltd. All rights reserved.