Journal
BIOORGANIC & MEDICINAL CHEMISTRY
Volume 23, Issue 15, Pages 4567-4575Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2015.06.005
Keywords
Functionalized piperidines; Green synthesis; Acetylcholinesterase (AChE) inhibition; Pharmacophore; Docking; In silico
Funding
- CSIR, New Delhi [02(0110)/12/EMR-II]
- Department of Biotechnology, New Delhi
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A series of densely functionalized piperidine (FP) scaffolds was synthesized following a diastereoselective one-pot multicomponent protocol under eco-friendly conditions. The FPs were evaluated in vitro for their acetylcholinesterase (AChE) inhibitory activity, and in silico studies for all the target compounds were carried out using pharmacophore mapping, molecular docking and quantitative structure-activity relationship (QSAR) analysis in order to understand the structural features required for interaction with the AChE enzyme and the key active site residues involved in the intermolecular interactions. Halogenation, nitration or 3,4-methylenedixoxy-substitution at the phenyl ring attached to the 2- and 6-positions of 1,2,5,6-tetrahydropyridine nucleus in compounds 14-17, 19, 20, 24 and 26 greatly enhanced the AChE inhibitory activity. The docking analysis demonstrated that the inhibitors are well-fitted in the active sites. The in silico studies enlighten the future course of studies in modifying the scaffolds for better therapeutic efficacy against the deadly Alzheimer's disease. (C) 2015 Elsevier Ltd. All rights reserved.
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