1
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Emam SM, Rayes SME, Ali IAI, Soliman HA, Nafie MS. Synthesis of phthalazine-based derivatives as selective anti-breast cancer agents through EGFR-mediated apoptosis: in vitro and in silico studies. BMC Chem 2023; 17:90. [PMID: 37501139 PMCID: PMC10375784 DOI: 10.1186/s13065-023-00995-2] [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: 03/21/2023] [Accepted: 06/30/2023] [Indexed: 07/29/2023] Open
Abstract
The parent 2-(4-benzyl-1-oxophthalazin-2(1H)-yl)-acetohydrazide (4) has twenty-nine compounds. The starting material for their corresponding mono, dipeptides and reactions with active methylene compounds were produced by chemoselective N-alkylation of 4-Benzyl-2H-phthalazin-1-one (2) with ethyl chloroacetate to afford (4-benzyl-1-oxo-1H-phthalazin-2-yl) methyl acetate (3). The ester 3 was hydrazinolyzed to give hydrazide 4, then azide 5 coupled with amino acid ester hydrochloride and/or amines to produce several monopeptides, then the methyl (2-(4-benzyl-1-oxophthalazin-2(1H)-yl) acetyl) glycinate (7a) was hydrazinolyzed to produce corresponding hydrazide 2-(4-benzyl-1-oxophthalazin-2(1H)-yl)-N-(2-hydrazineyl-2-oxo ethyl) acetamide (8a). The hydrazide 8a under azide coupling method was coupled with amino acid ester hydrochloride and/or amines to produce several dipeptides, and the hydrazide 8a was also condensed and/or cyclized with several carbonyl compounds. The cytotoxicity of the synthesized compounds was tested using MTT assay, as well as apoptosis-induction through EGFR inhibition. Compounds 11d, 12c and 12d exhibited potent cytotoxic activities with IC50 values of 0.92, 1.89 and 0.57 μM against MDA-MB-231 cells compared to Erlotinib (IC50 = 1.02 μM). Interestingly compound 12d exhibited promising potent EGFR inhibition with an IC50 value 21.4 nM compared to Erlotinib (IC50 = 80 nM). For apoptosis, compound 12d induced apoptosis in MDA-MB-231 cells by 64.4-fold (42.5% compared to 0.66 for the control); hence, this compound may serve as a potential target-oriented anti-breast cancer agent. These results agreed with the molecular docking studies that highlighted the binding disposition of compound 12d towards EGFR protein. Hence, compound 12d may serve as a potential and selective anti-breast cancer agent.
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Affiliation(s)
- Sara M Emam
- Department of Chemistry, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Samir M El Rayes
- Department of Chemistry, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt.
| | - Ibrahim A I Ali
- Department of Chemistry, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Hamdy A Soliman
- Department of Chemistry, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Mohamed S Nafie
- Department of Chemistry, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt.
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2
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Meanwell NA. The pyridazine heterocycle in molecular recognition and drug discovery. Med Chem Res 2023; 32:1-69. [PMID: 37362319 PMCID: PMC10015555 DOI: 10.1007/s00044-023-03035-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 02/06/2023] [Indexed: 03/17/2023]
Abstract
The pyridazine ring is endowed with unique physicochemical properties, characterized by weak basicity, a high dipole moment that subtends π-π stacking interactions and robust, dual hydrogen-bonding capacity that can be of importance in drug-target interactions. These properties contribute to unique applications in molecular recognition while the inherent polarity, low cytochrome P450 inhibitory effects and potential to reduce interaction of a molecule with the cardiac hERG potassium channel add additional value in drug discovery and development. The recent approvals of the gonadotropin-releasing hormone receptor antagonist relugolix (24) and the allosteric tyrosine kinase 2 inhibitor deucravacitinib (25) represent the first examples of FDA-approved drugs that incorporate a pyridazine ring. In this review, the properties of the pyridazine ring are summarized in comparison to the other azines and its potential in drug discovery is illustrated through vignettes that explore applications that take advantage of the inherent physicochemical properties as an approach to solving challenges associated with candidate optimization. Graphical Abstract
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3
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Abu‐Hashem AA, Fathy U, Gouda MA. Synthesis of 1,2,
4‐triazolopyridazines
, isoxazolofuropyridazines, and tetrazolopyridazines as antimicrobial agents. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ameen A. Abu‐Hashem
- Photochemistry Department (Heterocyclic Unit)National Research Centre Giza Egypt
- Chemistry Department, Faculty of ScienceJazan University Jazan Saudi Arabia
| | - Usama Fathy
- Applied Organic Chemistry DepartmentNational Research Centre Giza Egypt
| | - Moustafa A. Gouda
- Department of Chemistry, Faculty of Science and ArtsTaibah University Ulla Saudi Arabia
- Department of Chemistry, Faculty of ScienceMansoura University Mansoura Egypt
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4
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Palladium and Copper Catalyzed Sonogashira cross Coupling an Excellent Methodology for C-C Bond Formation over 17 Years: A Review. Catalysts 2020. [DOI: 10.3390/catal10040443] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Sonogashira coupling involves coupling of vinyl/aryl halides with terminal acetylenes catalyzed by transition metals, especially palladium and copper. This is a well known reaction in organic synthesis and plays a role in sp2-sp C-C bond formations. This cross coupling was used in synthesis of natural products, biologically active molecules, heterocycles, dendrimers, conjugated polymers and organic complexes. This review paper focuses on developments in the palladium and copper catalyzed Sonogashira cross coupling achieved in recent years concerning substrates, different catalyst systems and reaction conditions.
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5
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Synthesis and vasodilator activity of some pyridazin-3(2H)-one based compounds. Future Med Chem 2020; 12:37-50. [DOI: 10.4155/fmc-2019-0160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Aim: Hypertension is a major health problem worldwide resulting in high death rates due to its consequences and complications. Therefore, searching for new vasorelaxants is a must to find new vasodilators efficient for the treatment of different cardiovascular diseases. Methodology: Different 6-phenyl-3-pyridazinone based derivatives were synthesized and screened for their vasorelaxant activity according to the reported method using hydralazine as a standard. Results: The tested compounds revealed potent to mild activity with EC50 values 0.339–114.300 μM compared with hydralazine EC50 = 18.210 μM. Conclusion: The most active compounds were the acid 5, its ester analog 4 and 4-methoxyphenylhydrazide derivative 10c (EC50 = 0.339, 1.225 and 1.204 μM, respectively). Therefore, 6-phenylpyridazin-3(2 H)-one can be a hit for structural optimization to obtain promising vasorelaxants.
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6
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Amer AM, Zayed MF, Deeb A, Ali A. Pyridazine derivatives and related compounds. Part 141. Photolysis of 3-diazo-4,5-diphenylpyrazolo[3,4-c]pyridazine. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823405774663011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The photochemistry of 3-diazopyrazolopyridazine has been investigated. The irradiation of 3-diazo-4,5-diphenylpyrazolo[3,4-c]pyridazine in various solvents forms a carbene intermediate, which transforms into 3-substituted derivatives. For photolysis in the presence of acetylacetone or ethyl acetoacetate the coupling reactions which occur at the methylene group are faster than carbene formation, and can lead to direct cyclisation into condensed 1,2,4-triazines. Photolysis in the presence of diethyl malonate forms an acyclic hydrazone.
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Affiliation(s)
- Atef Mohamed Amer
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
| | | | - Ali Deeb
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Ahmed Ali
- Laboratory of Photochemistry, National Research Center, Dokki, Cairo, Egypt
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7
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Zou X, Zhang Z, Jin G. Synthesis and Biological Activity of 1,3,4-Oxadiazole-Substituted Pyridazinones. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823402103171780] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Novel 3-(1,3,4-oxadiazol-2-yl)-1-aryl-6-methylpyridazin-4-ones have been synthesised by two methods. A preliminary bio-activity test showed that these compounds exhibit high antifungal activity.
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Affiliation(s)
- Xiajuan Zou
- Institute of Elemento-Organic Chemistry, National Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300 071, P. R. China
| | - Zuxin Zhang
- Institute of Elemento-Organic Chemistry, National Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300 071, P. R. China
| | - Guiyu Jin
- Institute of Elemento-Organic Chemistry, National Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300 071, P. R. China
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8
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Komendantova AS, Fakhrutdinov AN, Menchikov LG, Sukhorukov AY, Zavarzin IV, Volkova YA. Cyclization of β-Chlorovinyl Thiohydrazones into Pyridazines: A Mechanistic Study. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Anna S. Komendantova
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Artem N. Fakhrutdinov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Leonid G. Menchikov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Alexey Yu. Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Igor V. Zavarzin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
| | - Yulia A. Volkova
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky prosp. 119991 Moscow Russia
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9
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Gudala S, Ambati SR, Sharma A, Patel JL, Vedula RR, Penta S. Facile synthesis of multi-functional 1,3,4-thiadiazine derivatives bearing phthalazine, pyridazine, and pyrido-pyridazine moieties. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Satish Gudala
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
| | - Srinivasa Rao Ambati
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
- Department of Research and Development; MSN R&D Center; Pashamylarram Telangana India
| | - Archi Sharma
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
| | - Jeevan Lal Patel
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
| | - Rajeswar Rao Vedula
- Department of Chemistry; National Institute of Technology; Warangal Telangana India
| | - Santhosh Penta
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
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10
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Asif M. Diverse Biologically Active Pyridazine Analogs: A Scaffold for the Highly Functionalized Heterocyclic Compounds. ACTA ACUST UNITED AC 2018. [DOI: 10.1134/s2079978018030019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Synthesis and antimicrobial activity of some novel substituted pyridazin-3(2H)-ones containing 1,3,4-thiadiazole moiety. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1492-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Prabavathi N, Senthil Nayaki N, Venkatram Reddy B. Molecular structure, vibrational spectra, natural bond orbital and thermodynamic analysis of 3,6-dichloro-4-methylpyridazine and 3,6-dichloropyridazine-4-carboxylic acid by dft approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:1134-1148. [PMID: 25459510 DOI: 10.1016/j.saa.2014.09.137] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 09/26/2014] [Accepted: 09/30/2014] [Indexed: 06/04/2023]
Abstract
Vibrational spectral analysis of the molecules 3,6-dichloro-4-methylpyridazine (DMP) and 3,6-dichloropyridazine-4-carboxylic acid (DPC) was carried out using FT-IR and FT-Raman spectroscopic techniques. The molecular structure and vibrational spectra of DMP and DPC were obtained by the density functional theory (DFT) method, using B3LYP functional, with 6-311++G(d,p) basis set. A detailed interpretation of the Infrared and Raman spectra of the two molecules were reported based on potential energy distribution (PED). The theoretically predicted FTIR and FT-Raman spectra of the titled molecules have been simulated and were compared with the experimental spectra. Determination of electric dipole moment (μ) and hyperpolarizability β0 helps to study the non-linear optical (NLO) behavior of DMP and DPC. Stability of the molecules arising from hyperconjugative interactions, charge delocalization have been analyzed using natural bond orbital (NBO) analysis. (13)C and (1)H NMR spectra were recorded and (13)C and (1)H NMR chemical shifts of the molecules were calculated using the gauge independent atomic orbital (GIAO) method. UV-visible spectrum of the compounds was also recorded in the region 200-1100 nm and electronic properties, HOMO (Highest Occupied Molecular Orbitals) and LUMO (Lowest Unoccupied Molecular Orbitals) energies were measured by time-dependent TD-DFT approach. Charge density distribution and site of chemical reactivity of the molecule have been studied by mapping electron density isosurface with molecular electrostatic potential (MESP).
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Affiliation(s)
- N Prabavathi
- Department of Physics, Sri Sarada College for Women (Autonomous), Salem 636 016, India.
| | - N Senthil Nayaki
- Department of Physics, Sri Sarada College for Women (Autonomous), Salem 636 016, India
| | - B Venkatram Reddy
- Department of Physics, Kakatiya University, Warangal, Telangana 506009, India
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13
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Blaise E, Kümmerle AE, Hammoud H, de Araújo-Júnior JX, Bihel F, Bourguignon JJ, Schmitt M. Access to 4-alkylaminopyridazine derivatives via nitrogen-assisted regioselective Pd-catalyzed reactions. J Org Chem 2014; 79:10311-22. [PMID: 25310174 DOI: 10.1021/jo501930s] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
3-Substituted, 6-substituted, and unsymmetrical 3,6-disubstituted 4-alkylaminopyridazines were prepared from a sequence of three chemo- and regioselective reactions combining amination and palladium-catalyzed cross-coupling reactions, such as reductive dehalogenation and Suzuki-Miyaura reactions. Extension of the methodology to Sonogashira reaction yielded a novel class of 3-substituted pyrrolopyridazines.
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Affiliation(s)
- Emilie Blaise
- Laboratoire d'Innovation Thérapeutique, UMR 7200, Faculté de Pharmacie, Université de Strasbourg , 74 Route du Rhin, BP 60024, 67400 Illkirch, France
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14
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Zhang M, Hu FZ, Zhao T, Yang LQ, Yang HZ. Synthesis and Herbicidal Evaluation of 3-N-Substituted Amino-6-benzyloxypyridazine Derivatives. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Min Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang 212013 Jiangsu People's Republic of China
| | - Fang-Zhong Hu
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Ting Zhao
- School of Food and Biological Engineering; Jiangsu University; Zhenjiang 212013 Jiangsu People's Republic of China
| | - Liu-Qing Yang
- School of Chemistry and Chemical Engineering; Jiangsu University; Zhenjiang 212013 Jiangsu People's Republic of China
| | - Hua-Zheng Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
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15
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Yaremenko AG, Volochnyuk DM, Shelyakin VV, Grygorenko OO. Tetrahydropyrido[d]pyridazinones—promising scaffolds for drug discovery. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Hassan AA, Mostafa SM, Bräse S, Nieger M. A simple and efficient synthesis of 3-amino-5-benzyl-6-phenylpyridazine-4-carbonitrile. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Eftekhari-Sis B, Zirak M, Akbari A. Arylglyoxals in Synthesis of Heterocyclic Compounds. Chem Rev 2013; 113:2958-3043. [DOI: 10.1021/cr300176g] [Citation(s) in RCA: 228] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Bagher Eftekhari-Sis
- Department of Chemistry, Faculty
of Science, University of Maragheh, Golshahr,
P.O. Box. 55181-83111, Maragheh, Iran
| | - Maryam Zirak
- Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran,
Iran
| | - Ali Akbari
- Department of Chemistry, Faculty
of Science, University of Maragheh, Golshahr,
P.O. Box. 55181-83111, Maragheh, Iran
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18
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Wang L. 6-Oxo-1,6-dihydro-pyridazine-3-carbaldehyde monohydrate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2483. [PMID: 22904925 PMCID: PMC3414938 DOI: 10.1107/s1600536812031674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Accepted: 07/11/2012] [Indexed: 11/29/2022]
Abstract
In the title hydrate, C5H4N2O2·H2O, the pyridazine ring is essentially planar, with an r.m.s. deviation of 0.0025 Å. In the crystal, O—H⋯O and N—H⋯O hydrogen bonds link the molecules into a one-dimensional chain.
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Affiliation(s)
- Lei Wang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, People's Republic of China
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19
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HAFIZ IBRAHIMSAADABDEL, RAMIZ MAHMOUDMOHAMEDMAHFOUZ, ELIAN MOHAMEDAHMED. Activated anilide in heterocyclic synthesis: Synthesis of new hydrazo, dihydropyridazine, tetrahydropyridine, dihydropyridine and pyranopyridine derivatives. J CHEM SCI 2012. [DOI: 10.1007/s12039-012-0259-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Synthesis and fungicidal activity of tubulin polymerisation promoters. Part 2: Pyridazines. Bioorg Med Chem 2012; 20:2803-10. [DOI: 10.1016/j.bmc.2012.03.035] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 03/12/2012] [Accepted: 03/15/2012] [Indexed: 11/19/2022]
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21
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Mahmoud MR, Abou-Elmagd WS, Derbala HA, Hekal MH. Synthesis and Spectral Characterisation of Some Phthalazinone Derivatives. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13274297624330] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
1,2,4-Triazol-3-yl, 1,3,4-oxadiazol-2-yl, 1,3-dioxoisoindolin-2-yl, 1 H-pyrazol-4-yl, phthalazin-1(2 H)one, 5 H-2,3-benzodi-azepine-1,4-dione and pyridazine-1,4-dione derivatives were prepared via the reaction of the readily obtainable starting material 1-oxo-1,2-dihydrophthalazin-4-carbohydrazide with one carbon donor like phenyl isothiocyanate, phenyl isocyanate, triethylorthoformate, formic acid and different electrophilic reagents such as anhydrides, chromen-1,3-dione, chloroacetyl chloride, acetic anhydride, arylidene malononitrile, ethoxymethylene malononitrile and ethyl acetoacetate.
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Affiliation(s)
- Mahmoud R. Mahmoud
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia 11566, Cairo, Egypt
| | - Wael S.I. Abou-Elmagd
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia 11566, Cairo, Egypt
| | - Hamed A. Derbala
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia 11566, Cairo, Egypt
| | - Mohamed H. Hekal
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia 11566, Cairo, Egypt
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22
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Barsy MA, El Rady EA, Ismael MA. Efficient synthesis of pyrimido[5,4-c]pyridazines and of thiino[2,3-d]pyrimidines based on an aza-wittig reaction/heterocyclization strategy. J Heterocycl Chem 2012. [DOI: 10.1002/jhet.646] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Abdelrazek FM, Sobhy NA, Metz P, Bazbouz AA. Synthetic studies with 3-Oxo-N-[4-(3-oxo- 3-phenylpropionylamino)-phenyl]-3-phenylpropionamide. J Heterocycl Chem 2011. [DOI: 10.1002/jhet.784] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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El-Wahab AHA, Mohamed HM, El-Agrody AM, El-Nassag MA, Bedair AH. Synthesis and Biological Screening of 4-Benzyl-2H-phthalazine Derivatives. Pharmaceuticals (Basel) 2011. [PMCID: PMC4058664 DOI: 10.3390/ph4081158] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Preparation of 4-benzyl-2-substituted phthalazin-1-one derivatives 2-8 is reported. Condensation of 4-benzyl-1-chlorophthalazine (9) with a series of different nucleophiles gave 4-benzylphthalazin-1-ylamino derivatives (10-13 and 16) and 4-amino-2-[N′-(4-benzylphthalazin-1-yl)-hydrazino]-6-arylpyrimidine-5-carbonitriles (14a,b). Interaction of 9 with ambident anions was also studied. 5-Benzyl-6,6a,12-triazobenzo[a]-anthracen-7-one (15) is obtained from 9 and anthranilic acid derivatives. Treatment of 16 with (EtO)3CH/Ac2O under reflux afforded the corresponding ethoxymethylene derivative 17, while aqueous ammonium hydroxide treatment afforded carboxamide derivative 18. The structures of the newly synthesized derivatives were confirmed by their elemental analysis, IR, 1H NMR, 13C NMR and mass spectral studies. Antimicrobial activities of some selected compounds were also studied and some of these were found to exhibit promising effects against Gram-positive and Gram-negative bacteria and fungi.
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Affiliation(s)
- Ashraf H.F. Abd El-Wahab
- Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt
- Chemistry Department, Faculty of Science, Jazan University, 2097, Jazan, Saudi Arabia
- Author to whom correspondence should be addressed; E-Mail:
| | - Hany M. Mohamed
- Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt
- Chemistry Department, Faculty of Medicine, Jazan University, 82621, Jazan, Saudi Arabia
| | - Ahmed M. El-Agrody
- Chemistry Department, Faculty of Science, King Khalid University, 9004, Abha, Saudi Arabia
| | - Mohammed A. El-Nassag
- Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt
| | - Ahmed H. Bedair
- Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt
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Deeb A, Kotb M, El-Abbasy M. Pyridazine Derivatives and Related Compounds. Part 11: 1Synthesis of Some Pyrimido[4′,5′:4,5]thieno[2,3-c]pyridazines. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500490475175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ali Deeb
- a Department of Chemistry, Faculty of Science, Zagazig University , Egypt
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27
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Mojahidi S, Rakib EM, Sekkak H, Abouricha S, Benchat N, Mousse HA, Zyad A. Synthesis and in-vitro cytotoxic evaluation of novel pyridazin-4-one derivatives. Arch Pharm (Weinheim) 2010; 343:310-3. [PMID: 20222064 DOI: 10.1002/ardp.200900290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A new series of N-aryl-4-oxo-1,4-dihydro-pyridazine-3-carboxylic acids has been synthesized by condensation of aryldiazonium with 4-hydroxy-6-methyl-2-pyrone. Some of these compounds exhibited in-vitro cytotoxic activity with moderate to excellent growth inhibition against the murine P815 mastocytoma cell line. Compound 5b showed an important cytotoxic activity against cell line P815 (IC(50 )= 0.40 microg/mL).
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Affiliation(s)
- Souad Mojahidi
- Laboratory of Organic and Analytical Chemistry, Faculty of Sciences and Technology, Béni-Mellal, Morocco
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28
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Deeb A, Mourad E, Elenany D. Pyridazine Derivatives and Related Compounds, Part 221: Synthesis, Reactions, and Insecticidal Activity of 3-Amino-5,6-diaryl-1H-pyrazolo[3,4-c]pyridazines. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500902758451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ali Deeb
- a Department of Chemistry, Faculty of Science , Zagazig University , Zagazig, Egypt
| | - Elsayed Mourad
- b Central Agricultural Pesticide Laboratory, Agricultural Research Center , El-Mansoura, Egypt
| | - Diaa Elenany
- b Central Agricultural Pesticide Laboratory, Agricultural Research Center , El-Mansoura, Egypt
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29
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Al-Kamali ASN. Synthesis and Reactions of Some New Thieno[2,3-C]pyridazine Derivatives. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500802353213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Hu FZ, Zhang GF, Liu B, Zou XM, Zhu YQ, Yang HZ. A new method for the synthesis and herbicidal activity of 3-phenoxy-6-(1H-(substituted)pyrazol-1-yl) pyridazines. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.120] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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31
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Xiao YH, Zhu YQ, Zou XM, Hu FZ, Yang HZ. Methyl 3-(4-{6-methyl-4-[3-(trifluoromethyl)phenyl]pyridazin-3-yloxy}phenyl)propanoate. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1044. [PMID: 21202564 PMCID: PMC2961364 DOI: 10.1107/s1600536808013342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Accepted: 05/06/2008] [Indexed: 11/10/2022]
Abstract
In the title compound, C22H19F3N2O3, the benzene rings of the trifluoromethylphenyl and benzoylphenyl groups form dihedral angles of 41.89 (10) and 67.44 (10)°, respectively, with the pyridazine ring. The methylpropanoate group is nearly coplanar with the attached benzene ring [dihedral angle = 3.9 (2)°]. The trifluoromethyl group is disordered over two positions; the site-occupancy factors are ca 0.64 and 0.36. In the crystal structure, inversion-related molecules are linked through C—H⋯O hydrogen bonds and C—H⋯π interactions.
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32
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Niu ZX, Zhu YQ, Hu FZ, Hu XH, Yang HZ. 6-Methyl-2-p-tolyl-4-[3-(trifluoro-meth-yl)phen-yl]pyridazin-3(2H)-one. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o675. [PMID: 21202068 PMCID: PMC2961053 DOI: 10.1107/s1600536808005928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2008] [Accepted: 03/03/2008] [Indexed: 11/10/2022]
Abstract
In the title mol-ecule, C(19)H(15)F(3)N(2)O, the benzene rings of the tolyl and trifluoro-methyl-phenyl groups form dihedral angles of 64.1 (2) and 38.5 (2)°, respectively, with the pyridazine ring. The CF(3) group is disordered over two orientations, with site-occupancy factors of ca 0.56 and 0.44.
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Affiliation(s)
- Zi-Xia Niu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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33
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Wang X, Zou XM, Zhu YQ, Hu XH, Yang HZ. 4-[3-(Trifluoro-meth-yl)phen-yl]-5,6,7,8-tetra-hydro-cinnolin-3(2H)-one. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o464. [PMID: 21201490 PMCID: PMC2960356 DOI: 10.1107/s1600536808000871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2007] [Accepted: 01/10/2008] [Indexed: 11/11/2022]
Abstract
The title compound, C(15)H(13)F(3)N(2)O, contains one benzene ring, one cyclo-hexane ring and a pyridazine ring. The dihedral angle formed by the pyridazine ring with the benzene ring is 61.5 (2)°. The crystal structure is stabilized by two inter-molecular hydrogen bonds (N-H⋯O and C-H⋯F). The cyclohexane ring adopts a screw-boat conformation. The CF(3) group is disordered over two positions; the site occupancy factors are ca 0.6 and 0.4.
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Affiliation(s)
- Xin Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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34
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Al-Sheikh MA. Synthesis with nitriles: synthesis of some new mercaptopyridazine, mercaptopyridazino[1,6-a]quinazoline and thiophene derivatives. Molecules 2008; 13:2750-7. [PMID: 18985952 PMCID: PMC6245072 DOI: 10.3390/molecules13112750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2008] [Revised: 10/20/2008] [Accepted: 10/28/2008] [Indexed: 11/28/2022] Open
Abstract
2-(1-(4-Bromophenyl)-2-thiocyanatoethylidene)malononitrile (3) undergoes azo coupling with diazotized aromatic amines to afford arylhydrazone derivatives, which are readily cyclized to afford the corresponding 3(2H)-pyridazinimine derivatives upon reflux in aqueous NaOH. Under similar condition an o-cyanoarylhydrazone derivative was cyclized into 6H-pyridazino[1,6-a]quinazolin-6-imine, which in turn was easily transformed into 6H-pyridazino[1,6-a]quinazolin-6-one on reflux in ethanolic/HCl. Compound 3 afforded substituted 5-acetylthiophene derivatives upon reflux in AcOH/HCl mixtures.
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Affiliation(s)
- Mariam A Al-Sheikh
- Chemistry, Girls College of Education, Jeddah, P. O. Box 138016, Jeddah 21323, Kingdom of Saudi Arabia.
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35
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Sengmany S, Léonel E, Polissaint F, Nédélec JY, Pipelier M, Thobie-Gautier C, Dubreuil D. Preparation of Functionalized Aryl- and Heteroarylpyridazines by Nickel-Catalyzed Electrochemical Cross-Coupling Reactions. J Org Chem 2007; 72:5631-6. [PMID: 17580900 DOI: 10.1021/jo070429+] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A general efficient electrochemical method for the preparation of aryl- and heteroarylpyridazines in a nickel-catalyzed cross-coupling reaction of 3-chloro-6-methoxypyridazine and 3-chloro-6-methylpyridazine with a range of functionalized aryl or heteroaryl halides is reported.
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Affiliation(s)
- Stéphane Sengmany
- Electrochimie et Synthèse Organique, Institut de Chimie et des Matériaux Paris-Est Unité Mixte de Recherche 7182-CNRS, Université Paris 12, 2 rue Henri-Dunant, F-94320 Thiais, France
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36
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El-Mariah F, Hosny M, Deeb A. Pyridazine Derivative and Related Compound, Part 18:1 Pyridazino [3′,4′:3,4]pyrazolo [5,1-c]-1,2,4-triazine-3-carboxylic Acid: Synthesis, Reactions, and Antimicrobial Activity. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500600754786] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Fatma El-Mariah
- a Department of Chemistry, Faculty of Girls , Ain Shams University , Cairo , Egypt
| | - Mona Hosny
- a Department of Chemistry, Faculty of Girls , Ain Shams University , Cairo , Egypt
| | - Ali Deeb
- b Department of Chemistry, Faculty of Science , Zagazig University , Zagazig , Egypt
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37
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Csámpai A, Zs. Nagy T, Lörincz K, Kotschy A. The Selective Functionalization of Pyridazino[4,5-d]pyridazines Using Polar Organometallic Reagents. HETEROCYCLES 2007. [DOI: 10.3987/com-06-10923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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Aly AA, Wasfy AAF. γ-Oxo Carboxylic Acids in Heterocyclic Synthesis IV. Synthesis of Some Pyridazines Containing Phthalyl and Tosyl Amino Acids Using Dcc as the Condensing Agent. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/10426500390221096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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39
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Strappaghetti G, Brodi C, Giannaccini G, Betti L. New 4-(4-methyl-phenyl)phthalazin-1(2H)-one derivatives and their effects on α1-receptors. Bioorg Med Chem Lett 2006; 16:2575-9. [PMID: 16545955 DOI: 10.1016/j.bmcl.2006.02.068] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2005] [Revised: 02/16/2006] [Accepted: 02/17/2006] [Indexed: 10/24/2022]
Abstract
Continuing our research aimed at obtaining new compounds with high affinity and selectivity toward alpha(1)-AR, a new series of arylpiperazine derivatives was designed, synthesized, and biologically tested. The new compounds 1-17 are characterized by a phenylphthalazin-1(2H)-one fragment connected through an alkyl chain to an arylpiperazine residue. The pharmacological profile of these compounds was evaluated for their affinity and selectivity toward alpha(1)-AR, alpha(2)-AR and toward 5HT(1A) serotoninergic receptor. A discussion on the structure-activity relationship (SAR) of these compounds is also reported.
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Affiliation(s)
- Giovannella Strappaghetti
- Dipartimento di Chimica e Tecnologia del Farmaco, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
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40
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del Olmo E, Barboza B, Ybarra MI, López-Pérez JL, Carrón R, Sevilla MA, Boselli C, San Feliciano A. Vasorelaxant activity of phthalazinones and related compounds. Bioorg Med Chem Lett 2006; 16:2786-90. [PMID: 16513345 DOI: 10.1016/j.bmcl.2006.02.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2005] [Revised: 02/01/2006] [Accepted: 02/01/2006] [Indexed: 11/23/2022]
Abstract
Several series of dihydrostilbenamide, imidazo[2,1-a]isoindole, pyrimido[2,1-a]isoindole and phthalazinone derivatives were obtained and their vasorelaxant activity was measured on isolated rat aorta rings pre-contracted with phenylephrine (10(-5)M). Some phthalazinones attained, practically, the total relaxation of the organ at micromolar concentrations. For the most potent compound 9h (EC(50)=0.43microM) the affinities for alpha(1A), alpha(1B) and alpha(1D) adrenergic sub-receptors were determined.
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Affiliation(s)
- Esther del Olmo
- Departamento de Química Farmacéutica, CISET, Facultad de Farmacia, Universidad de Salamanca, 37007 Salamanca, Spain.
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41
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Kočevar M, Požgan F, Kafka S, Polanc S. Pyran-2-ones as Synthons for Pyridazine-3-carboxylic Derivatives. Oxidation of Nitrogen-Rich Compounds. HETEROCYCLES 2006. [DOI: 10.3987/com-06-s(w)11] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Wanno B, Ruangpornvisuti V. Tautomeric and rotameric transformations of 4-methyl-3,6-pyridazinedione isomers. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.08.141] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Xia-Juan Z, Lu-Hua L, Gui-Yu J. Study on the Three-dimensional Quantitative Structure-activity Relationship of Pyridazinonyl-substituted 1,3,4-Thiadiazoles. CHINESE J CHEM 2005. [DOI: 10.1002/cjoc.200591120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Demirayak S, Karaburun AC, Beis R. Some pyrrole substituted aryl pyridazinone and phthalazinone derivatives and their antihypertensive activities. Eur J Med Chem 2005; 39:1089-95. [PMID: 15571871 DOI: 10.1016/j.ejmech.2004.09.005] [Citation(s) in RCA: 141] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2004] [Revised: 07/20/2004] [Accepted: 09/06/2004] [Indexed: 11/20/2022]
Abstract
In this work, some 2-nonsubstituted/2-methyl-/2-(2-acetyloxyethyl)-6-[4-(substituted pyrrol-1-yl)phenyl]-4,5-dihydro-3(2H)-pyridazinone, derivatives and 2-nonsubstituted/2-methyl- 4-[4-(substituted pyrrol-1-yl)phenyl]-1(2H)-phthalazinone derivatives were synthesised by reacting hexan-2,5-dion or 1-aryl-3-carbethoxypent-1,4-diones with corresponding 2-substituted/nonsubstituted 6-(4'-aminophenyl)-4,5-dihydro-3(2H)-pyridazinone or 2-substituted/nonsubstituted-4-(4'-aminophenyl)-(2H)-phthalazinone under Paal-Knorr pyrrole synthesis conditions. The antihypertensive activities of the compounds were examined both in vitro and in vivo. Some pyridazinone derivatives showed appreciable activity.
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Affiliation(s)
- Seref Demirayak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Anadolu, 26470, Eskisehir, Turkey.
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45
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Deeb A, Kotb M, El-Abbasy M. Pyridazine Derivatives and Related Compounds, Part 12: Synthesis of Some Pyridazino [4′,3′:4,5]thieno[3,2-d]1,2,3-triazines. PHOSPHORUS SULFUR 2005. [DOI: 10.1080/104265090517398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Deeb A, Hassaneen M, Kotb M. Pyridazine derivatives and related compounds, part 8: Synthesis of different heterocycles from 3-hydrazinopyridazine. HETEROATOM CHEMISTRY 2005. [DOI: 10.1002/hc.20110] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Csámpai A, Abrán Á, Kudar V, Túrós G, Wamhoff H, Sohár P. Synthesis, NMR, IR spectroscopic and X-ray study of novel [pyridazin-3(2H)-one-6-yl]ferrocenes and related ferrocenophane derivatives. Study on ferrocenes. Part 14. J Organomet Chem 2005. [DOI: 10.1016/j.jorganchem.2004.09.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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48
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Demirayak S, Karaburun AC, Kayagil I, Erol K, Sirmagul B. Some pyridazinone and phthalazinone derivatives and their vasodilator activities. Arch Pharm Res 2004; 27:13-8. [PMID: 14969331 DOI: 10.1007/bf02980038] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In this study, 6-[(4-arylidene-2-phenyl-5-oxoimidazolin-1-yl)phenyl]-4,5-dihydro-3(2H)-pyridazinone and 4-[(4-arylidene-2-phenyl-5-oxoimidazolin-1-yl)phenyl]-1(2H)-phthalazinone derivatives were synthesized by reacting 6-(4-aminophenyl)-4,5-dihydro-3(2H)-pyridazinone or 4-(4-aminophenyl)-1(2H)-phthalazinone compound with different 4-arylidene-2-phenyl-5(4H)-oxazolone derivatives. The vasodilator activities of the compounds were examined both in vitro and in vivo. Some pyridazinone derivatives showed appreciable activity.
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Affiliation(s)
- Seref Demirayak
- Dept. of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Anadolu, Eskisehir, Turkey.
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49
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A theoretical approach to acidity–basicity behaviour of some biologically active 6-phenyl-4,5-dihydro-3(2H)-pyridazinone derivatives. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/j.theochem.2003.08.085] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Ozer G, Saraçoğlu N, Balci M. Synthesis and chemistry of unusual bicyclic endoperoxides containing the pyridazine ring. J Org Chem 2003; 68:7009-15. [PMID: 12946142 DOI: 10.1021/jo0345300] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Inverse-Diels-Alder reaction of dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate with unsaturated bicyclic endoperoxides gave the bicyclic endoperoxides containing the pyridazine ring. The NEt(3) and CoTPP (TPP = tetraphenylporphyrin) catalyzed reaction of endoperoxide 8 resulted in the formation of hydroxy ketone 11 and cis-diol 9. Cleavage of the peroxide linkage in 8 with thiourea provided cis-diol 9. Oxidation of hydroxy ketone 11 and cis-diol 9 led to the phthalazine-5,8-dione 10. Furthermore, the various transformations of the other endoperoxides 19, 20, 22, 23, and 30 resulted in the formation of pyridazine derivatives.
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Affiliation(s)
- Galip Ozer
- Department of Chemistry, Faculty of Art and Sciences, Atatürk University, 25240 Erzurum, Turkey
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