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Chalcones bearing nitrogen-containing heterocyclics as multi-targeted inhibitors: Design, synthesis, biological evaluation and molecular docking studies. 2023

Yusuf Sıcak, and Hüseyin Kekeçmuhammed, and Ayşegül Karaküçük-İyidoğan, and Tuğba Taşkın-Tok, and Emine Elçin Oruç-Emre, and Mehmet Öztürk
Department of Medicinal and Aromatic Plants, Köyceğiz Vocational School, Muğla Sıtkı Koçman University, Muğla, Turkey.

In this work, a series of chalcones (1a-d, 2a-d, 3a-d, 4a-d, and 5a-d) were designed and synthesized by Claisen-Schmidt condensation. Also, their chemical structures were elucidated using UV-Vis, FT IR, 1 H NMR, 13 C NMR, MS spectral data, and elemental analyses. Subsequently, the anticholinesterase, tyrosinase, urease inhibitory activities and antioxidant activities of all chalcones were evaluated. The inhibitory potential of all chalcones in terms of IC50 value was observed to range from 7.18 ± 0.43 to 29.62 ± 0.30 μM against BChE by comparing with Galantamine (IC50 46.06 ± 0.10 μM) as a reference drug. Also, compounds 2c, 3c, 4c, 4b, and 4d exhibited high anticholinesterase activity against both AChE and BChE enzymes. The tyrosinase inhibitory activity results revealed that three compounds (IC50 1.75 ± 0.83 μM for 2b, IC50 2.24 ± 0.11 μM for 3b, and IC50 1.90 ± 0.64 μM for 4b) displayed good inhibitory activity against tyrosinase compared with kojic acid (IC50 0.64 ± 0.12 μM). In addition, other different three chalcones (IC50 22.34 ± 0.25 μM for 2c, IC50 20.98 ± 0.08 μM for 3c, and IC50 18.26 ± 0.13 μM for 4c) showed excellent inhibitory activity against the urease by comparing with thiourea (IC50 23.08 ± 0.19 μM). Compounds 3c and 4c showed the best potency in all antioxidant activity tests. In light of these findings, the structure-activity relationship for compounds was also described. Furthermore, molecular modeling studies, including molecular docking, absorption, distribution, metabolism, excretion, and toxicity (ADMET), and pharmacophore analyses of compounds, gave important information about the interactions and drug-likeness properties. As a result, all chalcones exhibited suitable ADMET findings, predicting good oral bioavailability.

UI MeSH Term Description Entries
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
D000975 Antioxidants Naturally occurring or synthetic substances that inhibit or retard oxidation reactions. They counteract the damaging effects of oxidation in animal tissues. Anti-Oxidant,Antioxidant,Antioxidant Activity,Endogenous Antioxidant,Endogenous Antioxidants,Anti-Oxidant Effect,Anti-Oxidant Effects,Anti-Oxidants,Antioxidant Effect,Antioxidant Effects,Activity, Antioxidant,Anti Oxidant,Anti Oxidant Effect,Anti Oxidant Effects,Anti Oxidants,Antioxidant, Endogenous,Antioxidants, Endogenous
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
D014442 Monophenol Monooxygenase An enzyme of the oxidoreductase class that catalyzes the reaction between L-tyrosine, L-dopa, and oxygen to yield L-dopa, dopaquinone, and water. It is a copper protein that acts also on catechols, catalyzing some of the same reactions as CATECHOL OXIDASE. EC 1.14.18.1. Dopa Oxidase,Phenoloxidase,Tyrosinase,Cresolase,Phenol Oxidase,Phenoloxidase A,Phenoloxidase B,Monooxygenase, Monophenol,Oxidase, Dopa,Oxidase, Phenol
D014510 Urease An enzyme that catalyzes the conversion of urea and water to carbon dioxide and ammonia. EC 3.5.1.5. Phytourease,Urea Amidohydrolase,Amidohydrolase, Urea
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
D047188 Chalcones Derivatives of CHALCONE that are important intermediates in the formation of FLAVONOIDS with anti-fungal, anti-bacterial, anti-inflammatory, and anti-tumor properties. 1,3-Diphenyl-propanediones,1,3-Diphenyl-propenones,1,3-Diphenylpropanediones,1,3-Diphenylpropenones,Chalconoids,1,3 Diphenyl propanediones,1,3 Diphenyl propenones,1,3 Diphenylpropanediones,1,3 Diphenylpropenones
D062105 Molecular Docking Simulation A computer simulation technique that is used to model the interaction between two molecules. Typically the docking simulation measures the interactions of a small molecule or ligand with a part of a larger molecule such as a protein. Molecular Docking,Molecular Docking Simulations,Molecular Docking Analysis,Analysis, Molecular Docking,Docking Analysis, Molecular,Docking Simulation, Molecular,Docking, Molecular,Molecular Docking Analyses,Molecular Dockings,Simulation, Molecular Docking

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