title: Design, synthesis and biological evaluation of new 2-benzoxazolinone derivatives as potential cholinesterase inhibitors for therapy of alzheimer's disease.
abstract: Currently acetylcholinesterase inhibitor (AChEI) therapy is one of the most frequently used methods in the treatment of Alzheimer's disease; tacrine, donepezil, rivastygmine and galantamine are applied in different stages of AD. In the present study, we propose a new series of 2-benzoxazolinone derivatives as potential cholinesterase inhibitors. These compounds were synthesized by condensation of 6-chloro acetyl-2-benzoxa zolinone with the corresponding amine and evaluated as acetylcholinesterase inhibitors using the colorimetric Ellman's method. Selectivity and the IC50 values were determined for the received derivatives. All tested compounds exhibited the inhibitory activity towards acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Compound 3e showed stronger activity than the standard tacrine, and compound 3a showed activity similar to that of tacrine for AChE. Compounds 3a, 3b, 3c, and 3e showed stronger activity than the standard donepezil towards the inhibition of BChE, and the compound 3e showed stronger activity than donepezil towards AChE.
authors.affiliation: Department of Pharmaceutical Chemistry and Drug Analysis, Medical University of Lodz, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Szymański
authors.forename: A
authors.initials: A
authors.lastname: Janik
authors.forename: E
authors.initials: E
authors.lastname: Zurek
authors.forename: E
authors.initials: E
authors.lastname: Mikiciuk-Olasik
mesh_terms: D000110:Acetylcholinesterase / Q000378:metabolism; D000544:Alzheimer Disease / Q000188:drug therapy*; D001583:Benzoxazoles / Q000138:chemical synthesis* / Q000494:pharmacology*; D002091:Butyrylcholinesterase / Q000378:metabolism; D002800:Cholinesterase Inhibitors / Q000138:chemical synthesis* / Q000494:pharmacology*; D002855:Chromatography, Thin Layer; D003124:Colorimetry; D015195:Drug Design; D007202:Indicators and Reagents; D007700:Kinetics; D018697:Nootropic Agents / Q000138:chemical synthesis* / Q000494:pharmacology*
chemical_list: D001583:Benzoxazoles; D002800:Cholinesterase Inhibitors; D007202:Indicators and Reagents; D018697:Nootropic Agents; D000110:Acetylcholinesterase; D002091:Butyrylcholinesterase