Affiliation:
1. Misr University for Science and Technology
2. National Research Centre
Abstract
Abstract
Aiming to develop novel anticonvulsant agents a new series of novel cycloalkanecarboxamide parabanic acid hybrids series 8, 9 and 10 possessing the essential structure requirements for anticonvulsant activity was synthesized starting from cycloalkanones. All final target compounds were primary screened for chemically and electrically induced seizures using pentylenetetrazole “scPTZ” and maximal electroshock seizure “MES” models. In phase I anticonvulsant evaluation compounds 8b and 10b exhibited the highest potency among all the target compounds with 100% protection towards chemically induced seizures. Results of phase II anticonvulsant screening showed that compounds 8b and 10b are more potent than standard drug ethosuximide by about 11 and 9 fold, respectively. Regarding MES test, compounds 8b and 9a-d exhibited 100% protection with ED50 values ranged between 0.107–0.177 mmol/Kg. All final compounds did not display any signs of motor impairment in the neurotoxicity screening test. Also, compounds 8a, 9a-d and 10b were devoid of hepatotoxicity as shown by measurement of serum levels of liver enzymes, albumin as well as total protein. Moreover, the cyclohexyl derivative 10b produced a significant increase of Gamma-aminobutyric acid “GABA” brain’s content of mice compared to control group confirmed its GABAergic modulating activity. Molecular docking, physicochemical and pharmacokinetic properties were carried out for all compounds as well. These outcomes support that cycloalkanecarboxamide parabanic acid hybrid is a promising scaffold to pave the way towards further development of novel class of antiepileptic drugs.
Publisher
Research Square Platform LLC
Reference44 articles.
1. Recent progress of 1, 3, 4-oxadiazoles as anticonvulsants: Future horizons;Nazar S;Arch Pharm,2020
2. Synthesis and radioligand-binding assay of 2, 5‐disubstituted thiadiazoles and evaluation of their anticonvulsant activities;Toolabi M;Arch Pharm,2020
3. Synthesis, in silico, in vitro and in vivo evaluations of isatin aroylhydrazones as highly potent anticonvulsant agents;Emami S;Bioorg Chem,2021
4. (Epilepsy: World Health Organization ; [updated 2 February 2022; cited 2022 12 December] Available from: https://www.who.int/news-room/fact-sheets/detail/epilepsy
5. Design, synthesis, anticonvulsant activity and structure-activity relationships of novel 7-Azaindole derivatives;Meng Q;Bioorg Chem,2023