451
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Synthesis of 5-amino-2-aminoalkyl-1,3-oxazol-4-ylphosphonic acid derivatives and their use in the preparation of phosphorylated peptidomimetics. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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452
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Pícha J, Vaněk V, Buděšínský M, Mládková J, Garrow TA, Jiráček J. The development of a new class of inhibitors for betaine-homocysteine S-methyltransferase. Eur J Med Chem 2013; 65:256-75. [DOI: 10.1016/j.ejmech.2013.04.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 04/19/2013] [Accepted: 04/20/2013] [Indexed: 01/12/2023]
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453
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Direct high-performance liquid chromatographic enantioseparation of free α-, β- and γ-aminophosphonic acids employing cinchona-based chiral zwitterionic ion exchangers. Anal Bioanal Chem 2013; 405:8027-38. [DOI: 10.1007/s00216-013-6938-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 03/18/2013] [Accepted: 03/21/2013] [Indexed: 01/22/2023]
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454
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Proniewicz E, Pięta E, Kudelski A, Piergies N, Skołuba D, Kim Y, Proniewicz LM. Vibrational and Theoretical Studies of the Structure and Adsorption Mode of m-Nitrophenyl α-Guanidinomethylphosphonic Acid Analogues on Silver Surfaces. J Phys Chem A 2013; 117:4963-72. [PMID: 23682748 DOI: 10.1021/jp403045g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Edyta Proniewicz
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Ewa Pięta
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Andrzej Kudelski
- Faculty of Chemistry, University of Warsaw, ul. L. Pasteura 1, 02-093 Warsaw, Poland
| | - Natalia Piergies
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Dominika Skołuba
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
| | - Younkyoo Kim
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, Kyunggi-Do,
449-791, Korea
| | - Leonard M. Proniewicz
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
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455
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456
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Ye MY, Yao GY, Wei JC, Pan YM, Liao ZX, Wang HS. Synthesis, cytotoxicity, DNA binding and apoptosis of rhein-phosphonate derivatives as antitumor agents. Int J Mol Sci 2013; 14:9424-39. [PMID: 23629673 PMCID: PMC3676791 DOI: 10.3390/ijms14059424] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 04/12/2013] [Accepted: 04/15/2013] [Indexed: 01/04/2023] Open
Abstract
Several rhein-phosphonate derivatives (5a-c) were synthesized and evaluated for in vitro cytotoxicity against HepG-2, CNE, Spca-2, Hela and Hct-116 cell lines. Some compounds showed relatively high cytotoxicity. Especially compounds 5b exhibited the strongest cytotoxicity against HepG-2 and Spca-2 cells (IC50 was 8.82 and 9.01 µM), respectively. All the synthesized compounds exhibited low cytotoxicity against HUVEC cells. Further experiments proved that 5b could disturb the cell cycle in HepG-2 cells and induce apoptosis. In addition, the binding properties of a model conjugate 5b to DNA were investigated by methods (UV-Vis, fluorescence, CD spectroscopy). Results indicated that 5b showed moderate ability to interact ct-DNA.
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Affiliation(s)
- Man-Yi Ye
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, China; E-Mails: (M.-Y.Y.); (G.-Y.Y.)
| | - Gui-Yang Yao
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, China; E-Mails: (M.-Y.Y.); (G.-Y.Y.)
| | - Jing-Chen Wei
- College of Pharmacy, Guilin Medical University, Guilin 541004, China; E-Mail:
| | - Ying-Ming Pan
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, China; E-Mails: (M.-Y.Y.); (G.-Y.Y.)
| | - Zhi-Xin Liao
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; E-Mail:
| | - Heng-Shan Wang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Chemical Engineering of Guangxi Normal University, Guilin 541004, China; E-Mails: (M.-Y.Y.); (G.-Y.Y.)
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457
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Bálint E, Takács J, Drahos L, Juranovič A, Kočevar M, Keglevich G. α-Aminophosphonates and α-Aminophosphine Oxides by the Microwave-Assisted Kabachnik-Fields Reactions of 3-Amino-6-methyl-2H-pyran-2-ones. HETEROATOM CHEMISTRY 2013. [DOI: 10.1002/hc.21086] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Judit Takács
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; 1521; Budapest; Hungary
| | - László Drahos
- Hungarian Academy of Sciences; Chemical Research Center; 1525; Budapest; Hungary
| | - Amadej Juranovič
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; 1000; Ljubljana; Slovenia
| | - Marijan Kočevar
- Faculty of Chemistry and Chemical Technology; University of Ljubljana; 1000; Ljubljana; Slovenia
| | - György Keglevich
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; 1521; Budapest; Hungary
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458
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Alonso C, González M, Fuertes M, Rubiales G, Ezpeleta JM, Palacios F. Synthesis of Fluorinated β-Aminophosphonates and γ-Lactams. J Org Chem 2013; 78:3858-66. [DOI: 10.1021/jo400281e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Concepción Alonso
- Departamento de Quı́mica Orgánica I and Centro
de Investigacion Lascaray (Lascaray Research Center) and ‡Departamento de Fı́sica
Aplicada, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - Marı́a González
- Departamento de Quı́mica Orgánica I and Centro
de Investigacion Lascaray (Lascaray Research Center) and ‡Departamento de Fı́sica
Aplicada, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - Marı́a Fuertes
- Departamento de Quı́mica Orgánica I and Centro
de Investigacion Lascaray (Lascaray Research Center) and ‡Departamento de Fı́sica
Aplicada, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - Gloria Rubiales
- Departamento de Quı́mica Orgánica I and Centro
de Investigacion Lascaray (Lascaray Research Center) and ‡Departamento de Fı́sica
Aplicada, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - Jose Marı́a Ezpeleta
- Departamento de Quı́mica Orgánica I and Centro
de Investigacion Lascaray (Lascaray Research Center) and ‡Departamento de Fı́sica
Aplicada, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - Francisco Palacios
- Departamento de Quı́mica Orgánica I and Centro
de Investigacion Lascaray (Lascaray Research Center) and ‡Departamento de Fı́sica
Aplicada, Facultad de Farmacia, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria, Spain
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459
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Łyżwa P, Błaszczyk J, Sieroń L, Mikołajczyk M. Asymmetric Synthesis of Structurally Diverse Aminophosphonic Acids by Using EnantiopureN-(p-Tolylsulfinyl)cinnamaldimines as Reagents. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201589] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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460
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Drabik E, Krasiński G, Cypryk M, Błaszczyk R, Gajda T, Sochacki M. Differentiation of diastereoisomers of protected 1,2-diaminoalkylphosphonic acids by EI mass spectrometry and density functional theory. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:388-398. [PMID: 23393058 PMCID: PMC3586168 DOI: 10.1007/s13361-012-0556-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 11/28/2012] [Accepted: 11/29/2012] [Indexed: 06/01/2023]
Abstract
Electron ionization mass spectrometry and density functional theory (DFT) calculations have been used to study the fragmentation of diastereoisomers of protected 1,2-diaminoalkylphosphonic acids. The loss of a diethoxyphosphoryl group and the elimination of diethyl phosphonate were found to be competitive fragmentation processes, which can be used to differentiate both stereoisomers. Selective deuterated analogs and product- and precursor-ion mass spectra allowed the elucidation of the fragmentation mechanisms. The structures of the transition states and product ions were optimized using the density functional theory (DFT), and free energy calculations confirmed the observed differences in the formation and relative intensities of specific fragment ions.
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Affiliation(s)
- Ewelina Drabik
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Laboratory for Analysis of Organic Compounds and Polymers, Łódź, Poland.
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461
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David T, Procházková S, Havlíčková J, Kotek J, Kubíček V, Hermann P, Lukeš I. Methylene-bis[(aminomethyl)phosphinic acids]: synthesis, acid–base and coordination properties. Dalton Trans 2013. [DOI: 10.1039/c2dt32045b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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462
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Pallikonda G, Chakravarty M. Triflic acid mediated functionalization of α-hydroxyphosphonates: route for sulfonamide phosphonates. RSC Adv 2013. [DOI: 10.1039/c3ra43823f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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463
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Turcheniuk KV, Kukhar VP, Röschenthaler GV, Aceña JL, Soloshonok VA, Sorochinsky AE. Recent advances in the synthesis of fluorinated aminophosphonates and aminophosphonic acids. RSC Adv 2013. [DOI: 10.1039/c3ra22891f] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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464
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Yamagishi T, Kinbara A, Okubo N, Sato S, Fukaya H. Diastereoselective synthesis of Pro-Phe phosphinyl dipeptide isosteres. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.10.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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465
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Synthesis and modifications of phosphinic dipeptide analogues. Molecules 2012; 17:13530-68. [PMID: 23154272 PMCID: PMC6268094 DOI: 10.3390/molecules171113530] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 11/09/2012] [Accepted: 11/12/2012] [Indexed: 01/01/2023] Open
Abstract
Pseudopeptides containing the phosphinate moiety (-P(O)(OH)CH2-) have been studied extensively, mainly as transition state analogue inhibitors of metalloproteases. The key synthetic aspect of their chemistry is construction of phosphinic dipeptide derivatives bearing appropriate side-chain substituents. Typically, this synthesis involves a multistep preparation of two individual building blocks, which are combined in the final step. As this methodology does not allow simple variation of the side-chain structure, many efforts have been dedicated to the development of alternative approaches. Recent achievements in this field are summarized in this review. Improved methods for the formation of the phosphinic peptide backbone, including stereoselective and multicomponent reactions, are presented. Parallel modifications leading to the structurally diversified substituents are also described. Finally, selected examples of the biomedical applications of the title compounds are given.
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466
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Węglarz-Tomczak E, Poręba M, Byzia A, Berlicki Ł, Nocek B, Mulligan R, Joachimiak A, Drąg M, Mucha A. An integrated approach to the ligand binding specificity of Neisseria meningitidis M1 alanine aminopeptidase by fluorogenic substrate profiling, inhibitory studies and molecular modeling. Biochimie 2012; 95:419-28. [PMID: 23131591 DOI: 10.1016/j.biochi.2012.10.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 10/15/2012] [Indexed: 12/11/2022]
Abstract
Neisseria meningitides is a gram-negative diplococcus bacterium and is the main causative agent of meningitis and other meningococcal diseases. Alanine aminopeptidase from N. meningitides (NmAPN) belongs to the family of metallo-exopeptidase enzymes, which catalyze the removal of amino acids from the N-terminus of peptides and proteins, and are found among all the kingdoms of life. NmAPN is suggested to be mostly responsible for proteolysis and nutrition delivery, similar to the orthologs from other bacteria. To explore the possibility of NmAPN being a potential drug target for inhibition and development of novel therapeutic agents, the specificity of the S1 and S1' binding sites was explored using an integrated approach. Initially, an extensive library consisting of almost 100 fluorogenic substrates derived from both natural and unnatural amino acids, were used to obtain a detailed substrate fingerprint of the S1 pocket of NmAPN. A broad substrate tolerance of NmAPN was revealed, with bulky basic and hydrophobic ligands being the most favored substrates. Additionally, the potency of a set of organophosphorus inhibitors of neutral aminopeptidases, amino acid and dipeptide analogs was determined. Inhibition constants in the nanomolar range, determined for phosphinic dipeptides, proves the positive increase in inhibition impact of the P1' ligand elongation. The results were further verified via molecular modeling and docking of canonical aminopeptidase phosphinic dipeptide inhibitors in the NmAPN active site. These studies present comprehensive characterization of interactions responsible for specific ligand binding. This knowledge provides invaluable insight into understanding of the enzyme and development of novel NmAPN inhibitors.
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Affiliation(s)
- Ewelina Węglarz-Tomczak
- Department of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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467
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Keglevich G, Bálint E. The Kabachnik-Fields reaction: mechanism and synthetic use. Molecules 2012; 17:12821-35. [PMID: 23117425 PMCID: PMC6268146 DOI: 10.3390/molecules171112821] [Citation(s) in RCA: 184] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 10/25/2012] [Accepted: 10/26/2012] [Indexed: 11/23/2022] Open
Abstract
The Kabachnik–Fields (phospha-Mannich) reaction involving the condensation of primary or secondary amines, oxo compounds (aldehydes and ketones) and >P(O)H species, especially dialkyl phosphites, represents a good choice for the synthesis of α-aminophosphonates that are of significant importance due to their biological activity. In general, these three-component reactions may take place via an imine or an α-hydroxy-phosphonate intermediate. The monitoring of a few Kabachnik–Fields reactions by in situ Fourier transform IR spectroscopy has indicated the involvement of the imine intermediate that was also justified by theoretical calculations. The Kabachnik–Fields reaction was extended to >P(O)H species, comprising cyclic phosphites, acyclic and cyclic H-phosphinates, as well as secondary phosphine oxides. On the other hand, heterocyclic amines were also used to prepare new α-amino phosphonic, phosphinic and phosphine oxide derivatives. In most cases, the synthesis under solvent-free microwave (MW) conditions is the method of choice. It was proved that, in the cases studied by us, there was no need for the use of any catalyst. Moreover, it can be said that sophisticated and environmentally unfriendly catalysts suggested are completely unnecessary under MW conditions. Finally, the double Kabachnik–Fields reaction has made available bis(phosphonomethyl)amines, bis(phosphinoxidomethyl)amines and related species. The bis(phosphinoxidomethyl)amines serve as precursors for bisphosphines that furnish ring platinum complexes on reaction with dichlorodibenzonitriloplatinum.
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Affiliation(s)
- György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary.
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468
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Gu L, Wang R, Huang X, Jin C. Novel Synthetic Route toα-Aminophosphonates Containing Benzothiazole Moiety. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200831] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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469
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Vicario J, Ezpeleta JM, Palacios F. Asymmetric Cyanation of α-Ketiminophosphonates Catalyzed byCinchonaAlkaloids: Enantioselective Synthesis of Tetrasubstituted α-Aminophosphonic Acid Derivatives from Trisubstituted α-Aminophosphonates. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200516] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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470
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Bhattacharya AK, Rana KC, Pannecouque C, De Clercq E. An Efficient Synthesis of a Hydroxyethylamine (HEA) Isostere and Its α-Aminophosphonate and Phosphoramidate Derivatives as Potential Anti-HIV Agents. ChemMedChem 2012; 7:1601-11. [DOI: 10.1002/cmdc.201200271] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 06/12/2012] [Indexed: 11/09/2022]
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471
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Tripathi CB, Kayal S, Mukherjee S. Catalytic asymmetric synthesis of α,β-disubstituted α,γ-diaminophosphonic acid precursors by Michael addition of α-substituted nitrophosphonates to nitroolefins. Org Lett 2012; 14:3296-9. [PMID: 22702411 DOI: 10.1021/ol3012666] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Michael additions of α-substituted nitrophosphonates to various nitroolefins are shown to proceed with high diastereo- and enantioselectivity when catalyzed by a quinine-derived thiourea-tertiary amine bifunctional catalyst and generate α,γ-diaminophosphonic acid precursors with contiguous quaternary and tertiary stereocenters.
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472
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Montel S, Midrier C, Volle JN, Braun R, Haaf K, Willms L, Pirat JL, Virieux D. Functionalized Phosphanyl-Phosphonic Acids as Unusual Complexing Units as Analogues of Fosmidomycin. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200210] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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473
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Demoro B, Caruso F, Rossi M, Benítez D, González M, Cerecetto H, Galizzi M, Malayil L, Docampo R, Faccio R, Mombrú AW, Gambino D, Otero L. Bisphosphonate metal complexes as selective inhibitors of Trypanosoma cruzi farnesyl diphosphate synthase. Dalton Trans 2012; 41:6468-76. [PMID: 22344249 DOI: 10.1039/c2dt12179d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the search for a pharmacological answer to treat Chagas disease, eight metal complexes with two bioactive bisphosphonates, alendronate (Ale) and pamidronate (Pam), were described. Complexes of the formula [M(2)(II)(Ale)(4)(H(2)O)(2)]·2H(2)O, with M = Cu, Co, Mn, Ni, and ([CuPam]·H(2)O)(n) as well as [M(II)(Pam)(2)(H(2)O)(2)]·3H(2)O, with M = Co, Mn and Ni, were synthesized and fully characterized. Crystal structure of [Cu(2)(II)(Ale)(4)(H(2)O)(2)]·2H(2)O, [Co(II)(Pam)(2)(H(2)O)(2)] and [Ni(II)(Pam)(2)(H(2)O)(2)] were solved by X-ray single crystal diffraction methods and the structures of [M(2)(II)(Ale)(4)(H(2)O)(2)]·2H(2)O complexes M = Co, Mn and Ni were studied by X-ray powder diffraction methods. All obtained complexes were active against the amastigote form of Trypanosoma cruzi (T. cruzi), etiological agent of Chagas disease. Most of them were more active than the corresponding free ligands showing no toxicity for mammalian cells. The main mechanism of the antiparasitic action of bisphosphonates, inhibition of parasitic farnesyl diphosphate synthase (TcFPPS), remains in the obtained metal complexes and an increase in the inhibiting enzyme levels was observed upon coordination. Observed enzymatic inhibition was selective for TcFPPS as the metal complexes showed no or little inhibition of human FPPS. Additionally, metal complexation might improve the bioavailability of the complexes through the hindrance of the phosphonate group's ionization at physiological pH and, eventually, through the ability of plasma proteins to work as complex transporters.
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Affiliation(s)
- Bruno Demoro
- Cátedra de Química Inorgánica, DEC, Facultad de Química, Universidad de la República, Montevideo, Uruguay
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474
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Bera K, Namboothiri INN. Enantioselective synthesis of quaternary α-aminophosphonates via conjugate addition of α-nitrophosphonates to enones. Org Lett 2012; 14:980-3. [PMID: 22316431 DOI: 10.1021/ol203132h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Enantioselective Michael addition of α-nitrophosphonates to enones for the synthesis of α-aminophosphonates is reported for the first time. The reaction proceeds in good to high yields and moderate to high selectivity in the presence of a new quinine thiourea catalyst. The quaternary nitrophosphonates were conveniently transformed to cyclic quaternary α-aminophosphonates via in situ reduction-intramolecular cyclization or Baeyer-Villiger oxidation followed by in situ reduction-intramolecular cyclization.
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Affiliation(s)
- Kalisankar Bera
- Department of Chemistry, Indian Institute of Technology, Bombay, Mumbai 400 076, India
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475
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Kaboudin B, Arefi M, Emadi S, Sheikh-Hasani V. Synthesis and inhibitory activity of ureidophosphonates, against acetylcholinesterase: pharmacological assay and molecular modeling. Bioorg Chem 2012; 41-42:22-7. [PMID: 22341898 DOI: 10.1016/j.bioorg.2012.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 01/10/2012] [Accepted: 01/16/2012] [Indexed: 02/02/2023]
Abstract
A novel method has been developed for the synthesis of 1-ureidophosphonates through a three components condensation of aldehyde with amine and diethylphosphite in the presence of sulfanilic acid as catalyst followed by subsequent reaction of the product with isocyanate. This method is easy, rapid, and good yielding. The anticholinesterase (AChE) activities (inhibition potency through IC(50)) of newly synthesized 1-ureidophosphonates were also investigated. The activities of the synthesized compounds toward the enzyme AChE were determined and compared in terms of their molecular structures and it was found, through molecular docking simulations, that the most potent derivative (compound 3i) inhibited the enzyme through binding to the peripheral anionic site (PAS) and not to its acylation site (A site).
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Affiliation(s)
- Babak Kaboudin
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Gava Zang, Zanjan 45137-66731, Iran.
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476
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Turcheniuk KV, Poliashko KO, Kukhar VP, Rozhenko AB, Soloshonok VA, Sorochinsky AE. Efficient asymmetric synthesis of trifluoromethylated β-aminophosphonates and their incorporation into dipeptides. Chem Commun (Camb) 2012; 48:11519-21. [DOI: 10.1039/c2cc36702e] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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477
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Gu L, Jin C. Synthesis and antitumor activity of α-aminophosphonates containing thiazole[5,4-b]pyridine moiety. Org Biomol Chem 2012; 10:7098-102. [DOI: 10.1039/c2ob25875g] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
478
|
Matveeva EV, Shipov AE, Petrovskii PV, Odinets IL. Amino acids as suitable N-nucleophiles for the aza-Michael reaction of vinylphosphoryl compounds in water. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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