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Metwally NH, Elgemeie GH, Fahmy FG. Synthesis and Biological Evaluation of Benzothiazolyl-pyridine Hybrids as New Antiviral Agents against H5N1 Bird Flu and SARS-COV-2 Viruses. ACS OMEGA 2023; 8:36636-36654. [PMID: 37841136 PMCID: PMC10568744 DOI: 10.1021/acsomega.3c01987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/18/2023] [Indexed: 10/17/2023]
Abstract
A novel series of benzothiazolyl-pyridine hybrids 8a-h and 14a-e were produced from the reaction of enamine derivative 4 with each of the arylcyanoacetamides 5a-h and cyanoacetohydrazides 9a-e. The new products were characterized by spectral techniques (IR, 1H NMR, 13C NMR, and MS). Biological evaluation of 8a-h and 14a-e in vitro against H5N1 and SARS-COV-2 viruses showed that several compounds had significant activity. Compounds 8f-h, which contain fluorine atoms, have better activity against H5N1 and anti-SARS-CoV-2 viruses than the other compounds included in this study. Compound 8h has a trifluoromethyl group at position-3 of the phenyl ring and exhibits a high activity against H5N1 virus with 93 and 60% inhibition at concentrations of 0.5 and 0.25 μmol/μL, respectively, among the tested compounds, and it also showed anti-SARS-CoV-2 virus with a half-maximum inhibition rate of 3.669 μM, among the remaining compounds. The mechanism of action of 8f-h, which is expected to be repurposed against COVID-19, was investigated. The results showed that the compounds have virucidal effects at different stages of the three mechanisms of action. Furthermore, compounds 8f-h were found to possess CoV-3CL protease inhibitory activities with IC50 values of 544.6, 868.2, and 240.6 μg/mL, respectively, compared to IC50 = 129.8 μg/mL of the standard drug lopinavir. Interestingly, compounds 8f-h also showed high inhibitory activity against the H5N1 virus as well as the SARS-CoV-2 virus. Moreover, compounds 8f-h fit admirably into the active site of the SARS-CoV-2 main protease (PDB ID: 6LU7) using the molecular docking Moe software 2015.10.
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Affiliation(s)
| | | | - Fatma Gomaa Fahmy
- Chemistry
Department, Faculty of Science, Cairo University, Cairo 12613, Egypt
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Abu-Zaied MA, Elgemeie GH, Halaweish FT, Hammad SF. Synthesis of novel pyridine and pyrimidine thioglycoside phosphoramidates for the treatment of COVID-19 and influenza A viruses. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2022; 41:851-877. [PMID: 35737369 DOI: 10.1080/15257770.2022.2085293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A novel series of pyridine, cytosine, and uracil thioglycoside analogs (4a-i, 9a,b, and 13a,b, respectively) and their corresponding phosphoramidates (6a-I, 10a,b, and 14a,b, respectively) were synthesized and assessed for their antiviral inhibitory activities in a dual-pathogen screening protocol against SARS-CoV-2 and influenza A virus (IAV). MTT cytotoxicity (TC50) and plaque reduction assays were used to explore inhibition and cytotoxicity percentage values for H5N1 influenza virus strain and the half-maximal cytotoxic concentration (CC50) and inhibitory concentration (IC50) for SARS-CoV-2 virus. Most of the tested compounds demonstrated dose-dependent inhibition behavior. Both cytosine thioglycoside phosphoramidates 10a and 10b exhibited the most potent profiles with 83% and 86% inhibition at 0.25 µM concentration against H5N1 and IC50 values of 12.16 µM, 14.9 µM against SARS-CoV-2, respectively. Moreover, compounds 10a and 10b have been shown to have the highest selectivity index (SI) among all the tested compounds against SARS-CoV-2 with 28.2 and 26.9 values, respectively.
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Affiliation(s)
| | - Galal H Elgemeie
- Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt
| | - Fathi T Halaweish
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota, USA
| | - Sherif F Hammad
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Helwan University, Helwan, Egypt.,Basic and Applied Sciences Institute, Egypt-Japan University of Science and Technology, New Borg El-Arab City, Egypt
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Metwally NH, Koraa TH, Sanad SMH. Green one-pot synthesis and in vitro antibacterial screening of pyrano[2,3- c]pyrazoles, 4 H-chromenes and pyrazolo[1,5- a]pyrimidines using biocatalyzed pepsin. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2074301] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Metwally NH, Elgemeie GH, Jones PG. Crystal structure of 2-(2,5-dimethoxyphenyl)benzo[ d]thiazole. ACTA CRYSTALLOGRAPHICA SECTION E CRYSTALLOGRAPHIC COMMUNICATIONS 2022; 78:445-448. [PMID: 35492282 PMCID: PMC8983990 DOI: 10.1107/s2056989022003279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 03/23/2022] [Indexed: 12/02/2022]
Abstract
The title compound was synthesized efficiently in the solid state by exploiting pepsin catalysis. The ring systems are nearly coplanar. A short intramolecular S⋯O=C contact is observed. The title compound, C15H13NO2S, was synthesized efficiently in the solid state by exploiting pepsin catalysis. The ring systems are nearly coplanar [interplanar angle of 5.38 (2)°] with an associated intramolecular S⋯O=C short contact of 2.7082 (4) Å. The packing involves C—H⋯O, C—H⋯π and π–π contacts.
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Gaikwad NB, Nirmale K, Sahoo SK, Ahmad MN, Kaul G, Shukla M, Nanduri S, Das Gupta A, Chopra S, Yaddanapudi MV. Design, synthesis, in silico, and in vitro evaluation of 3-phenylpyrazole acetamide derivatives as antimycobacterial agents. Arch Pharm (Weinheim) 2020; 354:e2000349. [PMID: 33351199 DOI: 10.1002/ardp.202000349] [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: 09/18/2020] [Revised: 11/12/2020] [Accepted: 11/21/2020] [Indexed: 11/12/2022]
Abstract
Mycobacterium tuberculosis (Mtb) is one of the most dangerous pathogens affecting immunocompetent and immunocompromised patients worldwide. Novel molecules, which are efficient and can reduce the duration of therapy against drug-resistant strains, are an urgent unmet need of the hour. In our current study, a series of new 2-(3-phenyl-1H-pyrazol-1-yl)acetamide and N'-benzylidene-2-(3-phenyl-1H-pyrazol-1-yl)acetohydrazide derivatives were designed, synthesized, and evaluated for their antimycobacterial potential. The biological evaluation revealed that 6b, 6m, 6l, 7a, and 7k exhibited selective and potent inhibitory activity against Mtb. Furthermore, compounds 6m and 7h were found to be nontoxic to Vero cells with CC50 of greater than 20 and 80 mg/ml, respectively, and exhibited promising selectivity indices (SI) of greater than 666 and 320, respectively. All derivatives exhibited excellent ADME (absorption, distribution, metabolism, and excretion) properties in silico. Also, all the derivatives were found compliant with Lipinski's rule of five, showing their druggability profile. Molecular docking insights of these derivatives have shown outstanding binding energies on the mycobacterial membrane protein large transporters. These results indicate that this scaffold may lead to a potential antimycobacterial drug candidate in the discovery of antitubercular agents.
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Affiliation(s)
- Nikhil B Gaikwad
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Krishna Nirmale
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Santosh K Sahoo
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Mohammad N Ahmad
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Grace Kaul
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Manjulika Shukla
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Srinivas Nanduri
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Arunava Das Gupta
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Madhavi V Yaddanapudi
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
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