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El-Sayed MKF, Elshahawi MM, Abu El-Azm FSM, Hosni EM, Kamal M, Ali YM. Synthesis, molecular modelling and evaluation of larvicidal efficacy of annulated Benzo[h]chromenes against Culex pipiens L. Larvae. Sci Rep 2024; 14:18393. [PMID: 39117743 PMCID: PMC11310521 DOI: 10.1038/s41598-024-68035-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 07/18/2024] [Indexed: 08/10/2024] Open
Abstract
A new series of substituted benzo[h]chromene, benzochromenopyrimidine, and benzochromenotriazolopyrimidine derivatives were synthesized via chemical transformations of iminonitrile, ethoxymethylene amino, and cyanomethylene functionalities. The chemical structures of the synthesized compounds were assured by spectroscopic data and elemental analysis. The larvicidal efficacy of these compounds against Culex pipiens L. larvae was investigated, revealing potent insecticidal activity, particularly for compounds 6, 10, and 16, exceeding that of the standard insecticide chlorpyrifos. The mode of action of these compounds was explored through molecular docking studies, indicating their potential as acetylcholine esterase (AChE) inhibitors and nicotinic acetylcholine receptors (nAChR) blockers. The structure-activity relationship analysis highlighted the influence of substituents and fused heterocyclic rings on larvicidal potency. These findings suggest that the synthesized compounds hold promise as potential candidates for developing novel and effective mosquito control agents.
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Affiliation(s)
- Mahmoud K F El-Sayed
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | - Manal M Elshahawi
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | - Fatma S M Abu El-Azm
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | - Eslam M Hosni
- Entomology Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | - Mahmoud Kamal
- Entomology Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt
| | - Yasmeen M Ali
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, 11566, Egypt.
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Manna AS, Nandi R, Ghosh T, Pal S, Rahaman R, Maiti DK. Organic Base-Promoted C-N- and C-O-Coupled Domino Cyclization Strategy: Syntheses of Oxazine-6-ones and 4-Pyrimidinols. J Org Chem 2024; 89:5650-5664. [PMID: 38577786 DOI: 10.1021/acs.joc.4c00132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Oxazine-6-one and 4-pyrimidinol are two important frameworks in pharmaceutical production. Herein, we disclosed a simple, efficient, inexpensive organic base-promoted and additive-stimulated protocol for the syntheses of variably functionalized oxazine-6-ones and 4-pyrimidinols employing acetonitrile solvent under conventional heating conditions using an oil bath through C-N and C-O coupled domino steps. This simple practicable productive protocol utilizes easily producible cheap precursors, namely, benzimidates or benzamidines, with differently substituted dicyano-olefins, and it comprises step economy, robustness, and moisture insensitive conditions affording high yield that avoids the use of transition-metal catalysts, multistep with multicomponent strategy, and harsh reaction conditions involving hazardous chemicals. This method is scalable into gram-scale production with good yield.
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Affiliation(s)
- Anindya S Manna
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Rajesh Nandi
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Tanmoy Ghosh
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Subhasis Pal
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Rajjakfur Rahaman
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
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Abu El-Azm FSM, El-Shahawi MM, Elgubbi AS, Madkour HMF. Design, synthesis, anti-proliferative activity, and molecular docking studies of novel benzo[f]chromene, chromeno [2,3-d]pyrimidines and chromenotriazolo[1,5-c]pyrimidines. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2019.1710850] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Manal M. El-Shahawi
- Faculty of Science, Chemistry Department, Ain Shams University, Cairo, Egypt
| | - Amna S. Elgubbi
- Faculty of Science, Chemistry Department, Misurata University, Misurata, Libya
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Mozafari S, Shiri A, Bakavoli M, Akbarzadeh M, Saadat K, Etemadi Y. Synthesis and Density Functional Theory Study of [1,2,3]Triazolo[4,5-d][1,2,4] Triazolo[4,3-a]Pyrimidine Derivatives: A Novel Heterocyclic System. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14743011878429] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Several 3H-[1,2,3]triazolo[4,5-d][1,2,4]triazolo[4,3-a]pyrimidine derivatives of a novel ring system have been synthesised. The initial substitution of the 4-Cl function of 2,4-dichloro-6-methylpyrimidin-5-amine with benzylamine followed by treatment with sodium nitrite generated 3-benzyl-5-chloro-7-methyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine. Nucleophilic substitution of the 5-Cl moiety of the latter compound with hydrazine hydrate and subsequent treatment with carbon disulfide in boiling pyridine gave, quantitatively, the corresponding [1,2,3]triazolo[4,5-d][1,2,4]triazolo[4,3-a]pyrimidine derivatives. Density functional theory (DFT) studies were also performed to reveal regioselectivity of the ring closure via Gauge-Independent Atomic Orbital (GIAO) 1H NMR calculations. The WP04 method was used as the DFT code to yield accurate chemical shift values. Theoretical results correlated well with the expected regioisomer and aided assignment of the final structure.
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Affiliation(s)
- Sarinasadat Mozafari
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran
| | - Ali Shiri
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran
| | - Mehdi Bakavoli
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran
| | - Marzieh Akbarzadeh
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran
| | - Kayvan Saadat
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran
| | - Yasaman Etemadi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran
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