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Plescia F, Maggio B, Daidone G, Raffa D. 4-(3H)-quinazolinones N-3 substituted with a five membered heterocycle: A promising scaffold towards bioactive molecules. Eur J Med Chem 2020; 213:113070. [PMID: 33309162 DOI: 10.1016/j.ejmech.2020.113070] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/21/2020] [Accepted: 11/28/2020] [Indexed: 01/05/2023]
Abstract
The quinazolinone nucleus represents, among the class of fused heterocycles, a very important scaffold to obtain molecules with biological activities. A review of literature revealed how such kind of fused heterocycles, coming from natural or synthetic source, are associated with a wide range of biological activities. This review is mainly directed towards the 4-(3H)-quinazolinones N-3 substituted with a five membered heterocycle in which all the possible combinations of nitrogen, sulfur and oxygen atoms are present.
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Affiliation(s)
- Fabiana Plescia
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche - Sezione di Chimica e Tecnologie Farmaceutiche - Università Degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy
| | - Benedetta Maggio
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche - Sezione di Chimica e Tecnologie Farmaceutiche - Università Degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy
| | - Giuseppe Daidone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche - Sezione di Chimica e Tecnologie Farmaceutiche - Università Degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy
| | - Demetrio Raffa
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche - Sezione di Chimica e Tecnologie Farmaceutiche - Università Degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy.
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2
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El Rayes SM, Ali IAI, Fathalla W, Mahmoud MAA. Synthesis and Biological Activities of Some New Benzotriazinone Derivatives Based on Molecular Docking; Promising HepG2 Liver Carcinoma Inhibitors. ACS OMEGA 2020; 5:6781-6791. [PMID: 32258913 PMCID: PMC7114758 DOI: 10.1021/acsomega.0c00116] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/10/2020] [Indexed: 06/11/2023]
Abstract
In one-pot strategy, diazotization of methyl anthranilate 5 followed by addition of amino acid ester hydrochloride, we have prepared methyl-2-(4-oxobenzotriazin-3(4H)-yl)alkanoates 6a-c. Starting with hydrazides 7a,b, N-alkyl-2-(4-oxobenzotriazin-3(4H)-yl)alkanamides 9-10(a-h) and methyl-2-(2-(4-oxobenzotriazin-3(4H)-yl)alkanamido)alkanoates 11-12(a-e) were prepared via azide coupling. Hydrazones 13-15 were prepared via condensation of hydrazides 7a,b with 4-methoxybenzaldehyde, 4-dimethylaminobenzaldehyde, and/or arabinose. Molecular docking was done for synthesized compounds using MOE 2008-10 software. The compounds 9a, 12a, 12c, 13a, 13b, and 14b have the most pronounced strong binding affinities toward the target E. coli Fab-H receptor, whereas compounds 3, 11e, 12e, and 13a have the most pronounced strong binding affinities toward the target vitamin D receptor. The in vitro antibacterial activities of the highest binding affinity docked compounds were tested against E. coli, Staphylococcus aureus, and Salmonella spp. Majority of the tested compounds showed effective positive results against E. coli, while they were almost inactive against Staphylococcus aureus and Salmonella spp . The in vitro cytotoxic activities of the highest binding affinity-docked compounds were tested against the human liver carcinoma cell line (HepG2). Some compounds showed potent cytotoxic activity with low IC50 values, especially for 3 (6.525 μM) and 13a (10.97 μM) than that for standard drug doxorubicin (2.06 μM).
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Affiliation(s)
- Samir M. El Rayes
- Department
of Chemistry, Faculty of Science, Suez Canal
University, Ismailia 41529, Egypt
| | - Ibrahim A. I. Ali
- Department
of Chemistry, Faculty of Science, Suez Canal
University, Ismailia 41529, Egypt
| | - Walid Fathalla
- Physics
and Math. Engineering Department, Faculty of Engineering, Port-Said University, Port Said 42526, Egypt
| | - Mostafa A. A. Mahmoud
- Department
of Chemistry, Faculty of Science, Suez Canal
University, Ismailia 41529, Egypt
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3
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Jayanthi M, Rajakumar P. Synthesis, Cell Viability, and Flow Cytometric Fluorescence Pulse Width Analysis of Dendrimers with Indazoles Surface Unit. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mani Jayanthi
- Department of Organic Chemistry; University of Madras; Guindy Chennai 600 025 India
| | - Perumal Rajakumar
- Department of Organic Chemistry; University of Madras; Guindy Chennai 600 025 India
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4
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Wang GL, Chen X, Chang YN, Du D, Li Z, Xu XY. Synthesis of 1,2,3-benzotriazin-4-one derivatives containing spirocyclic indoline-2-one moieties and their nematicidal evaluation. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.10.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Hosseinzadeh-Khanmiri R, Moghimi A, Shaabani A, Valizadeh H, Ng SW. Synthesis of 2-(1,2,4-oxadiazol-3-yl)quinazolin-4(3H)-ones from diaminoglyoxime-based nitrones. Mol Divers 2015; 19:501-10. [PMID: 25900668 DOI: 10.1007/s11030-015-9588-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/21/2015] [Indexed: 11/24/2022]
Abstract
Various 2-[5-(aryl)-1,2,4-oxadiazol-3-yl]quinazolin-4(3H)-ones have been synthesized from the reaction of diaminoglyoxime-based nitrones with methyl 2-aminobenzoate or 2-aminobenzamide in the presence of acetic acid at 100 °C. The reaction was extended as a one-pot three-component approach starting from diaminoglyoxime, aldehyde and methyl 2-aminobenzoate.
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6
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Antiviral activities of some synthesized methylsulfanyltriazoloquinazoline derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1177-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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N1-((1H-Indazol-5-yl)methylene)-N2-(2-((2-((2-(((1H-indazol-6-yl)methylene)amino)ethyl)amino)ethyl)amino)ethyl)ethane-1,2-diamine. MOLBANK 2012. [DOI: 10.3390/m770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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8
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Ibrahim TS, Rashad AA, Abdel-Samii ZK, El-Feky SA, Abdel-Hamid MK, Barakat W. Synthesis, molecular modeling and anti-inflammatory screening of new 1,2,3-benzotriazinone derivatives. Med Chem Res 2012. [DOI: 10.1007/s00044-012-9975-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Selvam P, Murugesh N, Chandramohan M, Pannecouque C, DE Clercq E. Synthesis, Antiviral and Cytotoxic Activities of 2-(2-Phenyl carboxylic acid)-3-Phenylquinazolin -4(3H)-one Derivatives. Indian J Pharm Sci 2011; 72:806-9. [PMID: 21969760 PMCID: PMC3178989 DOI: 10.4103/0250-474x.84603] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2009] [Revised: 08/27/2010] [Accepted: 11/16/2010] [Indexed: 12/03/2022] Open
Abstract
A series of novel 2,3-disubstitutedquinazolin-4(3H)-ones have been synthesized by condensation of 2-substituted benzo[1,3]oxazine-4-ones and anthranilic acid. Synthesized compounds were evaluated for in vitro antiviral activity against HIV, HSV and vaccinia viruses. 5-Bromo-2-(6-bromo-4-oxo-2-phenyl-4H-quinazolin-3-yl)-benzoic acid (MBR2) exhibited distinct antiviral activity against Herpes simplex and vaccinia viruses.
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Affiliation(s)
- P Selvam
- Department of Pharmaceutical Chemistry, Devaki Amma Memorial College of Pharmacy, Chelembra, Malapuram - 673 436, India
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10
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11
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Maggio B, Raimondi MV, Raffa D, Plescia F, Cascioferro S, Plescia S, Tolomeo M, Di Cristina A, Pipitone RM, Grimaudo S, Daidone G. Synthesis of substituted 3-amino-N-phenyl-1H-indazole-1-carboxamides endowed with antiproliferative activity. Eur J Med Chem 2011; 46:168-74. [DOI: 10.1016/j.ejmech.2010.10.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 10/15/2010] [Accepted: 10/29/2010] [Indexed: 11/29/2022]
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12
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Patel NB, Patel JC. Synthesis and antimicrobial activity of novel 1,3,4-oxadiazolyl-quinazolin-4(3H)ones. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.383] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Patel NB, Patel JC. Synthesis and antimicrobial activity of 3-(1,3,4-Oxadiazol-2-yl)quinazolin-4(3H)-ones. Sci Pharm 2010; 78:171-93. [PMID: 21179342 PMCID: PMC3002796 DOI: 10.3797/scipharm.0912-16] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Accepted: 04/26/2010] [Indexed: 11/22/2022] Open
Abstract
In attempt to find new pharmacologically active molecules, we report here the synthesis and in vitro antimicrobial activity of various 3-(1,3,4-oxadiazol-2-yl)-quinazolin-4(3H)-ones. The antimicrobial activity of title compounds were examined against two gram positive bacteria (S. aureus, S. pyogenes), two gram negative bacteria (E. coli, P. aeruginosa) and three fungi (C. albicans, A. niger, A. clavatus) using the broth microdilution method. Some derivatives bearing a bromo or iodo group exhibited very good antimicrobial activity.
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Affiliation(s)
- Navin B Patel
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India.
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14
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Reaction of diacetylmonoxime with morpholine N-thiohydrazide in the absence and in presence of a metal ion: Facile synthesis of a thiadiazole derivative with non-bonded S⋯S interaction. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.06.091] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Synthesis and Biological Evaluation of Some New2-propyl- 4(3H)-Quinazolinone Derivatives as Anti-bacteria. JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE 2008. [DOI: 10.5012/jkcs.2008.52.3.328] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Selvam P, Vijayalakshimi P, Smee DF, Gowen BB, Julander JG, Day CW, Barnard DL. Novel 3-sulphonamido-quinazolin-4(3H)-one derivatives: microwave-assisted synthesis and evaluation of antiviral activities against respiratory and biodefense viruses. Antivir Chem Chemother 2008; 18:301-5. [PMID: 18046963 DOI: 10.1177/095632020701800506] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We designed and synthesized novel 2,3-disubstituted quinazolin-4(3H)-ones by microwave technique and characterized them by spectral analysis. Synthesized compounds were screened for cytotoxicity and for antiviral activity against influenza A (H1N1, H3N2 and H5N1), severe acute respiratory syndrome corona, dengue, yellow fever, Venezuelan equine encephalitis (VEE), Rift Valley fever, and Tacaribe viruses in cell culture. A neutral red uptake assay was used to determine 50% virus-inhibitory concentrations (EC50) of test compounds and their 50% cytotoxicity concentration (CC50) in uninfected Madin-Darby canine kidney, Vero, and Vero 76 cells; selectivity indices (ratio of CC50 to EC50) were derived from the data. The compound 4-(6,8-dibromo-4-oxo-2-phenyl quinazolin-3(4H)-yl)-N-(4,5-dimethyloxazol-2yl) benzenesulphonamide 15 inhibited the replication of avian influenza (H5N1) virus (EC50 = 8.4 microg/ml, CC50 > 100 microg/ml, SI > 11.9) as did 4-(6-bromo-4oxo-2phenylquinazolin-3(4H)-yl) benzene]sulphonamide 5 (EC50 = 3 microg/ml, CC50 = 32 microg/ml, SI = 11). Compound 5 was also moderately active against VEE and Tacaribe viruses. The methodology described in this report is applicable for rapid synthesis of many compounds with potential antiviral properties.
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Affiliation(s)
- Periyasamy Selvam
- Arulmigu Kalasalingam College of Pharmacy, Krishnankoil-626190, India.
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17
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Foks H, Pancechowska-Ksepko D, Kedzia A, Zwolska Z, Janowiec M, Augustynowicz-Kopeć E. Synthesis and antibacterial activity of 1H-pyrazolo[3,4-b]pyrazine and -pyridine derivatives. ACTA ACUST UNITED AC 2005; 60:513-7. [PMID: 15950227 DOI: 10.1016/j.farmac.2005.05.002] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2005] [Revised: 04/07/2005] [Accepted: 05/04/2005] [Indexed: 11/17/2022]
Abstract
The investigations of new pyrazine and pyridine derivatives showing an antibacterial activity have been made. Upon treatment of 3-chloro-2-cyanopyrazine [1] and 2-chloro-3-cyanopyridine with 1,1-dimethyl-hydrazine, 1-aminopiperidine and 1-amino-4-methylpiperazine, either the pyrazolo-pyrazine (1), and -pyridine (2) derivatives, or ammonium salts (3-8) were obtained, according to the reaction conditions. Compound 1 was obtained in the reaction of the initial nitrile with methylhydrazine as well. The reactions of 1 gave the following derivatives: acylation-(9), that with p-chlorobenzoic aldehyde-(10), and with phenyl-isothiocyanate-(11). 3-Chloro-2-cyanopyrazine treated with hydrazine hydrate gave amidrazone (12), which upon condensation with p-chlorobenzoic aldehyde produced (13). The compounds obtained were tested in vitro for their tuberculostatic activity. The minimal inhibitory concentration (MIC) values were within 22-100 microg/cm3. Compounds 1, 5 and 6 were also tested in vitro for their activity towards 25 strains of anaerobic, and 25 strains of aerobic bacteria. They appeared to be of elevated activity towards the anaerobes and of low one towards the aerobes (Table 2).
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Affiliation(s)
- Henryk Foks
- Department of Organic Chemistry, Medical University of Gdańsk, 107, Al. Gen. J. Hallera, 80-416 Gdańsk, Poland.
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18
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Daidone G, Maggio B, Raffa D, Plescia S, Schillaci D, Valeria Raimondi M. Synthesis and in vitro antileukemic activity of new 4-triazenopyrazole derivatives. ACTA ACUST UNITED AC 2004; 59:413-7. [PMID: 15120321 DOI: 10.1016/j.farmac.2004.01.016] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2003] [Accepted: 01/13/2004] [Indexed: 10/26/2022]
Abstract
Several new 4-(3,3-dimethyltriazeno)-5-benzamidopyrazole derivatives were prepared by reacting 4-diazo-5-benzamidopyrazole derivatives with dimethylamine. The compounds were tested at 10 microM for their vitro antileukemic activity against K562 (Human chronic myelogenous leukemia) and Raji (human Burkitt limphoma ) cell lines. Dacarbazine and methotrexate were used for comparative purpose. The 3-methyl-4-(3,3-dimethyltriazeno)-5-(substituted benzamido)pyrazoles, bearing the pyrazole nucleus free at 1 position, resulted more active than the 1-(substituted phenyl)-3-methyl-4-(3,3-dimethyltriazeno)-5-benzamidopyrazoles. Dacarbazine at 10 microM showed no activity in the above tests. The observed difference among Dacarbazine and the active 4-triazenopyrazoles migth be explained admiting that these last compounds, differently by Dacarbazine, did not follow a mechanism of action based on the cytochrome P-450 induced demethylation. The most active compound 2d showed growth inhibition values of 97.8 and 99.4% against K562 and Raji cell lines respectively. Methotrexate inhibition values at 0.2 microM against the above cell lines were 86.7 and 75.1% respectively.
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Affiliation(s)
- Giuseppe Daidone
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Via Archirafi, 32, 90123 Palermo, Italy.
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19
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Raffa D, Edler MC, Daidone G, Maggio B, Merikech M, Merickech M, Plescia S, Schillaci D, Bai R, Hamel E. Synthesis, cytotoxicity, and inhibitory effects on tubulin polymerization of a new 3-heterocyclo substituted 2-styrylquinazolinones. Eur J Med Chem 2004; 39:299-304. [PMID: 15072839 DOI: 10.1016/j.ejmech.2003.12.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2002] [Revised: 11/18/2003] [Accepted: 12/02/2003] [Indexed: 11/30/2022]
Abstract
In order to study the influence of 3-substitution on the cytotoxic activity of 2-styrylquinazolinones, new 6-chloro-2-styryl-3-(heteroaryl)-4(3H)-quinazolinones were synthesized by refluxing equimolar amounts of 6-chloro-2-methyl-3-(heteroaryl)-4(3H)-quinazolinones and benzaldehyde in glacial acetic acid. At 1 microg ml(-1) concentration, almost all 2-styrylquinazolinones showed some cytotoxic activity against the L1210 and K562 leukemia cell lines. However, only 6-chloro-2-styryl-3-(pyrimidin-2yl)-4(3H)-quinazolinone inhibited the growth of these cells by over 50%. This last compound was also the only member of the series that inhibited tubulin polymerization, with an IC(50) value of 5.8 versus 3.2 microM for colchicine. It was also examined for effects on the growth of human MCF7 breast carcinoma cells and Burkitt lymphoma CA46 cells, which had IC(50) values of 0.34 and 1.0 microM, respectively. At 10 microM 6-chloro-2-styryl-3-(pyrimidin-2yl)-4(3H)-quinazolinone induced G2/M arrest (66%) in Burkitt cells, with a mitotic index of 20%. At 3.4 microM, it caused disruption of the cellular microtubule system of the MCF7 cells. Both these cellular effects are consistent with its mechanism of action resulting from its inhibitory effect on tubulin assembly.
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Affiliation(s)
- Demetrio Raffa
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Università di Palermo, via Archirafi 32, 90123 Palermo, Italy
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20
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Ghabrial SS, Gaber HM. Dipolar Cycloaddition Reactions with Quinazolinones: A New Route for the Synthesis of Several Annelated Pyrrolo- and Pyridazinoquinazoline Derivatives. Molecules 2003. [PMCID: PMC6146938 DOI: 10.3390/80500401] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The novel 2-aryl-3a,4,12,12a-tetrahydropyrrolo[3',4':4,3]-pyridazino[6,1-b]-quinazoline-1,3,6-triones (6a–d), 2-aryl-10-oxopyridazino[6,1-b]-quinazoline-3-thio-carboxamides (10a–d) and 2-aryl-3-nitro-1,2,3,4-tetrahydro-pyridazino[6,1-b]quinazolin-10-ones (12a–d) were synthesized via a new, facile one step route involving the reactions of the zwitterion 4, formed in situ, with a variety of N-arylmaleimides 5, 3-aryl-2-cyano-thioacrylamides 8 and ω-nitrostyrenes 11. Dehydrogenation of the tetrahydro derivatives 6a–d and 12a–d in nitrobenzene resulted in the formation of 2-arylpyrrolo[3',4':4,3]-pyridazino[6,1-b]quinazoline-1,3,6-triones (7a–d) and 2-aryl-3-nitropyridazino[6,1-b]quinazolin-10-ones (13a–d), respectively. The structures of the products were confirmed by elemental analysis and spectral data.
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21
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Raffa D, Daidone G, Plescia F, Schillaci D, Maggio B, Torta L. Synthesis and antifungal activity of new N-(1-phenyl-4-carbetoxypyrazol-5-yl)-, N-(indazol-3-yl)- and N-(indazol-5-yl)-2-iodobenzamides. FARMACO (SOCIETA CHIMICA ITALIANA : 1989) 2002; 57:183-7. [PMID: 11989795 DOI: 10.1016/s0014-827x(01)01190-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
N-(1-Phenyl-4-carbetoxypyrazol-5-yl)-, N-(indazol-3-yl)- and N-(indazol-5-yl)-2-iodobenzamides 6, with a Benodanil-like structure, were synthesized by refluxing in acetic acid the corresponding benzotriazinones 5 with potassium iodide for 1 h in order to study the role on the antifungal activity of the N-substitution with an aromatic heterocyclic system on benzamide moiety. Among the tested iododerivatives, compounds 6d,f,g,h possess interesting activities toward some phytopathogenic fungal strains.
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Affiliation(s)
- Demetrio Raffa
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Italy.
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22
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Maggio B, Daidone G, Raffa D, Plescia S, Mantione L, Catena Cutuli VM, Mangano NG, Caruso A. Synthesis and pharmacological study of ethyl 1-methyl-5-(substituted 3,4-dihydro-4-oxoquinazolin-3-yl)-1H-pyrazole-4-acetates. Eur J Med Chem 2001; 36:737-42. [PMID: 11672883 DOI: 10.1016/s0223-5234(01)01259-4] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Several new ethyl 1-methyl-5-(substituted 3,4-dihydro-4-oxoquinazolin-3-yl)-1H-pyrazole-4-acetates 2, substituted at 2 and, alternatively at, 6, 7 or 8 positions of the quinazolinone nucleus, were synthesised. The compounds were screened for their analgesic and antiinflammatory activities, acute toxicity and ulcerogenic effect. Substitution in the benzene moiety of the quinazolinone ring did not show any advantage for the analgesic activity, whereas it improved in some cases the antiinflammatory activity. Some compounds showed appreciable antiinflammatory activity and, at the same time, very low ulcerogenic index.
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Affiliation(s)
- B Maggio
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, via Archirafi, 32, I-90123 Palermo, Italy
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