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Morpholine-modified thiosemicarbazones and thiazolidin-4-ones against Alzheimer’s key enzymes: From synthesis to inhibition       
Yazarlar (5)
Yeliz Demir
Ardahan Üniversitesi, Türkiye
Halil Senol
Bezmiâlem Vakıf Üniversitesi, Türkiye
Dr. Öğr. Üyesi Orhan ULUÇAY Dr. Öğr. Üyesi Orhan ULUÇAY
Kafkas Üniversitesi, Türkiye
S. Seyma Atesoglu
Bezmiâlem Vakıf Üniversitesi, Türkiye
Doç. Dr. Feyzi Sinan TOKALI Doç. Dr. Feyzi Sinan TOKALI
Kafkas Üniversitesi, Türkiye
Devamını Göster
Özet
Inhibition of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) is a key therapeutic approach in the management of Alzheimer's disease and other neurodegenerative disorders. A novel series of phenolic Mannich base-derived thiosemicarbazones and their cyclized thiazolidin-4-one analogs incorporating morpholine moieties were synthesized and characterized. Enzyme inhibition kinetics were evaluated against AChE and BChE, with cytotoxicity assessed on the BEAS-2B cell line. The most potent inhibitors were further examined via molecular docking, MM-GBSA binding free energy decomposition, and 250 ns molecular dynamics (MD) simulations to elucidate their binding mechanisms and stability. Compounds 12 (AChE, Ki = 32.83 ± 4.45 nM) and 6 (BChE, Ki = 30.13 ± 5.78 nM) exhibited the highest inhibitory activities without notable cytotoxicity at their effective concentrations. Kinetic analyses revealed competitive inhibition. Computational studies demonstrated that morpholine tertiary amine groups played a pivotal role in anchoring the ligands via persistent cation–π and hydrogen-bond interactions with key active site residues. In silico ADME analysis indicated that most of the synthesized compounds possess favorable pharmacokinetic properties. This combined in vitro and in silico study identifies compounds 6 and 12 as promising lead structures for cholinesterase inhibition, highlighting the critical contribution of tertiary amine moieties to binding affinity and selectivity.
Anahtar Kelimeler
AChE | Alzheimer's disease | BChE | Morpholine | Thiazolidin-4-one | Thiosemicarbazone
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Computational Biology and Chemistry
Dergi ISSN 1476-9271 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 01-2025
Cilt No 120
Sayı 1
Doi Numarası 10.1016/j.compbiolchem.2025.108683
Makale Linki https://doi.org/10.1016/j.compbiolchem.2025.108683