Preparation, in vitro screening and molecular modelling of symmetrical bis-quinolinium cholinesterase inhibitors--implications for early myasthenia gravis treatment.

Marketa Komloova, Kamil Musilek, Anna Horova, Ondrej Holas, Vlastimil Dohnal, Frank Gunn-Moore, Kamil Kuca

Charles University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry and Drug Control, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic.

Bioorganic & medicinal chemistry letters 2011 Apr 15

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This paper describes the preparation and in vitro evaluation of 18 newly prepared bis-quinolinium inhibitors on human recombinant acetylcholinesterase (AChE) and human plasmatic butyrylcholinesterase (BChE). Their inhibitory (IC(50)) and was compared to the chosen standards ambenonium dichloride, edrophonium chloride, BW284c51 and ethopropazine hydrochloride. One novel compound was found to be a promising inhibitor of hAChE (in nM range) and was better than edrophonium chloride or BW284c51, but was worse than ambenonium chloride. This compound also showed selectivity towards hAChE and it was confirmed as a non-competitive inhibitor of hAChE by kinetic analysis. A molecular modelling study further confirmed its binding to the peripheral active site of hAChE via apparent π-π or π-cationic interactions. Copyright © 2011 Elsevier Ltd. All rights reserved.

Citation

Marketa Komloova, Kamil Musilek, Anna Horova, Ondrej Holas, Vlastimil Dohnal, Frank Gunn-Moore, Kamil Kuca. Preparation, in vitro screening and molecular modelling of symmetrical bis-quinolinium cholinesterase inhibitors--implications for early myasthenia gravis treatment. Bioorganic & medicinal chemistry letters. 2011 Apr 15;21(8):2505-9