New semicarbazones as gorge-spanning ligands of acetylcholinesterase and potential new drugs against Alzheimer’s disease: Synthesis, molecular modeling, NMR, and biological evaluation
摘要:
Two new compounds (E)-2-(5,7-dibromo-3,3-dimethyl-3,4-dihydroacridin-1(2H)-ylidene)hydrazinecarbothiomide (3) and (E)-2-(5,7-dibromo-3,3-dimethyl-3,4-dhihydroacridin-1(2H)-ylidene) hydrazinecarboxamide (4) were synthesized and evaluated for their anticholinesterase activities. In vitro tests performed by NMR and Ellman's tests, pointed to a mixed kinetic mechanism for the inhibition of acetylcholinesterase (AChE). This result was corroborated through further docking and molecular dynamics studies, suggesting that the new compounds can work as gorge-spanning ligands by interacting with two different binding sites inside AChE. Also, in silico toxicity evaluation suggested that these new compounds can be less toxic than tacrine.
A new mild enzymatic methodology for synthesizing quinolinederivatives by Friedländercondensation was developed. A series of quinolinederivatives were synthesized and characterized by 1H NMR, 13C-NMR, IR and MS. The probable enzymatic mechanism was proposed. It provides a novel method to prepare quinoline derivatives.Graphical Abstract
Rapid and efficient synthesis of poly-substituted quinolines assisted by p-toluene sulphonic acid under solvent-free conditions: comparative study of microwave irradiation versus conventional heating
作者:Cheng-Sheng Jia、Ze Zhang、Shu-Jiang Tu、Guan-Wu Wang
DOI:10.1039/b513721g
日期:——
A rapid and efficient method for the preparation of various poly-substituted quinolines has been developed through the Friedlander condensation of 2-aminoarylketone or 2-aminoarylaldehyde with carbonyl compounds in the presence of p-toluene sulphonic acid, which was achieved by both microwaveirradiation and conventional heating under solvent-free conditions.
A new guanylhydrazone derivative as a potential acetylcholinesterase inhibitor for Alzheimer's disease: synthesis, molecular docking, biological evaluation and kinetic studies by nuclear magnetic resonance
作者:Denise Cristian Ferreira Neto、Marcelle de Souza Ferreira、Elaine da Conceição Petronilho、Josélia Alencar Lima、Sirlene Oliveira Francisco de Azeredo、Juliana de Oliveira Carneiro Brum、Claudia Jorge do Nascimento、José Daniel Figueroa Villar
DOI:10.1039/c7ra04180b
日期:——
is associated with the memory loss. In this work, a new guanylhydrazone was designed and synthesized as an AChE inhibitor. This new compound was compared to tacrine and other guanylhydrazones. All of them were studied by molecular docking and tested in vitro as AChE inhibitors by Ellman's test and Fig-NMR method. A high inhibition of AChE by the new compound was observed, showing that this compound has
New semicarbazones as gorge-spanning ligands of acetylcholinesterase and potential new drugs against Alzheimer’s disease: Synthesis, molecular modeling, NMR, and biological evaluation
作者:Denise Cristian Ferreira Neto、Josélia Alencar Lima、Joyce Sobreiro Francisco Diz de Almeida、Tanos Celmar Costa França、Claudia Jorge do Nascimento、José Daniel Figueroa Villar
DOI:10.1080/07391102.2017.1407676
日期:2018.11.18
Two new compounds (E)-2-(5,7-dibromo-3,3-dimethyl-3,4-dihydroacridin-1(2H)-ylidene)hydrazinecarbothiomide (3) and (E)-2-(5,7-dibromo-3,3-dimethyl-3,4-dhihydroacridin-1(2H)-ylidene) hydrazinecarboxamide (4) were synthesized and evaluated for their anticholinesterase activities. In vitro tests performed by NMR and Ellman's tests, pointed to a mixed kinetic mechanism for the inhibition of acetylcholinesterase (AChE). This result was corroborated through further docking and molecular dynamics studies, suggesting that the new compounds can work as gorge-spanning ligands by interacting with two different binding sites inside AChE. Also, in silico toxicity evaluation suggested that these new compounds can be less toxic than tacrine.