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Moussavi N, van der Ent W, Diallo D, Sanogo R, Malterud KE, Esguerra CV, Wangensteen H. Inhibition of Seizure-Like Paroxysms and Toxicity Effects of Securidaca longepedunculata Extracts and Constituents in Zebrafish Danio rerio. ACS Chem Neurosci 2024; 15:617-628. [PMID: 38270158 PMCID: PMC10853935 DOI: 10.1021/acschemneuro.3c00642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/08/2024] [Accepted: 01/15/2024] [Indexed: 01/26/2024] Open
Abstract
Plants used in traditional medicine in the management of epilepsy could potentially yield novel drug compounds with antiepileptic properties. The medicinal plant Securidaca longepedunculata is widely used in traditional medicine in the African continent, and epilepsy is among several indications. Limited knowledge is available on its toxicity and medicinal effects, such as anticonvulsant activities. This study explores the potential in vivo inhibition of seizure-like paroxysms and toxicity effects of dichloromethane (DCM) and ethanol (EtOH) extracts, as well as isolated xanthones and benzoates of S. longepedunculata. Ten phenolic compounds were isolated from the DCM extract. All of the substances were identified by nuclear magnetic resonance spectroscopy. Assays for toxicity and inhibition of pentylenetetrazole (PTZ)-induced seizure-like paroxysms were performed in zebrafish larvae. Among the compounds assessed in the assay for maximum tolerated concentration (MTC), benzyl-2-hydroxy-6-methoxy-benzoate (MTC 12.5 μM), 4,8-dihydroxy-1,2,3,5,6-pentamethoxyxanthone (MTC 25 μM), and 1,7-dihydroxy-4-methoxyxanthone (MTC 6.25 μM) were the most toxic. The DCM extract, 1,7-dihydroxy-4-methoxyxanthone and 2-hydroxy-1,7-dimethoxyxanthone displayed the most significant inhibition of paroxysms by altering the locomotor behavior in GABAA receptor antagonist, PTZ, which induced seizures in larval zebrafish. The EtOH extract, benzyl benzoate, and benzyl-2-hydroxy-6-methoxy-benzoate unexpectedly increased locomotor activity in treated larval zebrafish and decreased locomotor activity in nontreated larval zebrafish, seemingly due to paradoxical excitation. The results reveal promising medicinal activities of this plant, contributing to our understanding of its use as an antiepileptic drug. It also shows us the presence of potentially new lead compounds for future drug development.
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Affiliation(s)
- Nastaran Moussavi
- Section
for Pharmaceutical Chemistry, Department of Pharmacy, University of Oslo, P.O. Box 1068, Oslo 0316, Norway
| | - Wietske van der Ent
- NCMM,
Chemical Neuroscience Group, Centre for Molecular Medicine Norway,
Faculty of Medicine, University of Oslo, Oslo 0349, Norway
| | - Drissa Diallo
- Department
of Traditional Medicine, National Institute
of Public Health, PB, Bamako 1746, Mali
- Faculty
of Pharmacy, University of Sciences, Techniques
and Technologies of Bamako (USTTB), Bamako 1746, Mali
| | - Rokia Sanogo
- Department
of Traditional Medicine, National Institute
of Public Health, PB, Bamako 1746, Mali
- Faculty
of Pharmacy, University of Sciences, Techniques
and Technologies of Bamako (USTTB), Bamako 1746, Mali
| | - Karl E. Malterud
- Section
for Pharmaceutical Chemistry, Department of Pharmacy, University of Oslo, P.O. Box 1068, Oslo 0316, Norway
| | - Camila V. Esguerra
- Section
for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, P.O.
Box 1068, Oslo 0316, Norway
| | - Helle Wangensteen
- Section
for Pharmaceutical Chemistry, Department of Pharmacy, University of Oslo, P.O. Box 1068, Oslo 0316, Norway
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Ilieva ED, Petrova GP, Nikolova RD, Vayssilov GN. Computational elucidation of the reaction mechanism for synthesis of pyrrolidinedione derivatives via Nef-type rearrangement – cyclization reaction. RSC Adv 2018; 8:3178-3188. [PMID: 35541181 PMCID: PMC9077586 DOI: 10.1039/c7ra11908a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 01/08/2018] [Indexed: 02/03/2023] Open
Abstract
This paper reports a quantum chemical study of all stages of a one-pot synthesis of pyrrolidinedione derivatives from nitromethane and coumarin, which includes Michael addition, migration of an oxygen atom (Nef-type rearrangement), and cyclization to a pyrrolidine ring. The energy barrier of deprotonated nitromethane addition to coumarin is 21.7 kJ mol−1, while the barrier of proton transfer from the methylene to the nitro group in the nitromethyl group is notably higher, 197.8 kJ mol−1. The second stage of the reaction, migration of an oxygen atom within the nitromethyl group, occurs with lowest energy barrier, 142.4 kJ mol−1, when it is assisted by an additional water molecule. The last stage – cyclization, passes with a very low energy barrier of 11.9 kJ mol−1 but the tautomerization of the nitrosohydroxymethyl group to the hydroxy-N-hydroxyiminomethyl, necessary for the process, has an energy barrier of 178.4 kJ mol−1. Analogous calculations for the same process with the ethyl ester of 3-coumarin-carboxylic acid as substrate show that the relative energies of the intermediates and transition states are by at most 10–16 kJ mol−1 more stable than the corresponding structures with coumarin. A quantum chemical study of all stages of pyrrolidinedione derivative synthesis from nitromethane and coumarin, which includes Michael addition, migration of an oxygen atom (Nef-type rearrangement), and cyclization to a pyrrolidine ring is reported.![]()
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Affiliation(s)
| | - Galina P. Petrova
- Faculty of Chemistry and Pharmacy
- University of Sofia
- 1126 Sofia
- Bulgaria
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QSAR model development for studying carbonic anhydrase inhibitors as anticonvulsant agents. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1617-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nikalje APG, Shaikh AN, Shaikh SI, Kalam Khan FA, Sangshetti JN, Shinde DB. Microwave assisted synthesis and docking study of N-(2-oxo-2-(4-oxo-2-substituted thiazolidin-3ylamino)ethyl)benzamide derivatives as anticonvulsant agents. Bioorg Med Chem Lett 2014; 24:5558-5562. [PMID: 25466174 DOI: 10.1016/j.bmcl.2014.11.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/03/2014] [Accepted: 11/05/2014] [Indexed: 11/15/2022]
Abstract
Herewith, we report the design and synthesis of a series of N-(2-oxo-2((4-oxo-2-substituted thiazolidin-3yl)amino)ethyl) benzamide derivatives 7(a-j) under microwave irradiation, based on four component pharmacophoric model to get structural prerequisite indispensable for anticonvulsant activity. The synthesized derivatives were investigated in maximal electroshock seizure (MES), subcutaneous pentylenetetrazole (sc-PTZ) induced seizure and neurotoxicity screening. All the test compounds were administered at a dose of 30, 100 and 300 mg/kg body weight at the time interval of 0.5 h and 4 h. The compounds were also evaluated for behavioral activity and toxicity study. The compound 7 h was found to be most active in MES model. The anticonvulsant screening data shows that 65% of the compounds were found active against MES model when compared to 35% sc-PTZ model. The computational parameter such as docking study, logP determination and ADME prediction were performed to exploit the results.
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Affiliation(s)
- Anna Pratima G Nikalje
- Department of Pharmaceutical Chemistry, Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Rauza Bagh, P.B. No. 33, Aurangabad 431001, M.S., India.
| | - Arfat N Shaikh
- Department of Pharmaceutical Chemistry, Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Rauza Bagh, P.B. No. 33, Aurangabad 431001, M.S., India
| | - Sameer I Shaikh
- Department of Pharmaceutical Chemistry, Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Rauza Bagh, P.B. No. 33, Aurangabad 431001, M.S., India
| | - Firoz A Kalam Khan
- Department of Pharmaceutical Chemistry, Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Rauza Bagh, P.B. No. 33, Aurangabad 431001, M.S., India
| | - Jaiprakash N Sangshetti
- Department of Pharmaceutical Chemistry, Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Rauza Bagh, P.B. No. 33, Aurangabad 431001, M.S., India
| | - Devanand B Shinde
- Department of Chemical Technology, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, M.S., India
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Evaluation of anticonvulsant, sedative, anxiolytic, and phytochemical profile of the methanol extract from the aerial parts of Swertia corymbosa (Griseb.) wight ex C.B. Clarke. BIOMED RESEARCH INTERNATIONAL 2014; 2014:542385. [PMID: 24877112 PMCID: PMC4022199 DOI: 10.1155/2014/542385] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/04/2014] [Accepted: 03/04/2014] [Indexed: 11/17/2022]
Abstract
The objective of the present study was to evaluate the anxiolytic, antidepressant, and anticonvulsant activity of the methanolic extract of Swertia corymbosa (SCMeOH). After acute toxicity test, oral treatment with SCMeOH at doses of 125, 250, and 500 mg/kg behavioral models of open field, elevated-plus-maze, actophotometer, rotarod, pentylenetetrazole, isoniazid, and maximal electroshock induced seizure models were utilized. In open field test, SCMeOH (125, 250, and 500 mg/kg) (P < 0.01, P < 0.001) increased the number of rearings. However, the number of central motor and ambulation (P < 0.01, P < 0.001) were reduced. Likewise, the number of entries and the time spent in open arm were increased while the number of locomotion was decreased (P < 0.001) in elevated-plus-maze and actophotometer test, respectively. SCMeOH (125-500 mg/kg) protected the mice against the pentylenetetrazole and isoniazid induced convulsions; it causes significant (P < 0.01 and P < 0.001) dose dependent increase in latency of convulsion. Treatment with SCMeOH reduced the duration of the tonic hind limb extension induced by electroshock. Two major compounds such as gentiopicroside and swertianin were analyzed by HPLC system.
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Dawidowski M, Turło J. Multicomponent synthesis and anticonvulsant activity of monocyclic 2,6-diketopiperazine derivatives. Med Chem Res 2013; 23:2007-2018. [PMID: 24587688 PMCID: PMC3918383 DOI: 10.1007/s00044-013-0800-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 09/19/2013] [Indexed: 01/05/2023]
Abstract
In this study, a series of diastereomerically pure monocyclic 2,6-diketopiperazine (2,6-DKP) derivatives were synthesized. The key synthetic step involved a multicomponent Ugi five-center, four-component reaction which was used to generate the convertible tert-butylamidoesters with both good yields and high diastereoselectivity toward the desired bioactive (S,S) absolute configuration. In subsequent steps, selective tertbutyl cleavage by use of BF3·CH3COOH and base-induced intramolecular cyclocondensation gave the final 2,6-DKP derivatives. The relative stereochemistry of the target molecules was confirmed by 1H NMR experiments. The compounds obtained were submitted to in vivo screening in animal models of epilepsy. Some of them displayed good activity in maximal electroshock seizure and 6 Hz tests.
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Affiliation(s)
- Maciej Dawidowski
- Department of Drug Technology and Pharmaceutical Biotechnology, Medical University of Warsaw, Banacha 1 Str., 02-097 Warsaw, Poland
| | - Jadwiga Turło
- Department of Drug Technology and Pharmaceutical Biotechnology, Medical University of Warsaw, Banacha 1 Str., 02-097 Warsaw, Poland
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Ilieva ED, Petkova NI, Nikolova RD. A new and efficient method for the synthesis of 3,4-disubstituted pyrrolidine-2,5-diones. Molecules 2012; 17:4936-49. [PMID: 22547316 PMCID: PMC6268139 DOI: 10.3390/molecules17054936] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 04/18/2012] [Accepted: 04/20/2012] [Indexed: 11/16/2022] Open
Abstract
A newly found reaction for the synthesis of 3,4-disubstituted 1-hydroxy-pyrrolidine-2,5-diones from 3-substituted coumarins and nitromethane has been elaborated. The reaction involved a simple and convenient experimental procedure. The applicability of the rearrangement reaction is determined.
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Affiliation(s)
| | | | - Rositca D. Nikolova
- Author to whom correspondence should be addressed; ; Tel.: +359-2-8161-392; Fax: +359-2-9625-438
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