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Prekupec S, Makuc D, Plavec J, Kraljević S, Kralj M, Pavelić K, Andrei G, Snoeck R, Balzarini J, De Clercq E, Raić-Malić S, Mintas M. Antiviral and Cytostatic Evaluation of the Novel 6-acyclic Chain Substituted Thymine Derivatives. ACTA ACUST UNITED AC 2016; 16:327-38. [PMID: 16245648 DOI: 10.1177/095632020501600505] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A series of the novel 5-methyl pyrimidine derivatives with an acyclic side chain at the C-6 position were synthesized using lithiation of a 2,4-dimethoxy-5,6-dimethyl pyrimidine and subsequent nucleophilic addition or substitution reactions of the organolithium intermediate thus obtained with acetaldehyde, epichlorhydrine, fluorinated ketones and fluorinated ester. The novel compounds were evaluated for their cytostatic and antiviral activities. Among all the compounds evaluated, two fluorinated acyclic pyrimidine derivatives showed the highest cytostatic activities. The compound containing a 2-hydroxy-3,3,3-trifluoro-1-propenyl side chain exhibited a pronounced effect against breast carcinoma (MCF-7, IC50=8.38 μg/ml), while the compound with a 2-fluoromethyl-2-acetoxypropyl chain exhibited moderate effect against cervical carcinoma (HeLa, IC50=19.73 μg/ml).
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Affiliation(s)
- Svjetlana Prekupec
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
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2
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Wittine K, Ratkaj I, Benci K, Suhina T, Mandić L, Ilić N, Pavelić SK, Pavelić K, Mintas M. The novel coumarin[3,2-c]thiophene and its hydroxamic acid and ureido derivatives: synthesis and cytostatic activity evaluations. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1523-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Abstract
Abstract
The effect of argon and oxygen sputtering on carbon contaminant buildup on ZnO during XPS (X-ray photoelectron spectroscopy) analysis has been examined. Argon and oxygen sputtering cause a rapid decline in hydroxyl oxygen and contaminant carbon content at the surface. Reduction to metallic zinc is not observed. In a carefully baked instrument after sputtering a stable clean surface could be maintained over several hours of analysis.
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Affiliation(s)
- M. Mintas
- Kernforschungszentrum Karlsruhe, Institut für Radiochemie
| | - G. W. Filby
- Kernforschungszentrum Karlsruhe, Institut für Radiochemie
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4
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Benci K, Mandić L, Suhina T, Sedić M, Klobučar M, Pavelić SK, Pavelić K, Wittine K, Mintas M. Novel coumarin derivatives containing 1,2,4-triazole, 4,5-dicyanoimidazole and purine moieties: synthesis and evaluation of their cytostatic activity. Molecules 2012; 17:11010-25. [PMID: 22971585 PMCID: PMC6268888 DOI: 10.3390/molecules170911010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 08/23/2012] [Accepted: 09/03/2012] [Indexed: 11/16/2022] Open
Abstract
We report here on the synthesis and in vitro anti-tumor effects of a series of novel 1,2,4-triazole (compounds 3–6), 4,5-dicyanoimidazole (compound 7), and purine (compounds 8–13) coumarin derivatives and their acyclic nucleoside analogues 14–18. Structures of novel compounds 3–18 were deduced from their 1H- and 13C-NMR and corresponding mass spectra. Results of anti-proliferative assays performed on a panel of selected human tumor cell lines revealed that compound 6 had moderate cytostatic activity against the HeLa cell line (IC50 = 35 µM), whereas compound 10 showed moderate activity against the HeLa (IC50 = 33 µM), HepG2 (IC50 = 25 µM) and SW620 (IC50 = 35 µM) cell lines. These compounds showed no cytotoxic effects on normal (diploid) human fibroblasts.
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Affiliation(s)
- Krešimir Benci
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb 10000, Croatia
| | - Leo Mandić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb 10000, Croatia
| | - Tomislav Suhina
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb 10000, Croatia
| | - Mirela Sedić
- Department of Biotechnology, University of Rijeka, Slavka Krautzeka 83 A, Rijeka 51000, Croatia
| | - Marko Klobučar
- Department of Biotechnology, University of Rijeka, Slavka Krautzeka 83 A, Rijeka 51000, Croatia
| | | | - Krešimir Pavelić
- Department of Biotechnology, University of Rijeka, Slavka Krautzeka 83 A, Rijeka 51000, Croatia
| | - Karlo Wittine
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb 10000, Croatia
| | - Mladen Mintas
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, Zagreb 10000, Croatia
- Author to whom correspondence should be addressed; ; Tel.: +385-1-4597-214; Fax: +385-1-4597-250
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5
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Završnik D, Muratović S, Makuc D, Plavec J, Cetina M, Nagl A, De Clercq E, Balzarini J, Mintas M. Benzylidene-bis-(4-hydroxycoumarin) and benzopyrano-coumarin derivatives: synthesis, ¹H/¹³C-NMR conformational and X-ray crystal structure studies and in vitro antiviral activity evaluations. Molecules 2011; 16:6023-40. [PMID: 21772234 PMCID: PMC6264767 DOI: 10.3390/molecules16076023] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 07/06/2011] [Accepted: 07/12/2011] [Indexed: 11/17/2022] Open
Abstract
We report on the synthesis of 4-hydroxycoumarin dimers 1-15 bearing an aryl substituent on the central linker and fused benzopyranocoumarin derivatives 16-20 and on their in vitro broad anti-DNA and RNA virus activity evaluations. The chemical identities and structure of compounds 1-20 were deduced from their homo- and heteronuclear NMR measurements whereas the conformational properties of 5, 14 and 20 were assessed by the use of 1D difference NOE enhancements. Unequivocal proof of the stereostructure of compounds 7, 9, 16 and 18 was obtained by single crystal X-ray diffraction method. The X-ray crystal structure analysis revealed that two 4-hydroxycoumarin moieties in the 4-trifluoromethylphenyl- and 2-nitrophenyl derivatives (compounds 7 and 9, respectively) are intramolecularly hydrogen-bonded between hydroxyl and carbonyl oxygen atoms. Consequently, the compounds 7 and 9 adopt conformations in which two 4-hydroxy-coumarin moieties are anti-disposed. Antiviral activity evaluation results indicated that the 4-bromobenzylidene derivative of bis-(4-hydroxycoumarin) (compound 3) possesses inhibitory activity against HSV-1 (KOS), HSV-2 (G), vaccinia virus and HSV-1 TK⁻ KOS (ACVr) at a concentration of 9-12 μM and at a minimum cytotoxic concentration (MCC) greater than 20 μM. Compounds 4-6, 8, and 20 were active against feline herpes virus (50% effective concentration, EC₅₀ = 5-8.1 μM), that is at a 4-7-fold lower concentration than the MCC.
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Affiliation(s)
- Davorka Završnik
- Faculty of Pharmacy, University of Sarajevo, Čekaluša 90, Sarajevo BA-71000, Bosnia and Hercegovina
| | - Samija Muratović
- Faculty of Pharmacy, University of Sarajevo, Čekaluša 90, Sarajevo BA-71000, Bosnia and Hercegovina
| | - Damjan Makuc
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, Ljubljana SI-1000, Slovenia
- EN-FIST Centre of Excellence, Dunajska 156, Ljubljana SI-1000, Slovenia
| | - Janez Plavec
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, Ljubljana SI-1000, Slovenia
- EN-FIST Centre of Excellence, Dunajska 156, Ljubljana SI-1000, Slovenia
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva cesta 5, Ljubljana SI-1000, Slovenia
| | - Mario Cetina
- Department of Applied Chemistry, Faculty of Textile Technology, University of Zagreb, Prilaz baruna Filipovića 28a, Zagreb HR-10000, Croatia
| | - Ante Nagl
- Department of Applied Chemistry, Faculty of Textile Technology, University of Zagreb, Prilaz baruna Filipovića 28a, Zagreb HR-10000, Croatia
| | - Erik De Clercq
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, Minderbroedersstraat 10, Leuven B-3000, Belgium
| | - Jan Balzarini
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, Minderbroedersstraat 10, Leuven B-3000, Belgium
| | - Mladen Mintas
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, Zagreb HR-10000, Croatia
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6
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Benci K, Suhina T, Mandić L, Pavelić SK, Paravić AT, Pavelić K, Balzarini J, Wittine K, Mintas M. Novel 1,2,4-triazole and purine acyclic cyclopropane nucleoside analogues: synthesis, antiviral and cytostatic activity evaluations. Antivir Chem Chemother 2011; 21:221-30. [PMID: 21730369 DOI: 10.3851/imp1762] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
BACKGROUND Several published studies indicate that the acyclic guanine nucleoside analogues possessing bis(1,2-hydroxymethyl) substituted cyclopropane rings mimicking the sugar moiety are potent inhibitors of replication of several herpes viruses. METHODS Established synthetic methods and antiviral and cytostatic activity assays were used for the evaluation of new 1,2,4-triazole and purine acyclic nucleoside analogues. RESULTS The synthesis of new types of acyclic nucleoside analogues which incorporate 1,2,4-triazole or purine moiety bound via flexible methylenic spacer to the bis(1,2-hydroxymethyl) cyclopropane ring. None of the new compounds showed pronounced antiviral activities at subtoxic concentrations on a broad panel of DNA and RNA viruses. Evaluation of their affinity for herpes simplex type 1 (HSV-1) and varicella-zoster virus-encoded thymidine kinases (VZV TK) also showed that none of the compounds was able to significantly inhibit 1 μM deoxythymidine phosphorylation by HSV-1 and VZV TK at 500 μM concentrations. The in vitro cytostatic activity evaluation results indicated a weak antiproliferative activity for all tested compounds. Only 6-pyrrolylpurine derivative bearing a carboxylic group substituted cyclopropane ring produced a rather slight inhibitory effect at higher micromolar concentrations on a breast carcinoma cell line (MCF-7) and no cytotoxic effect on human normal fibroblasts (WI 38). CONCLUSIONS The lack of antiherpetic activity may be due to poor, if any, recognition of the compounds by virus-induced nucleoside kinases as an alternative substrate to become metabolically activated.
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Affiliation(s)
- Krešimir Benci
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
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7
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Wittine K, Babić MS, Košutić M, Cetina M, Rissanen K, Pavelić SK, Paravić AT, Sedić M, Pavelić K, Mintas M. The new 5- or 6-azapyrimidine and cyanuric acid derivatives of l-ascorbic acid bearing the free C-5 hydroxy or C-4 amino group at the ethylenic spacer: CD-spectral absolute configuration determination and biological activity evaluations. Eur J Med Chem 2011; 46:2770-85. [PMID: 21524828 DOI: 10.1016/j.ejmech.2011.03.066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 03/17/2011] [Accepted: 03/31/2011] [Indexed: 10/18/2022]
Abstract
We report on the synthesis of the novel types of cytosine and 5-azacytosine (1-9), uracil and 6-azauracil (13-18) and cyanuric acid (19-22) derivatives of l-ascorbic acid, and on their cytostatic activity evaluation in human malignant tumour cell lines vs. their cytotoxic effects on human normal fibroblasts (WI38). The CD spectra analysis revealed that cytosine (5 and 6), uracil (14-16), 6-azauracil (17) and cyanuric acid (21) derivatives of l-ascorbic acid bearing free amino group at ethylenic spacer existed as a racemic mixture of enantiomers, whereas L-ascorbic derivatives containing the C-5 substituted hydroxy group at the ethylenic spacer were obtained in (4R, 5S) enantiomeric form. The stereochemistry of 6-azauracil derivative of l-ascorbic acid (13) was confirmed by X-ray crystal structure analysis. The molecules are self-assembled by one N-H⋯O hydrogen bond, two C-H⋯O hydrogen bonds and two C-H⋯π interactions into three-dimensional framework. Cytostatic activity evaluation indicated that compounds did not show distinctive antiproliferative effects on tested cell line panel. However, the cytosine derivative of l-ascorbic acid (1) containing the C4-C5 double bond conjugated with the lactone moiety produced rather marked growth inhibitory effect on hepatocellular carcinoma (HepG2), metastatic breast epithelial carcinoma (MCF-7) and cervical carcinoma (HeLa) cell lines at micromolar concentrations, but also exerted strong cytostatic effect on WI38. 5-Azacytosine derivative of l-ascorbic acid (2) with a double bond at the C4-C5 conjugated with the lactone moiety displayed potent antitumour activity against tested tumour cell lines with meanIC(50) values ranging from 0.92 to 5.91 μM. However, this compound also exhibited pronounced cytotoxicity towards WI38. Flow cytometric analysis of the cell cycle revealed that compound 2 triggers S phase arrest, which clearly demonstrates its interference with DNA replication, a key event of cell proliferation. Marked anticancer efficacy of compound 2 supports further in vivo investigation into its possible clinical utility.
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Affiliation(s)
- K Wittine
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, HR-10000 Zagreb, Croatia
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8
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Pavelić SK, Sedić M, Poznić M, Rajić Z, Zorc B, Pavelić K, Balzarini J, Mintas M. Evaluation of in vitro biological activity of O-alkylated hydroxamic derivatives of some nonsteroidal anti-inflammatory drugs. Anticancer Res 2010; 30:3987-3994. [PMID: 21036712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM Several published studies suggest that nonsteroidal anti-inflammatory drugs (NSAIDs) are promising anticancer agents. This study examined the in vitro effect of O-alkylated NSAID hydroxamic acid derivatives 3a-i on cell survival for a panel of human tumour cell lines, their cytotoxicity on normal human fibroblasts and their antiviral activity. MATERIALS AND METHODS Established methods of cell viability testings, cell cycle analyses and Western blot assays were used. RESULTS O-Alkylated NSAID hydroxamic acid derivatives exerted poor antiviral activity butreduced the viability of the studied tumour cell lines in a concentration-dependent manner showing low cytotoxic effect on normal fibroblasts. Compounds 3a and 3i were shown to be potent inhibitors of the growth of MIA PaCa-2 cell line. They induced p53-independent S-phase arrest and triggered caspase 3-dependent apoptosis. CONCLUSION Two novel O-alkylated NSAID hydroxamic acid derivatives may be useful in the treatment of pancreatic cancer and should be further evaluated in vivo.
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9
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Benci K, Wittine K, Radan M, Cetina M, Sedić M, Kraljević Pavelić S, Pavelić K, Clercq ED, Mintas M. The unsaturated acyclic nucleoside analogues bearing a sterically constrained (Z)-4′-benzamido-2′-butenyl moiety: Synthesis, X-ray crystal structure study, cytostatic and antiviral activity evaluations. Bioorg Med Chem 2010; 18:6249-57. [DOI: 10.1016/j.bmc.2010.07.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Revised: 07/07/2010] [Accepted: 07/15/2010] [Indexed: 11/25/2022]
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Rajic Z, Butula I, Zorc B, Kraljevic Pavelic S, Hock K, Pavelic K, Naesens L, De Clercq E, Balzarini J, Przyborowska M, Ossowski T, Mintas M. Cytostatic and Antiviral Activity Evaluations of Hydroxamic Derivatives of Some Non-steroidal Anti-inflammatory Drugs. Chem Biol Drug Des 2009; 73:328-38. [DOI: 10.1111/j.1747-0285.2009.00774.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Perković I, Butula I, Zorc B, Hock K, Pavelić SK, Pavelić K, Clercq ED, Balzarini J, Mintas M. Novel Lipophilic Hydroxyurea Derivatives: Synthesis, Cytostatic and Antiviral Activity Evaluations. Chem Biol Drug Des 2008; 71:546-53. [DOI: 10.1111/j.1747-0285.2008.00660.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gazivoda T, Raić-Malić S, Kristafor V, Makuc D, Plavec J, Bratulić S, Kraljević-Pavelić S, Pavelić K, Naesens L, Andrei G, Snoeck R, Balzarini J, Mintas M. Synthesis, cytostatic and anti-HIV evaluations of the new unsaturated acyclic C-5 pyrimidine nucleoside analogues. Bioorg Med Chem 2008; 16:5624-34. [PMID: 18424155 PMCID: PMC7127491 DOI: 10.1016/j.bmc.2008.03.074] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 03/20/2008] [Accepted: 03/28/2008] [Indexed: 11/26/2022]
Abstract
A series of the novel C-5 alkynyl pyrimidine nucleoside analogues (1–14) in which the sugar moiety was replaced by the conformationally restricted Z- and E-2-butenyl spacer between the phthalimido and pyrimidine ring were synthesized by using Sonogashira cross-coupling reaction. Cytostatic activity evaluation of the novel compounds showed that E-isomers exhibited, in general, better cytostatic activities than the corresponding Z-isomers. E-isomer 14 exhibited the best cytostatic effect against all evaluated malignant cell lines, particularly against hepatocellular carcinoma (Hep G2, IC50 = 4.3 μM). However, this compound was also cytotoxic to human normal fibroblasts (WI 38). Its Z-isomer 7 showed highly specific antiproliferative activity against Hep G2 (IC50 = 18 μM) and no cytotoxicity to WI 38. Moreover, compounds 3, 4 and 14 expressed some marginal inhibitory activity against HIV-1 and HIV-2.
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Affiliation(s)
- Tatjana Gazivoda
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
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13
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Cetina M, Košutić-Hulita N, Nagl A, Mintas M. Crystal and molecular structures of atropisomericN-aryl-1,2,3,4-tetrahydro-3,3-dimethyl-2,4-quinolinediones. Heteroatom Chem 2008. [DOI: 10.1002/hc.20436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Wittine K, Benci K, Pavelić SK, Pavelić K, Mintas M. The novel unsaturated acyclic nucleoside analogues: cytostatic and antiviral activity evaluations. Nucleic Acids Symp Ser (Oxf) 2008; 52:601-602. [PMID: 18776523 DOI: 10.1093/nass/nrn304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The novel pyrimidine (3-6) and purine (12-19) acyclic nucleoside analogues containing (Z) 4-amino or 4-aminohydrochloride-2-butenyl side chain (Fig.) were synthesized to evaluate their antiviral and cytostatic activity potency.
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Affiliation(s)
- Karlo Wittine
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia
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15
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Gazivoda T, Sokcević M, Kralj M, Suman L, Pavelić K, De Clercq E, Andrei G, Snoeck R, Balzarini J, Mintas M, Raić-Malić S. Synthesis and antiviral and cytostatic evaluations of the new C-5 substituted pyrimidine and furo[2,3-d]pyrimidine 4',5'-didehydro-L-ascorbic acid derivatives. J Med Chem 2007; 50:4105-12. [PMID: 17672445 DOI: 10.1021/jm070324z] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The novel C-5 alkynyl substituted pyrimidine (1-11) and furo[2,3-d]pyrimidine derivatives (12-22) of l-ascorbic acid were synthesized by coupling of 5-iodouracil-4',5'-didehydro-5',6'-dideoxy-l-ascorbic acid with terminal alkynes by using Sonogashira cross-coupling reaction conditions. The new compounds were evaluated for their cytostatic and antiviral activities. Among all evaluated compounds, the octynyl-substituted uracil derivative of l-ascorbic acid (3) exhibited the most pronounced cytostatic activities against all examined tumor cell lines (IC50 = 2-12 microM). Pyrimidine derivatives of l-ascorbic acid containing p-substituted phenylacetylene groups (8-11) displayed also a rather pronounced (IC50 = 3-37 microM) inhibitory effect toward all tumor cell lines. From the bicyclic series of compounds, 6-butylfuro[2,3-d]pyrimidine derivative (12) and 6-p-bromophenylfuro[2,3-d]pyrimidine derivative (19) showed the highest cytostatic activity (IC50 = 4.5-20 microM), particularly against malignant leukemia (L1210) and T-lymphocyte (Molt4/C8 and CEM) cells. Compounds 3 and 9 showed specific albeit moderate activity against cytomegalovirus (CMV, Davis strain, EC50 = 1.8 and 3.8 microM, respectively, for compounds 3 and 9) at a approximately 5-fold lower concentration than that required to show cytotoxicity.
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Affiliation(s)
- Tatjana Gazivoda
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
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16
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Prekupec S, Makuc D, Plavec J, Suman L, Kralj M, Pavelić K, Balzarini J, Clercq ED, Mintas M, Raić-Malić S. Novel C-6 Fluorinated Acyclic Side Chain Pyrimidine Derivatives: Synthesis, 1H and 13C NMR Conformational Studies, and Antiviral and Cytostatic Evaluations. J Med Chem 2007; 50:3037-45. [PMID: 17539622 DOI: 10.1021/jm0614329] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthetic route for introduction of a fluoroalkyl (7-12, 14), fluoroalkenyl (15 and 16), fluorophenylalkyl (17, 19, 20, and 22), and fluorophenylalkenyl (18, 21) side chain at C-6 of the pyrimidine involved the lithiation of the pyrimidine derivatives 3 and 3a and subsequent nucleophilic addition or substitution reactions of the organolithium intermediate thus obtained with various electrophiles. Conformational properties of the novel fluorinated pyrimidine derivatives were assessed by the use of 1D difference NOE enhancements and C-F coupling constants. Compounds 4-22 were evaluated for their antiviral and cytostatic activities. Of all compounds evaluated, the 5-bromopyrimidine derivatives 5 and 6 showed the highest inhibitory activities. Among the series of fluoroalkylated pyrimidines, which is generally more active than the series of fluorophenylalkylated pyrimidines, compounds 8 and 14 displayed moderate cytostatic activities against the tested tumor cell lines. Moreover, compound 8 containing a 2-fluoromethylpropyl side chain expressed some but not highly specific activity against varicella-zoster virus (VZV). From C-6 fluorophenylalkylated pyrimidine derivatives, 17a and 21 showed a slight activity against cytomegalovirus (CMV), VZV, and Coxsackie B4 virus, respectively. Besides, compounds 17a and 21 showed no cytotoxic effect.
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Affiliation(s)
- Svjetlana Prekupec
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia
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17
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Kristafor V, Raić-Malić S, Cetina M, Kralj M, Suman L, Pavelić K, Balzarini J, De Clercq E, Mintas M. Synthesis, X-ray crystal structural study, antiviral and cytostatic evaluations of the novel unsaturated acyclic and epoxide nucleoside analogues. Bioorg Med Chem 2006; 14:8126-38. [PMID: 16889965 DOI: 10.1016/j.bmc.2006.07.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 07/07/2006] [Accepted: 07/17/2006] [Indexed: 11/29/2022]
Abstract
A series of the novel purine and pyrimidine nucleoside analogues were synthesised in which the sugar moiety was replaced by the 4-amino-2-butenyl (2-6 and 10-18) and oxiranyl (8 and 20) spacer. The Z- (2-6) and E-isomers (10-18) of unsaturated acyclic nucleoside analogues were synthesized by condensation of 2- and 6-substituted purine and 5-substituted uracil bases with Z- (1) or E-phthalimide (9) precursors. The oxiranyl nucleoside analogues (8 and 20) were obtained by epoxidation of 1 and 9 with m-chloroperoxybenzoic acid and subsequent coupling with adenine. The new compounds were evaluated for their antiviral and antitumor cell activities. Among the olefinic nucleoside analogues, Z-isomer of adenine containing 4-amino-2-butenyl side chain (6) exhibited the best cytostatic activities, particularly against colon carcinoma (SW 620, IC50 = 26 microM). Its E-isomer 15 did not show any antiproliferative activity against malignant tumor cell lines, except for a slight inhibition of colon carcinoma (SW 620, IC50 = 56.5 microM) cells. In general, Z-isomers showed better cytostatic activities than the corresponding E-isomers. (Z)-4-Amino-2-butenyl-adenine nucleoside analogue 6 showed albeit modest but selective activity against HIV-1 (EC50 = 4.83 microg mL(-1)).
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Affiliation(s)
- Vedran Kristafor
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia
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Gazivoda T, Raić-Malić S, Marjanović M, Kralj M, Pavelić K, Balzarini J, De Clercq E, Mintas M. The novel C-5 aryl, alkenyl, and alkynyl substituted uracil derivatives of L-ascorbic acid: synthesis, cytostatic, and antiviral activity evaluations. Bioorg Med Chem 2006; 15:749-58. [PMID: 17092728 DOI: 10.1016/j.bmc.2006.10.046] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 10/18/2006] [Accepted: 10/23/2006] [Indexed: 10/24/2022]
Abstract
The novel C-5 substituted uracil derivatives of l-ascorbic acid were synthesized by coupling of 5-iodouracil-4,5-didehydro-5,6-dideoxy-l-ascorbic acid with unsaturated stannanes under Stille reaction conditions. The new compounds were evaluated for their antitumoral and antiviral activities. Among all compounds evaluated the 5-propynyl substituted uracil derivative of l-ascorbic acid (7) exhibited the most pronounced cytostatic activities against all examined tumor cell lines (IC(50): 0.2-0.78 microM). However, this compound was also cytotoxic to human normal fibroblasts WI 38. The 5-(phenylethynyl)uracil-2,3-di-O-benzylated l-ascorbic acid derivative (4) exhibited an albeit slight (IC(50): 55-108 microM), but selective inhibitory effect toward all tumor cell lines except for cervical carcinoma (HeLa), pancreatic carcinoma (MiaPaCa-2), laryngeal carcinoma (Hep-2), and colon carcinoma (SW 620), and no cytotoxicity to normal human fibroblast (WI 38). Compound 7 showed some, not highly specific, inhibitory potential against vesicular stomatitis virus, Coxsackie B4 virus, and Sindbis viruses (EC(50): 1.6 microM).
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Affiliation(s)
- Tatjana Gazivoda
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
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Gazivoda T, Wittine K, Lovrić I, Makuc D, Plavec J, Cetina M, Mrvos-Sermek D, Suman L, Kralj M, Pavelić K, Mintas M, Raić-Malić S. Synthesis, structural studies, and cytostatic evaluation of 5,6-di-O-modified L-ascorbic acid derivatives. Carbohydr Res 2006; 341:433-42. [PMID: 16438945 DOI: 10.1016/j.carres.2005.12.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2005] [Revised: 12/23/2005] [Accepted: 12/24/2005] [Indexed: 10/25/2022]
Abstract
The 5,6-di-O-tosylated derivative of l-ascorbic acid was synthesized by selective protection and deprotection of 2,3- and 5,6-dihydroxy functional groups involving 5,6-ditosylation in the final step, while the novel 6-acetoxy, 6-hydroxy, and 6-chloro derivatives of 4,5-didehydro-l-ascorbic acid were obtained by reaction of ditosylated compound with nucleophilic reagents. The analysis of 3JH-4-H-5 homonuclear coupling constants shows that all l-ascorbic acid derivatives except for epoxy and 4,5-didehydro compounds exist in high population as gauche conformers across C-4-C-5 bonds, while 3JC-3-H-5 heteronuclear coupling constants in 4,5-didehydro derivatives indicate cis geometry along C-4-C-5 double bond. The X-ray crystal structure analysis of 2,3-di-O-benzyl-5,6-epoxy- and 5,6-isopropylidene-l-ascorbic acid shows that the oxygen atoms attached at positions 2 and 3 of the lactone ring are disposed in a synperiplanar fashion. Besides that, the dioxolane ring adopts half-chair conformation. The molecules of epoxy derivative are joined into infinite chains by one weak hydrogen bond of C-H...O type. Two O-H...O, and C-H...O hydrogen bonds link the molecules of 5,6-di-O-isopropylidene compound into two-dimensional network. 6-Chloro derivative of 2,3-di-O-benzyl-l-ascorbic acid showed the best cytostatic effects against all tested malignant tumor cells (IC50: approximately 18 microM).
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Affiliation(s)
- Tatjana Gazivoda
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
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20
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Opacić N, Zorc B, Cetina M, Mrvos-Sermek D, Raić-Malić S, Mintas M. Synthesis and X-ray crystal structure study of the hydroxyurea and hydantoin derivatives of l-valine. ACTA ACUST UNITED AC 2005; 66:85-93. [PMID: 16000122 DOI: 10.1111/j.1399-3011.2005.00276.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The novel hydroxyurea 5 derivative of L-valine was prepared by aminolysis of N-(1-benzotriazolecarbonyl)-L-valine cyclohexanemethylamide 4 with hydroxylamine. The corresponding hydantoin derivative 6 was synthesized by base catalyzed cyclization of the amide 4. The exact stereostructure of hydantoin derivative 6 has been determined by X-ray crystal structure analysis. The chiral atom of the hydantoin ring in 6 has S configuration what is in agreement with its configuration in the starting L-valine. The molecules of 6 are joined into infinite chains by N-H...O intermolecular hydrogen bond. The infinite chains are additionally linked by two C-H...O hydrogen bonds, thus forming two-dimensional network. The hydantoin derivative of L-valine 6 and its L-leucine analogue LH have similar packing arrangements, so they are homostructural.
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Affiliation(s)
- N Opacić
- Department of Medicinal Chemistry, Faculty of Pharmacy and Biochemistry, A. Kovacića 1, HR-10000 Zagreb, Croatia
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21
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Gazivoda T, Plevnik M, Plavec J, Kraljević S, Kralj M, Pavelić K, Balzarini J, De Clercq E, Mintas M, Raić-Malić S. The novel pyrimidine and purine derivatives of l-ascorbic acid: synthesis, one- and two-dimensional 1H and 13C NMR study, cytostatic and antiviral evaluation. Bioorg Med Chem 2005; 13:131-9. [PMID: 15582458 DOI: 10.1016/j.bmc.2004.09.052] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2004] [Accepted: 09/28/2004] [Indexed: 11/21/2022]
Abstract
The syntheses of the novel C-5 substituted pyrimidine derivatives of l-ascorbic acid containing free hydroxy groups at C-2' (6-10) or C-2' and C-3' (11-15) positions of the lactone ring are described. Debenzylation of the 6-chloro- and 6-(N-pyrrolyl)purine derivatives of 2,3-O,O-dibenzyl-l-ascorbic acid (16 and 17) gave the new compounds containing hydroxy groups at C-2' (18) and C-2' and C-3' (19 and 20). Z- and E-configuration of the C4'C5' double bond and position of the lactone ring of the compounds 6-9 were deduced from their one- and two-dimensional (1)H and (13)C NMR spectra and connectivities in NOESY and HMBC spectra. Compounds 15 and 18 showed the best inhibitory activities of all evaluated compounds in the series. The compound 15 containing 5-(trifluoromethyl)uracil showed marked inhibitory activity against all human malignant cell lines (IC(50): 5.6-12.8 microM) except on human T-lymphocytes. Besides, this compound influenced the cell cycle by increasing the cell population in G2/M phase and induced apoptosis in SW 620 and MiaPaCa-2 cells. The compound 18 containing 6-chloropurine ring expressed the most pronounced inhibitory activities against HeLa (IC(50): 6.8 microM) and MiaPaCa-2 cells (IC(50): 6.5 microM). The compound 20 with 6-(N-pyrrolyl)purine moiety showed the best differential inhibitory effect against MCF-7 cells (IC(50): 35.9 microM).
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Affiliation(s)
- Tatjana Gazivoda
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
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22
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Cetina M, Nagl A, Prekupec S, Raić-Malić S, Mintas M. Hydrogen-bonding and C-H...pi interactions in 7-hydroxy-3-methoxy-4-methyl-5,6,7,8-tetrahydropyrido[1,2-c]pyrimidin-1(9H)-one. Acta Crystallogr C 2005; 61:o158-60. [PMID: 15750243 DOI: 10.1107/s010827010500079x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2004] [Accepted: 01/10/2005] [Indexed: 11/10/2022] Open
Abstract
In the title compound, C10H14N2O3, a pyrimidine ring is fused with a piperidine ring. The pyrimidine ring is planar, whereas the piperidine ring adopts a half-chair conformation. The molecules of the title compound are connected via O-H...O intermolecular hydrogen bonds into infinite zigzag chains. The pyrimidine ring is involved in three C-H...pi interactions, which link the hydrogen-bonded chains into a three-dimensional framework.
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Affiliation(s)
- Mario Cetina
- Faculty of Textile Technology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia.
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23
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Barbarić M, Ursić S, Pilepić V, Zorc B, Hergold-Brundić A, Nagl A, Grdisa M, Pavelić K, Snoeck R, Andrei G, Balzarini J, De Clercq E, Mintas M. Synthesis, X-ray crystal structure study, and cytostatic and antiviral evaluation of the novel cycloalkyl-N-aryl-hydroxamic acids. J Med Chem 2005; 48:884-7. [PMID: 15689173 DOI: 10.1021/jm040878r] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In vitro evaluation of the novel cycloalkyl-N-(4-chlorophenyl)-hydroxamic acids (2a-g) demonstrated that 2b,d,e exhibited rather marked inhibitory activity (IC50 = 7-10 microM) against pancreatic carcinoma, 2b-d against colon carcinoma, 2d against laryngeal carcinoma, and 2b,d against breast carcinoma. 2e showed the most pronounced anti-cytomegalovirus activity (EC50 = 1.5 and 0.8 microg mL(-1)) only at > or = 5-fold lower than the cytotoxic concentration. 2d and 2f showed modest, albeit selective, activity against cytomegalovirus (2d, EC50 = 7.3-8.9 microg mL(-1), selectivity index 7-10; 2f, EC50 = 7-13 microg mL(-1), selectivity index 10).
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Affiliation(s)
- Monika Barbarić
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia.
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Raic-Malic S, Prekupec S, Kalokira B, Grdisa M, Pavelic K, De Clercq E, Mintas M. Synthesis and Comparative Cytostatic Activity of the New N-7 Acyclic Purine Nucleoside Analogues with Natural N-9 Regioisomers. HETEROCYCLES 2005. [DOI: 10.3987/com-04-10320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Opacić N, Barbarić M, Zorc B, Cetina M, Nagl A, Frković D, Kralj M, Pavelić K, Balzarini J, Andrei G, Snoeck R, De Clercq E, Raić-Malić S, Mintas M. The Novel l- and d-Amino Acid Derivatives of Hydroxyurea and Hydantoins: Synthesis, X-ray Crystal Structure Study, and Cytostatic and Antiviral Activity Evaluations. J Med Chem 2004; 48:475-82. [PMID: 15658861 DOI: 10.1021/jm040869i] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The novel L- and D-amino acid derivatives of hydroxyurea 5a-o were prepared by aminolysis of N-(1-benzotriazolecarbonyl)amino acid amides 4a-o with hydroxylamine. The hydantoin derivatives 6a-e,m,p were synthesized by base-catalyzed cyclization of amides 4, common precursors for 5 and 6. X-ray crystal structure analysis shows that the C5 atom in 6e possesses the S configuration, which is consistent with the configuration of the starting reagent, l-leucine. Among L-amino acid derivatives of hydroxyurea, 5h and 5i inhibited specifically murine leukemia and human T-lymphocytes (IC(50) = 10-19 microM) and showed selectivity with respect to normal human fibroblasts (WI 38). d-Amino acid derivatives of hydroxyurea 5m and 5o inhibited the growth of all tumor cell lines (IC(50) = 4.8-83.9 microM), but not the growth of normal fibroblasts (WI 38; IC(50) > 100 microM). Results on antiviral evaluations showed that N-(1-benzotriazolecarbonyl)amino acid amide 4m and hydantoin 6m had marked activity against the Davis strain of CMV (4m, EC(50) = 3.2 microg/mL; 6m, EC(50) = 4.0 microg/mL). However, these compounds showed also rather expressed cytotoxicity (4m, CC(50) = 43.4 microg/mL; 6m, CC(50) = 12.5 microg/mL(-1)).
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Affiliation(s)
- Ninoslav Opacić
- Department of Medicinal Chemistry, Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovacića. 1, HR-10 000 Zagreb, Croatia
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Cetina M, Dzolić Z, Mrvos-Sermek D, Hergold-Brundić A, Nagl A, Mintas M. Synthesis and X-ray study of the 6-(N-pyrrolyl)purine and thymine derivatives of 1-aminocyclopropane-1-carboxylic acid. ACTA ACUST UNITED AC 2004; 63:391-8. [PMID: 15140156 DOI: 10.1111/j.1399-3011.2004.00133.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The novel purine and pyrimidine derivatives of 1-aminocyclopropane-1-carboxylic acid 1 and 2 were obtained by alkylation of 6-(N-pyrrolyl)purine and thymine with methyl 1-benzamido-2-chloromethylcyclopropanecarboxylate. X-ray crystal structure analysis shows that the cyclopropane rings in 1 and 2 posses Z-configuration. The cyclopropane ring atoms and attached atoms of the benzamido and methoxycarbonyl moiety of both molecules are disposed perpendicularly to each other. The carbonyl oxygen of the methoxycarbonyl moiety adopts in both compounds a synperiplanar conformation with respect to the midpoint of the distal bond of the cyclopropane ring. The torsion angles Phi and psi for the 1-aminocyclopropane-1-carboxylic acid residue in 1 and 2 correspond to a folded conformation, while the torsion angles omega define antiperiplanar conformation. Intermolecular hydrogen bonds connect the molecules of 1 into dimers. Each dimer is hydrogen-bonded with four ethanol molecules, thus forming discrete unit. On the contrary, intermolecular hydrogen bonds link the molecules of 2 generating three-dimensional network.
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Affiliation(s)
- M Cetina
- Faculty of Textile Technology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia
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27
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Raić-Malić S, Tomasković L, Mrvos-Sermek D, Prugovecki B, Cetina M, Grdisa M, Pavelić K, Mannschreck A, Balzarini J, De Clercq E, Mintas M. Spirobipyridopyrans, spirobinaphthopyrans, indolinospiropyridopyrans, indolinospironaphthopyrans and indolinospironaphtho-1,4-oxazines: synthesis, study of X-ray crystal structure, antitumoral and antiviral evaluation. Bioorg Med Chem 2004; 12:1037-45. [PMID: 14980617 DOI: 10.1016/j.bmc.2003.12.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2003] [Accepted: 12/09/2003] [Indexed: 11/20/2022]
Abstract
The novel racemic indolinospirobenzopyrans (5-7), indolinospironaphthopyrans (11-14) and indolinospironaphtho-1,4-oxazine (17) were synthesized by an aldol type of condensation of 1',3',3'-trimethyl-2 '-methyleneindoline and its 5-substituted derivatives with an appropriately substituted hydroxybenzaldehyde, hydroxynaphthaldehyde or nitrosonaphthol. An unequivocal proof of the stereostructures of 9 and 17 was obtained by the single-crystal X-ray diffraction method. A substituted indoline ring and the benzopyran ring in 9 and the naphtho-1,4-oxazine moiety in 17 are interconnected via the common chiral atom and positioned almost perpendicularly to each other. The five-membered 2,3-dihydropyrrolo moiety of the indoline ring adopts an envelope conformation in both structures. Of all the compounds of this series, spirobipyridopyran (1) inhibited specifically the growth of human melanoma (HBL) (IC(50): 0.9 microM) cells but not the growth of normal fibroblasts (WI38). Indolinospirobenzopyrans (8-10) showed significant cytostatic activities against all tumor cell lines. However, these compounds also exhibited a cytotoxic effect on normal human fibroblasts. The indolinospirobenzopyrans 4, 6-8, 10 and the indolinospironaphtho-1,4-oxazine 16 showed, albeit modest, selectivity as antiviral agents against varicella-zoster virus (VZV) and/or cytomegalovirus (CMV) (EC(50) within the concentration range of 1.0-12.6 microM).
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Affiliation(s)
- Silvana Raić-Malić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, PO Box 177, HR-10000 Zagreb, Croatia
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Raic-Malic S, Batinac S, Mrvos Sermek D, Cetina M, Pavelic K, Mintas M. Synthesis of the Novel Bicyclic Oxepinopyrimidine and Fluorinated Pyrrolidinopyrimidines. HETEROCYCLES 2004. [DOI: 10.3987/com-04-10176] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Mannschreck A, Mintas M, Becher G, Stühler G. Liquid Chromatography of Enantiomers: Determination of Enantiomeric Purity in Spite of Extensive Peak Overlap. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/anie.198004691] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Prekupec S, Svedruzić D, Gazivoda T, Mrvos-Sermek D, Nagl A, Grdisa M, Pavelić K, Balzarini J, De Clercq E, Folkers G, Scapozza L, Mintas M, Raić-Malić S. Synthesis and Biological Evaluation of Iodinated and Fluorinated 9-(2-Hydroxypropyl) and 9-(2-Hydroxyethoxy)methyl Purine Nucleoside Analogues. J Med Chem 2003; 46:5763-72. [PMID: 14667229 DOI: 10.1021/jm0308747] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The novel fluorinated and iodinated purine derivatives containing 9-(2-hydroxypropyl) (1a-7a and 9a-13a) and 9-(2-hydroxyethoxymethyl) (1b-3b, 5b, and 7b-12c) side chains were synthesized by a multistep synthetic route involving Baltz-Schiemann's fluorination and diazotation/iodination as key reactions. An unequivocal proof for the stereostructure of 5b was obtained by X-ray structure analysis. New compounds were evaluated for their cytostatic activity against murine leukemia (L1210); mammary carcinoma (FM3A); and human T-lymphocytes (Molt4/C8 and CEM), melanoma (HBL), cervical carcinoma (HeLa), colon carcinoma (HT29 and SW620), laryngeal carcinoma (Hep2), and pancreatic carcinoma (MiaPaCa2) as well as diploid fibroblasts (WI38). Of all the compounds, the 2-aminopurin-6-thione derivative 9a showed the most pronounced inhibitory activity against human SW620 cells. The 2-aminopurin-6-thione derivative 9b exhibited the most selective inhibitory activity against human HeLa, Hep2, SW620, and murine L1210 cell proliferation as compared to normal fibroblast (WI38) cell proliferation. None of the compounds showed inhibitory activities against HIV-1, HIV-2, HSV-1, and HSV-2, vaccinia, vesicular stomatitis, parainfluenza-3, reovirus-1, Sindbis, Coxsackie B4, or respiratory syncytial virus. The new purine derivatives, and particularly 9a and 9b, appear to demonstrate sufficient cytostatic potency and selectivity to justify further evaluation of their potential.
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Affiliation(s)
- Svjetlana Prekupec
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, Croatia
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Džolić Z, Cetina M, Kovaček D, Hergold-Brundić A, Mrvoš-Sermek D, Nagl A, Slade N, Pavelić K, Balzarini J, Clercq ED, Zerbe O, Folkers G, Scapozza L, Mintas M. Molecular structures and ab initio molecular orbital calculations of the optically active derivatives of 1-aminocyclopropane-1-carboxylic acid. J Mol Struct 2003. [DOI: 10.1016/s0022-2860(03)00255-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Dzolić Z, Kristafor V, Cetina M, Nagl A, Hergold-Brundić A, Mrvos-Sermek D, Burgemeister T, Grdisa M, Slade N, Pavelić K, Balzarini J, De Clercq E, Mintas M. Synthesis, structural studies, and biological evaluation of some purine substituted 1-aminocyclopropane-1-carboxylic acids and 1-amino-1-hydroxymethylcyclopropanes. Nucleosides Nucleotides Nucleic Acids 2003; 22:373-89. [PMID: 12885120 DOI: 10.1081/ncn-120022029] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The novel purine derivatives of 1-aminocyclopropane-1-carboxylic acid (8 and 9) and 1-amino-1-hydroxymethylcyclopropane (12 and 13) with methylene spacer between the base and the cyclopropane ring were prepared by multistep synthetic route involving alkylation of adenine and 6-(N-pyrrolyl)purine with 2-hydroxy-methyl-1-aminocyclopropane-1-carboxylic acid derivative 3 as a key reaction. All novel compounds were racemic. The N-9 substitution of the purine ring and the Z-configuration of the cyclopropane ring in 4-13 were deduced from their 1H and 13C NMR spectra by analyses of chemical shifts, H-H coupling constants and connectivities in two-dimensional homo- and heteronuclear correlation spectra. An unequivocal proof of the stereostructure of 1, 4 and 5 was obtained by their X-ray structure analysis. The novel compounds were evaluated on cytostatic and antiviral activities in several cell lines. The 6-(N-pyrrolyl)purine derivative of 1,2-aminocyclopropane alcohol 12 exhibited a more pronounced inhibitory activity against the proliferation of cervical carcinoma (HeLa) and human fibroblast (WI-38) cells than other types of tumor cell lines. None of the compounds showed inhibitory activities against cytomegalovirus, varicella-zoster virus or other viruses.
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Affiliation(s)
- Zoran Dzolić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
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Pospisil P, Pilger B, Marveggio S, Schelling P, Wurth C, Scapozza L, Folkers G, Pongracic M, Mintas M, Malic S. Synthesis, Kinetics, and Molecular Docking of Novel 9-(2-Hydroxypropyl)purine Nucleoside Analogs as Ligands of Herpesviral Thymidine Kinases. Helv Chim Acta 2002. [DOI: 10.1002/1522-2675(200210)85:10<3237::aid-hlca3237>3.0.co;2-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Guesten H, Mintas M, Klasinc L. Deactivation of the fluorescent state of 9-tert-butylanthracene. 9-tert-Butyl-9,10(Dewar anthracene). J Am Chem Soc 2002. [DOI: 10.1021/ja00547a022] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mrvoš-Sermek D, Cetina M, Krištafor V, Džoli Z, Mintas M. Crystal structure of 9-methyl-(6-N-pyrrolyl)purine, C10H9N5. Z KRIST-NEW CRYST ST 2002. [DOI: 10.1524/ncrs.2002.217.2.273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Loncar-Tomaskovic L, Pustet N, Mrvos-Sermek D, Nagl A, Mintas M, Mannschreck A. Spirobipyridopyrans and indolinospiropyridopyrans: Synthesis, X-ray crystal structure, separation of enantiomers, and barriers to thermal cleavage of the C(sp(3))-O bond. Chirality 2001; 13:81-8. [PMID: 11170250 DOI: 10.1002/1520-636x(2001)13:2<81::aid-chir1002>3.0.co;2-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The novel chiral spirobipyridopyrans 1 and 2 were synthesized by the acid catalyzed aldol type condensation of 5-deoxypyridoxal with the appropriate ketone and subsequent reaction of the resulting pyrylium salt with base. The indolinospiropyridopyrans 3-5, which contain the modified B(6) unit, were prepared by aldol reaction of 5-deoxypyridoxal with 1,3,3-trimethyl-2-methylenindolines. Analytical separation of enantiomers was accomplished by low-pressure liquid chromatography (LPLC) on triacetylcellulose. The barriers to thermal racemization were determined by on-line measurements of the enriched enantiomers after LPLC. Gibbs energies of activation DeltaG superset, not equals for reversible cleavage of the C(spiro)-O bond in 1, 3, and 4 were in the range 103-108 kJ/mol. The lower limits of the barriers in 2 and 5 were estimated to be greater than 102 and 109 kJ/mol by attempted thermal racemizations. The increase of the barriers from 3 to 4 and 5 was explained by the influence of electron withdrawing groups, which reduce the stability of the ring-opened transition states to C(sp3)-O bond cleavage. Geometrical data from X-ray structure analysis showed that the angle [C3-C2-C3'] around the spiro carbon atom increases with elongation of the chain in the C3-C3' bridge. This angle widening is explained by a ring-strain effect, which is greater in the five-membered ring in the skeleton of 7 than in the six- and seven-membered rings of 1 and 2.
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Affiliation(s)
- L Loncar-Tomaskovic
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia
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Cetina M, Hergold-Brundic A, Mrvos-Sermek D, Dzolic Z, Mintas M. Crystal structure of ethyl(15,2R)-1-benzamido-2-[(5)-2,2-dimethyl-1,3- dioxolan-4-yl]cyclopropanecarboxylate, C18H23NO5. Z KRIST-NEW CRYST ST 2001. [DOI: 10.1524/ncrs.2001.216.14.629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Raić-Malić S, Svedruzić D, Gazivoda T, Marunović A, Hergold-Brundić A, Nagl A, Balzarini J, De Clercq E, Mintas M. Synthesis and antitumor activities of novel pyrimidine derivatives of 2,3-O,O-dibenzyl-6-deoxy-L-ascorbic acid and 4,5-didehydro-5,6- dideoxy-L-ascorbic acid. J Med Chem 2000; 43:4806-11. [PMID: 11123990 DOI: 10.1021/jm0009540] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The new pyrimidine derivatives of 2,3-O, O-dibenzyl-6-deoxy-L-ascorbic acid (8-10) were synthesized by condensation of uracil and its 5-fluoro- and 5-trifluoromethyl-substituted derivatives with 4-(5,6-epoxypropyl)-2, 3-O,O-dibenzyl-L-ascorbic acid (7), while pyrimidine derivatives of 4,5-didehydro-5,6-dideoxy-L-ascorbic acid (14-17) with free C-2' and C-3' hydroxy groups in the lactone ring were obtained by debenzylation of 11-13 with boron trichloride. Z-Configuration of the C4'=C5' double bond and position of the benzyl group in the lactone ring of 14 were deduced from their (1)H and (13)C NMR spectra and connectivities in COSY, ROESY, and HMBC spectra. The exact stereostructure of 13 was confirmed by its X-ray crystal structure analysis. Of all the compounds in the series, compound 16 containing a 5-fluoro-substituted uracil ring showed the most significant antitumor activities against murine leukemia L1210/0 (IC(50) = 1.4 microg/mL), murine mammary carcinoma FM3A/0 (IC(50) = 0.78 microg/mL), and, to a lesser extent, human T-lymphocyte cells Molt4/C8 (IC(50) = 31.8 microg/mL) and CEM/0 cell lines (IC(50) = 20.9 microg/mL).
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Affiliation(s)
- S Raić-Malić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, Laboratory of General and Inorganic Chemistry, University of Zagreb, Croatia.
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Lončar-Tomašcović L, Šarac-Arneri R, Hergold-Brundić A, Nagl A, Mintas M, Sandström J. Chromatographic Resolution, Circular Dichroism Spectra, Absolute Configurations, and Crystal Structures of Bridged Biphenyls, Containing Sulfide, Sulfoxide, and Sulfone Groups in the Bridge. Helv Chim Acta 2000. [DOI: 10.1002/(sici)1522-2675(20000216)83:2<479::aid-hlca479>3.0.co;2-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Raić-Malić S, Hergold-Brundić A, Nagl A, Grdisa M, Pavelić K, De Clercq E, Mintas M. Novel pyrimidine and purine derivatives of L-ascorbic acid: synthesis and biological evaluation. J Med Chem 1999; 42:2673-8. [PMID: 10411487 DOI: 10.1021/jm991017z] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The novel pyrimidine derivatives 1-6 of 2,3-dibenzyl-4,5-didehydro-5, 6-dideoxy-L-ascorbic acid were synthesized by the condensation of pyrimidine bases with 5,6-diacetyl-2,3-dibenzyl-L-ascorbic acid (DDA). Both N-9 (7) and N-7 (8) regioisomers were obtained in the reaction of 6-chloropurine with 5-acetyl-6-bromo-2, 3-dibenzyl-L-ascorbic acid (ABDA), while the reaction of 6-(N-pyrrolyl)purine with ABDA afforded exclusively the N-9 isomer 9. Structures of all newly prepared compounds were deduced from the chemical shifts in (1)H and (13)C NMR spectra, as well as connectivities in 2D homo- and heteronuclear correlation spectra. An unambiguous proof of the structure and conformation of 7 was obtained by X-ray crystallographic analysis. Compounds 1-9 were found to exert cytostatic activities against malignant cell lines: pancreatic carcinoma (MiaPaCa2), breast carcinoma (MCF7), cervical carcinoma (HeLa), laryngeal carcinoma (Hep2), murine leukemia (L1210/0), murine mammary carcinoma (FM3A), and human T-lymphocytes (Molt4/C8 and CEM/0), as well as antiviral activities against varicella-zoster virus (TK(+)VZV and TK(-)VZV) and cytomegalovirus (CMV). The compound 6 containing a trifluoromethyl-substituted uracil ring exhibited marked antitumor activity. The N-7-substituted purine regioisomer 8 had greater inhibitory effects on the murine L1210/0 and human CEM/0 cell lines than the N-9 isomer 7. Compound 9 with the 6-purine-substituted pyrrolo moiety had a more pronounced selective cytostatic activity against human (Molt4/C8 and CEM/0) cell lines than murine (L1210/0 and FM3A/0) and human (MiaPaCa2, MCF7, HeLa, and Hep2) tumor cell lines and normal fibroblasts (Hef522). The compound 6 exhibited the most potent antiviral activities against TK(+)VZV, TK(-)VZV, and CMV, albeit at concentrations that were only slightly lower than the cytotoxic concentrations.
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Affiliation(s)
- S Raić-Malić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, Marulicev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia
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Lon?ar-Toma?kovi? L, Lorenz K, Hergold-Brundi? A, Mrvo?-Sermek D, Nagl A, Mintas M, Mannschreck A. Spirobinaphthopyrans: Synthesis, x-ray crystal structure, separation of enantiomers, and barriers to thermal racemization. Chirality 1999. [DOI: 10.1002/(sici)1520-636x(1999)11:5/6<363::aid-chir3>3.0.co;2-f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mrvoš-Sermek D, Lončar-Tomašković L, Hergold-Brundić A, Mintas M, Nagl A. (±)-6,7-Dihydro-1,6,11-trimethyl-5 H-dibenz[ c, e]azepine. Acta Crystallogr C 1998. [DOI: 10.1107/s0108270198000936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kovač B, Klasinc L, Vorkapić-Furač J, Mintas M, Knop JV. Photoelectron spectroscopic study of N-aryl- and N-heteroaryl-pyrroles. ACTA ACUST UNITED AC 1997. [DOI: 10.1039/a705455f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Raić S, Pongraćić M, Vorkapić-Furać J, Vikić-Topić D, Hergold-Brundić A, Nagl A, Mintas M. The Novel 6–(N-Pyrrolyl)purine Acyclic Nucleosides:1H and13C NMR and X-ray Structural Study†. ACTA ACUST UNITED AC 1996. [DOI: 10.1080/07328319608002139] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Otočan K, Mintas M, Kastner F, Mannschreck A, Golen JA, Williard PG. Regiospecific synthesis and structural study of some trifluoromethyl substituted dibenzosemibullvalenes. Monatsh Chem 1992. [DOI: 10.1007/bf00808282] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vorkapić-Furač J, Mintas M, Kastner F, Mannschreck A. Enantiomers and barriers to racemization of sterically hinderedN-aryl- andN-heteroarylpyrroles. J Heterocycl Chem 1992. [DOI: 10.1002/jhet.5570290209] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Vorkapić-Furač J, Mintas M, Burgemeister T, Mannschreck A. Sterically hindered N-aryl pyrroles: chromatographic separation of enantiomers and barriers to racemization. ACTA ACUST UNITED AC 1989. [DOI: 10.1039/p29890000713] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gusten H, Mintas M, Klasinc L. Additions and Corrections - Deactivation of the Fluorescent State of 9-tert-Butylanthracene. 9-tert-Butyl-9,10-(Dewar anthracene). J Am Chem Soc 1981. [DOI: 10.1021/ja00408a605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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