1
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Ratan Y, Rajput A, Pareek A, Jain V, Pareek A, Gupta MM, Kamal MA. Green Synthetic Strategies and Pharmaceutical Applications of Thiazine and its Derivatives: An Updated Review. Curr Pharm Biotechnol 2024; 25:1142-1166. [PMID: 37694776 DOI: 10.2174/1389201025666230908141543] [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: 02/21/2023] [Revised: 07/02/2023] [Accepted: 07/24/2023] [Indexed: 09/12/2023]
Abstract
Thiazines are a sizable class of organic heterocycles that are notable for their skeletal versatility and relative chemical simplicity, making them among the most flexible sources of biologically active compounds. The term "green synthesis" refers to implementing energy-efficient procedures for the nature-friendly production of materials and chemicals using green solvents, catalysts, and suitable reaction conditions. Considering the importance of green chemistry and the outstanding therapeutic profile of thiazines, the present work was designed to review the recent advances in green chemistry-based synthetic strategies of thiazine and its derivatives. The green synthetic approaches, including microwave-assisted, ultrasound-assisted, and various other synthetic methods for thiazine and its derivatives, were discussed and generalized. In addition, applications of thiazine and its derivatives in pharmaceutical sciences were explained with examples of marketed drugs.The discussed sustainable synthetic methods for thiazines and their derivatives could be useful in developing other medicinally important lead molecules. They could also aid in developing new synthetic schemes and apparatuses that may simplify chemical manufacturing processes and enable novel reactions with minimal by-products while questing for optimal, green solvents. This review can help anyone interested in this fascinating class of heterocycles to make decisions about selecting targets and tasks for future research.
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Affiliation(s)
- Yashumati Ratan
- Department of Pharmacy, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Aishwarya Rajput
- Department of Pharmacy, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Ashutosh Pareek
- Department of Pharmacy, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Vivek Jain
- Department of Pharmaceutical Sciences, MLSU, Udaipur-313001, Rajasthan, India
| | - Aaushi Pareek
- Department of Pharmacy, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Madan Mohan Gupta
- School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad & Tobago, WI
| | - Mohammad Amjad Kamal
- Joint Laboratory of Artificial Intelligence in Healthcare, Institutes for Systems Genetics and West China School of Nursing, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
- Enzymoics, 7Peterlee place, Hebersham, NSW 2770, Novel Global Community Educational Foundation, Australia
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2
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Aljuaid A, Allahyani M, Alsaiari AA, Almehmadi M, Alsharif A, Asif M. Green Synthetic Methods of Oxazine and Thiazine Scaffolds as Promising Medicinal Compounds: A Mini-review. Curr Org Synth 2024; 21:837-857. [PMID: 37779415 DOI: 10.2174/1570179420666230811092847] [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: 05/01/2023] [Revised: 06/13/2023] [Accepted: 07/12/2023] [Indexed: 10/03/2023]
Abstract
Medical researchers have paid close attention to the green synthesis of oxazine and thiazine derivatives since they provided a lead molecule for the creation of numerous possible bioactive compounds. This review provides more information on green synthesis, which will be very helpful to researchers in creating the most effective, affordable, and clinically significant thiazine and oxazine derivatives that are anticipated to have strong pharmacological effects. This has resulted in the identification of several substances with a wide range of intriguing biological functions. This article's goal is to examine the numerous green chemical processes used to create oxazine and thiazine derivatives and their biological activity. We anticipate that researchers interested in oxazine and thiazine chemicals will find this material to be useful. We anticipate that medicinal chemists looking for new active medicinal components for drug discovery and advance progress will find this review of considerable interest.
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Affiliation(s)
- Abdulelah Aljuaid
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mamdouh Allahyani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ahad Amer Alsaiari
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mazen Almehmadi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Abdulaziz Alsharif
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mohammad Asif
- Department of Pharmaceutical Chemistry, Era College of Pharmacy, Era University, Lucknow, 226003, Uttar Pradesh, India
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3
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Wang CC, Yang YT, Wang QL, Liu XH, Chen YJ. Regioselective and stereospecific synthesis of functionalized 3,4-dihydro-2 H-1,4-thiazines by catalyst-free [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines. Org Chem Front 2022. [DOI: 10.1039/d2qo00612j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient route to 3,4-dihydro-2H-1,4-thiazines was developed though [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines under catalyst-free conditions.
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Affiliation(s)
- Chuan-Chuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Yan-Tao Yang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Qing-Long Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Xue-Hua Liu
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Ya-Jing Chen
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
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4
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Chines S, Ehrt C, Potowski M, Biesenkamp F, Grützbach L, Brunner S, van den Broek F, Bali S, Ickstadt K, Brunschweiger A. Navigating chemical reaction space – application to DNA-encoded chemistry. Chem Sci 2022; 13:11221-11231. [PMID: 36320474 PMCID: PMC9517168 DOI: 10.1039/d2sc02474h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 08/31/2022] [Indexed: 12/02/2022] Open
Abstract
Databases contain millions of reactions for compound synthesis, rendering selection of reactions for forward synthetic design of small molecule screening libraries, such as DNA-encoded libraries (DELs), a big data challenge. To support reaction space navigation, we developed the computational workflow Reaction Navigator. Reaction files from a large chemistry database were processed using the open-source KNIME Analytics Platform. Initial processing steps included a customizable filtering cascade that removed reactions with a high probability to be incompatible with DEL, as they would e.g. damage the genetic barcode, to arrive at a comprehensive list of transformations for DEL design with applicability potential. These reactions were displayed and clustered by user-defined molecular reaction descriptors which are independent of reaction core substitution patterns. Thanks to clustering, these can be searched manually to identify reactions for DEL synthesis according to desired reaction criteria, such as ring formation or sp3 content. The workflow was initially applied for mapping chemical reaction space for aromatic aldehydes as an exemplary functional group often used in DEL synthesis. Exemplary reactions have been successfully translated to DNA-tagged substrates and can be applied to library synthesis. The versatility of the Reaction Navigator was then shown by mapping reaction space for different reaction conditions, for amines as a second set of starting materials, and for data from a second database. The computational tool Reaction Navigator supports chemical reaction space navigation by filtering and clustering reactions from chemistry databases. The utility of the tool was demonstrated by identification of reactions for DNA-encoded libraries.![]()
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Affiliation(s)
- Silvia Chines
- TU Dortmund University, Department of Chemistry and Chemical Biology, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | | | - Marco Potowski
- TU Dortmund University, Department of Chemistry and Chemical Biology, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Felix Biesenkamp
- TU Dortmund University, Department of Chemistry and Chemical Biology, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Lars Grützbach
- TU Dortmund University, Department of Chemistry and Chemical Biology, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
| | - Susanne Brunner
- TU Dortmund University, Department of Statistics, Vogelpothsweg 87, 44227, Dortmund, Germany
| | | | - Shilpa Bali
- Elsevier B.V., Radarweg 29, 1043 NX Amsterdam, The Netherlands
| | - Katja Ickstadt
- TU Dortmund University, Department of Statistics, Vogelpothsweg 87, 44227, Dortmund, Germany
| | - Andreas Brunschweiger
- TU Dortmund University, Department of Chemistry and Chemical Biology, Otto-Hahn-Str. 6, 44227, Dortmund, Germany
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5
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Afrough T, Bakavoli M, Eshghi H, Beyzaei H, Moghaddam-Manesh M. Synthesis, Characterization and In Vitro Antibacterial Evaluation of Novel 4-(1-(Pyrimidin-4-yl)Ethyl)-12 H-Pyrimido[4′,5′:5,6][1,4]Thiazino[2,3- b]Quinoxaline Derivatives. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2019.1614640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Toktam Afrough
- Faculty of Science, Department of Chemistry, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mehdi Bakavoli
- Faculty of Science, Department of Chemistry, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Hossein Eshghi
- Faculty of Science, Department of Chemistry, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Hamid Beyzaei
- Faculty of Science, Department of Chemistry, University of Zabol, Zabol, Iran
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6
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Hassan AA, Bräse S, Aly AA, Tawfeek HN. Chemistry of Substituted Thiazinanes and Their Derivatives. Molecules 2020; 25:E5610. [PMID: 33260625 PMCID: PMC7730229 DOI: 10.3390/molecules25235610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/12/2020] [Accepted: 08/18/2020] [Indexed: 11/20/2022] Open
Abstract
Thiazinanes and its isomeric forms represent one of the most important heterocyclic compounds, and their derivatives represented a highly potent drug in disease treatment such as, 1,1-dioxido-1,2-thiazinan-1,6-naphthyridine, which has been shown to have anti-HIV activity by a mechanism that should work as anti-AIDS treatment, while (Z)-methyl 3-(naphthalen-1-ylimino)- 2-thia-4-azaspiro[5 5]undecane-4-carbodithioate showed analgesic activity, cephradine was used as antibiotic and chlormezanone was utilized as anticoagulants. All publications were interested in the chemistry of thiazine (partially or fully unsaturated heterocyclic six-membered ring containing nitrogen and sulfur), but no one was dealing with thiazinane itself which encouraged us to shed new light on these interesting heterocycles. This review was focused on the synthetic approaches of thiazinane derivatives and their chemical reactivity.
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Affiliation(s)
- Alaa A. Hassan
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt; (A.A.A.); (H.N.T.)
| | - Stefan Bräse
- Institute of Organic Chemistry, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
- Institute of Biological and Chemical Systems (IBCS-FMS), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ashraf A. Aly
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt; (A.A.A.); (H.N.T.)
| | - Hendawy N. Tawfeek
- Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt; (A.A.A.); (H.N.T.)
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7
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Jha M, Alam O, Naim MJ, Sharma V, Bhatia P, Sheikh AA, Nawaz F, Alam P, Manaithiya A, Kumar V, Nazar S, Siddiqui N. Recent advancement in the discovery and development of anti-epileptic biomolecules: An insight into structure activity relationship and Docking. Eur J Pharm Sci 2020; 153:105494. [PMID: 32730845 DOI: 10.1016/j.ejps.2020.105494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 12/22/2022]
Abstract
Although there have been many advancements in scientific research and development, the cause of epilepsy still remains an open challenge. In spite of high throughput research in the field of anti-epileptic drugs, efficacy void is still prevalent before the researchers. Researchers have persistently been exploring all the possibilities to curb undesirable side effects of the anti-epileptic drugs or looking for a more substantial approach to diminish or cure epilepsy. The drug development has shown a hope to medicinal chemists and researchers to carry further research by going through a substantial literature survey. This review article attempts to describe the recent developments in the anti-epileptic agents, pertaining to different molecular scaffolds considering their structure-activity relationship, docking studies and their mechanism of actions.
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Affiliation(s)
- Mukund Jha
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Ozair Alam
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India.
| | - Mohd Javed Naim
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Vrinda Sharma
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Parth Bhatia
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Aadil Ahmad Sheikh
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Farah Nawaz
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Perwaiz Alam
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Ajay Manaithiya
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Vivek Kumar
- Department of Cardiology, Fortis Heart Institute, New Delhi, 110025, India
| | - Shagufi Nazar
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Nadeem Siddiqui
- Medicinal Chemistry and Molecular Modelling Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
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8
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Grover G, Nath R, Bhatia R, Akhtar MJ. Synthetic and therapeutic perspectives of nitrogen containing heterocycles as anti-convulsants. Bioorg Med Chem 2020; 28:115585. [PMID: 32631563 DOI: 10.1016/j.bmc.2020.115585] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/31/2020] [Accepted: 06/02/2020] [Indexed: 02/07/2023]
Abstract
Epilepsy is one of the commonly prevailing neurological disorders. According to the reports, it is evident that about 80% of the epileptic cases have been observed in developing countries. Although there are many drugs with significant potency available in the market; still there is an issue of selectivity and toxicity. Therefore, continuous attempts have been made by the researchers to develop newer therapeutic agents against epilepsy. Many synthetic strategies have been available in the literature to synthesize various classes of anticonvulsants with promising activity. In the presented review, authors have summarized some newer synthetic routes being used for the synthesis of nitrogen-containing anticonvulsants taking a cue from the reported established anticonvulsant drugs viz. vigabatrin, sodium valproate, oxcarbazepine, felbamate, retigabine, and gabapentin. Various derivatives with the substitution for better anticonvulsant profile have been described in the figures for easy comparative study. The structure-activity relationship (SAR) of compounds with maximum potency has also been discussed. This article may serve as a boost for the researchers to modify the pre-existing synthetic routes as well as to improve potency and yield of the compounds.
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Affiliation(s)
- Gourav Grover
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, Ferozpur G.T. Road MOGA-142001, Punjab, India
| | - Rajarshi Nath
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, Ferozpur G.T. Road MOGA-142001, Punjab, India
| | - Rohit Bhatia
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, Ferozpur G.T. Road MOGA-142001, Punjab, India.
| | - Md Jawaid Akhtar
- Department of Pharmaceutical Chemistry, ISF College of Pharmacy, Ghal Kalan, Ferozpur G.T. Road MOGA-142001, Punjab, India.
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9
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Verma G, Khan MF, Akhtar W, Alam MM, Akhter M, Shaquiquzzaman M. A Review Exploring Therapeutic Worth of 1,3,4-Oxadiazole Tailored Compounds. Mini Rev Med Chem 2019; 19:477-509. [PMID: 30324877 DOI: 10.2174/1389557518666181015152433] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 12/27/2017] [Accepted: 09/30/2018] [Indexed: 02/01/2023]
Abstract
1,3,4-Oxadiazole, a five-membered aromatic ring can be seen in a number of synthetic molecules. The peculiar structural feature of 1,3,4-oxadiazole ring with pyridine type of nitrogen atom is beneficial for 1,3,4-oxadiazole derivatives to have effective binding with different enzymes and receptors in biological systems through numerous weak interactions, thereby eliciting an array of bioactivities. Research in the area of development of 1,3,4-oxadiazole-based derivatives has become an interesting topic for the scientists. A number of 1,3,4-oxadiazole based compounds with high therapeutic potency are being extensively used for the treatment of different ailments, contributing to enormous development value. This work provides a systematic and comprehensive review highlighting current developments of 1,3,4-oxadiazole based compounds in the entire range of medicinal chemistry such as anticancer, antifungal, antibacterial, antitubercular, anti-inflammatory, antineuropathic, antihypertensive, antihistaminic, antiparasitic, antiobesity, antiviral, and other medicinal agents. It is believed that this review will be of great help for new thoughts in the pursuit for rational designs for the development of more active and less toxic 1,3,4-oxadiazole based medicinal agents.
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Affiliation(s)
- Garima Verma
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Mohemmed F Khan
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Wasim Akhtar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Mohammad Mumtaz Alam
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Mymoona Akhter
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Mohammad Shaquiquzzaman
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
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10
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Kothayer H, Ibrahim SM, Soltan MK, Rezq S, Mahmoud SS. Synthesis, in vivo and in silico evaluation of novel 2,3-dihydroquinazolin-4(1H)-one derivatives as potential anticonvulsant agents. Drug Dev Res 2018; 80:343-352. [PMID: 30565722 DOI: 10.1002/ddr.21506] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/02/2018] [Accepted: 11/27/2018] [Indexed: 12/18/2022]
Abstract
In light of the pharmacophoric structural requirements for achieving anticonvulsant activity, a series of N-(1-methyl-4-oxo-2-un/substituted-1,2-dihydroquinazolin-3[4H]-yl)benzamide (4a-g) and N-(1-methyl-4-oxo-2-un/substituted-1,2-dihydroquinazolin-3[4H]-yl)-2-phenylacetamide (4h-n) derivatives were synthesized in two steps starting from the reaction of N-methyl isatoic anhydride with the appropriate hydrazide and followed by condensation with the appropriate aldehyde. The anticonvulsant activities of the synthesized compounds were evaluated according to the anticonvulsant drug development (ADD) programme protocol. Among the synthesized compounds, 4n showed promising activity in both the maximal electroshock (MES) and pentylenetetrazole (PTZ) tests with median effective dose (ED50 ) values of 40.7 and 6 mg/kg, respectively. The six most promising derivatives, 4b, 4a, 4c, 4f, 4j, and 4i, showed very low ED50 values in the PTZ test (3.1, 4.96, 8.68, 9.89, 12, and 13.53 mg/kg, respectively). All the tested compounds showed no to low neurotoxicity in the rotarod test with a wide therapeutic index. Docking studies of compound 4n suggested that GABAA binding could be the mechanism of action of these derivatives. The in silico drug likeliness parameters indicated that none of the designed compounds violate Lipinski's rule of five and that they are able to cross the blood-brain barrier. Hit, Lead & Candidate Discovery.
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Affiliation(s)
- Hend Kothayer
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Samy M Ibrahim
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Moustafa K Soltan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt.,Oman Pharmacy Institute, Ministry of Health, Muscat, Sultanate of Oman
| | - Samar Rezq
- Department of Pharmacology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Shireen S Mahmoud
- Department of Pharmacology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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11
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Noureldin NA, Kothayer H, Lashine ESM, Baraka MM, El-Eraky W, Awdan SAE. Synthesis, Anticonvulsant Activity, and SAR Study of Novel 4-Quinazolinone Derivatives. Arch Pharm (Weinheim) 2017; 350. [PMID: 28177550 DOI: 10.1002/ardp.201600332] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/21/2016] [Accepted: 01/04/2017] [Indexed: 11/09/2022]
Abstract
Series of N-(4-substitutedphenyl)-4-(1-methyl (or 1,2-dimethyl)-4-oxo-1,2-dihydroquinazolin-3(4H)-yl)-alkanamides (5a-j) and 4-chloro-N'-((1-methyl (or 1,2-dimethyl)-4-oxo-1,2-dihydroquinazolin-3(4H)-yl)-alkaloyl)benzohydrazides (6a-f) were designed based on the previously reported essential structural features for anticonvulsant activity. Several amino acids were incorporated within the synthesized quinazolin-4(3H)-ones to improve their bioavailability and the anticonvulsant activity. Synthesis of the target compounds was accomplished in four steps starting from the reaction between N-methyl isatoic anhydride and the appropriate amino acid. Then, the carboxylic acid group was utilized to synthesize the required final structures. The new quinazolinone derivatives were evaluated for their anticonvulsant activity according to the Anticonvulsant Drug Development (ADD) Program protocol. All the 16 new quinazolinones exhibited good anticonvulsant activity; especially 5f, 5b, and 5c showed superior anticonvulsant activities in comparison to the reference drug, with ED50 values of 28.90, 47.38, and 56.40 mg/kg, respectively.
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Affiliation(s)
- Nada A Noureldin
- Faculty of Pharmacy, Department of Medicinal Chemistry, Zagazig University, Zagazig, Egypt
| | - Hend Kothayer
- Faculty of Pharmacy, Department of Medicinal Chemistry, Zagazig University, Zagazig, Egypt
| | - El-Sayed M Lashine
- Faculty of Pharmacy, Department of Medicinal Chemistry, Zagazig University, Zagazig, Egypt
| | - Mohamed M Baraka
- Faculty of Pharmacy, Department of Medicinal Chemistry, Zagazig University, Zagazig, Egypt
| | - Wafaa El-Eraky
- Department of Pharmacology, National Research Center, Dokki, Cairo, Egypt
| | - Sally A El Awdan
- Department of Pharmacology, National Research Center, Dokki, Cairo, Egypt
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12
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Yang Z, Yang CH, Chen S, Chen X, Zhang L, Ren H. Catalyst free annulative thioboration of unfunctionalized olefins. Chem Commun (Camb) 2017; 53:12092-12095. [DOI: 10.1039/c7cc06800j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A direct and catalyst-free annulative thioboration of unfunctionalized olefins has been developed.
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Affiliation(s)
- Zhantao Yang
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- P. R. China
- School of Pharmaceutical Sciences
| | - Chun-Hua Yang
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- P. R. China
| | - Shiqi Chen
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- P. R. China
| | - Xixi Chen
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- P. R. China
| | - Litian Zhang
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- P. R. China
| | - Huijun Ren
- College of Chemistry and Chemical Engineering
- Anyang Normal University
- Anyang 455000
- P. R. China
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Saikia AK, Deka MJ, Borthakur U. Highly regioselective synthesis of 4-tosylthiomorpholine via intramolecular cyclization of N-tethered thioalkenols. Org Biomol Chem 2016; 14:10489-10495. [PMID: 27762410 DOI: 10.1039/c6ob01869f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A one-pot, metal-free procedure has been developed for the synthesis of 4-tosylthiomorpholine from N-tethered thioalkenols via bromination, cyclization and subsequent elimination reaction in good yields. The reaction is found to be highly regioselective.
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Affiliation(s)
- Anil K Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Manash J Deka
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Upasana Borthakur
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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Bioactive Thiazine and Benzothiazine Derivatives: Green Synthesis Methods and Their Medicinal Importance. Molecules 2016; 21:molecules21081054. [PMID: 27537865 PMCID: PMC6273871 DOI: 10.3390/molecules21081054] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 08/05/2016] [Accepted: 08/06/2016] [Indexed: 01/13/2023] Open
Abstract
Thiazines are a group of heterocyclic organic compounds that are still largely unexplored for their pharmacological activities. There are different available methods for the synthesis of thiazine derivatives in the literature. In this review, we discuss available methods of thiazine preparation through green synthesis methods. Beside their synthesis, many thiazine derivatives are biologically active and play an important role in the treatment of various diseases and show promising results of varying degrees, where they act as antibacterial, antifungal, antitumor, antimalarial, antineoplastic, antiviral, anti-inflammatory, analgesic and anticancer agents and thus they represent an interesting class of heterocyclic medicinal compounds worthy of further exploration.
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