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Abd-allah W, El-maksoud MSA, Elbaset MA, Hessin AF, Hassan RM. Design and synthesis of novel cycloalkanecarboxamide parabanic acid hybrids as anticonvulsants.. [DOI: 10.21203/rs.3.rs-3207381/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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.
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Meng Q, Ren X, Wang R, Han Y, Li X, Zhang Q, Li Z, Wang Y, Huang L, Yu H. Design, synthesis, anticonvulsant activity and structure-activity relationships of novel 7-Azaindole derivatives. Bioorg Chem 2023; 133:106430. [PMID: 36812828 DOI: 10.1016/j.bioorg.2023.106430] [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: 12/22/2022] [Revised: 01/30/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023]
Abstract
In search of new-structure compounds with good anticonvulsant activity and low neurotoxicity, a series of 3-(1,2,3,6-tetrahydropyridine)-7-azaindole derivatives was designed and synthesized. Their anticonvulsant activities were evaluated by maximal electroshock (MES) and pentylenetetrazole (PTZ) test, and neurotoxicity was determined by the rotary rod method. In the PTZ-induced epilepsy model, compounds 4i, 4p and 5 k showed significant anticonvulsant activities with ED50 values at 30.55 mg/kg, 19.72 mg/kg and 25.46 mg/kg, respectively. However, these compounds did not show any anticonvulsant activity in the MES model. More importantly, these compounds have lower neurotoxicity with protective index (PI = TD50/ED50) values at 8.58, 10.29 and 7.41, respectively. In order to obtain a clearer structure-activity relationship, more compounds were designed rationally based on 4i, 4p and 5 k and their anticonvulsant activities were evaluated on PTZ models. The results demonstrated that the N-atom at the 7-position of the 7-azaindole and the double-bond in the 1,2,3,6-tetrahydropyridine skeleton was essential for antiepileptic activities.
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Affiliation(s)
- Qingfei Meng
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Xue Ren
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Rui Wang
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Yu Han
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Xiufen Li
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Qin Zhang
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Zhenpeng Li
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Yuexing Wang
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Longjiang Huang
- State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China; State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 XiannongtanStreet, Xicheng district, Beijing 100050, China.
| | - Haibo Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 XiannongtanStreet, Xicheng district, Beijing 100050, China.
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Pal R, Singh K, Paul J, Khan SA, Naim MJ, Akhtar MJ. Overview of Chemistry and Therapeutic Potential of Non-Nitrogen Heterocyclics as Anticonvulsant Agents. Curr Neuropharmacol 2022; 20:1519-1553. [PMID: 34344289 PMCID: PMC9881093 DOI: 10.2174/1570159x19666210803144815] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/14/2021] [Accepted: 07/20/2021] [Indexed: 11/22/2022] Open
Abstract
Epilepsy is a chronic neurological disorder, characterized by the predisposition of unprovoked seizures affecting the neurobiological, psychological, cognitive, economic, and social wellbeing of the patient. As per the 2019 report by World Health Organization, it affects nearly 80% of the population, which comes from middle to low-income countries. It has been suggested that 70% of such cases can be treated effectively if properly diagnosed. It is one of the most common neurological diseases affecting 50 million people globally. Most of the antiepileptic drugs used in clinical practice are only 60-80% effective in controlling the disease. These drugs suffer from serious drawbacks of non-selectivity and toxicity that limit their clinical usefulness. Hence, there is a need to search for safe, potent, and effective anti-epileptic drugs. One of the emerging strategies to discover and develop selective and non-toxic anticonvulsant molecules focuses on the design of non-nitrogen heterocyclic compounds (NNHC). Drugs such as valproic acid, gabapentin, viagabatrin, fluorofelbamate, tiagabine, progabide, pregabalin, gamma amino butyric acid (GABA), etc. do not contain a nitrogen heterocyclic ring but are as effective anticonvulsants as conventional heterocyclic nitrogen compounds. This review covers the various classes of NNHC which have been developed in the recent past as anticonvulsants along with their chemistry, percentage yield, structure-activity relationship and biological activity. The most potent compound in each series has been identified for comparative studies, for further structural modification and to improve the pharmacokinetic profile. Various optimized synthetic pathways and diverse functionalities other than nitrogen-containing rings discussed in the article may help medicinal chemists to design safe and effective anticonvulsant drugs in near future.
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Affiliation(s)
- Rohit Pal
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, Ferozpur, Punjab, India;,These authors contributed equally to the review
| | - Karanvir Singh
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, Ferozpur, Punjab, India;,These authors contributed equally to the review
| | - Joyson Paul
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, Ferozpur, Punjab, India
| | - Shah Alam Khan
- Department of Pharmaceutical Chemistry, College of Pharmacy, National University of Science and Technology, PO 620, PC 130, Azaiba, Bousher, Muscat, Sultanate of Oman
| | - Mohd. Javed Naim
- Department of Pharmaceutical Chemistry, Bhagwant University, Ajmer Rajasthan, India
| | - Md. Jawaid Akhtar
- Department of Pharmaceutical Chemistry, College of Pharmacy, National University of Science and Technology, PO 620, PC 130, Azaiba, Bousher, Muscat, Sultanate of Oman;,Address correspondence to this author at the Department of Pharmaceutical Chemistry, College of Pharmacy, National University of Science and Technology, PO 620, PC 130, Azaiba, Bousher, Muscat, Sultanate of Oman; E-mails: ,
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Hassan MZ, Alsayari A, Asiri YI, Bin Muhsinah A. 1,2,4-Triazole-3-Thiones: Greener, One-Pot, Ionic Liquid Mediated Synthesis and Antifungal Activity. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.2009887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mohd. Zaheen Hassan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Abdulrhman Alsayari
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Yahya I. Asiri
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Abdullatif Bin Muhsinah
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
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Kale A, Kakde R, Pawar S, Thombare R. Recent Development in Substituted Benzothiazole as an Anticonvulsant Agent. Mini Rev Med Chem 2021; 21:1017-1024. [PMID: 33355052 DOI: 10.2174/1389557521666201222145236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/17/2020] [Accepted: 10/08/2020] [Indexed: 11/22/2022]
Abstract
Heterocyclic compounds and their derivatives gained more attention due to their valuable biological and pharmacological properties. Benzothiazole is a heterocyclic structure containing a bicyclic ring system with a large panel of applications. The benzothiazole is present in many new products undergoing research hoping that it possesses various biological activities. Epilepsy is a diverse group of diseases marked by neuronal excitability and hypersynchronous neuronal activity of motor, sensory or autonomic events with or without loss of consciousness. Presently, many antiepileptic drugs like lamotrigine, stiripentol tiagabine, pregabalin, felbamate, and topiramate are available and effective towards 60-80% of patients only, along with undesirable side effects, such as hepatotoxicity, gastrointestinal disturbance, drowsiness, gingival hyperplasia, and hirsutism. Thus, many attempts are still on-going to develop antiepileptic drugs with a safer profile. This review is mainly focused on the compilation of reported scientific literature data in the recent one-decade on the anticonvulsant activity of benzothiazole compounds.
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Affiliation(s)
- Amol Kale
- Department of Pharmaceutical Chemistry, Seth Govind Raghunath Sable College of Pharmacy, Saswad, Pune, Maharashtra, India
| | - Rajendra Kakde
- Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur Maharashtra 440001, India
| | - Smita Pawar
- Department of Pharmaceutical Chemistry, Seth Govind Raghunath Sable College of Pharmacy, Saswad, Pune, Maharashtra, India
| | - Rutuja Thombare
- Department of Pharmaceutical Chemistry, Seth Govind Raghunath Sable College of Pharmacy, Saswad, Pune, Maharashtra, India
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Kamal M, Jawaid T, Dar UA, Shah SA. Amide as a Potential Pharmacophore for Drug Designing of Novel Anticonvulsant Compounds. CHEMISTRY OF BIOLOGICALLY POTENT NATURAL PRODUCTS AND SYNTHETIC COMPOUNDS 2021:319-342. [DOI: 10.1002/9781119640929.ch11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Synthesis and anticonvulsant evaluation of indoline derivatives of functionalized aryloxadiazole amine and benzothiazole acetamide. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129742] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Djuidje EN, Sciabica S, Buzzi R, Dissette V, Balzarini J, Liekens S, Serra E, Andreotti E, Manfredini S, Vertuani S, Baldisserotto A. Design, synthesis and evaluation of benzothiazole derivatives as multifunctional agents. Bioorg Chem 2020; 101:103960. [PMID: 32559579 DOI: 10.1016/j.bioorg.2020.103960] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 04/28/2020] [Accepted: 05/20/2020] [Indexed: 10/24/2022]
Abstract
Oxidative stress is the product or aetiology of various multifactorial diseases; on the other hand, the development of multifunctional compounds is a recognized strategy for the control of complex diseases. To this end, a series of benzothiazole derivatives was synthesized and evaluated for their multifunctional effectiveness as antioxidant, sunscreen (filter), antifungal and antiproliferative agents. Compounds were easily synthesized via condensation reaction between 2-aminothiophenols and different benzaldehydes. SAR study, particularly in position 2 and 6 of benzothiazoles, led to the identification of 4g and 4k as very interesting potential compounds for the design of multifunctional drugs. In particular, compound 4g is the best blocker of hERG potassium channels expressed in HEK 293 cells exhibiting 60.32% inhibition with IC50 = 4.79 μM.
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Affiliation(s)
- Ernestine Nicaise Djuidje
- Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technologies, University of Ferrara, via L. Borsari 46, 44121 Ferrara, Italy
| | - Sabrina Sciabica
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, via F. di Mortara 17-19, 44121 Ferrara, Italy
| | - Raissa Buzzi
- Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technologies, University of Ferrara, via L. Borsari 46, 44121 Ferrara, Italy
| | - Valeria Dissette
- Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technologies, University of Ferrara, via L. Borsari 46, 44121 Ferrara, Italy
| | - Jan Balzarini
- Department of Microbiology and Immunology, KU Leuven, University of Leuven, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven B-3000, Belgium
| | - Sandra Liekens
- Department of Microbiology and Immunology, KU Leuven, University of Leuven, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven B-3000, Belgium
| | - Elena Serra
- Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technologies, University of Ferrara, via L. Borsari 46, 44121 Ferrara, Italy; Aptuit, An Evotec Company, Via A. Fleming 4, 37135 Verona, Italy
| | - Elisa Andreotti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Giuseppe Campi 287, 41125 Modena, Italy
| | - Stefano Manfredini
- Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technologies, University of Ferrara, via L. Borsari 46, 44121 Ferrara, Italy
| | - Silvia Vertuani
- Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technologies, University of Ferrara, via L. Borsari 46, 44121 Ferrara, Italy.
| | - Anna Baldisserotto
- Department of Life Sciences and Biotechnology, Master Course in Cosmetic Science and Technologies, University of Ferrara, via L. Borsari 46, 44121 Ferrara, Italy
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Siddiqui AA, Partap S, Khisal S, Yar MS, Mishra R. Synthesis, anti-convulsant activity and molecular docking study of novel thiazole pyridazinone hybrid analogues. Bioorg Chem 2020; 99:103584. [DOI: 10.1016/j.bioorg.2020.103584] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 12/06/2019] [Accepted: 01/12/2020] [Indexed: 12/17/2022]
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Bhat M, Belagali SL. Structural Activity Relationship and Importance of Benzothiazole Derivatives in Medicinal Chemistry: A Comprehensive Review. MINI-REV ORG CHEM 2020. [DOI: 10.2174/1570193x16666190204111502] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:Benzothiazole (1, 3-benzothiazole) is one of the heterocyclic compounds, which is a weak base having varied biological activities. The unique methine center present in the thiazole ring makes benzothiazole as the most important heterocyclic compound. It is a common and integral structure of many natural and synthetic bioactive molecules. Benzothiazole derivatives show a variety of activities, with less toxic effects and their derivatives showed enhanced activities, which has proven Benzothiazole scaffold as one of the important moieties in medicinal chemistry. Benzothiazole ring containing compounds possess various pharmacological activities such as anti-viral, anti-microbial, antiallergic, anti-diabetic, anti-tumor, anti-inflammatory, anthelmitic and anti-cancer, which makes benzothiazole a rapidly developing and interesting compound in the medicinal chemistry. This review briefly explains the importance, common methods of synthesis of the benzothiazole scaffold and also explains the popular benzothiazole molecules which have applications in various fields of chemistry. A review has been carried out based on various pharmacological activities containing benzothiazole moieties and rationalize the activities based on the structural variations. Literature on benzothiazole derivatives reveals that substitution on the C-2 carbon atom and C-6 are the reasons for a variety of biological activities.
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Affiliation(s)
- Mahesh Bhat
- PG Department of Chemistry, Bangur Nagar Arts, Science and Commerce College, Dandeli - 581325 Karnataka, India
| | - Shiddappa Lagamappa Belagali
- Environmental Chemistry Laboratory, Department of Studies in Environmental Science, University of Mysore, Manasagangothri, Mysore -570 006, Karnataka, India
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Synthesis and Anticonvulsant Activity of New 2-(4-Oxo-2-Thioxo-1,4-Dihydro-3(2h)-Quinazolinyl)Acetamides. Pharm Chem J 2020. [DOI: 10.1007/s11094-020-02147-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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An overview of structurally diversified anticonvulsant agents. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2019; 69:321-344. [PMID: 31259739 DOI: 10.2478/acph-2019-0023] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/15/2018] [Indexed: 01/19/2023]
Abstract
There are several limited approaches to treat epilepsy in hospitals, for example, using medicines, surgery, electrical stimulation and dietary interventions. Despite the availability of all these new and old approaches, seizure is particularly difficult to manage. The quest for new antiepileptic molecules with more specificity and less CNS toxicity continues for medicinal chemists until a new and ideal drug arrives. This review covers new antiseizure molecules of different chemical classes, the exact mode of action of which is still unidentified. Newer agents include sulfonamides, thiadiazoles, semi- and thiosemicarbazones, pyrrolidine-2,5-diones, imidazoles, benzothiazoles and amino acid deriva tives. These new chemical entities can be useful for the design and development of forthcoming antiseizure agents.
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Jamal Gilani S, Zaheen Hassan M, Sarim Imam S, Kala C, Prakash Dixit S. Novel benzothiazole hydrazine carboxamide hybrid scaffolds as potential in vitro GABA AT enzyme inhibitors: Synthesis, molecular docking and antiepileptic evaluation. Bioorg Med Chem Lett 2019; 29:1825-1830. [PMID: 31084949 DOI: 10.1016/j.bmcl.2019.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/02/2019] [Accepted: 05/05/2019] [Indexed: 11/17/2022]
Abstract
In the present study, a series of newer benzothiazole derivatives containing thiazolidin-4-one (5a-g) and azetidin-2-one (6a-g), were synthesized by the cyclization of benzothiazolyl arylidene hydrazine carboxamide derivatives with thioglycolic acid and chloroacetyl chloride, respectively. Results of in vivo anticonvulsant screening revealed that compounds having 2,4-dicholoro (5c and 6c) and 4-nitro substituent (5g) at the phenyl ring have promising anticonvulsant activities without any neurotoxicity. Selected compounds were also evaluated for their in vitro GABA AT inhibition. The results indicated that compound 5c (IC50 15.26 μM) exhibited excellent activity as compared to the standard drug vigabatrin (IC50 39.72 μM) suggesting the potential of these benzothiazole analogues as new anticonvulsant agents.
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Affiliation(s)
| | | | - Syed Sarim Imam
- Glocal School of Pharmacy, Glocal University, Saharanpur, UP, India
| | - Chandra Kala
- Glocal School of Pharmacy, Glocal University, Saharanpur, UP, India
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Aboul-Enein MN, El-Azzouny AA, Ragab F, Abdel-Maksoud MS, Abd-Allah WH, Maklad Y. Synthesis, Molecular Modeling, Anticonvulsant and Antinociceptive Properties of New 1,1-Disubstituted Cyclohexane and 1,3-Diazaspiro[4.5]decane Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201803727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mohamed Nabil Aboul-Enein
- Department of Medicinal and Pharmaceutical Chemistry, (Pharmaceutical Chemistry Group); Pharmaceutical and Drug Industries Research Division); National Research Centre; Giza Egypt
| | - Aida A. El-Azzouny
- Department of Medicinal and Pharmaceutical Chemistry, (Pharmaceutical Chemistry Group); Pharmaceutical and Drug Industries Research Division); National Research Centre; Giza Egypt
| | - Fatma Ragab
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Cairo University; Cairo Egypt
| | - Mohammed S. Abdel-Maksoud
- Department of Medicinal and Pharmaceutical Chemistry, (Pharmaceutical Chemistry Group); Pharmaceutical and Drug Industries Research Division); National Research Centre; Giza Egypt
| | - Walaa H. Abd-Allah
- Pharmaceutical Chemistry Department; College of Pharmaceutical Sciences and Drug Manufacturing; Misr University for Science & Technology, P.O. 77; 6th of October City Giza Egypt
| | - Yousreya Maklad
- Department of Medicinal and Pharmaceutical Chemistry (Pharmacology Group); National Research Centre; Giza Egypt
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Tariq S, Kamboj P, Amir M. Therapeutic advancement of benzothiazole derivatives in the last decennial period. Arch Pharm (Weinheim) 2018; 352:e1800170. [PMID: 30488989 DOI: 10.1002/ardp.201800170] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/04/2018] [Accepted: 10/10/2018] [Indexed: 11/08/2022]
Abstract
Benzothiazole, a fused heterocyclic moiety, has attracted synthetic and medicinal chemists for good reasons. It is a valuable scaffold that possesses diverse biological activities, such as anticancer, anti-inflammatory, antimicrobial, antiviral, antimalarial, and anticonvulsant effects. This review mainly focusses on the recent research work on the different biological activities of benzothiazole-based compounds.
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Affiliation(s)
- Sana Tariq
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Payal Kamboj
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Mohammad Amir
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
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Aboul-Enein MN, El-Azzouny AA, Amin KM, Aboutabl ME, Abo-Elmagd MI. Synthesis, molecular modeling studies, and anticonvulsant evaluation of novel 1-((2-hydroxyethyl)(aryl)amino)-N-substituted cycloalkanecarboxamides and their acetate esters. Arch Pharm (Weinheim) 2018; 351:e1800269. [PMID: 30461033 DOI: 10.1002/ardp.201800269] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 12/20/2022]
Abstract
A series of 1-((2-hydroxyethyl)(aryl)amino)-N-substituted cycloalkanecarboxamides IXa-l and their acetate esters Xa-l were designed and synthesized as new anticovulsant agents. The evaluation of the anticonvulsant effect was performed in vivo by subcutaneous pentylenetetrazole (scPTZ) and maximal electroshock (MES) tests in mice. Further, neurotoxicity, hepatotoxicity, and acute toxicity were determined. All the new candidates displayed 100% anticonvulsant activity in the scPTZ screen in the dose range of 0.0057-0.283 mmol/kg. The most potent compounds in the scPTZ screen were Xh (ED50 = 0.0012 mmol/kg), Xd (ED50 = 0.002 mmol/kg), Xf (ED50 = 0.004 mmol/kg), IXj (ED50 = 0.0047 mmol/kg), Xl (ED50 = 0.0076 mmol/kg), and Xi (ED50 = 0.008 mmol/kg). They exhibited higher fold activity in the anticonvulsant potential than the gold standards, phenobarbital and ethosuximide. Compound Xf was active in both scPTZ and MES screens. It showed ED50 of 0.016 mmol/kg in MES screen. In the neurotoxicity screens, none of the test compounds displayed any minimal motor impairment at the maximum administered dose. The 3D pharmacophore model using Biova 1 Discovery Studio 2016 programs exhibited high fit value. The anticonvulsant evaluation results were compatible with the molecular modeling study.
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Affiliation(s)
- Mohamed N Aboul-Enein
- Department of Medicinal and Pharmaceutical Chemistry, Medicinal Chemistry Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
| | - Aida A El-Azzouny
- Department of Medicinal and Pharmaceutical Chemistry, Medicinal Chemistry Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
| | - Kamilia M Amin
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Cairo University, Cairo, Egypt
| | - Mona E Aboutabl
- Department of Medicinal and Pharmaceutical Chemistry, Pharmacology Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
| | - Mai I Abo-Elmagd
- Department of Medicinal and Pharmaceutical Chemistry, Medicinal Chemistry Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
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Partap S, Akhtar MJ, Yar MS, Hassan MZ, Siddiqui AA. Pyridazinone hybrids: Design, synthesis and evaluation as potential anticonvulsant agents. Bioorg Chem 2018; 77:74-83. [PMID: 29334622 DOI: 10.1016/j.bioorg.2018.01.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 12/24/2017] [Accepted: 01/02/2018] [Indexed: 11/25/2022]
Abstract
A series of new hybrid benzothiazole containing pyridazinones derivatives were designed and synthesized fulfilling all the pharmacophoric requirements essential for the anticonvulsant activity. In-silico and in vitro studies revealed that some of these hybrid derivatives demonstrated admirable GABA AT inhibitory activity. An attempt has also been made to validate the results of in vitro GABA AT inhibition of the most potent compound SPS-5F (IC50 9.10 μM) through in vivo anticonvulsant screening. Compound SPS-5F administration significantly increases the whole brain GABA level, might be through the inhibition of GABA AT enzyme.
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Affiliation(s)
- Sangh Partap
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard University, New Delhi 110062, India
| | - Md Jawaid Akhtar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard University, New Delhi 110062, India
| | - Mohammed Shahar Yar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard University, New Delhi 110062, India
| | - Mohd Zaheen Hassan
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard University, New Delhi 110062, India; Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Anees Ahmad Siddiqui
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard University, New Delhi 110062, India.
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Abuelhassan AH, Badran MM, Hassan HA, Abdelhamed D, Elnabtity S, Aly OM. Design, synthesis, anticonvulsant activity, and pharmacophore study of new 1,5-diaryl-1H-1,2,4-triazole-3-carboxamide derivatives. Med Chem Res 2017. [DOI: 10.1007/s00044-017-2114-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Design, synthesis and evaluation of newer 5,6-dihydropyrimidine-2(1 H )-thiones as GABA-AT inhibitors for anticonvulsant potential. Bioorg Chem 2017; 74:166-178. [DOI: 10.1016/j.bioorg.2017.07.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/25/2017] [Accepted: 07/27/2017] [Indexed: 10/19/2022]
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Partap S, Yar MS, Hassan MZ, Akhtar MJ, Siddiqui AA. Design, Synthesis, and Pharmacological Screening of Pyridazinone Hybrids as Anticonvulsant Agents. Arch Pharm (Weinheim) 2017; 350. [DOI: 10.1002/ardp.201700135] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/31/2017] [Accepted: 08/07/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Sangh Partap
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard University; New Delhi India
| | - Mohammad Shahar Yar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard University; New Delhi India
| | - Md. Zaheen Hassan
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard University; New Delhi India
- School of Chemical Science; University of Sains Penang; Penang Malaysia
| | - Md. Jawaid Akhtar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard University; New Delhi India
| | - Anees A. Siddiqui
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard University; New Delhi India
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Matias M, Campos G, Silvestre S, Falcão A, Alves G. Early preclinical evaluation of dihydropyrimidin(thi)ones as potential anticonvulsant drug candidates. Eur J Pharm Sci 2017; 102:264-274. [DOI: 10.1016/j.ejps.2017.03.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 02/19/2017] [Accepted: 03/10/2017] [Indexed: 11/28/2022]
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Synthesis, molecular modeling studies and anticonvulsant activity of certain (1-(benzyl (aryl) amino) cyclohexyl) methyl esters. Bioorg Chem 2017; 71:135-145. [PMID: 28267983 DOI: 10.1016/j.bioorg.2017.01.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/22/2016] [Accepted: 01/29/2017] [Indexed: 12/19/2022]
Abstract
A series of (1-(benzyl (aryl) amino) cyclohexyl) methyl esters 7a-n were prepared and screened for their anticonvulsant profile. Screening of these esters 7a-n and their starting alcohols 6a and 6b revealed that compound 7k was the most potent one in the scPTZ screening test with an ED50 value of 0.0056mmol/kg being about 10- and 164-fold more potent than phenobarbital (ED50=0.056mmol/kg) and ethosuximide (ED50=0.92mmol/kg) as reference drugs, respectively. Meanwhile, in the MES test, compounds 7b and 7k at doses 0.0821mmol/kg and 0.0334mmol/kg, exerted 66% and 50% protection of the tested mice, respectively, compared with diphenylhydantoin, which exerted 100% protection at dose 0.16mmol/kg. In the neurotoxicity screen test, almost all esters 7a-n did not show any minimal motor impairment at the maximum administrated dose. The anticonvulsant effectiveness of esters 7a-n was higher than their corresponding alcohols 6a and 6b. Compounds 7b and 7k exhibited pronounced anticonvulsant activity devoid of neurotoxicity in minimal motor impairment test and hepatotoxicity in the serum enzyme activity assay. 3D pharmacophore model using Discovery Studio 2.5 programs showed high fit value. The obtained experimental results of sc-PTZ activity of compounds 7a-n was consistent with the molecular modeling study.
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Siddiqui N, Alam MS, Sahu M, Naim MJ, Yar MS, Alam O. Design, synthesis, anticonvulsant evaluation and docking study of 2-[(6-substituted benzo[d]thiazol-2-ylcarbamoyl)methyl]-1-(4-substituted phenyl)isothioureas. Bioorg Chem 2017; 71:230-243. [PMID: 28238402 DOI: 10.1016/j.bioorg.2017.02.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 02/15/2017] [Accepted: 02/15/2017] [Indexed: 11/18/2022]
Abstract
In this paper, we report the synthesis of 2-[(6-substituted benzo[d]thiazol-2-ylcarbamoyl)methyl]-1-(4-substituted phenyl)isothiourea derivatives (4a-y) carrying active pharmacophores essential for anticonvulsant activity. The anticonvulsant activity was evaluated in vivo by maximal electroshock (MES) test and subcutaneous pentylenetetrazole (scPTZ) test in mice. Most of the compounds showed promising anticonvulsant activity. The most active compounds 4b and 4q were found active in both MES and scPTZ models, without signs of neurotoxicity. Compound 4b showed the moderate change in SGOT and alkaline phosphatase level as compared to control. Compounds 4b and 4w were also found to elevate GABA levels in the olfactory lobe, mid brain, medulla oblongata and cerebellum regions of rat brain. In molecular docking study, the title compounds exhibited good binding properties with epilepsy molecular targets such as GABA-A. Structure-activity relationships are also elaborated along with the analysis of lipophilicity. The results suggested that compound 4b is likely to have varied mechanisms of action including voltage-gated ion channel inhibition and modulating GABAergic action.
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Affiliation(s)
- Nadeem Siddiqui
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India.
| | - Md Shamsher Alam
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India; Department of Pharmaceutical Chemistry, College of Pharmacy, P.O. Box no. 114, Jazan University, Jazan, Saudi Arabia
| | - Meeta Sahu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India
| | - Mohd Javed Naim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India
| | - M Shahar Yar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India
| | - Ozair Alam
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India
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Matias M, Silvestre S, Falcão A, Alves G. Gastrodia elata and epilepsy: Rationale and therapeutic potential. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1511-1526. [PMID: 27765372 DOI: 10.1016/j.phymed.2016.09.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 08/29/2016] [Accepted: 09/03/2016] [Indexed: 05/25/2023]
Abstract
BACKGROUND Gastrodia elata Blume (G. elata) is a traditional Chinese herb used for centuries in folk medicine. Due to the claimed anticonvulsant properties of G. elata, it is expected that this herb continues to be a target of research, aiming to deepen the available knowledge on its biological activity and safety. PURPOSE The current review aims to discuss the most recent advances on the elucidation of the phytochemical composition and anticonvulsant potential of G. elata. METHODS Available literature was reviewed from PubMed, ISI Web of Knowledge and Science Direct, using combinations of the following keywords: Gastrodia elata, tianma, epilepsy, anticonvulsant and pharmacokinetics. Abstracts and full texts were evaluated for their clarity and scientific merit. RESULTS G. elata rhizome, as well as specific phenolic compounds isolated from this herb, have demonstrated anticonvulsant potential in a variety of in vitro and in vivo models. The pharmacological mechanisms potentially involved in the anticonvulsant activity have been extensively studied, being similar to the known mechanisms claimed for the available antiepileptic drugs. In addition, the pharmacokinetics of the main bioactive component of G. elata (gastrodin) has also been studied. CONCLUSION Due to its recognised therapeutic properties, G. elata has gained an increasing interest within the scientific community and, therefore, new medicinal preparations containing G. elata rhizome itself or its bioactive components are expected to be developed in the coming years. Moreover, specific phytochemical constituents isolated from G. elata may also be considered to integrate programs of discovery and development of new anticonvulsant drug candidates.
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Affiliation(s)
- Mariana Matias
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - Samuel Silvestre
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - Amílcar Falcão
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal; Department of Pharmacology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Gilberto Alves
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Rua Marquês d'Ávila e Bolama, 6201-001 Covilhã, Portugal; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-517 Coimbra, Portugal.
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Talevi A. Computational approaches for innovative antiepileptic drug discovery. Expert Opin Drug Discov 2016; 11:1001-16. [DOI: 10.1080/17460441.2016.1216965] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Synthesis and Biological Evaluation of Novel Benzothiazole Derivatives as Potential Anticonvulsant Agents. Molecules 2016; 21:164. [PMID: 26938519 PMCID: PMC6274423 DOI: 10.3390/molecules21030164] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 01/25/2016] [Indexed: 02/01/2023] Open
Abstract
New benztriazoles with a mercapto-triazole and other heterocycle substituents were synthesized and evaluated for their anticonvulsant activity and neurotoxicity by using the maximal electroshock (MES), subcutaneous pentylenetetrazole (scPTZ), and rotarod neurotoxicity (TOX) tests. Among the compounds studied, compound 2-((1H-1,2,4-triazol-3-yl)thio)-N-(6-((3-fluorobenzyl)oxy)benzo[d]thiazol-2-yl)acetamide (5i) and 2-((1H-1,2,4-triazol-3-yl)thio)-N-(6-((4-fluorobenzyl)oxy)benzo[d] thiazol-2-yl)acetmide (5j) were the most potent, with an ED50 value of 50.8 mg/kg and 54.8 mg/kg in the MES test and 76.0 mg/kg and 52.8 mg/kg in the scPTZ seizures test, respectively. They also showed lower neurotoxicity and, therefore a higher protective index. In particular, compound 5j showed high protective index (PI) values of 8.96 in the MES test and 9.30 in the scPTZ test, which were better than those of the standard drugs used as positive controls in this study.
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Synthesis and Biological Evaluation of Novel Benzothiazole Derivatives as Potential Anticonvulsant Agents. Molecules 2016. [DOI: 10.3390/molecules21020164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Wei CX, Bian M, Gong GH. Current Research on Antiepileptic Compounds. Molecules 2015; 20:20741-76. [PMID: 26610448 PMCID: PMC6332177 DOI: 10.3390/molecules201119714] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/03/2015] [Accepted: 11/06/2015] [Indexed: 02/02/2023] Open
Abstract
Epilepsy affects about 1% of the world’s population. Due to the fact all antiepileptic drugs (AEDs) have some undesirable side effects and about 30% of epileptic patients are not seizure-free with the existing AEDs, there is still an urgent need for the development of more effective and safer AEDs. Based on our research work on antiepileptic compounds and other references in recent years, this review covers the reported work on antiepileptic compounds which are classified according to their structures. This review summarized 244 significant anticonvulsant compounds which are classified by functional groups according to the animal model data, although there are some limitations in the data. This review highlights the properties of new compounds endowed with promising antiepileptic properties, which may be proven to be more effective and selective, and possibly free of unwanted side effects. The reviewed compounds represent an interesting possibility to overcome refractory seizures and to reduce the percentage of patients with a poor response to drug therapy.
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Affiliation(s)
- Cheng-Xi Wei
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao 028000, China.
| | - Ming Bian
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao 028000, China.
| | - Guo-Hua Gong
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao 028000, China.
- Affiliated Hospital of Inner Mongolia University for Nationalities, Tongliao 028000, Inner Mongolia, China.
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Mustafa G, Ahuja A, Al Rohaimi AH, Muslim S, Hassan AA, Baboota S, Ali J. Nano-ropinirole for the management of Parkinsonism: blood–brain pharmacokinetics and carrier localization. Expert Rev Neurother 2015; 15:695-710. [DOI: 10.1586/14737175.2015.1036743] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Nikalje AP, Ansari A, Bari S, Ugale V. Synthesis, Biological Activity, and Docking Study of Novel Isatin Coupled Thiazolidin-4-one Derivatives as Anticonvulsants. Arch Pharm (Weinheim) 2015; 348:433-45. [PMID: 25903766 DOI: 10.1002/ardp.201500020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 02/28/2015] [Accepted: 03/06/2015] [Indexed: 11/10/2022]
Abstract
A series of 2-(substituted-phenyl)-3-(2-oxoindolin-3-ylidene)amino)-thiazolidin-4-one derivatives were designed and synthesized under microwave irradiation, using an eco-friendly, efficient, microwave-assisted synthetic protocol that involves cyclocondensation of 3-substituted benzylidine-hydrazono-indolin-2-one 3a-j with thioglycolic acid in dimethyl formamide (DMF) as solvent and anhydrous zinc chloride as a catalyst, keeping in view the structural requirement of the pharmacophore. The intermediate compounds 3a-j were obtained by condensation of the hydrazone of indoline-2,3-dione with aromatic aldehydes. The synthesized derivatives were evaluated for CNS depressant activity and anticonvulsant activity in mice using the maximal electroshock seizure (MES) and subcutaneous pentylenetetrazole (sc-PTZ) induced seizure tests. All the derivatives showed good CNS depressant activity and showed protection in the MES test, indicative of their ability to inhibit the seizure spread. A histopathological study was performed to evaluate liver toxicity caused by the synthesized compounds. The compounds were nontoxic. A computational study was performed, in which log P values were calculated experimentally. Virtual screening was performed by molecular docking of the designed compounds into the ATP binding sites of the NMDA and AMPA receptors, to predict if these compounds have analogous binding modes.
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Affiliation(s)
- Anna P Nikalje
- Department of Pharmaceutical Chemistry, Y. B. Chavan College of Pharmacy, Aurangabad, Maharashtra, India
| | - Altamash Ansari
- Department of Pharmaceutical Chemistry, Y. B. Chavan College of Pharmacy, Aurangabad, Maharashtra, India
| | - Sanjay Bari
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmacy, Shirpur (Dhule), Maharashtra, India
| | - Vinod Ugale
- Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmacy, Shirpur (Dhule), Maharashtra, India
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31
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Gill RK, Rawal RK, Bariwal J. Recent advances in the chemistry and biology of benzothiazoles. Arch Pharm (Weinheim) 2015; 348:155-78. [PMID: 25682746 DOI: 10.1002/ardp.201400340] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/28/2014] [Accepted: 12/01/2014] [Indexed: 11/09/2022]
Abstract
Benzothiazole is a privileged heterocyclic scaffold having a benzene ring fused with a five-membered thiazole ring. This moiety has attracted considerable attention because of its wide range of pharmacological activities such as antitubercular, antimicrobial, antimalarial, anticonvulsant, anthelmintic, analgesic, anti-inflammatory, antidiabetic, antitumor activity, etc. In the last few years, some novel benzothiazoles have been developed with varied biological activities. To access this scaffold in high yield and to introduce diversity, a variety of new synthetic methods have been invented. In this review, we highlight the development of novel benzothiazoles for various biological activities along with the best synthetic protocols for their synthesis.
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Affiliation(s)
- Rupinder K Gill
- Department of Pharmaceutical Sciences, ISF College of Pharmacy, Moga, Punjab, India; Research Scholar, Punjab Technical University, Jalandhar, Punjab, India
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Thiazole: a promising heterocycle for the development of potent CNS active agents. Eur J Med Chem 2014; 92:1-34. [PMID: 25544146 DOI: 10.1016/j.ejmech.2014.12.031] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/10/2014] [Accepted: 12/18/2014] [Indexed: 01/15/2023]
Abstract
Thiazole is a valuable scaffold in the field of medicinal chemistry and has accounted to display a variety of biological activities. Thiazole and its derivatives have attracted continuing interest to design various novel CNS active agents. In the past few decades, thiazoles have been widely used to develop a variety of therapeutic agents against numerous CNS targets. Thiazole containing drug molecules are currently being used in treatment of various CNS disorders and a number of thiazole derivatives are also presently in clinical trials. A lot of research has been carried out on thiazole and their analogues, which has proved their efficacy to overcome several CNS disorders in rodent as well as primate models. The aim of present review is to highlights diverse CNS activities displayed by thiazole and their derivatives. SAR of this nucleus has also been well discussed. This review covers the recent updates present in literature and will surely provide a greater insight for the designing and development of potent thiazole based CNS active agents in future.
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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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Keri RS, Patil MR, Patil SA, Budagumpi S. A comprehensive review in current developments of benzothiazole-based molecules in medicinal chemistry. Eur J Med Chem 2014; 89:207-51. [PMID: 25462241 DOI: 10.1016/j.ejmech.2014.10.059] [Citation(s) in RCA: 307] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 10/19/2014] [Accepted: 10/20/2014] [Indexed: 02/08/2023]
Abstract
Benzothiazole (BTA) and its derivatives are the most important heterocyclic compounds, which are common and integral feature of a variety of natural products and pharmaceutical agents. BTA shows a variety of pharmacological properties, and its analogs offer a high degree of structural diversity that has proven useful for the search of new therapeutic agents. The broad spectrum of pharmacological activity in individual BTA derivative indicates that, this series of compounds is of an undoubted interest. The related research and developments in BTA-based medicinal chemistry have become a rapidly developing and increasingly active topic. Particularly, numerous BTA-based compounds as clinical drugs have been extensively used in practice to treat various types of diseases with high therapeutic potency. This work systematically gives a comprehensive review in current developments of BTA-based compounds in the whole range of medicinal chemistry as anticancer, antibacterial, antifungal, antiinflammatory, analgesic, anti-HIV, antioxidant, anticonvulsant, antitubercular, antidiabetic, antileishmanial, antihistaminic, antimalarial and other medicinal agents. It is believed that, this review article is helpful for new thoughts in the quest for rational designs of more active and less toxic BTA-based drugs, as well as more effective diagnostic agents and pathologic probes.
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Affiliation(s)
- Rangappa S Keri
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India.
| | - Mahadeo R Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India
| | - Siddappa A Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India
| | - Srinivasa Budagumpi
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bangalore 562112, Karnataka, India
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35
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Amir M, Ali I, Hassan MZ, Mulakayala N. Design, Synthesis, and Biological Evaluation of Hydrazone Incorporated 1,2,4-Triazines as Anticonvulsant Agents. Arch Pharm (Weinheim) 2014; 347:958-68. [DOI: 10.1002/ardp.201400045] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 08/08/2014] [Accepted: 08/15/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Mohammed Amir
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry; Hamdard University; New Delhi India
| | - Israr Ali
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry; Hamdard University; New Delhi India
| | - Mohd. Zaheen Hassan
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry; Hamdard University; New Delhi India
| | - Naveen Mulakayala
- Institute of Life Science; University of Hyderabad Campus; Hyderabad India
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Wei E, Liu B, Lin S, Liang F. Multicomponent reaction of chalcones, malononitrile and DMF leading to γ-ketoamides. Org Biomol Chem 2014; 12:6389-92. [DOI: 10.1039/c4ob00971a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Prasanthi G, Prasad K, Bharathi K. Synthesis, anticonvulsant activity and molecular properties prediction of dialkyl 1-(di(ethoxycarbonyl)methyl)-2,6-dimethyl-4-substituted-1,4-dihydropyridine-3,5-dicarboxylates. Eur J Med Chem 2014; 73:97-104. [DOI: 10.1016/j.ejmech.2013.12.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 11/22/2013] [Accepted: 12/03/2013] [Indexed: 10/25/2022]
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38
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Abbavaram BRA, Reddyvari HR. Synthesis, Characterization and Antimicrobial Activity of Bifunctional Sulfonamide-Amide Derivatives. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2013. [DOI: 10.5012/jkcs.2013.57.6.731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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In vitro brain GABA-transaminase activity of 1-(4-acetylphenyl)-3-aryloxypyrrolidine-2,5-dione derivatives. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.jopr.2013.04.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
In recent years heterocyclic compounds analogues and derivatives have attracted wide attention due to their useful biological and pharmacological properties. Benzothiazole is among the usually occurring heterocyclic nuclei in many marine as well as natural plant products. Benzothiazole is a privileged bicyclic ring system with multiple applications. It is known to exhibit a wide range of biological properties including anticancer, antimicrobial, and antidiabetic, anticonvulsant, anti-inflammatory, antiviral, antitubercular activities. A large number of therapeutic agents are synthesized with the help of benzothiazole nucleus. During recent years there have been some interesting developments in the biological activities of benzothiazole derivatives. These compounds have special significance in the field of medicinal chemistry due to their remarkable pharmacological potentialities. This review is mainly an attempt to present the research work reported in the recent scientific literature on different biological activities of benzothiazole compounds.
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