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Mekky AEM, Sanad SMH. New Bis(pyrazolo[5,1-b]quinazolines) and Bis(9H-xanthenediones) Linked to Alkane Cores: One-Pot Synthesis, Antibacterial Screening, and SAR Study. Chem Biodivers 2024:e202401700. [PMID: 39284770 DOI: 10.1002/cbdv.202401700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Accepted: 09/04/2024] [Indexed: 10/27/2024]
Abstract
Effective one-pot methods were used to synthesize some new alkane-linked bis(pyrazolo[5,1-b]quinazolines) and bis(9H-xanthenediones). The first series was produced, in 80-88 % yields, via the reaction of one equivalent of the appropriate bis(aldehydes) with two equivalents of 1H-pyrazole-3,5-diamine and dimedone in DMF at 150 °C for 5-6 h. The second series was prepared, in 82-89 % yields, via the reaction one equivalent of the appropriate bis(aldehydes) with four equivalents of dimedone in acetic acid at 120 °C for 4-5 h. The new products displayed a broad range of antibacterial activity against different bacterial strains. Generally, the antibacterial activity of the alkane-linked bis(pyrazolo[5,1-b]quinazoline) units is more than 2-fold their bis(9H-xanthenedione) analogues. The (p-tolylthio)methyl)-linked bis(pyrazolo[5,1-b]quinazolines) demonstrate the best antibacterial activity with MIC/MBC values up to 3.3/6.6 μM.
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Affiliation(s)
- Ahmed E M Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Sherif M H Sanad
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
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Elneairy MAA, Youssef EGN, Ebrahim SAA, Mohammad NEM, Abd El-Rahman NMS, Elhewaty ASM, Sanad SMH, Mekky AEM. MRSA Inhibitory Activity of Some New Pyrazolo[1,5-a]pyrimidines Linked to Arene and/or Furan or Thiophene Units. Chem Biodivers 2024:e202402031. [PMID: 39284766 DOI: 10.1002/cbdv.202402031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2024] [Accepted: 09/16/2024] [Indexed: 11/02/2024]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a major contributor to hospital-acquired infections and is highly resistant to treatment. Ongoing research focuses on developing new antimicrobial medications to prevent the spread of resistance. A facile method was employed to efficiently synthesize new pyrazolo[1,5-a]pyrimidines in 84-93 % yields by reacting 4-benzyl-1H-pyrazole-3,5-diamine with the respective α,β-unsaturated ketones. The reaction was carried out in ethanol containing 1.2 equivalents of potassium hydroxide at reflux for 5-6 h. The new products are attached to a para-substituted aryl group with variable electronic properties at pyrazolopyrimidine-C5, in addition to one of three units at C7, namely phenyl, thiophen-2-yl, or furan-2-yl units. A wide spectrum of antibacterial activity was displayed by the new pyrimidines against six different bacterial strains. In general, pyrimidines attached to furan-2-yl units at C7, in addition to another aryl unit at C5, attached to 4-Me or 4-OMe groups, demonstrate significant antibacterial activity, particularly against S. aureus strain. They had MIC/MBC of 2.5/5.1 and 2.4/4.9 μM, respectively, which exceeded that of ciprofloxacin. Moreover, they demonstrate more effective MRSA inhibitory activity than linezolid, with MIC/MBC values up to 4.9/19.7 and 2.4/19.7 μM against MRSA ATCC:33591 and ATCC:43300 strains, respectively.
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Affiliation(s)
| | - Emad G N Youssef
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Sama A A Ebrahim
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Nour E M Mohammad
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | | | - Ahmed S M Elhewaty
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Sherif M H Sanad
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Ahmed E M Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
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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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New thieno[2,3-b]pyridine-fused pyrimidin-4(3H)-ones as potential thymidylate synthase inhibitors: Synthesis, SAR, in vitro and in silico study. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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Harit T, Cherfi M, Elhouda Daoudi N, Isaad J, Bnouham M, Malek F. Hybrid Pyrazole‐Tetrazole Derivatives with High α‐Amylase Inhibition Activity: Synthesis, Biological Evaluation and Docking Study. ChemistrySelect 2022. [DOI: 10.1002/slct.202203757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tarik Harit
- Laboratory of Applied Chemistry and Environment -ECOMP Faculty of Sciences Mohamed 1st University Bd Mohamed VI, BP: 717 Oujda 60000 Morocco
| | - Mounir Cherfi
- Laboratory of Applied Chemistry and Environment -ECOMP Faculty of Sciences Mohamed 1st University Bd Mohamed VI, BP: 717 Oujda 60000 Morocco
| | - Nour Elhouda Daoudi
- Laboratory of Bioresources Biotechnology Ethnopharmacology and Health Faculty of Sciences Mohamed 1st University 60000 Oujda Morocco
| | - Jalal Isaad
- ERCI2 A FSTH Abdelmalek Essaadi University Tetouan Morocco 93000
| | - Mohamed Bnouham
- Laboratory of Bioresources Biotechnology Ethnopharmacology and Health Faculty of Sciences Mohamed 1st University 60000 Oujda Morocco
| | - Fouad Malek
- Laboratory of Applied Chemistry and Environment -ECOMP Faculty of Sciences Mohamed 1st University Bd Mohamed VI, BP: 717 Oujda 60000 Morocco
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Mohamed Ahmed MS, Mekky AE, Sanad SM. Regioselective [3 + 2] cycloaddition synthesis and theoretical calculations of new chromene-pyrazole hybrids: A DFT-based Parr Function, Fukui Function, local reactivity indexes, and MEP analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133583] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Mekky AE, Sanad SM, Abdelfattah AM. Tandem synthesis, antibacterial evaluation and SwissADME prediction study of new bis(1,3,4-oxadiazoles) linked to arene units. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.09.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Sanad SMH, Mekky AEM. [3 + 2] Cycloaddition synthesis of new (nicotinonitrile-chromene) hybrids linked to pyrazole units as potential acetylcholinesterase inhibitors. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2109974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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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Ahmed AAM, Mekky AEM, Sanad SMH. New bis(pyrazolo[3,4-b]pyridines) and bis(thieno[2,3-b]pyridines) as potential acetylcholinesterase inhibitors: synthesis, in vitro and SwissADME prediction study. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02614-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Abdelfattah AM, Mekky AEM, Sanad SMH. Synthesis, antibacterial activity and in silico study of new bis(1,3,4-oxadiazoles). SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2095211] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Ahmed AAM, Mekky AEM, Sanad SMH. New piperazine-based bis(thieno[2,3- b]pyridine) and bis(pyrazolo[3,4- b]pyridine) hybrids linked to benzofuran units: Synthesis and in vitro screening of potential acetylcholinesterase inhibitors. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2056853] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ahmed A. M. Ahmed
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
- Common First Year Deanship, Jouf University, Sakaka, KSA
| | - Ahmed E. M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Abdelhamid IA, Shaaban MR, Elwahy AH. Bis-aldehydes: Versatile precursors for bis-heterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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