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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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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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Ahmed AAM, Mekky AEM, Sanad SMH. Effective synthesis of new benzo-fused macrocyclic and heteromacrocyclic bis(Schiff bases). JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-021-02409-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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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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Potential bacterial biofilm, MRSA, and DHFR inhibitors based on new morpholine-linked chromene-thiazole hybrids: One-pot synthesis and in silico study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131476] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Sanad SMH, Mekky AEM. 3-Aminopyrazolo[3,4-b]pyridine: Effective Precursor for Barium Hydroxide-Mediated Three Components Synthesis of New Mono- and Bis(pyrimidines) with Potential Cytotoxic Activity. Chem Biodivers 2021; 19:e202100500. [PMID: 34784450 DOI: 10.1002/cbdv.202100500] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 11/16/2021] [Indexed: 01/02/2023]
Abstract
In this study, an efficient one-pot procedure for preparing a new series of pyrazolo[3,4-b]pyridine-fused pyrimidines was described. The target hybrids were developed through a three-component reaction of 3-amino-1H-pyrazolo[3,4-b]pyridine, benzaldehydes, and acetophenones (molar ratio 1 : 1 : 1). The best conditions for the previous reaction were 2.5 equivalents of barium hydroxide in DMF at 150 °C for 6 h. New bis(pyrimidines) were synthesized in high yields using a similar one-pot reaction protocol with some modifications. Thus, two equivalents of each of the appropriate acetophenones and 3-aminopyrazolopyridine were reacted with one equivalent of the appropriate bis(aldehydes). The reaction was carried out at 150 °C for 8 h using 4.5 equivalents of barium hydroxide in DMF. Repeating the previous reaction with the appropriate bis(acetyl) derivatives and benzaldehydes resulted in good yields of the target bis(pyrimidines). The in vitro cytotoxic activity of new pyrimidines against the MCF-7, HEPG2, and Caco2 cell lines was evaluated using the reference doxorubicin (IC50 values of 4.34-6.97 μM). Hybrid 6h had the best activity against Caco2 and MCF-7 cell lines, IC50 values of 12.62 and 14.50 μM, respectively. The IC50 values for hybrids 6c, 6e, and 6f against MCF-7 and Caco2 cell lines were 23.99-41.69 and 33.14-43.33 μM, respectively. Furthermore, hybrid 6e displayed IC50 value of 20.06 μM HEPG2 cell lines, while the hybrids 6c, 6f and 6h exhibited IC50 values ranging between 26.29-50.51 μM. Furthermore, hybrid 6e had an IC50 value of 20.06 μM for the HEPG2 cell lines, whereas hybrids 6c, 6f, and 6h had IC50 values ranging from 26.29 to 50.51 μM.
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Affiliation(s)
- 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 SM, Mekky AE. New pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidin-4(3H)-one hybrids linked to arene units: synthesis of potential MRSA, VRE, and COX-2 inhibitors. CAN J CHEM 2021. [DOI: 10.1139/cjc-2021-0121] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the current study, we reported the tandem synthesis of two series of arene-linked pyrimidinone hybrids with related fused thieno[2,3-b]pyridine moiety. The target hybrids were prepared, in moderate to excellent yields, by the reaction of a ternary mixture of the appropriate of 3-aminothieno[2,3-b]pyridine-2-carboxylate, DMF-DMA, and a series of aryl amines in dioxane at 110 °C for 8 h. The antibacterial activity of the new hybrids was estimated against six susceptible ATCC strains. Hybrids 5g and 7g, linked to a sulfonamide unit, showed the best efficacy against S. aureus and E. faecalis strains with minimum inhibitory concentration (MIC) values of 1.7–1.8 μM, which exceed ciprofloxacin. Furthermore, some of new hybrids were examined as potential inhibitors of four different MRSA and VRE strains. Hybrids 5g and 7g demonstrated more potent efficacy than linezolid against MRSA strains with MIC values of 3.6/3.4 and 1.8/1.7 μM against ATCC:33591 and ATCC:43300 strains, respectively. The prior hybrids displayed a comparable efficacy with linezolid against VRE strains with MIC values of 7.3/6.9 and 3.6/3.4 μM against ATCC:51299 and ATCC:51575 strains, respectively. Additionally, some of the new hybrids were examined as potential COX-2 inhibitors using the reference celecoxib (IC50 of 0.117 µM). Hybrid 7g revealed more potent inhibitory efficacy than celecoxib with IC50 of 0.112 µM, whereas hybrid 5g showed almost inhibitory activity equivalent to celecoxib with IC50 of 0.121 µM. Molecular docking was performed to predict the possible binding interactions between hybrids 5g and 7g with the target COX-2 enzyme.
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Affiliation(s)
- Sherif M.H. Sanad
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Ahmed E.M. Mekky
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
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Sanad SM, Mekky AE. Synthesis and antibacterial evaluation of new pyrido[3',2':4,5]thieno[3,2-d ]pyrimidin-4(3H)-one hybrids linked to different heteroarene units. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.11.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Mekky AEM, Sanad SMH, El-Idreesy TT. New thiazole and thiazole-chromene hybrids possessing morpholine units: Piperazine-mediated one-pot synthesis of potential acetylcholinesterase inhibitors. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1970774] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ahmed E. M. Mekky
- Faculty of Science , Chemistry Department, Cairo University, Giza, Egypt
| | - Sherif M. H. Sanad
- Faculty of Science , Chemistry Department, Cairo University, Giza, Egypt
| | - Tamer T. El-Idreesy
- Faculty of Science , Chemistry Department, Cairo University, Giza, Egypt
- Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, New Cairo, Egypt
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Guo T, Kong L, Xu J, Geng Y, Zhang R, Pan Y, Xiao H. Intermolecular interactions between β-cyclodextrin and water. RSC Adv 2021; 11:24807-24815. [PMID: 35481034 PMCID: PMC9037024 DOI: 10.1039/d1ra03960a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 06/25/2021] [Indexed: 11/30/2022] Open
Abstract
This study focused on demonstrating the intermolecular interactions between β-cyclodextrin and water, with the aim to better understand the transfer of small molecules to β-cyclodextrin. The intermolecular interaction strength between β-cyclodextrin and water was analyzed using different methods such as the dynamic adsorption of water, the TG-DSC of β-cyclodextrin and molecular modeling employing MM2 force field calculations. The experiments for the adsorption of water on β-cyclodextrin was aimed to systematically investigate the adsorption characteristics, such as adsorption capacity, adsorption rate, adsorption heat and activation energy, influenced by the adsorption temperature and vapor pressure of water. The results indicated that the water adsorption on β-cyclodextrin is an exothermic process. The hysteresis loop type in the adsorption isotherms at multiple temperatures indicated that water adsorption is not purely a traditional physical adsorption due to the existence of structure effects such as the cavity effect and hydrogen bonding. The activation energy during water adsorption was 7.4 kJ mol-1. However, the activation energy during water desorption was in the range of 35-45 kJ mol-1, which decreased with an increase in the amount of water adsorbed. This indicated that water adsorption is much easier than water desorption from β-cyclodextrin and that water desorption is more difficult with a small amount of adsorbed water compared with a large amount of adsorbed water. Subsequently, the obtained average intermolecular interaction strength between β-cyclodextrin and water under the experimental conditions was 67.5 kJ mol-1 (water), which was verified by DSC.
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Affiliation(s)
- Tianxiang Guo
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Lingfeng Kong
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Junpeng Xu
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Yuhan Geng
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Runan Zhang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Yuanfeng Pan
- School of Chemistry and Chemical Engineering, Guangxi University Nanning 530004 PR China
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick Fredericton E3B 5A3 Canada
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