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Synthesis, molecular docking and molecular dynamics studies of novel tacrine-carbamate derivatives as potent cholinesterase inhibitors. 2021

Ozge Ozten, and Belma Zengin Kurt, and Fatih Sonmez, and Berna Dogan, and Serdar Durdagi
Sakarya University, Institute of Natural Sciences, 54055 Sakarya, Turkey.

In the present study, new tacrine derivatives containing carbamate group were synthesized and their acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) inhibition activities were evaluated. All synthesized compounds inhibited both cholinesterases at nanomolar level. Among them, ((1,2,3,4-tetrahydroacridin-9-yl)amino)ethyl(3-nitrophenyl) carbamate (6k) showed the best inhibitor activity against AChE and BuChE with IC50 value of 22.15 nM and 16.96 nM, respectively. The calculated selectivity index revealed that the synthesized compounds (exclude 6l) have stronger inhibitory activity against BuChE than AChE. The most selective compound was 2-((1,2,3,4-tetrahydroacridin-9-yl)amino)ethyl(4-methoxyphenyl)-carbamate (6b) with the selectivity index of 0.12. Molecular modeling approaches were employed to understand the interaction between the synthesized compounds and proteins. As carbamate derivatives can act as pseudo-irreversible inhibitors of AChE and BuChE, covalent docking approaches was applied to determine the binding modes of novel compounds at binding sites of cholinesterase enzymes.

UI MeSH Term Description Entries
D008958 Models, Molecular Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures. Molecular Models,Model, Molecular,Molecular Model
D002091 Butyrylcholinesterase An aspect of cholinesterase (EC 3.1.1.8). Pseudocholinesterase,Benzoylcholinesterase,Butyrylthiocholinesterase
D002219 Carbamates Derivatives of carbamic acid, H2NC( Carbamate,Aminoformic Acids,Carbamic Acids,Acids, Aminoformic,Acids, Carbamic
D002800 Cholinesterase Inhibitors Drugs that inhibit cholinesterases. The neurotransmitter ACETYLCHOLINE is rapidly hydrolyzed, and thereby inactivated, by cholinesterases. When cholinesterases are inhibited, the action of endogenously released acetylcholine at cholinergic synapses is potentiated. Cholinesterase inhibitors are widely used clinically for their potentiation of cholinergic inputs to the gastrointestinal tract and urinary bladder, the eye, and skeletal muscles; they are also used for their effects on the heart and the central nervous system. Acetylcholinesterase Inhibitor,Acetylcholinesterase Inhibitors,Anti-Cholinesterase,Anticholinesterase,Anticholinesterase Agent,Anticholinesterase Agents,Anticholinesterase Drug,Cholinesterase Inhibitor,Anti-Cholinesterases,Anticholinesterase Drugs,Anticholinesterases,Cholinesterase Inhibitors, Irreversible,Cholinesterase Inhibitors, Reversible,Agent, Anticholinesterase,Agents, Anticholinesterase,Anti Cholinesterase,Anti Cholinesterases,Drug, Anticholinesterase,Drugs, Anticholinesterase,Inhibitor, Acetylcholinesterase,Inhibitor, Cholinesterase,Inhibitors, Acetylcholinesterase,Inhibitors, Cholinesterase,Inhibitors, Irreversible Cholinesterase,Inhibitors, Reversible Cholinesterase,Irreversible Cholinesterase Inhibitors,Reversible Cholinesterase Inhibitors
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000110 Acetylcholinesterase An enzyme that catalyzes the hydrolysis of ACETYLCHOLINE to CHOLINE and acetate. In the CNS, this enzyme plays a role in the function of peripheral neuromuscular junctions. EC 3.1.1.7. Acetylcholine Hydrolase,Acetylthiocholinesterase,Hydrolase, Acetylcholine
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D013619 Tacrine A cholinesterase inhibitor that crosses the blood-brain barrier. Tacrine has been used to counter the effects of muscle relaxants, as a respiratory stimulant, and in the treatment of Alzheimer's disease and other central nervous system disorders. Tetrahydroaminoacridine,1,2,3,4-Tetrahydro-9-acridinamine,1,2,3,4-Tetrahydroaminoacridine,9-Amino-1,2,3,4-Tetrahydroacridine,Cognex,Romotal,THA,Tacrine Hydrochloride,Tenakrin
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular

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