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Sanad SMH, Mekky AEM. Three-component regioselective synthesis and antibacterial evaluation of new arene-linked bis(pyrazolo[1,5- a]pyrimidine) hybrids. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2191854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Mekky A, El-Idreesy TT, Sanad SMH. Chloramine Trihydrate-mediated Tandem Synthesis of New Pyrrole and/or Arene-linked Mono- and Bis(1,3,4-oxadiazole) Hybrids as Potential Bacterial Biofilm and MRSA Inhibitors. Chem Biodivers 2022; 19:e202200338. [PMID: 35818907 DOI: 10.1002/cbdv.202200338] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 07/12/2022] [Indexed: 11/06/2022]
Abstract
A two-step tandem protocol was used to prepare new pyrrole and/or arene-linked bis(1,3,4-oxadiazoles) as well as their mono-analogues. The appropriate aldehydes and benzohydrazides were first condensed in ethanol at 80 °C to yield the corresponding N-benzoylhydrazones. Without isolation, the previous intermediates were subjected to a chloramine trihydrate-mediated oxidative cyclization in DMSO at 180 °C to yield the target molecules. The antibacterial potency of the (pyrrole-arene)-linked hybrids exceeded the arene-linked hybrids, and the bis(1,3,4-oxadiazoles) exceeded their mono-analogues against six different ATCC strains. Furthermore, the antibacterial efficacy of bis(1,3,4-oxadiazoles) 11c, and 11f, which are linked to pyrrole, and (p-tolylthio)methyl units, was highest against S. aureus, E. coli, and P. aeruginosa strains. Their MIC ranged between 3.8 and 3.9 µM, while their MBC values ranged between 7.7 and 15.8 µM. Additionally, they showed promising bacterial biofilm inhibitory activity against the same strains tested, with IC50 values ranging from 4.7 to 5.3 μM. They were also effective against MRSA ATCC:33591, and ATCC:43300 strains, with MIC, and MBC values ranging from 3.8-7.9 and 7.7-15.8 μM, respectively. When tested against the MCF-10A cell line, hybrids 11c, and 11f are cytotoxic at concentrations that are more than 6 and 13-fold higher than their MIC values against the S. aureus, E. coli, and P. aeruginosa strains, respectively. This lends support to both hybrids' potential as safe antibacterial agents.
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Affiliation(s)
- Ahmed Mekky
- Cairo University Faculty of Science, Chemistry, Giza, 12613, Giza, EGYPT
| | - Tamer T El-Idreesy
- Cairo University Faculty of Science, Chemistry, Giza, 12613, Giza, EGYPT
| | - Sherif M H Sanad
- Cairo University Faculty of Science, Chemistry, Giza, 12613, Giza, EGYPT
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Al-Shuaeeb RAA, Alekseeva AY, Yashchenko NN, Zhitar SV, Mel’nik EA, Bardasov IN. Synthesis and Optical Properties of 3,4-Diamino-6-aryl-1H-pyrazolo[3,4-b]pyridine-5-carbonitriles. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428022070089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mekky AEM, Ahmed MSM, Sanad SMH, Abdallah ZA. Bis(benzofuran-enaminone) hybrid possessing piperazine linker: Versatile precursor for microwave assisted synthesis of bis(pyrido[2',3':3,4]pyrazolo[1,5-a]pyrimidines). SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2020.1867745] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Sanad SMH, Mekky AEM. Efficient synthesis and characterization of novel bis(chromenes) and bis(benzo[f]chromenes) linked to thiazole units. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1846748] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Mekky AEM, Sanad SMH, Said AY, Elneairy MAA. Synthesis, cytotoxicity, in-vitro antibacterial screening and in-silico study of novel thieno[2,3-b]pyridines as potential pim-1 inhibitors. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1778033] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | | | - Ahmed Y. Said
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Sanad SMH, Mekky AEM. Synthesis, in-vitro antibacterial and anticancer screening of novel nicotinonitrile-coumarin hybrids utilizing piperazine citrate. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1743318] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Sanad SMH, Ahmed AAM, Mekky AEM. Synthesis, in-vitro and in-silico study of novel thiazoles as potent antibacterial agents and MurB inhibitors. Arch Pharm (Weinheim) 2020; 353:e1900309. [PMID: 31967349 DOI: 10.1002/ardp.201900309] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/20/2019] [Accepted: 12/28/2019] [Indexed: 11/07/2022]
Abstract
Efficient procedures are herein reported for the synthesis of novel hybrid thiazoles via a one-pot three-component protocol. The protocol involves the reaction of novel aldehyde, thiosemicarbazide and halogen-containing reagents in solvent- and catalyst-free conditions. The structures of the new thiazoles were elucidated by elemental analyses and spectroscopic data. The in-vitro antibacterial screening and MurB enzyme inhibition assays were performed for the novel thiazoles. The thiazol-4(5H)-one derivative 6d, with p-MeO, exhibits the best antibacterial activities with minimum inhibitory concentration values of 3.9, 3.9, 7.8, and 15.6 μg/ml against Staphylococcus aureus, Klebsiella pneumoniae, Streptococcus mutans, and Escherichia coli, respectively, as compared to the reference antibiotic drugs. It also exhibits the highest inhibition of the MurB enzyme with an IC50 of 8.1 μM. The structure-activity relationship was studied to determine the effect of the structures of the newly prepared molecules on the strength of the antibacterial activities. Molecular docking was also performed to predict the binding modes of the new thiazoles in the active sites of the E. coli MurB enzyme.
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Affiliation(s)
- Sherif M H Sanad
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed A M Ahmed
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt.,Basic Science Department, Jouf University, Sakaka, Kingdom of Saudi Arabia
| | - Ahmed E M Mekky
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
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Sanad SMH, Ahmed AAM, Mekky AEM. Efficient synthesis and molecular docking of novel antibacterial pyrimidines and their related fused heterocyclic derivatives. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3789] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Ahmed A. M. Ahmed
- Chemistry Department, Faculty of ScienceCairo University Giza Egypt
- Preparatory Year DeanshipJouf University Sakaka Saudi Arabia
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Mekky AEM, Sanad SMH. Synthesis, Characterization, and Antimicrobial Evaluation of Novel Thiohydrazonates and Pyrazolo[3,4-b]pyridines. Polycycl Aromat Compd 2019. [DOI: 10.1080/10406638.2019.1631194] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Mekky AEM, Sanad SMH. Synthesis of novel bis(chromenes) and bis(chromeno[3,4-C]pyridine) incorporating piperazine moiety. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1595658] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Sanad SMH, Abdel‐Fattah AM, Attaby FA, Elneairy MAA. Utility of Pyridine‐2(1
H
)‐thiones in the Synthesis of Novel Bis‐Thieno[2,3‐
b
]pyridines and Their Fused Azines. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3537] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sherif M. H. Sanad
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
| | | | - Fawzy A. Attaby
- Chemistry Department, Faculty of ScienceCairo University Giza 12613 Egypt
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