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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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Pal S, Das D, Bhunia S. p-Toluenesulfonic acid-promoted organic transformations for the generation of molecular complexity. Org Biomol Chem 2024; 22:1527-1579. [PMID: 38275082 DOI: 10.1039/d3ob01766d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Since the beginning of this century, p-toluenesulfonic acid (p-TSA) catalysed organic transformations have been an active area of research for developing efficient synthetic methodologies. Often, catalysis using p-TSA is associated with many advantages, such as operational simplicity, high selectivity, excellent yields, and ease of product isolation, which make organic synthesis convenient and versatile. Notably, p-TSA is a non-toxic, commercially available, inexpensive solid organic compound that is soluble in water, alcohols, and other polar organic solvents. p-TSA is a strong acid compared to many protic or mineral acids and its high acidity helps activate different organic functional groups. p-TSA-promoted conversions are fast, have a high atom and pot economy, and feature a multiple bond-forming index. Therefore, the utilization of p-TSA enables the synthesis of many important structural scaffolds without any hazardous metals, making it desirable in numerous applications of sustainable and green chemistry. Recently, this emerging area of research has become one of the pillars of synthetic organic chemistry to synthesise biologically relevant, complex carbocycles and heterocycles. This study provides a comprehensive summary of methods, applications, and mechanistic insights into p-TSA-catalysed organic transformations, covering the literature reports that have appeared since 2012.
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Affiliation(s)
- Sanchari Pal
- Department of Chemistry, Triveni Devi Bhalotia College, Raniganj, India.
| | - Debjit Das
- Department of Chemistry, Triveni Devi Bhalotia College, Raniganj, India.
| | - Sabyasachi Bhunia
- Department of Chemistry, Central University of Jharkhand, Ranchi, Jharkhand, India.
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Sabri Z, Shadjou N, Mahmoudian M. Accelerated synthesis of 1,8-dioxo-octahydroxanthene and 1,8-dioxo-decahydroacridine derivatives using dendritic mesoporous nanosilica functionalized by hexamethylenetetramine: a novel nanocatalyst. RSC Adv 2024; 14:2633-2651. [PMID: 38226145 PMCID: PMC10789180 DOI: 10.1039/d3ra07629f] [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: 11/08/2023] [Accepted: 01/08/2024] [Indexed: 01/17/2024] Open
Abstract
Xanthene and acridine derivatives are interesting organic compounds that are used in different research fields like biomedicine and pharmaceutical science. However, applied catalysts for their synthesis have some limitations such as long reaction times, the need for harsh conditions and low yield. So, discovery of novel catalysts for the synthesis of xanthene and acridine derivatives is highly demanded. To overcome the limitation of previous methods on the efficient synthesis of 1,8-dioxo-octahydroxanthene and 1,8-dioxo-decahydroacridine derivatives, a green heterogeneous organic nano-catalyst (Cu@KCC-1-nPr-HMTA) was synthesized by covalent attachment of hexamethylenetetramine to the cavities and channels of dendritic mesoporous nanosilica (KCC-1). The prepared nano-catalyst was identified using various spectroscopic and microscopic methods including scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), X-ray energy diffraction (EDX), EDX mapping and nitrogen adsorption-desorption analysis (BET-BJH). The prepared green nano-catalyst showed a spherical and dendritic structure with a surface area of 65.699 m2 g-1, average pore size of 40.78 nm and pore volume of 0.66 cm3 g-1. Also, Cu@KCC-1-nPr-HMTA has many chemo-active sites for the condensation reaction and was used as an efficient nano-catalyst towards one-step synthesis of 1,8-dioxo-decahydroacridine and 1,8-dioxo-octahydroxanthene derivatives from the reaction of aromatic aldehydes, dimedone, and ammonium acetate under solvent-free conditions. Short reaction times of 1 to 5 minutes for 1,8-dioxo-decahydroacridine and 30 to 55 minutes for 1,8-dioxo-octahydroxanthene derivatives, high yields and mild reaction conditions are advantages of the proposed synthetic method. It is hoped that the engineered nano-catalyst will be used for the synthesis of other organic compounds in the future.
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Affiliation(s)
- Zahra Sabri
- Department of Nanotechnology, Faculty of Chemistry, Urmia University Urmia Iran +98 44 32752741
- Institute of Nanotechnology, Urmia University Urmia Iran
| | - Nasrin Shadjou
- Department of Nanotechnology, Faculty of Chemistry, Urmia University Urmia Iran +98 44 32752741
- Institute of Nanotechnology, Urmia University Urmia Iran
| | - Mehdi Mahmoudian
- Department of Nanotechnology, Faculty of Chemistry, Urmia University Urmia Iran +98 44 32752741
- Institute of Nanotechnology, Urmia University Urmia Iran
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SO42−/SnO2-Fly Ash as Bifunctional Catalyst for Microwave-Assisted Single-Step Condensation of 2-Naphthol and Aromatic Aldehydes. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-07211-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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DAVOODI ELHAM, TAHANPESAR ELHAM, MASSAH AHMADREZA. Synthesis of 1,8‐dioxo-octahydroxanthenes utilizing nanodiatomite@melamine-SO3H as a novel heterogeneous catalyst under solvent-free conditions. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02065-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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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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Diab HM, Salem ME, Abdelhamid IA, Elwahy AHM. Hantzsch-like synthesis of bis(sulfanediyl)bis(tetrahydropyrimido[4,5-b]quinoline-4,6-diones) linked to arene or heteroarene cores utilizing bis(sulfanediyl)bis(6-aminopyrimidin-4-ones) as precursors. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02825-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abdelmoniem AM, Hammad HF, Darweesh AF, Abdelaziz MA, Abdelhamid IA, Elwahy AHM. Hantzsch one-pot multicomponent synthesis of a novel series of bis(9,10-diarylhexahydroacridine-1,8-diones). SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1956541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Hadeel F. Hammad
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
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Hawass MAE, Sanad SMH, Elwahy AHM, Abdelhamid IA. Hantzsch synthesis of bis(pyrido[2,3-d:6,5-d']dipyrimidines), bis(pyrimido[4,5-b]quinolines), and bis(benzo[4,5]imidazo[2,1-b]quinazolines) linked to pyrazole units as novel hybrid molecules. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1913604] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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