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Synthesis and Biological Evaluation of 3‐thiazolocoumarinyl Schiff‐base Derivatives as Cholinesterase Inhibitors
Author(s) -
Raza Rabia,
Saeed Aamer,
Arif Mubeen,
Mahmood Shamsul,
Muddassar Muhammad,
Raza Ahsan,
Iqbal Jamshed
Publication year - 2012
Publication title -
chemical biology and drug design
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.59
H-Index - 77
eISSN - 1747-0285
pISSN - 1747-0277
DOI - 10.1111/j.1747-0285.2012.01435.x
Subject(s) - butyrylcholinesterase , acetylcholinesterase , electrophorus , cholinesterase , chemistry , stereochemistry , docking (animal) , schiff base , enzyme , biochemistry , aché , pharmacology , torpedo , biology , receptor , acetylcholine receptor , medicine , nursing
On the basis of the observed biological activity of the coumarins, a new set of 3‐thiazolocoumarinyl Schiff‐base derivatives with chlorine, hydroxy and methoxy functional group substitutions were designed and synthesized. These compounds were tested against acetylcholinesterase from Electrophorus electricus and butyrylcholinesterase from horse serum and their structure–activity relationship was established. Studies revealed them as the potential inhibitors of cholinesterase (acetylcholinesterase and butyrylcholinesterase). The 3f was found to be most potent against acetylcholinesterase with K i value of 1.05 ± 0.3 μ m and 3l showed excellent inhibitory action against butyrylcholinesterase with K i value of 0.041 ± 0.002 μ m . The synthesized compounds were also docked into the active sites of the homology models of acetylcholinesterase and butyrylcholinesterase to predict the binding modes of these compounds. It was predicted that most of the compounds have similar binding modes with reasonable binding affinities. Our docking studies have also shown that these synthesized compounds have better interaction patterns with butyrylcholinesterase over acetylcholinesterase. The main objective of the study was to develop new potent and selective compounds, which might be further optimized to prevent the progression of the Alzheimer’s disease and could provide symptomatic treatment.