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Guo Y, Xu T, Bao C, Liu Z, Fan J, Yang R, Qin S. Design and synthesis of new norfloxacin-1,3,4-oxadiazole hybrids as antibacterial agents against methicillin-resistant Staphylococcus aureus (MRSA). Eur J Pharm Sci 2019; 136:104966. [PMID: 31233865 DOI: 10.1016/j.ejps.2019.104966] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 05/27/2019] [Accepted: 06/20/2019] [Indexed: 01/09/2023]
Abstract
Toward the search of new antibacterial agents to control methicillin-resistant Staphylococcus aureus (MRSA), a class of new norfloxacin-1,3,4-oxadiazole hybrids were designed and synthesized. Antibacterial activities against drug-sensitive bacteria S. aureus and clinical drug resistant isolates of MRSA were evaluated. Compound 5k exhibited excellent antibacterial activities against S. aureus (MIC: 2 μg/mL) and MRSA1-3 (MIC: 0.25-1 μg/mL). The time-kill kinetics demonstrated that compound 5k had an advantage over commonly used antibiotics vancomycin in killing S. aureus and MRSA. Moreover, compound 5k could inhibit the bacteria and destroy their membranes in a short time, and showed very low cytotoxicity to NRK-52E cells. Some interesting structure-activity relationships (SARs) were also discussed. These results indicated that these norfloxacin-1,3,4-oxadiazole hybrids could be further developed into new antibacterial agents against MRSA.
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Affiliation(s)
- Yong Guo
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue Avenue, Zhengzhou 450001, Henan Province, PR China.
| | - Ting Xu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue Avenue, Zhengzhou 450001, Henan Province, PR China
| | - Chongnan Bao
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue Avenue, Zhengzhou 450001, Henan Province, PR China
| | - Zhiyan Liu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue Avenue, Zhengzhou 450001, Henan Province, PR China
| | - Jiangping Fan
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue Avenue, Zhengzhou 450001, Henan Province, PR China
| | - Ruige Yang
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue Avenue, Zhengzhou 450001, Henan Province, PR China.
| | - Shangshang Qin
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, KeXue Avenue, Zhengzhou 450001, Henan Province, PR China.
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Rageh AH, Atia NN, Abdel-Rahman HM. Application of salting-out thin layer chromatography in computational prediction of minimum inhibitory concentration and blood-brain barrier penetration of some selected fluoroquinolones. J Pharm Biomed Anal 2018; 159:363-373. [PMID: 30056224 DOI: 10.1016/j.jpba.2018.07.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/07/2018] [Accepted: 07/09/2018] [Indexed: 01/21/2023]
Abstract
The 2017 FDA safety review regarding the CNS (central nervous system) side effects associated with the systemic use of fluoroquinolones antibacterials (FQs) was the key motivation to carry out this work. The main objective of this study is to investigate lipophilicity and retention parameters of some selected fluoroquinolones antibacterials (FQs) namely; levofloxacin (LEV), ofloxacin (OFL), gatifloxacin (GAT), norfloxacin (NOR), sparfloxacin (SPA), ciprofloxacin (CIP) and lomefloxacin (LOM) using salting-out thin layer chromatography (SOTLC). Statistically significant correlations between the chromatographically-obtained retention parameters and experimental log P values were found and expressed as quantitative structure retention relationship (QSRR) equations. Principal component analysis was carried out to explain the variation between chromatographic and both experimental and computed lipophilicity parameters. In another aspect of this study, a comparison between the chromatographically-determined retention parameters (for five of the drugs under study) obtained using SOTLC (current study) and relative lipophilicity (RM0) determined using a previously reported RP (reversed-phase)-TLC method was carried out. Statistically significant correlation between the two methods was found, although RM0 values obtained using SOTLC was lower than those reported using RP-TLC. Multiple linear regression analysis was performed to predict MIC (minimum inhibitory concentration) and blood brain barrier (BBB) penetration of the examined drugs in which efficient QSAR (quantitative structure-activity relationship) and QSPR (quantitative structure-property relationship) models were generated using the calculated chromatographic parameters (RM0 and C0). The described models can provide a useful approach to predict MIC and BBB penetration of newly synthesized FQs targeting to increase their activity against Gram-positive organisms and to minimize the associated CNS side effects.
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Affiliation(s)
- Azza H Rageh
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt.
| | - Noha N Atia
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Hamdy M Abdel-Rahman
- Department of Medicinal Chemistry, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Nahda University, 62511, Beni Suef, Egypt
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Fang X, Wang CJ. Catalytic asymmetric construction of spiropyrrolidines via 1,3-dipolar cycloaddition of azomethine ylides. Org Biomol Chem 2018; 16:2591-2601. [DOI: 10.1039/c7ob02686b] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this review, recent progress on the catalytic enantioselective synthesis of chiral spiropyrrolidine derivatives via 1,3-dipolar cycloaddition of azomethine ylides has been discussed.
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Affiliation(s)
- Xin Fang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
- Department of Chemistry
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
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Kajetanowicz A, Milewski M, Rogińska J, Gajda R, Woźniak K. Hoveyda-Type Quinone-Containing Complexes - Catalysts to Prevent Migration of the Double Bond under Metathesis Conditions. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601344] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Anna Kajetanowicz
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Mariusz Milewski
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Joanna Rogińska
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Roman Gajda
- Department of Chemistry; Warsaw University; Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Krzysztof Woźniak
- Department of Chemistry; Warsaw University; Żwirki i Wigury Street 101 02-089 Warsaw Poland
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Jana A, Grela K. Mild Functionalization of Tetraoxane Derivatives via Olefin Metathesis: Compatibility of Ruthenium Alkylidene Catalysts with Peroxides. Org Lett 2017; 19:520-523. [PMID: 28094973 DOI: 10.1021/acs.orglett.6b03688] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Anupam Jana
- Faculty of Chemistry, Biological
and Chemical Research Centre, University of Warsaw, Żwirki
i Wigury 101, 02-089 Warsaw, Poland
| | - Karol Grela
- Faculty of Chemistry, Biological
and Chemical Research Centre, University of Warsaw, Żwirki
i Wigury 101, 02-089 Warsaw, Poland
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Kant R, Singh V, Nath G, Awasthi SK, Agarwal A. Design, synthesis and biological evaluation of ciprofloxacin tethered bis-1,2,3-triazole conjugates as potent antibacterial agents. Eur J Med Chem 2016; 124:218-228. [DOI: 10.1016/j.ejmech.2016.08.031] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 07/24/2016] [Accepted: 08/14/2016] [Indexed: 01/09/2023]
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Wu Z, Zhang X, Ma Z, Wu B. Establishment of pharmacophore and VolSurf models to predict the substrates of UDP-glucuronosyltransferase1A3. Xenobiotica 2015; 45:653-62. [DOI: 10.3109/00498254.2015.1016136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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8
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Catalytic asymmetric construction of spiro pyrrolidines with contiguous quaternary centers via 1,3-dipolar cycloaddition of azomethine ylides. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60204-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Recent developments in the synthesis and reactivity of methylene- and alkylidenecyclopropane derivatives. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.057] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Srivastava N, Kumar A. Synthesis and study of 1-ethyl-3-carbohydrazide and 3-[1-oxo-2-hydrazino-3-{p-toluenesulfon}]quinolone derivatives against bacterial infections. Eur J Med Chem 2013; 67:464-8. [DOI: 10.1016/j.ejmech.2013.06.056] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 06/20/2013] [Accepted: 06/24/2013] [Indexed: 11/16/2022]
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12
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Nocquet PA, Hazelard D, Compain P. Synthesis of spirocyclopropyl γ-lactams by tandem intramolecular azetidine ring-opening/closing cascade reaction: synthetic and mechanistic aspects. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.111] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Ako R, Dong D, Wu B. 3D-QSAR studies on UDP-glucuronosyltransferase 2B7 substrates using the pharmacophore and VolSurf approaches. Xenobiotica 2012; 42:891-900. [DOI: 10.3109/00498254.2012.675094] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Roland Ako
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77030, USA
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Scotti L, Tullius Scotti M, de Oliveira Lima E, Sobral da Silva M, do Carmo Alves de Lima M, da Rocha Pitta I, Olímpio de Moura R, Gonzaga Batista de Oliveira J, Duarte da Cruz RM, Bezerra Mendonça FJ. Experimental methodologies and evaluations of computer-aided drug design methodologies applied to a series of 2-aminothiophene derivatives with antifungal activities. Molecules 2012; 17:2298-315. [PMID: 22367025 PMCID: PMC6269054 DOI: 10.3390/molecules17032298] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 02/03/2012] [Accepted: 02/21/2012] [Indexed: 11/16/2022] Open
Abstract
Fifty 2-[(arylidene)amino]-4,5-cycloalkyl[b]thiophene-3-carbonitrile derivatives were screened for their in vitro antifungal activities against Candida krusei and Cryptococcus neoformans. Based on experimentally determined minimum inhibitory concentration (MIC) values, we conducted computer-aided drug design studies [molecular modelling, chemometric tools (CPCA, PCA, PLS) and QSAR-3D] that enable the prediction of three-dimensional structural characteristics that influence the antifungal activities of these derivatives. These predictions provide direction with regard to the syntheses of new derivatives with improved biological activities, which can be used as therapeutic alternatives for the treatment of fungal infections.
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Affiliation(s)
- Luciana Scotti
- Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa 50670-910, PB, Brazil; (M.S.S.)
- Authors to whom correspondence should be addressed: (L.S.); (F.J.B.M.J.); Tel.: +55-83-3191-1528 (L.S.); Tel.: +55-83-9924-1423 (F.J.B.M.J.); Fax: +55-83-3223-1128
| | - Marcus Tullius Scotti
- Departamento de Engenharia e Meio Ambiente, Universidade Federal da Paraíba, Campus IV, Rio Tinto 58297-000, PB, Brazil;
| | - Edeltrudes de Oliveira Lima
- Laboratório Micologia, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa 50670-910, PB, Brazil;
| | - Marcelo Sobral da Silva
- Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa 50670-910, PB, Brazil; (M.S.S.)
| | - Maria do Carmo Alves de Lima
- Laboratório de Planejamento e Síntese de Fármacos, Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife 50670-910, PE, Brazil; (M.C.A.L.); (I.R.P.)
| | - Ivan da Rocha Pitta
- Laboratório de Planejamento e Síntese de Fármacos, Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife 50670-910, PE, Brazil; (M.C.A.L.); (I.R.P.)
| | - Ricardo Olímpio de Moura
- Laboratório de Síntese e Vetorização de Moléculas, Departamento de Ciências Biológicas, Universidade Estadual da Paraíba, Rua Horácio Trajano de Oliveira s/n, Cristo Redentor, João Pessoa 58070-450, PB, Brazil; (R.O.M.); (J.G.B.O.); (R.M.D.C.)
| | - Jaismary Gonzaga Batista de Oliveira
- Laboratório de Síntese e Vetorização de Moléculas, Departamento de Ciências Biológicas, Universidade Estadual da Paraíba, Rua Horácio Trajano de Oliveira s/n, Cristo Redentor, João Pessoa 58070-450, PB, Brazil; (R.O.M.); (J.G.B.O.); (R.M.D.C.)
| | - Rayssa Marques Duarte da Cruz
- Laboratório de Síntese e Vetorização de Moléculas, Departamento de Ciências Biológicas, Universidade Estadual da Paraíba, Rua Horácio Trajano de Oliveira s/n, Cristo Redentor, João Pessoa 58070-450, PB, Brazil; (R.O.M.); (J.G.B.O.); (R.M.D.C.)
| | - Francisco Jaime Bezerra Mendonça
- Laboratório de Síntese e Vetorização de Moléculas, Departamento de Ciências Biológicas, Universidade Estadual da Paraíba, Rua Horácio Trajano de Oliveira s/n, Cristo Redentor, João Pessoa 58070-450, PB, Brazil; (R.O.M.); (J.G.B.O.); (R.M.D.C.)
- Authors to whom correspondence should be addressed: (L.S.); (F.J.B.M.J.); Tel.: +55-83-3191-1528 (L.S.); Tel.: +55-83-9924-1423 (F.J.B.M.J.); Fax: +55-83-3223-1128
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Al-Hiari YM, Qandil AM, Al-Zoubi RM, Alzweiri MH, Darwish RM, Shattat GF, Al-Qirim TM. Synthesis and antibacterial activity of novel 7-haloanilino-8-nitrofluoroquinolone derivatives. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9692-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Liu TL, He ZL, Tao HY, Cai YP, Wang CJ. Stereoselective construction of a 5-aza-spiro[2,4]heptane motif via catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides and ethyl cyclopropylidene acetate. Chem Commun (Camb) 2011; 47:2616-8. [DOI: 10.1039/c0cc04329j] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chemometric studies on natural products as potential inhibitors of the NADH oxidase from Trypanosoma cruzi using the VolSurf approach. Molecules 2010; 15:7363-77. [PMID: 20966878 PMCID: PMC6259467 DOI: 10.3390/molecules15107363] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 10/05/2010] [Accepted: 10/11/2010] [Indexed: 11/16/2022] Open
Abstract
Natural products have widespread biological activities, including inhibition of mitochondrial enzyme systems. Some of these activities, for example cytotoxicity, may be the result of alteration of cellular bioenergetics. Based on previous computer-aided drug design (CADD) studies and considering reported data on structure-activity relationships (SAR), an assumption regarding the mechanism of action of natural products against parasitic infections involves the NADH-oxidase inhibition. In this study, chemometric tools, such as: Principal Component Analysis (PCA), Consensus PCA (CPCA), and partial least squares regression (PLS), were applied to a set of forty natural compounds, acting as NADH-oxidase inhibitors. The calculations were performed using the VolSurf+ program. The formalisms employed generated good exploratory and predictive results. The independent variables or descriptors having a hydrophobic profile were strongly correlated to the biological data.
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Schmitt CA, Heiss EH, Schachner D, Aristei Y, Severin T, Dirsch VM. A Maillard reaction product enhances eNOS activity in human endothelial cells. Mol Nutr Food Res 2010; 54:1031-8. [PMID: 20112298 DOI: 10.1002/mnfr.200900330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Nitric oxide (NO) produced by the endothelial nitric oxide synthase (eNOS) is an important signaling molecule in the cardiovascular system. Although dietary factors can modulate eNOS activity, putative effects of processed food are barely investigated. We aimed to examine whether the model Maillard reaction product 3-hydroxy-2-methyl-1-propyl-4(1H)-pyridone (HMPP), formed from maltol or starch and propylamine, affects the eNOS system. Incubation of EA.hy926 endothelial cells with 30-300 microM HMPP for 18 h enhanced endothelial NO release measured with the fluorescent probe diaminofluorescein-2 and eNOS activity determined by the [14C]L-arginine-[14C]L-citrulline conversion assay. HMPP increased NO production also in two different types of primary human endothelial cells. Protein levels of eNOS and inducible NO synthase remained unaltered by HMPP. HMPP inhibited eNOS activity within the first 2-4 h, whereas it potently increased eNOS activity after 12-24 h. Levels of eNOS phosphorylation, expression of heat-shock protein 90, caveolin-1 and various antioxidant enzymes were not affected. Intracellular reactive oxygen species remained unchanged by HMPP. This is the first study to demonstrate positive effects of a Maillard reaction product on eNOS activity and endothelial NO production, which is considered favourable for cardiovascular protection.
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Bajot F. The Use of Qsar and Computational Methods in Drug Design. CHALLENGES AND ADVANCES IN COMPUTATIONAL CHEMISTRY AND PHYSICS 2010. [DOI: 10.1007/978-1-4020-9783-6_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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20
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Sroka IM, Heiss EH, Havlicek L, Totzke F, Aristei Y, Pechan P, Kubbutat MHG, Strnad M, Dirsch VM. A novel roscovitine derivative potently induces G1-phase arrest in platelet-derived growth factor-BB-activated vascular smooth muscle cells. Mol Pharmacol 2009; 77:255-61. [PMID: 19903826 DOI: 10.1124/mol.109.060327] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abnormal vascular smooth muscle cell (VSMC) proliferation contributes to the pathogenesis of restenosis. Thus, drugs interfering with cell cycle progression in VSMC are promising candidates for an antirestenotic therapy. In this study, we pharmacologically characterize N-5-(2-aminocyclohexyl)-N-7-benzyl-3-isopropyl-1(2)H-pyrazolo[4,3-d]pyrimidine-5,7-di-amine (LGR1406), a novel derivative of the cyclin-dependent kinase (CDK) inhibitor roscovitine (ROSC), in PDGF-BB-activated VSMC. Cell proliferation was quantified measuring DNA synthesis via 5-bromo-2'-deoxyuridine incorporation. Analysis of cell cycle distribution was done by flow cytometry using propidium iodide-stained nuclei. Key regulators of the cell cycle and relevant signaling pathways were dissected by Western blot analyses. In addition, in vitro kinase assays and in silico studies regarding the pharmacokinetic profile of both compounds were performed. LGR1406 shows a stronger (IC(50) = 3.0 muM) antiproliferative activity than ROSC (IC(50) = 16.9 muM), halting VSMCs in G(0)/G(1) phase of the cell cycle, whereas ROSC does not arrest but rather delays cell cycle progression. Neither of the compounds interferes with early PDGF-BB-induced signaling pathways (p38, extracellular signal-regulated kinase 1/2, c-Jun NH(2)-terminal kinase, Akt, signal transducer and activator of transcription 3), and both inhibit CDKs, with LGR1406 exerting a slightly higher potency against CDK1/2 and 4 than ROSC. Expression of cyclins A and E as well as hyperphosphorylation of the pocket proteins retinoblastoma protein and p107 are negatively affected by both compounds, although to a different extent. In silico calculations predicted a much higher metabolic stability for LGR1406 compared with ROSC. Altogether, ROSC derivatives, such as LGR1406 seem to be promising compounds for further development in antirestenotic therapy.
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Affiliation(s)
- Irene M Sroka
- University of Vienna, Department of Pharmacognosy, Althanstr. 14, 1090 Vienna, Austria
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Caleta I, Kralj M, Marjanović M, Bertosa B, Tomić S, Pavlović G, Pavelić K, Karminski-Zamola G. Novel cyano- and amidinobenzothiazole derivatives: synthesis, antitumor evaluation, and X-ray and quantitative structure-activity relationship (QSAR) analysis. J Med Chem 2009; 52:1744-56. [PMID: 19265399 DOI: 10.1021/jm801566q] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthesis of a series of novel cyano- and amidinobenzothiazole derivatives 3-31 is described. All studied amidino derivatives showed noticeable antiproliferative effect on several tumor cell lines. Cyano derivatives 11-17 showed considerably less pronounced activity because of their poor solubility in aqueous cell culture medium, which was confirmed by the principal components (PC) analysis. Compounds 21, 22, 28, and 29 were tested for their effects on the cell cycle and apoptosis, whereby 22 and 29, having methyl group at the C-6 position in pyridine ring, showed drastic cell cycle perturbations that were both concentration- and time-dependent and induced apoptosis. The QSAR modeling, based on the physicochemical descriptors and on the measured biological activities, indicated the relevance of molecular polarizability and particular distribution of pharmacophores on the molecular surface for activity. In conclusion, benzothiazoles containing either isopropylamidino or imidazolyl groups will be considered as starting compounds for further investigation on lead identification.
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Affiliation(s)
- Irena Caleta
- 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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Schmitt CA, Heiss EH, Aristei Y, Severin T, Dirsch VM. Norfuraneol dephosphorylates eNOS at threonine 495 and enhances eNOS activity in human endothelial cells. Cardiovasc Res 2008; 81:750-7. [PMID: 19036824 DOI: 10.1093/cvr/cvn326] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
AIM Pentoses are widely abundant in organic food. Thermal treatment of pentoses leads to the formation of norfuraneol (NF). The aim of this study was to show whether NF, which is taken up regularly, for example with cooked food, affects the human endothelial nitric oxide synthase (eNOS) system. METHODS AND RESULTS The study was performed using cultured human umbilical vein endothelial cells (HUVEC), HUVEC-derived EA.hy926 cells, and bovine aortic endothelial cells. Nitric oxide (NO) release and eNOS activity were measured using diaminofluorescein-2 and [14C]L-arginine/[14C]L-citrulline conversion. Levels of (phospho-)eNOS were detected by western blotting. Reactive oxygen species (ROS) production was assessed using 2',7'-dichlorodihydrofluorescein diacetate. Pharmacokinetic parameters of NF were calculated by VolSurf software. NF dose dependently increased eNOS activity and NO release (30-300 microM), but did not affect total eNOS protein or cellular ROS levels. The increase in eNOS activity coincided with specific dephosphorylation of eNOS-Thr495, known to enhance eNOS activity. Inhibition of protein phosphatase 1 (PP1) by calyculin A, tautomycetin, or siRNA against PP1 reversed NF-induced eNOS-Thr495 dephosphorylation. Phosphorylation at eNOS-Ser1177 was not significantly altered by NF. Inhibition of protein kinase C with bisindolylmaleimide I (GFX) or calphostin C mimicked the effect of NF. In contrast to GFX, however, NF had no effect on phorbol-12-myristate-13-acetate-induced endothelial ROS formation. In silico, NF is stable towards CYP3A4 metabolism, shows low protein binding, and high tissue distribution. CONCLUSION NF enhances endothelial NO release most likely by promoting specific dephosphorylation of eNOS-Thr495 via PP1 in vitro and may be a promising compound to enhance endothelial function in vivo.
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Affiliation(s)
- Christoph A Schmitt
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
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Samojłowicz C, Bieniek M, Zarecki A, Kadyrov R, Grela K. The doping effect of fluorinated aromatic hydrocarbon solvents on the performance of common olefin metathesis catalysts: application in the preparation of biologically active compounds. Chem Commun (Camb) 2008:6282-4. [DOI: 10.1039/b816567j] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Novel stereoselective synthesis of all four diastereomers of 3a-methyl-pyrrolo[3,4-c]piperidine from glycine ethyl ester. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.05.100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Al-Hiari YM, Al-Mazari IS, Shakya AK, Darwish RM, Abu-Dahab R. Synthesis and antibacterial properties of new 8-nitrofluoroquinolone derivatives. Molecules 2007; 12:1240-58. [PMID: 17876293 PMCID: PMC6149507 DOI: 10.3390/12061240] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2007] [Revised: 06/19/2007] [Accepted: 06/20/2007] [Indexed: 11/16/2022] Open
Abstract
The objective of this research was the preparation of new 8-nitrofluoroquinolone models and investigation of their antibacterial properties. The work initially involved large scale preparation of the synthon 7-chloro-1-cyclopropyl-6-fluoro-8-nitro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (3), followed by introduction of substituted primary amine appendages at the C-7 position to give derivatives 9a-g, in which the amino group is appended to substituted benzenes or aromatic heterocycles, is part of a primary alpha-amino acid or just a simple primary aliphatic amine. This nucleophilic aromatic substitution step was a very simple procedure since the 8-nitro group of the above synthon facilitated the addition of weak nucleophiles at C-7. All compounds prepared were fully identified and characterized using NMR, IR, EA and MS, and were consistent with expected structures. The prepared targets and the intermediates have shown interesting antibacterial activity against gram positive and/or gram negative strains. In particular, the p-toluidine, p-chloroaniline and aniline derivatives showed good activity against S. aureus with MIC range approximately 2-5 microg/mL. In conclusion, more lipophilic groups seem to enhance activity against gram positive strains.
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Ishar MPS, Singh G, Singh S, Sreenivasan KK, Singh G. Design, synthesis, and evaluation of novel 6-chloro-/fluorochromone derivatives as potential topoisomerase inhibitor anticancer agents. Bioorg Med Chem Lett 2006; 16:1366-70. [PMID: 16332438 DOI: 10.1016/j.bmcl.2005.11.044] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2005] [Revised: 10/30/2005] [Accepted: 11/14/2005] [Indexed: 11/17/2022]
Abstract
6-Chloro-2-pyrrolidino-/morpholino-/piperidino-/N-methylpiperazino-3-formyl-chromones (13-16) and 6-fluoro-2,7-di-morpholino-/piperidino-/N-methylpiperazino-3-formylchromones (17-19) have been synthesized as potential topoisomerase inhibitor anticancer agents, and evaluated, in vitro, against Ehrlich ascites carcinoma (EAC) cells, and also in vivo on EAC bearing mice. The compounds displayed promising anticancer activity under these test systems and shall serve as useful 'leads' for further design.
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Affiliation(s)
- M P S Ishar
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar 143 005, Punjab, India.
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Berellini G, Cruciani G, Mannhold R. Pharmacophore, Drug Metabolism, and Pharmacokinetics Models on Non-Peptide AT1, AT2, and AT1/AT2Angiotensin II Receptor Antagonists. J Med Chem 2005; 48:4389-99. [PMID: 15974591 DOI: 10.1021/jm049024x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
About 20 non-peptide angiotensin II receptor antagonists are in various stages of clinical development. Different modeling approaches were used to predict the pharmacophoric requirements for AT(1) (angiotensin II receptor subtype 1) affinity. However, to our knowledge, none was used to predict both the selectivity toward AT(1) and AT(2) (angiotensin II receptor subtype 2) receptor subtypes. In this paper, partial least squares discriminant analysis is applied to derive the chemical features guiding AT(1) and AT(2) selectivity or mixed AT(1)/AT(2) receptor binding. The method can be used to modulate AT(1) versus AT(2) selectivity. Concerns that unopposed stimulation of the AT(2) receptor might produce adverse effects initiated a search for new balanced antagonists. Moreover, it can serve as a fast filtering procedure in database searches. Finally, some relevant pharmacokinetics and metabolic properties of the database of 53 compounds are calculated using the VolSurf and MetaSite software to allow the simultaneous characterization of pharmacodynamic and pharmacokinetics properties of the chemical space of angiotensin II receptor antagonists.
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Affiliation(s)
- Giuliano Berellini
- Laboratory for Chemometrics and Cheminformatics, Department of Chemistry, University of Perugia, Via Elce di sotto 10, I-06123 Perugia, Italy
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Doddareddy MR, Cha JH, Cho YS, Koh HY, Yoo KH, Kim DJ, Pae AN. Volsurf analysis of carbapenem antibiotics. Bioorg Med Chem 2005; 13:3339-49. [PMID: 15848746 DOI: 10.1016/j.bmc.2005.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2005] [Revised: 03/10/2005] [Accepted: 03/10/2005] [Indexed: 11/30/2022]
Abstract
Classical Volsurf approach was applied to a set of 70 carbapenem compounds acting as antibiotics. Antibacterial activity of Staphylococcus aureus SG 511 and Escherichia coli 078 representing Gram positive and Gram negative bacteria, respectively, was used for the analysis. The score plots obtained from principal component analysis showed clustering of compounds according to the activity and their loading plots explained the Volsurf descriptors responsible for the separation or peculiar behaviour of these compounds. Partial Least Square analysis yielded a seven component model for S. aureus with a cross-validated r2 (q2) value of 0.684 and conventional r2 value of 0.883 and for E. coli it is a six component model with cross-validated r2 (q2) value of 0.514 and conventional r2 value of 0.756. Both the PCA and PLS models were validated by an external test set of 15 compounds. All the compounds of the test set were fairly predicted with residual values less than one log unit. Comparatively activity data of S. aureus (Gram positive) was better explained than E. coli (Gram negative) by these models.
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Affiliation(s)
- Munikumar Reddy Doddareddy
- Life Science Division, Korea Institute of Science and Technology, PO Box 131, Cheongryang, Seoul 130-650, Korea
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29
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Biava M, Porretta GC, Poce G, Deidda D, Pompei R, Tafi A, Manetti F. Antimycobacterial compounds. Optimization of the BM 212 structure, the lead compound for a new pyrrole derivative class. Bioorg Med Chem 2005; 13:1221-30. [PMID: 15670931 DOI: 10.1016/j.bmc.2004.11.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2004] [Accepted: 11/09/2004] [Indexed: 11/23/2022]
Abstract
Our work on antitubercular agents led to the identification of BM 212 as a lead compound among a series of pyrrole derivatives with good in vitro activity against mycobacteria and candidae. Further studies led us to synthesize additional pyrroles bearing the thiomorpholinomethyl moiety and different aryl substituents at N1 and C5. Some of them revealed very active, prompting us to design the new pyrrole derivatives 5-20 in the hope of increasing the activity and better understanding the influence of ortho halogens on the antimycobacterial activity. Microbiological data showed interesting in vitro activity toward Mycobacterium tuberculosis and atypical mycobacteria.
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Affiliation(s)
- Mariangela Biava
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università La Sapienza, P.le A. Moro 5, 00185 Rome, Italy.
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