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Mohammed HHH, Ali DME, Badr M, Habib AGK, Mahmoud AM, Farhan SM, Gany SSHAE, Mohamad SA, Hayallah AM, Abbas SH, Abuo-Rahma GEDA. Synthesis and molecular docking of new N4-piperazinyl ciprofloxacin hybrids as antimicrobial DNA gyrase inhibitors. Mol Divers 2023; 27:1751-1765. [PMID: 36152132 PMCID: PMC10415461 DOI: 10.1007/s11030-022-10528-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 09/11/2022] [Indexed: 11/24/2022]
Abstract
A series of N-4 piperazinyl ciprofloxacin derivatives as urea-tethered ciprofloxacin-chalcone hybrids 2a-j and thioacetyl-linked ciprofloxacin-pyrimidine hybrids 5a-i were synthesized. The target compounds were investigated for their antibacterial activity against S. aureus, P. aeruginosa, E. coli, and C. albicans strains, respectively. Ciprofloxacin derivatives 2a-j and 5a-i revealed broad antibacterial activity against either Gram positive or Gram negative strains, with MIC range of 0.06-42.23 µg/mL compared to ciprofloxacin with an MIC range of 0.15-3.25 µg/mL. Among the tested compounds, hybrids 2b, 2c, 5a, 5b, 5h, and 5i exhibited remarkable antibacterial activity with MIC range of 0.06-1.53 µg/mL against the tested bacterial strains. On the other hand, compounds 2c, 2e, 5c, and 5e showed comparable antifungal activity to ketoconazole against candida albicans with MIC range of 2.03-3.89 µg/mL and 2.6 µg/mL, respectively. Further investigations showed that some ciprofloxacin hybrids have inhibitory activity against DNA gyrase as potential molecular target compared to ciprofloxacin with IC50 range of 0.231 ± 0.01-7.592 ± 0.40 µM and 0.323 ± 0.02 µM, respectively. Docking studies of compounds 2b, 2c, 5b, 5c, 5e, 5h, and 5i on the active site of DNA gyrase (PDB: 2XCT) confirmed their ability to form stable complex with the target enzyme like that of ciprofloxacin.
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Affiliation(s)
- Hamada H H Mohammed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sohag University, Sohag, 82524, Egypt.
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New Minia City, 61768, Egypt.
| | | | - Mohamed Badr
- Department of Biochemistry, Faculty of Pharmacy, Menoufia University, Menoufia, Egypt
| | - Ahmed G K Habib
- Department of Biotechnology and Life Sciences, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt
| | - Abobakr Mohamed Mahmoud
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, New Minia City, 61768, Egypt
| | - Sarah M Farhan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Deraya University, New Minia City, 61768, Egypt
| | | | - Soad A Mohamad
- Department of Pharmaceutics and Clinical Pharmacy, Faculty of Pharmacy, Deraya University, New Minia, Minya, 61768, Egypt
| | - Alaa M Hayallah
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, El Fateh, 71526, Egypt
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Sphinx University, New Assiut, Egypt
| | - Samar H Abbas
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Gamal El-Din A Abuo-Rahma
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New Minia City, 61768, Egypt.
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Azzam RA, Elboshi HA, Elgemeie GH. Synthesis, Physicochemical Properties and Molecular Docking of New Benzothiazole Derivatives as Antimicrobial Agents Targeting DHPS Enzyme. Antibiotics (Basel) 2022; 11:antibiotics11121799. [PMID: 36551457 PMCID: PMC9774648 DOI: 10.3390/antibiotics11121799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
The drug-resistance problem is widely spread and becoming more common in community-acquired and nosocomial strains of bacteria. Therefore, finding new antimicrobial agents remains an important drug target. From this perspective, new derivatives of benzothiazole were synthesized and evaluated for their antimicrobial activity and ability to inhibit the DHPS enzyme. The synthesis was carried out by the reaction of benzothiazole N-arylsulphonylhydrazone with N-aryl-2-cyano-3-(dimethylamino)acrylamide, N-aryl-3-(dimethylamino)prop-2-en-1-one, arylaldehydes or diazonium salt of arylamine derivatives, which led to the formation of N-arylsulfonylpyridones 6a-d (yield 60-70%) and 12a-c (yield 50-60%),N-(2-(benzo[d]thiazole-2-yl)-3-arylacryloyl-4-methylsulfonohydrazide 14a-c (yield 60-65%), 4-(benzo[d]thiazole-2-yl)-5-aryl-1H-pyrazol-3(2H)-one 16a-c (yield 65-75%), and N'-(2-(benzo[d]thiazol-2-yl)-2-(2-arylhydrazono)acetyl)-4-arylsulfonohydrazide 19a-e (yield 85-70%). The antimicrobial evaluations resulted into a variety of microbial activities against the tested strains. Most compounds showed antimicrobial activity against S. aureus with an MIC range of 0.025 to 2.609 mM. The most active compound, 16c, exhibited superior activity against the S. aureus strain with an of MIC 0.025 mM among all tested compounds, outperforming both standard drugs ampicillin and sulfadiazine. The physicochemical-pharmacokinetic properties of the synthesized compounds were studied, and it was discovered that some compounds do not violate rule of five and have good bioavailability and drug-likeness scores. The five antimicrobial potent compounds with good physicochemical-pharmacokinetic properties were then examined for their inhibition of DHPS enzyme. According to the finding, three compounds, 16a-c, had IC50 values comparable to the standard drug and revealed that compound 16b was the most active compound with an IC50 value of 7.85 μg/mL, which is comparable to that of sulfadiazine (standard drug) with an IC50 value of 7.13 μg/mL. A docking study was performed to better understand the interaction of potent compounds with the binding sites of the DHPS enzyme, which revealed that compounds 16a-c are linked by two arene-H interactions with Lys220 within the PABA pocket.
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Haroun M. Review on the Developments of Benzothiazole-containing Antimicrobial Agents. Curr Top Med Chem 2022; 22:2630-2659. [PMID: 36503470 DOI: 10.2174/1568026623666221207161752] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/12/2022] [Accepted: 11/14/2022] [Indexed: 12/14/2022]
Abstract
The infectious diseases caused by bacterial resistance to antibiotics constitute an increasing threat to human health on a global scale. An increasing number of infections, including tuberculosis, pneumonia, salmonellosis and gonorrhea, are becoming progressively challenging to cure owing to the ineffectiveness of current clinically used antibiotics and presents a serious health threat worldwide in medical community. The major concern of this global health threat is the ability of microorganisms to develop one or several mechanisms of resistance to antibiotics, making them inefficient to therapeutic treatment. The quest for discovering novel scaffold with antimicrobial property is particularly in great need to face future challenges in hospital and healthcare settings. Hence, the development of benzothiazoles is of considerable interest to medicinal chemists. Benzothiazole, being part of an important class of heterocyclic scaffold retains a wide spectrum of various attractive pharmacological activities. Antibiotic resistance represents an increasing burden comprising medical cost, hospital stay and mortality. Several derivatives containing a benzothiazole scaffold, reported in the literature, were found to display remarkable potencies towards diverse Grampositive and Gram-negative bacterial pathogens. The principal focus concerns the antibacterial potential of benzothiazole-based derivatives as antimicrobial agents interacting with targets in bacterial pathogens. In this review, we also disclose the significance of the benzothiazole moiety in the discovery of new antibacterial compounds, the potential of benzothiazole-based derivatives in the case of resistant bacterial strains, optimization of their antibacterial activity, and their future perspectives. The structure-activity relationship study and the mode of action of the title derivatives are highlighted too.
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Affiliation(s)
- Michelyne Haroun
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, 31982, Saudi Arabia
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4
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Azzam R, Gad NM, Elgemeie GH. Novel Thiophene Thioglycosides Substituted with the Benzothiazole Moiety: Synthesis, Characterization, Antiviral and Anticancer Evaluations, and NS3/4A and USP7 Enzyme Inhibitions. ACS OMEGA 2022; 7:35656-35667. [PMID: 36249371 PMCID: PMC9557897 DOI: 10.1021/acsomega.2c03444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/14/2022] [Indexed: 05/24/2023]
Abstract
Novel derivatives of benzothiazole-2-thiophene S-glycoside were synthesized and tested for their antiviral and anticancer potency and NS3/4A and USP7 enzyme inhibitions. The ring system was formed by first synthesizing new derivatives of 5-mercaptothiophene substituted with the benzothiazole moiety, followed by coupling with various halo sugar derivatives. New compounds were tested in vitro for the cytotoxic effect on five types of normal cell lines and for antiviral activity using a plaque reduction assay against CBV4, HSV-1, HCVcc genotype 4 viruses, HAV HM 175, and HAdV7. Notably, three compounds demonstrated substantial IC50, CC50, and SI values against HSV-1 with a viral reduction of 80% or more. Two substances have demonstrated a reduction of more than 50% in CBV4 and HCVcc viruses. The effectiveness of the compounds against HSV-1 and HCVcc was tested for their capability to inhibit NS3/4A protease and USP7 enzyme. Additionally, a panel of 60 human cancer cells was used to investigate the ability of the newly synthesized compounds to inhibit the in vitro tumor growth. The results revealed that two compounds, 6a and 6c, have an inhibitory effect on most cancer types, whereas 6d and 6f inhibited only three and two cell lines, respectively.
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5
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Korkmaz A, Bursal E. Benzothiazole sulfonate derivatives bearing azomethine: Synthesis, characterization, enzyme inhibition, and molecular docking study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132641] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sangwan S, Yadav N, Kumar R, Chauhan S, Dhanda V, Walia P, Duhan A. A score years’ update in the synthesis and biological evaluation of medicinally important 2-pyridones. Eur J Med Chem 2022; 232:114199. [DOI: 10.1016/j.ejmech.2022.114199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/06/2022] [Accepted: 02/10/2022] [Indexed: 12/18/2022]
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Wang Y, Zhou R, Sun N, He M, Wu Y, Xue W. Synthesis and antibacterial activity of novel 1,4‐pentadien‐3‐one derivatives bearing a benzothiazole moiety. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yihui Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals Guizhou University Guiyang China
- Monitoring of Four Families Anshun Ecological Environment Monitoring Center Anshun China
| | - Ran Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals Guizhou University Guiyang China
| | - Nan Sun
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals Guizhou University Guiyang China
| | - Ming He
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals Guizhou University Guiyang China
| | - Yongjun Wu
- Institute of Agro‐bioengineering/College of Life Sciences Guizhou University Guiyang China
| | - Wei Xue
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals Guizhou University Guiyang China
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Benzothiazole-based colorimetric chemosensors bearing naphthol aldehyde unit: Synthesis, characterization, selective detection of hypochlorite and its application as test strips. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Chen K, Li X, Huang B, Ye Q, Xiao W, Guan X, Chen L, Peng Y. Thiophenic silicon phthalocyanines: synthesis, characterization, and photophysical properties. NEW J CHEM 2021. [DOI: 10.1039/d0nj04355a] [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
The synthesis, photophysical properties, and in vitro photodynamic therapy efficacies of three thiophenic silicon phthalocyanines were studied.
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Affiliation(s)
- Kuizhi Chen
- College of Chemistry & Materials
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
- Fujian Provincial Key Laboratory of Polymer Materials
- Fujian Normal University
- Fuzhou
| | - Xia Li
- College of Chemistry & Materials
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
- Fujian Provincial Key Laboratory of Polymer Materials
- Fujian Normal University
- Fuzhou
| | - Bingcheng Huang
- College of Chemistry & Materials
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
- Fujian Provincial Key Laboratory of Polymer Materials
- Fujian Normal University
- Fuzhou
| | - Qiuhao Ye
- College of Chemistry & Materials
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
- Fujian Provincial Key Laboratory of Polymer Materials
- Fujian Normal University
- Fuzhou
| | - Wenling Xiao
- College of Chemistry & Materials
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
- Fujian Provincial Key Laboratory of Polymer Materials
- Fujian Normal University
- Fuzhou
| | - Xinqiao Guan
- College of Chemistry & Materials
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
- Fujian Provincial Key Laboratory of Polymer Materials
- Fujian Normal University
- Fuzhou
| | - Limin Chen
- Fujian Medical University
- Affiliated Hospital of Fujian Medical University
- Fuzhou 350004
- China
| | - Yiru Peng
- College of Chemistry & Materials
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
- Fujian Provincial Key Laboratory of Polymer Materials
- Fujian Normal University
- Fuzhou
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10
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Azzam R, Elboshi HA, Elgemeie GH. Novel Synthesis and Antiviral Evaluation of New Benzothiazole-Bearing N-Sulfonamide 2-Pyridone Derivatives as USP7 Enzyme Inhibitors. ACS OMEGA 2020; 5:30023-30036. [PMID: 33251438 PMCID: PMC7689895 DOI: 10.1021/acsomega.0c04424] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 10/29/2020] [Indexed: 05/10/2023]
Abstract
In this article, a series of benzothiazole-bearing N-sulfonamide 2-pyridone derivatives were synthesized via the reaction of benzothiazole sulfonylhydrazide with sodium salts of both (hydroxymethylene) cycloalkanones and unsaturated ketones, as well as ethoxymethylene derivatives. The structures of the resultant compounds were confirmed using IR, 1H NMR, 13C NMR, 1H-1H correlation spectroscopy (COSY), 1H-13C heteronuclear multiple bond coherence (HMBC), and 1H-13C heteronuclear multiple quantum coherence (HSQC) spectral analysis and elemental analysis. The newly synthesized compounds were evaluated in vitro for their antiviral activities against the HSV-1, HAV HM175, HCVcc genotype 4, CBV4, and HAdV7 viruses. Additionally, the compounds were examined for their cytotoxic effect on five normal cell lines. It was observed that five compounds were found to possess viral reduction of 50% or more against CBV4 with significant IC50, CC50, and SI values. In the case of HSV-1 and HAV HM175 viruses, three compounds have shown more than 50% reduction, while in the case of HCVcc genotype 4 and HAdV7 viruses, only two compounds demonstrated more than 50% reduction. Furthermore, the physicochemical properties of the most active compounds were evaluated. The two most potent compounds against HSV-1 virus, 7e and 13a, were evaluated for their inhibitory activity against USP7. Docking studies using Molecular Operating Environment (MOE) were used to identify the interactions between 7e and 13a compounds and the active site of the USP7 enzyme.
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11
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Importance of Fluorine in Benzazole Compounds. Molecules 2020; 25:molecules25204677. [PMID: 33066333 PMCID: PMC7587361 DOI: 10.3390/molecules25204677] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 12/31/2022] Open
Abstract
Fluorine-containing heterocycles continue to receive considerable attention due to their unique properties. In medicinal chemistry, the incorporation of fluorine in small molecules imparts a significant enhancement their biological activities compared to non-fluorinated molecules. In this short review, we will highlight the importance of incorporating fluorine as a basic appendage in benzothiazole and benzimidazole skeletons. The chemistry and pharmacological activities of heterocycles containing fluorine during the past years are compiled and discussed.
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Novel thiophene-benzothiazole derivative azomethine and amine compounds: Microwave assisted synthesis, spectroscopic characterization, solvent effects on UV–Vis absorption and DFT studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128354] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Azzam RA, Osman RR, Elgemeie GH. Efficient Synthesis and Docking Studies of Novel Benzothiazole-Based Pyrimidinesulfonamide Scaffolds as New Antiviral Agents and Hsp90α Inhibitors. ACS OMEGA 2020; 5:1640-1655. [PMID: 32010839 PMCID: PMC6990646 DOI: 10.1021/acsomega.9b03706] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 12/20/2019] [Indexed: 05/04/2023]
Abstract
A series of novel substituted 2-pyrimidylbenzothiazoles incorporating either sulfonamide moieties or the amino group at C2 of the pyrimidine ring were synthesized and evaluated for its antiviral potency. The novel synthesis of the ring system was carried out by reacting guanidine or N-arylsulfonated guanidine with different derivatives of ylidene benzothiazole based on Michael addition pathways. The antiviral activity of the newly synthesized compounds was examined by a plaque reduction assay against HSV-1, CBV4, HAV HM 175, HCVcc genotype 4 viruses, and HAdV7. In the case of HSV-1, it was determined that 5 out of the 21 synthesized compounds exhibited superior viral reduction in the range of 70-90% with significant IC50, CC50, and SI values as compared with acyclovir. In the case of CBV4, nine compounds have shown more than 50% reduction. Comparable results were obtained for seven of these synthesized compounds when evaluated against HAV with only a couple of them showing 50% reduction or more against HCVcc genotype 4. Remarkably, one compound, 9a, has shown broad action against all five examined viruses, rendering it as potentially an effective antiviral agent. The five potent compounds 9a, 9b, 14b, 14g, and 14h against HSV-1 have also presented inhibitory activity against the Hsp90α protein with IC50 in the range of 4.87-10.47 μg/mL. Interestingly, a combination of the potent synthesized compounds with acyclovir led to IC50 values lower than that of acyclovir alone. The potent compounds 9a, 9b, 14b, 14g, and 14h were also docked inside the active site of Hsp90α to assess the interaction pattern between the tested compounds and the active site of the protein.
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Jadhav C, Nipate AS, Chate AV, Songire VD, Patil AP, Gill CH. Efficient Rapid Access to Biginelli for the Multicomponent Synthesis of 1,2,3,4-Tetrahydropyrimidines in Room-Temperature Diisopropyl Ethyl Ammonium Acetate. ACS OMEGA 2019; 4:22313-22324. [PMID: 31909314 PMCID: PMC6941212 DOI: 10.1021/acsomega.9b02286] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 11/19/2019] [Indexed: 05/13/2023]
Abstract
The diisopropyl ethyl ammonium acetate (DIPEAc)-promoted Biginelli protocol has been developed for the first time by a successive one-pot three-component reaction of aldehydes, ethylcyanoacetate/ethyl acetoacetate, and thiourea/urea to afford pharmacologically promising 1,2,3,4-tetrahydropyrimidines in high yields at room temperature. The key benefits of the present scheme are the capability to allow a variability of functional groups, short reaction times, easy workup, high yields, recyclability of the catalyst, and solvent-free conditions, thus providing economic and environmental advantages. In addition, a series of 4-oxo-6-aryl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitriles analogues were synthesized and selected for their in vitro antifungal and antibacterial activities.
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Affiliation(s)
- Chetan
K. Jadhav
- Department
of Chemistry, Dr. Babasaheb Ambedkar Marathwada
University, Aurangabad 431004, Maharashtra, India
| | - Amol S. Nipate
- Department
of Chemistry, Dr. Babasaheb Ambedkar Marathwada
University, Aurangabad 431004, Maharashtra, India
| | - Asha V. Chate
- Department
of Chemistry, Dr. Babasaheb Ambedkar Marathwada
University, Aurangabad 431004, Maharashtra, India
| | - Vishal D. Songire
- Department
of Chemistry, Dr. Babasaheb Ambedkar Marathwada
University, Aurangabad 431004, Maharashtra, India
| | - Anil P. Patil
- Institute
of Microbial Technology (IMTECH), Chandigarh 160036, India
| | - Charansingh. H. Gill
- Department
of Chemistry, Dr. Babasaheb Ambedkar Marathwada
University, Aurangabad 431004, Maharashtra, India
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Isothioureas, Ureas, and Their N-Methyl Amides from 2-Aminobenzothiazole and Chiral Amino Acids. Molecules 2019; 24:molecules24183391. [PMID: 31540462 PMCID: PMC6767222 DOI: 10.3390/molecules24183391] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/06/2019] [Accepted: 09/10/2019] [Indexed: 11/18/2022] Open
Abstract
In this investigation, the reaction of 2-dithiomethylcarboimidatebenzothiazole with a series of six chiral amino-acids was studied. The reaction proceeds through the isolable sodium salt of SMe-isothiourea carboxylates as intermediates, whose reaction with methyl iodide in stirring DMF as solvent affords SMe-isothiourea methyl esters. The presence of water in the reaction leads to the corresponding urea carboxylates as isolable intermediates, whose methyl esters were obtained. Finally, the urea N-methyl amide derivatives were isolated when SMe-isothiourea or urea methyl esters were reacted with methylamine in the presence of water. The structures of synthesized compounds were established by 1H and 13C nuclear magnetic resonance and the structures of SMe-isothiourea methyl esters derived from (l)-glycine, (l)-alanine, (l)-phenylglycine, and (l)-leucine, by X-ray diffraction analysis. This methodology allows to functionalize 2-aminobenzothiazole with SMe-isothiourea, urea, and methylamide groups derived from chiral amino acids to get benzothiazole derivatives containing coordination sites and hydrogen bonding groups. Further research on the biological activities of some of these derivatives is ongoing.
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16
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Hassan AY, Sarg MT, Hussein EM. Design, Synthesis, and Anticancer Activity of Novel Benzothiazole Analogues. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3524] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aisha Y. Hassan
- Department of Chemistry, Faculty of Science (Girls) Al‐Azhar University Cairo Egypt
| | - Marwa T. Sarg
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Girls) Al‐Azhar University Cairo Egypt
| | - Ebtehal M. Hussein
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Girls) Al‐Azhar University Cairo Egypt
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17
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Gandhi D, Agarwal S. Urea nitrate catalyzed synthesis of 2-arylbenzothiazoles using the grindstone technique. HETEROCYCL COMMUN 2018. [DOI: 10.1515/hc-2018-0133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
An efficient, green and environmentally friendly grindstone method for the synthesis of 2-arylbenzothiazole derivatives in the presence of urea nitrate as the catalyst under solvent-free conditions was developed. All products were characterized by elemental analysis and spectral methods.
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18
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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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Synthesis and evaluation of steroidal thiazoline conjugates as potential antiviral agents. Future Med Chem 2018; 10:2589-2605. [PMID: 30499701 DOI: 10.4155/fmc-2018-0075] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aim: Many heterocyclic compounds derived from natural steroids exhibited broad activities, so this work focused on the investigations on a series of steroidal thiazoline conjugates as antiviral agents. Materials & methods: A series of steroid derivatives containing thiazoline heterocycles were designed and synthesized via a convenient condensation procedure. The compounds were screened for their potential antivirus activities against Enterovirus 71 (EV71) and Coxsackie Virus Type B (CVB3). Results and Conclusion: The in vitro bioassay indicated that compounds 5b, 5g and 5i exhibited excellent antiviral effects on EV71, and compounds 5b, 5e, 6c and 6g presented better antiviral activities against CVB3 compared with the controls ribavirin or pirodavir. These results indicate that these steroidal thiazoline conjugates might be feasible therapeutic candidates against EV71 infection, which might also be considered as promising compounds for optimization of potential antivirus agents.
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20
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Disazo dyes containing pyrazole and benzothiazole moieties: synthesis, characterization, absorption characteristics and tautomeric structures. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3021-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Zha GF, Leng J, Darshini N, Shubhavathi T, Vivek HK, Asiri AM, Marwani HM, Rakesh KP, Mallesha N, Qin HL. Synthesis, SAR and molecular docking studies of benzo[d]thiazole-hydrazones as potential antibacterial and antifungal agents. Bioorg Med Chem Lett 2017; 27:3148-3155. [PMID: 28539243 DOI: 10.1016/j.bmcl.2017.05.032] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/19/2017] [Accepted: 05/10/2017] [Indexed: 11/26/2022]
Abstract
A series of new benzo[d]thiazole-hydrazones analogues were synthesized and screened for their in vitro antibacterial and antifungal activities. The results revealed that compounds 13, 14, 15, 19, 20, 28 and 30 exhibited superior antibacterial potency compared to the reference drug chloramphenicol and rifampicin. Compounds 5, 9, 10, 11, 12, 28 and 30 were found to be good antifungal activity compared to the standard drug ketoconazole. A preliminary study of the structure-activity relationship (SAR) revealed that the antimicrobial activity depended on the effect of different substituents on the phenyl ring. The electron donating (OH and OCH3) groups presented in the analogues, increase the antibacterial activity (except compound 12), interestingly, while the electron withdrawing (Cl, NO2, F and Br) groups increase the antifungal activity (except compound 19 and 20). In addition, analogues containing thiophene (28) and indole (30) showed good antimicrobial activities. Whereas, aliphatic analogues (24-26) shown no activities in both bacterial and fungal stains even in high concentrations (100µg/mL). Molecular docking studies were performed for all the synthesized compounds of which compounds 11, 19 and 20 showed the highest glide G-score.
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Affiliation(s)
- Gao-Feng Zha
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, PR China
| | - Jing Leng
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, PR China
| | - N Darshini
- SRI RAM CHEM, R & D Centre, Plot No. 31, JCK Industrial Park, Belagola Industrial Area, Mysore 570016, Karnataka, India
| | - T Shubhavathi
- SRI RAM CHEM, R & D Centre, Plot No. 31, JCK Industrial Park, Belagola Industrial Area, Mysore 570016, Karnataka, India
| | - H K Vivek
- SRI RAM CHEM, R & D Centre, Plot No. 31, JCK Industrial Park, Belagola Industrial Area, Mysore 570016, Karnataka, India
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hadi M Marwani
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - K P Rakesh
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, PR China.
| | - N Mallesha
- SRI RAM CHEM, R & D Centre, Plot No. 31, JCK Industrial Park, Belagola Industrial Area, Mysore 570016, Karnataka, India.
| | - Hua-Li Qin
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, PR China.
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22
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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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23
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Swami S, Devi N, Agarwala A, Singh V, Shrivastava R. ZnO nanoparticles as reusable heterogeneous catalyst for efficient one pot three component synthesis of imidazo-fused polyheterocycles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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24
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Swami S, Agarwala A, Shrivastava R. Sulfonic acid functionalized silica-coated CuFe2O4 core–shell nanoparticles: an efficient and magnetically separable heterogeneous catalyst for the synthesis of 2-pyrazole-3-amino-imidazo-fused polyheterocycles. NEW J CHEM 2016. [DOI: 10.1039/c6nj02264b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of easily separable magnetic core–shell nanoparticles and their efficient use as catalyst in a multicomponent reaction.
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Affiliation(s)
- Suman Swami
- Department of Chemistry
- Manipal University Jaipur
- Jaipur-303007
- India
| | - Arunava Agarwala
- Department of Chemistry
- Manipal University Jaipur
- Jaipur-303007
- India
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25
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Yu X, Shi L, Ke S. Acylhydrazone derivatives as potential anticancer agents: Synthesis, bio-evaluation and mechanism of action. Bioorg Med Chem Lett 2015; 25:5772-6. [PMID: 26546214 DOI: 10.1016/j.bmcl.2015.10.069] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 09/18/2015] [Accepted: 10/22/2015] [Indexed: 01/28/2023]
Abstract
A series of novel acylhydrazone derivatives were designed, synthesized and evaluated for their potential cytotoxic effects against human cancer cell lines. The preliminary results indicated that some of the obtained compounds (such as 8b, 13c) exhibited good to moderate cytotoxic activities against human HepG2, Huh-7, and BCG-823 cell lines. Especially, compounds 8c and 8e presented obviously selective cytotoxic activities against Huh-7 in vitro (8c, IC50=7.74±2.18μg/mL; 8e, IC50=4.46±1.05μg/mL) compared to 5-FU (IC50=10.41±3.41μg/mL). The highly potential compounds to induce apoptosis in HepG2 cells were analyzed by flow cytometry, and the apoptotic effects of compounds 8b and 13c were further evaluated using Annexin V-FITC/propidium iodide dual staining assay.
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Affiliation(s)
- Xifang Yu
- Huangshi Central Hospital, Hubei Polytechnic University, Huangshi 435000, People's Republic of China
| | - Liqiao Shi
- National Biopesticide Engineering Research Center, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China
| | - Shaoyong Ke
- National Biopesticide Engineering Research Center, Hubei Academy of Agricultural Sciences, Wuhan 430064, People's Republic of China.
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26
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Dai Y, Xie C, Wu L, Mei H, Soloshonok VA, Han J, Pan Y. Asymmetric synthesis of amino-benzothiazol derivatives by additions of 2-lithiated benzothiazoles to (S)-N-t-butylsulfinyl-ketimines. RSC Adv 2015. [DOI: 10.1039/c4ra15405c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We reported the asymmetric Mannich reactions between lithium-benzothiazoles and (S)-N-tert-butanesulfinylketimines, which gave unknown type of amino-benzothiazol derivatives of high pharmaceutical potential with up to 96% yields and 99 : 1 diastereoselectivities.
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Affiliation(s)
- Yanling Dai
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing
- China
| | - Chen Xie
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing
- China
| | - Lingmin Wu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing
- China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing
- China
| | - Vadim A. Soloshonok
- Department of Organic Chemistry I
- Faculty of Chemistry
- University of the Basque Country UPV/EHU
- 20018 San Sebastian
- Spain
| | - Jianlin Han
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing
- China
| | - Yi Pan
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing
- China
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27
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A comprehensive account of spectral, Hartree Fock, and Density Functional Theory studies of 2-chlorobenzothiazole. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.09.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Tailor YK, Khandelwal S, Kumari Y, Awasthi K, Kumar M. An efficient one pot three-component nanocatalyzed synthesis of spiroheterocycles using TiO2 nanoparticles as a heterogeneous catalyst. RSC Adv 2015. [DOI: 10.1039/c5ra04863j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient, environmentally benign isocyanide-based domino protocol is presented for synthesizing spiroheterocycles with 2-amino benzothiazole/1,3,4-thiadiazole, cyclohexyl/tert-butyl isocyanides and isatines/cyclic carbonyls, catalyzed by recyclable nanocrystalline TiO2.
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Affiliation(s)
| | | | - Yogita Kumari
- Soft Materials Lab
- Department of Physics
- Malaviya National Institute of Technology
- Jaipur
- India
| | - Kamlendra Awasthi
- Soft Materials Lab
- Department of Physics
- Malaviya National Institute of Technology
- Jaipur
- India
| | - Mahendra Kumar
- Department of Chemistry
- University of Rajasthan
- Jaipur
- India
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29
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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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30
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Mei H, Dai Y, Wu L, Soloshonok VA, Han J, Pan Y. Mannich-Type Addition Reactions between Lithium Derivatives of Benzo[d]thiazoles andN-tert-Butylsulfinyl-3,3,3-trifluoroacetaldimine: Convenient Generalized Synthesis of Bis(benzothiazole)s. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400118] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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