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Synthesis, biological evaluation and molecular modeling studies of substituted N-benzyl-2-phenylethanamines as cholinesterase inhibitors

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Abstract

In this work, we report the synthesis of a series of derivatives of N-benzyl-2-phenylethanamine which is the framework of norbelladine, the natural common precursor of the Amaryllidaceae alkaloids. These compounds were assessed in the inhibition of both AChE and BChE which are the enzymes responsible for the breakdown of acetylcholine and hence they constitute targets in the palliative treatment of Alzheimer's disease. In particular, brominated derivatives exhibited the lowest IC50 values against AChE. Interestingly, the presence of iodine in one of the aromatic rings highly increased the inhibition of BChE compared to its analogues, with an IC50 value similar to that of galantamine, which is the reference compound currently used in the treatment of AD. A possible mechanism of action for these compounds was determined by molecular modeling studies using combined techniques of docking and molecular dynamics simulations.

Graphical abstract: Synthesis, biological evaluation and molecular modeling studies of substituted N-benzyl-2-phenylethanamines as cholinesterase inhibitors

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Supplementary files

Article information


Submitted
16 Jan 2020
Accepted
20 May 2020
First published
21 May 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Synthesis, biological evaluation and molecular modeling studies of substituted N-benzyl-2-phenylethanamines as cholinesterase inhibitors

F. Carmona-Viglianco, D. Zaragoza-Puchol, O. Parravicini, A. Garro, R. D. Enriz, G. E. Feresin, M. Kurina-Sanz and A. A. Orden, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ00282H

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