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Huszár B, Szolga R, Bősze S, Oláhné Szabó R, Simon A, Karaghiosoff K, Czugler M, Drahos L, Keglevich G. Synthesis and Anticancer Activity of Phosphinoylated and Phosphonoylated N-Heterocycles Obtained by the Microwave-Assisted Palladium Acetate-Catalyzed Hirao Reaction. Chemistry 2023; 29:e202302465. [PMID: 37711077 DOI: 10.1002/chem.202302465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 09/12/2023] [Indexed: 09/16/2023]
Abstract
A literature survey showed that different derivatives with the 9-phenyl-9H-carbazole or the dihydroindoline scaffold may be of biological activity including cytotoxic effect. Driven by this experience, P-functionalized derivatives of these N-heterocycles were synthesized. Three N-heterocycles, 9-(4-bromophenyl)-9H-carbazole, 3-bromo-9-phenyl-9H-carbazole and 1-(5-bromoindolin-1-yl)ethan-1-one, were coupled with dialkyl phosphites and diarylphosphine oxides using Pd(OAc)2 (10 %) as the catalyst precursor and triethylamine as the base in ethanol under microwave irradiation. The excess of the Y2 P(O)H reagent (Y=alkoxy, aryl) (30 %) served as the P-ligand in its trivalent tautomeric form (Y2 POH), hence there was no need for the usual P-ligands meaning cost and environmental burden. Hence, the presented method is a "green" approach that proved to be more efficient than the preparation by the traditional method. The products, dialkyl phosphonates and tertiary phosphine oxides obtained in 58-84 % yields were characterized, one of them also by single crystal X-ray analysis, and were subjected to in vitro biological activity evaluation. A (carbazol)yl-phenylphosphonate, an N-phenyl-(carbazol)yl-phosphonate, a (carbazol)yl-phenylphosphine oxide and an N-phenyl-(carbazol)ylphosphine oxide revealed a significant cytotoxic activity on A549 human non-small-cell lung carcinoma and MonoMac-6 acute monocytic leukemia cancer cells. The cytotoxic effect was significant as compared to that of the reference compounds.
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Affiliation(s)
- Bianka Huszár
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - Renáta Szolga
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - Szilvia Bősze
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117, Budapest, Hungary
| | - Rita Oláhné Szabó
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117, Budapest, Hungary
- Department of Genetics, Cell-and Immunobiology, Semmelweis University, 1089, Budapest, Nagyvárad tér 4, Hungary
| | - András Simon
- Department of Inorganic and Analytical Chemistry, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - Konstantin Karaghiosoff
- Department Chemie, Ludwig-Maximilians-Universitat München, 81377, München, Butenandtstr. 5-13, Germany
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, 1117, Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
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Szalai Z, Tóth B, Szabó RO, Bősze S, Karaghiosoff K, Czugler M, Drahos L, Keglevich G. A Study of the Bisphosphonic Derivatives from the Pudovik Reaction of Dialkyl α-Oxophosphonates and >P(O)H Reagents: X-ray Structure and Bioactivity. Molecules 2023; 28:6037. [PMID: 37630289 PMCID: PMC10459769 DOI: 10.3390/molecules28166037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
New hydroxy-methylenebisphosphonic derivatives were prepared with different P-functions. The outcome of the reaction of α-oxophosphonates (YC(O)P(O)(OR)2) and dialkyl phosphites or diarylphosphine oxides depended on the Y substituent of the oxo-compound, the nature of the P-reagent and the amount of the diethylamine catalyst. Starting from dimethyl α-oxoethylphosphonate, in the presence of 5% of diethylamine, the corresponding Pudovik adduct was the single product. While using 40% of the catalyst, the rearranged species with the >P(O)-O-CH-P(O)< skeleton was the exclusive component. A similar reaction of α-oxobenzylphosphonate followed the rearrangement protocol. X-ray crystallography revealed not only the spatial structures of the three products, but also an intricate pattern evolving from the interplay of slight chemical differences, solvent inclusion and disorder as well as H-bridge patterns, which invite further investigation. In vitro activity of the compounds was assessed on different tumor cell cultures using end-point-type cell tetrazolium-based measurements. These structure-activity studies revealed a cytostatic effect for four rearranged derivatives containing aromatic units. One of them had a pronounced effect on MDA-MB 231 and Ebc-1 cells, showing IC50 = 37.8 and 25.9 µM, respectively.
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Affiliation(s)
- Zsuzsanna Szalai
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (Z.S.); (B.T.); (M.C.)
| | - Boldizsár Tóth
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (Z.S.); (B.T.); (M.C.)
| | - Rita Oláhné Szabó
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (R.O.S.); (S.B.)
- Department of Genetics, Cell and Immunobiology, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary
| | - Szilvia Bősze
- Eötvös Loránd Research Network (ELKH), Research Group of Peptide Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (R.O.S.); (S.B.)
| | - Konstantin Karaghiosoff
- Department Chemie, Ludwig-Maximilians-Universitat München, Butenandtstr. 5-13, D-81377 München, Germany;
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (Z.S.); (B.T.); (M.C.)
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, 1117 Budapest, Hungary;
| | - György Keglevich
- Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, 1521 Budapest, Hungary; (Z.S.); (B.T.); (M.C.)
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Hudson HR, Tajti Á, Bálint E, Czugler M, Karaghiosoff K, Keglevich G. Microwave-assisted synthesis of α-aminophosphonates with sterically demanding α-aryl substituents. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2019.1679186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Harry R. Hudson
- Faculty of Life Sciences and Computing, London Metropolitan University, London, UK
| | - Ádám Tajti
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Erika Bálint
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | | | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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Rádai Z, Kiss NZ, Czugler M, Karaghiosoff K, Keglevich G. The typical crystal structures of a few representative α-aryl-α-hydroxyphosphonates. Acta Crystallogr C Struct Chem 2019; 75:283-293. [PMID: 30833523 DOI: 10.1107/s2053229619001839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 01/31/2019] [Indexed: 11/10/2022]
Abstract
The crystal structures of seven α-aryl-α-hydroxyphosphonates synthesized by the Pudovik reaction of substituted benzaldehydes and dialkyl phosphites, namely dimethyl [(hydroxy)(phenyl)methyl]phosphonate, C9H13O4P, dimethyl [(3,4-dimethoxyphenyl)(hydroxy)methyl]phosphonate, C11H17O6P, dimethyl (1-hydroxy-1-phenylethyl)phosphonate, C10H15O4P, dimethyl [1-hydroxy-1-(4-nitrophenyl)ethyl]phosphonate, C10H14NO6P, dibenzyl [hydroxy(2-nitrophenyl)methyl]phosphonate, C21H20NO6P, dibenzyl [(3-chlorophenyl)(hydroxy)methyl]phosphonate, C21H20ClO4P, and dibenzyl [hydroxy(4-methylphenyl)methyl]phosphonate, C22H23O4P, were studied to gain a better understanding of the organization in this type of molecule in the solid state. The crystals obtained for this series of compounds show a balance between C-OH...O=P chain-linked packing and the dimeric types of hydrogen-bond bridges of intermolecular pairs of such functions. The description is based on primary graph-set descriptors. Using graph-set descriptors one level deeper (i.e. secondary graph sets of the C-H...O type) revealed a similarity in the graph-set descriptors, suggesting a fine interplay of substituent- and shape-dependent effects on strong-weak interactions. It seems that the formation of chains or dimers is governed not only by the presence of a tertiary Cα atom, but also by the nature and crowding of the ortho substituents of the α-aryl group.
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Affiliation(s)
- Zita Rádai
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest 1521, Hungary
| | - Nóra Zsuzsa Kiss
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest 1521, Hungary
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest 1521, Hungary
| | | | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest 1521, Hungary
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5
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Bagi P, Varga B, Szilágyi A, Karaghiosoff K, Czugler M, Fogassy E, Keglevich G. The resolution of acyclic P
-stereogenic phosphine oxides via the formation of diastereomeric complexes: A case study on ethyl-(2-methylphenyl)-phenylphosphine oxide. Chirality 2018; 30:509-522. [DOI: 10.1002/chir.22816] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/06/2017] [Accepted: 12/08/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Péter Bagi
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
| | - Bence Varga
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
| | - András Szilágyi
- Department of Physical Chemistry and Material Science; Budapest University of Technology and Economics; Budapest Hungary
| | | | - Mátyás Czugler
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
| | - Elemér Fogassy
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
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6
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Bálint E, Tajti Á, Ádám A, Csontos I, Karaghiosoff K, Czugler M, Ábrányi-Balogh P, Keglevich G. The synthesis of α-aryl-α-aminophosphonates and α-aryl-α-aminophosphine oxides by the microwave-assisted Pudovik reaction. Beilstein J Org Chem 2017; 13:76-86. [PMID: 28179951 PMCID: PMC5238548 DOI: 10.3762/bjoc.13.10] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 12/15/2016] [Indexed: 12/05/2022] Open
Abstract
A family of α-aryl-α-aminophosphonates and α-aryl-α-aminophosphine oxides was synthesized by the microwave-assisted solvent-free addition of dialkyl phosphites and diphenylphosphine oxide, respectively, to imines formed from benzaldehyde derivatives and primary amines. After optimization, the reactivity was mapped, and the fine mechanism was evaluated by DFT calculations. Two α-aminophosphonates were subjected to an X-ray study revealing a racemic dimer formation made through a N-H···O=P intermolecular hydrogen bridges pair.
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Affiliation(s)
- Erika Bálint
- MTΑ-BME Research Group for Organic Chemical Technology, 1521 Budapest, Hungary
| | - Ádám Tajti
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Anna Ádám
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - István Csontos
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | | | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
| | - Péter Ábrányi-Balogh
- Hungarian Academy of Sciences, Research Centre for Natural Sciences, Institute of Organic Chemistry, 1519 Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Hungary
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7
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Hudson HR, Czugler M, Lee RJ, Woodroffe TM. Extremely short H···H distances and intermolecular hydrogen-bonding patterns of dialkyl α-aryl-α-(diphenylmethylamino)methanephosphonates. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1091833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Harry R. Hudson
- Faculty of Life Sciences and Computing, London Metropolitan University, London, UK
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Rosalind J. Lee
- Faculty of Life Sciences and Computing, London Metropolitan University, London, UK
| | - Thomas M. Woodroffe
- Faculty of Life Sciences and Computing, London Metropolitan University, London, UK
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8
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Bagi P, Karaghiosoff K, Czugler M, Hessz D, Kállay M, Kubinyi M, Szilvási T, Pongrácz P, Kollár L, Timári I, Kövér KE, Drahos L, Fogassy E, Keglevich G. Synthesis, Characterization, and Application of Platinum(II) Complexes Incorporating Racemic and Optically Active 4-Chloro-5-Methyl-1-Phenyl-1,2,3,6-Tetrahydrophosphinine Ligand. Heteroatom Chem 2016. [DOI: 10.1002/hc.21305] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Péter Bagi
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - Konstantin Karaghiosoff
- Department Chemie und Biochemie; Ludwig-Maximilians-Universität München; München 81377 Germany
| | - Mátyás Czugler
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - Dóra Hessz
- Department of Physical Chemistry and Material Science; Budapest University of Technology and Economics; Budapest 1521 Hungary
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest 1525 Hungary
| | - Mihály Kállay
- MTA-BME Lendület Quantum Chemistry Research Group
- Department of Physical Chemistry and Material Science; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - Miklós Kubinyi
- Department of Physical Chemistry and Material Science; Budapest University of Technology and Economics; Budapest 1521 Hungary
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest 1525 Hungary
| | - Tibor Szilvási
- Department of Inorganic and Analytical Chemistry; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - Péter Pongrácz
- Department of Inorganic Chemistry; University of Pécs and Szentágothai Research Center; Pécs 7624 Hungary
- MTA-PTE Research Group for Selective Chemical Syntheses; 7624 Pécs Hungary
| | - László Kollár
- Department of Inorganic Chemistry; University of Pécs and Szentágothai Research Center; Pécs 7624 Hungary
- MTA-PTE Research Group for Selective Chemical Syntheses; 7624 Pécs Hungary
| | - István Timári
- Department of Inorganic and Analytical Chemistry; University of Debrecen; 4032 Debrecen Hungary
| | - Katalin E. Kövér
- Department of Inorganic and Analytical Chemistry; University of Debrecen; 4032 Debrecen Hungary
| | - László Drahos
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Budapest 1525 Hungary
| | - Elemér Fogassy
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
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9
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Bagi P, Ujj V, Czugler M, Fogassy E, Keglevich G. Resolution of P-stereogenic P-heterocycles via the formation of diastereomeric molecular and coordination complexes (a review). Dalton Trans 2016; 45:1823-42. [DOI: 10.1039/c5dt02999f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TADDOL derivatives and the Ca2+-salts of tartaric acid derivatives were found to be versatile and generally applicable resolving agents for the preparation of the enantiomers of P-stereogenic heterocyclic phosphine oxides and phosphinates.
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Affiliation(s)
- Péter Bagi
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | | | - Mátyás Czugler
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - Elemér Fogassy
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- 1521 Budapest
- Hungary
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10
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Ilkei V, Bana P, Tóth F, Palló A, Holczbauer T, Czugler M, Sánta Z, Dékány M, Szigetvári Á, Hazai L, Szántay C, Szántay C, Kalaus G. A simple synthesis of bannucine and 5′-epibannucine from (−)-vindoline. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.020] [Citation(s) in RCA: 4] [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: 11/28/2022]
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11
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Holczbauer T, Szabó M, Czugler M. Crystal engineering of the Drotaverin salts. Acta Crystallogr A Found Adv 2015. [DOI: 10.1107/s2053273315093249] [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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12
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Schneider G, Görbe T, Mernyák E, Wölfling J, Holczbauer T, Czugler M, Sohár P, Minorics R, Zupkó I. Synthesis of novel 17-(5'-iodo)triazolyl-3-methoxyestrane epimers via Cu(I)-catalyzed azide-alkyne cycloadditon, and an evaluation of their cytotoxic activity in vitro. Steroids 2015; 98:153-65. [PMID: 25732071 DOI: 10.1016/j.steroids.2015.02.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 02/02/2015] [Accepted: 02/19/2015] [Indexed: 11/16/2022]
Abstract
The regioselective Cu(I)-catalyzed 1,3-dipolar cycloaddition of 3-methoxyestrane 17α- and 17β-azide epimers (3 and 5) with different terminal alkynes afforded novel 1,4-substituted triazolyl derivatives (8a-f and 11a-f). If the Ph3P in the classical CuAAC process was replaced by Et3N, the formation of small quantities of 5-iodotriazoles (9a-f and 11a-f) was observed. For the preparation of 5-iodo-1,2,3-triazoles (9a-f and 11a-f), an improved method was developed, directly from steroidal azides and terminal alkynes, in reactions mediated by CuI and ICl as iodinating agents. The antiproliferative activities of the structurally related triazoles were determined in vitro with the microculture tetrazolium assay on six malignant human cell lines of gynecological origin (HeLa, A2780, MCF7, MDA-MB-231, MDA-MB-361 and T47D). X-ray analysis revealed the presence of the iodo substituent on the 1,2,3-triazole ring.
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Affiliation(s)
- Gyula Schneider
- Department of Organic Chemistry, University of Szeged, Dóm tér 8., H-6720 Szeged, Hungary.
| | - Tamás Görbe
- Department of Organic Chemistry, University of Szeged, Dóm tér 8., H-6720 Szeged, Hungary
| | - Erzsébet Mernyák
- Department of Organic Chemistry, University of Szeged, Dóm tér 8., H-6720 Szeged, Hungary
| | - János Wölfling
- Department of Organic Chemistry, University of Szeged, Dóm tér 8., H-6720 Szeged, Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry, Research Center of Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary
| | - Mátyás Czugler
- Institute of Organic Chemistry, Research Center of Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary
| | - Pál Sohár
- Institute of Chemistry, Eötvös Lóránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Renáta Minorics
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u.6, H-6720 Szeged, Hungary
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u.6, H-6720 Szeged, Hungary.
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13
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Kovács T, Fülöp LS, Mucsi Z, Karaghiosoff K, Czugler M, Keglevich G. Revisiting the 7-Phospanorbornene Family: New P-Alkyl Derivatives. Heteroatom Chem 2015. [DOI: 10.1002/hc.21265] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tamara Kovács
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - Laura Sz. Fülöp
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - Zoltán Mucsi
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | | | - Mátyás Czugler
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest 1521 Hungary
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14
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Faigl F, Deák SZ, Erdélyi ZS, Holczbauer T, Czugler M, Nyerges M, Mátravölgyi B. New Atropisomeric Amino Alcohol Ligands for Enantioselective Addition of Diethylzinc to Aldehydes. Chirality 2014; 27:216-22. [DOI: 10.1002/chir.22415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/29/2014] [Accepted: 10/31/2014] [Indexed: 11/10/2022]
Affiliation(s)
- F. Faigl
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
- MTA-BME Organic Chemical Technology Research Group; Hungarian Academy of Sciences; Budapest Hungary
| | - SZ. Deák
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
| | - ZS. Erdélyi
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
| | - T. Holczbauer
- Institute of Structural Chemistry; Hungarian Academy of Sciences; Budapest Hungary
| | - M. Czugler
- Institute of Structural Chemistry; Hungarian Academy of Sciences; Budapest Hungary
| | - M. Nyerges
- Servier Research Institute of Medicinal Chemistry; Budapest Hungary
| | - B. Mátravölgyi
- MTA-BME Organic Chemical Technology Research Group; Hungarian Academy of Sciences; Budapest Hungary
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15
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Bagi P, Fekete A, Kállay M, Hessz D, Kubinyi M, Holczbauer T, Czugler M, Fogassy E, Keglevich G. A Case Study on the Resolution of the 1-i-Butyl-3-methyl-3-phospholene 1-Oxide via Diastereomeric Complex Formation Using TADDOL Derivatives and via Diastereomeric Coordination Complexes Formed from the Calcium Salts ofO,O′-Diaroyl-(2R,3R)-tartaric Acids. Heteroatom Chem 2014. [DOI: 10.1002/hc.21218] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Péter Bagi
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; 1521 Budapest Hungary
| | - András Fekete
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; 1521 Budapest Hungary
| | - Mihály Kállay
- MTA-BME Lendület Quantum Chemistry Research Group, Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; 1521 Budapest Hungary
- Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; 1521 Budapest Hungary
| | - Dóra Hessz
- Institute of Materials and Environmental Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; 1519 Budapest Hungary
| | - Miklós Kubinyi
- Department of Physical Chemistry and Materials Science; Budapest University of Technology and Economics; 1521 Budapest Hungary
- Institute of Materials and Environmental Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; 1519 Budapest Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; 1519 Budapest Hungary
| | - Mátyás Czugler
- Institute of Organic Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; 1519 Budapest Hungary
| | - Elemér Fogassy
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; 1521 Budapest Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; 1521 Budapest Hungary
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16
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Bagi P, Fekete A, Kállay M, Hessz D, Kubinyi M, Holczbauer T, Czugler M, Fogassy E, Keglevich G. Resolution of 1-n-butyl-3-methyl-3-phospholene 1-oxide with TADDOL derivatives and calcium salts of O,O'-Dibenzoyl-(2R,3R)- or O,O'-di-p-toluoyl-(2R,3R)-tartaric acid. Chirality 2014; 26:174-82. [PMID: 24510520 DOI: 10.1002/chir.22293] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 11/27/2013] [Accepted: 12/09/2013] [Indexed: 11/06/2022]
Abstract
The resolution methods applying (-)-(4R,5R)-4,5-bis(diphenylhydroxymethyl)-2,2-dimethyldioxolane ("TADDOL"), (-)-(2R,3R)-α,α,α',α'-tetraphenyl-1,4-dioxaspiro[4.5]decan-2,3-dimethanol ("spiro-TADDOL"), as well as the acidic and neutral Ca(2+) salts of (-)-O,O'-dibenzoyl- and (-)-O,O'-di-p-toluoyl-(2R,3R)-tartaric acid were extended for the preparation of 1-n-butyl-3-methyl-3-phospholene 1-oxide in optically active form. In one case, the intermediate diastereomeric complex could be identified by single-crystal X-ray analysis. The absolute P-configuration of the enantiomers of the phospholene oxide was also determined by comparing the experimentally obtained and calculated CD spectra.
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Affiliation(s)
- Péter Bagi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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17
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Bagi P, Kállay M, Hessz D, Kubinyi M, Holczbauer T, Czugler M, Fogassy E, Keglevich G. Resolution of 1-n-propoxy-3-methyl-3-phospholene 1-oxide by diastereomeric complex formation using TADDOL derivatives and calcium salts of O,O′-dibenzoyl-(2R,3R)- or O,O′-di-p-toluoyl-(2R,3R)-tartaric acid. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.01.002] [Citation(s) in RCA: 7] [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: 10/25/2022]
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18
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Kiss K, Kocsis VL, Holczbauer T, Czugler M, Silaghi-Dumitrescu L, Csámpai A. 2-Arylideneferroceno[e]cyclohexanones and related 3-aryl-3,3a,4,5-tetrahydroferroceno[g]indazoles: Synthesis, NMR-, DFT- and X-ray analysis. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2012.11.039] [Citation(s) in RCA: 4] [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: 11/30/2022]
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19
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Faigl F, Kovács E, Turczel G, Szöllősy Á, Mordini A, Balázs L, Holczbauer T, Czugler M. Novel stereoselective synthesis of 1,2,3-trisubstituted azetidines. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.10.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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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20
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Bálint E, Fazekas E, Pongrácz P, Kollár L, Drahos L, Holczbauer T, Czugler M, Keglevich G. N-Benzyl and N-aryl bis(phospha-Mannich adducts): Synthesis and catalytic activity of the related bidentate chelate platinum complexes in hydroformylation. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.07.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Kiss K, Holczbauer T, Czugler M, Sohár P, Bodor A, Csámpai A. Synthesis, IR-, NMR-, DFT- and X-ray analysis of novel C2-chiral diferrocenyl–salen complexes. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.01.024] [Citation(s) in RCA: 3] [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: 11/29/2022]
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22
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Faigl F, Mátravölgyi B, Deák S, Holczbauer T, Czugler M, Balázs L, Hermecz I. Useful, regioflexible methods for functionalization of 1-phenylpyrrole derivatives. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Faigl F, Mátravölgyi B, Szöllősy Á, Czugler M, Tárkányi G, Vékey K, Kubinyi M. Synthesis of atropisomeric 1-phenylpyrrole-derived amino alcohols: New chiral ligands. Chirality 2012; 24:532-42. [DOI: 10.1002/chir.22049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 03/11/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Ferenc Faigl
- Department of Organic Chemistry and Technology; Budapest University of Technology and Economics; Budapest Hungary
- Research Group for Organic Chemical Technology; Hungarian Academy of Sciences; Budapest Hungary
| | - Béla Mátravölgyi
- Research Group for Organic Chemical Technology; Hungarian Academy of Sciences; Budapest Hungary
| | - Áron Szöllősy
- Department of General and Analytical Chemistry; Budapest University of Technology and Economics; Budapest Hungary
| | - Mátyás Czugler
- Institute of Organic Chemistry, Research Center for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - Gábor Tárkányi
- Institute of Organic Chemistry, Research Center for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - Károly Vékey
- Institute of Organic Chemistry, Research Center for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
| | - Miklós Kubinyi
- Institute of Molecular Pharmacology, Research Center for Natural Sciences; Hungarian Academy of Sciences; Budapest Hungary
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24
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Sipos S, Jablonkai I, Egyed O, Czugler M. Preparation of 2-amino-2-C-glycosyl-acetonitriles from C-glycosyl aldehydes by Strecker reaction. Carbohydr Res 2011; 346:2862-71. [PMID: 22082510 DOI: 10.1016/j.carres.2011.10.023] [Citation(s) in RCA: 3] [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] [Received: 05/23/2011] [Revised: 10/13/2011] [Accepted: 10/14/2011] [Indexed: 10/16/2022]
Abstract
Synthesis of new 2-amino-2-C-D-glycosyl-acetonitriles in a Strecker reaction from various C-glycosyl aldehydes, chiral amines, and HCN was carried out. While aminonitriles from glycal and 2-deoxy-β-D-glycosyl aldehydes were prepared in satisfactory yields, lower yields were obtained with C-glycosyl aldehydes. Strecker reaction with the benzyl-protected 1-C-formyl-D-galactal and S- or R-1-phenylethylamine (S-PEA or R-PEA) yielded predominantly the R-configured C-glycosyl aminoacetonitrile. The direction of the nucleophilic addition appears to be governed by the configuration of the anomeric carbon with β-linked sugars. Since the stereochemistry of the transition state is unknown according to the configuration of the major product a Felkin-Ahn selectivity can be mainly presumed.
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Affiliation(s)
- Szabolcs Sipos
- Institute of Biomolecular Chemistry, Chemical Research Center, Hungarian Academy of Sciences, PO Box 17, 1525 Budapest, Hungary
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25
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Varga S, Jakab G, Drahos L, Holczbauer T, Czugler M, Soós T. Double Diastereocontrol in Bifunctional Thiourea Organocatalysis: Iterative Michael–Michael–Henry Sequence Regulated by the Configuration of Chiral Catalysts. Org Lett 2011; 13:5416-9. [DOI: 10.1021/ol201559j] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Szilárd Varga
- Institute of Biomolecular Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary, and Institute of Structural Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary
| | - Gergely Jakab
- Institute of Biomolecular Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary, and Institute of Structural Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary
| | - László Drahos
- Institute of Biomolecular Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary, and Institute of Structural Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary
| | - Tamás Holczbauer
- Institute of Biomolecular Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary, and Institute of Structural Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary
| | - Mátyás Czugler
- Institute of Biomolecular Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary, and Institute of Structural Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary
| | - Tibor Soós
- Institute of Biomolecular Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary, and Institute of Structural Chemistry, Chemical Research Center of Hungarian Academy of Sciences, P.O. Box 17, 1525 Budapest, Hungary
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26
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Czugler M, Pintér I. Sodium halide complexes of ribose derivatives and their unusual crystal structures. Carbohydr Res 2011; 346:1610-6. [DOI: 10.1016/j.carres.2011.03.014] [Citation(s) in RCA: 7] [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] [Received: 01/31/2011] [Revised: 03/07/2011] [Accepted: 03/08/2011] [Indexed: 11/24/2022]
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Cora I, Czugler M, Dódony I, Rečnik A. On the symmetry of wulfenite (Pb[MoO4]) from Mežica (Slovenia). Acta Crystallogr C 2011; 67:i33-5. [DOI: 10.1107/s0108270111015769] [Citation(s) in RCA: 4] [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] [Received: 01/31/2011] [Accepted: 04/26/2011] [Indexed: 11/10/2022] Open
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28
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Gyömöre Á, Csámpai A, Holzbauer T, Czugler M. Study on medium ring heterocycles: synthesis and structure of novel condensed pyrazolo[1,4]diazocinones including single enantiomers. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.02.034] [Citation(s) in RCA: 6] [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: 11/25/2022]
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29
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Faigl F, Vas-Feldhoffer B, Kudar V, Czugler M, Pál K, Kubinyi M. Synthesis and optical resolution of 1-[(3-carboxy-1,1′-biphenyl)-2-yl]-1H-pyrrole-2-carboxylic acid. Chirality 2009. [DOI: 10.1002/chir.20686] [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: 11/08/2022]
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30
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Holczbauer T, Németh C, Pfeifer É, Mink J, Kerényi A, Keglevich G, Czugler M. Molecular association in the dichloridobis(2-methoxydibenzo[ c, e]-[1,2]oxaphosphorine-κ P)platinum(II):trichloromethane 1:1 solvate. Acta Crystallogr A 2009. [DOI: 10.1107/s0108767309094604] [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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31
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Czugler M, Kudar V. Supramolecular chemistry of Reinecke salt derivatives. Acta Crystallogr A 2009. [DOI: 10.1107/s0108767309094586] [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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32
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Holczbauer T, Keglevich G, Kerényi A, Czugler M. Dichloridobis(2-methoxy-dibenzo[c,e][1,2]oxaphospho-rine-κP)platinum(II) trichloro-methane solvate. Acta Crystallogr Sect E Struct Rep Online 2009; 65:m347-8. [PMID: 21582112 PMCID: PMC2968428 DOI: 10.1107/s1600536809006643] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2009] [Accepted: 02/23/2009] [Indexed: 11/21/2022]
Abstract
The title compound, [PtCl2(C13H11O2P)2]·CHCl3, has a rare PtCl2 bridging of two dibenzooxaphosphorine ligands through the metal atom. The PtII ion is in a slightly distorted square-planar environment. The trichloromethane solvent molecule shows rotational disorder (major occupancy is 0.75) and is placed near to the inversion centre at (1/2, 1/2, 0) in channels parallel to the a axis. The solvent molecule is linked to the complex molecule via intermolecular bifurcated C—H⋯Cl and C—H⋯O hydrogen bonds. The crystal structure is further stabilized by π–π interactions involving the benzene rings, with a centroid–centroid distance of 3.658 (8) Å.
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33
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Faigl F, Vas-Feldhoffer B, Kubinyi M, Pál K, Tárkányi G, Czugler M. Efficient synthesis of optically active 1-(2-carboxymethyl-6-ethylphenyl)-1H-pyrrole-2-carboxylic acid: a novel atropisomeric 1-arylpyrrole derivative. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.01.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Novak T, Schindler J, Ujj V, Czugler M, Fogassy E, Keglevich G. Chiral P-Heterocycles: Efficient Method for the Resolution of 3-Methyl-3-phospholene 1-Oxides. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500701764890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Tibor Novak
- a Research Group of the Hungarian Academy of Sciences at the Department of Organic Chemical Technology , Budapest University of Technology and Economics , Budapest, Hungary
| | - József Schindler
- a Research Group of the Hungarian Academy of Sciences at the Department of Organic Chemical Technology , Budapest University of Technology and Economics , Budapest, Hungary
| | - Viktória Ujj
- b Department of Organic Chemical Technology , Budapest University of Technology and Economics , Budapest, Hungary
| | - Mátyás Czugler
- c Hungarian Academy of Sciences, Chemical Research Center , Budapest, Hungary
| | - Elemér Fogassy
- b Department of Organic Chemical Technology , Budapest University of Technology and Economics , Budapest, Hungary
| | - György Keglevich
- b Department of Organic Chemical Technology , Budapest University of Technology and Economics , Budapest, Hungary
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Erdélyi P, Fodor T, Varga ÁK, Czugler M, Gere A, Fischer J. Chemical and biological investigation of N-hydroxy-valdecoxib: An active metabolite of valdecoxib. Bioorg Med Chem 2008; 16:5322-30. [DOI: 10.1016/j.bmc.2008.02.088] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2007] [Revised: 02/25/2008] [Accepted: 02/28/2008] [Indexed: 02/02/2023]
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36
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Filák L, Riedl Z, Egyed O, Czugler M, Hoang CN, Schantl JG, Hajós G. A new synthesis of the linearly fused [1,2,4]triazolo[1,5-b]isoquinoline ring. Observation of an unexpected Dimroth rearrangement. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.10.103] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Charge flipping (CF) is an amazingly simple structure solution method that uses single-crystal X-ray diffraction data. It is truly ab initio, no preliminary information on atom types, chemical composition, or space group symmetry is required. The algorithm is iterative and alternates between real and reciprocal spaces. Its simplest version only changes (flips) the sign of the electron density below a threshold, while in reciprocal space, it prescribes the moduli of observed structure factors. In this communication, we apply the algorithm in practice. The selected example presents a whole range of difficulties: it is large, contains only light atoms, is noncentrosymmetric, and shows a particularly awkward pseudosymmetry. To solve it with any of the traditional methods requires many hours of computer time, followed by a day of expert's handwork to find missing and to remove spurious atoms. In contrast, the CF algorithm provides the complete structure in a few seconds and without human intervention. It is also remarkable that the success rate is 100%, that is, any starting point in the high-dimensional phase space leads to the solution. The treatment of translational pseudosymmetry is obviously a favorable case. Similar resistant structures with pseudosymmetries or ambiguous space groups are the practical applications where the CF method could well complement standard software procedures.
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Affiliation(s)
- Gábor Oszlányi
- Research Institute for Solid State Physics and Optics, H-1525 Budapest POB. 49, Hungary.
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38
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Frank E, Körtvélyesi T, Czugler M, Mucsi Z, Keglevich G. New steroid-fused P-heterocycles. Part I. Synthesis and conformational study of dioxaphosphorino[16,17-d]estrone derivatives. Steroids 2007; 72:437-45. [PMID: 17383699 DOI: 10.1016/j.steroids.2007.02.002] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2006] [Revised: 01/19/2007] [Accepted: 02/02/2007] [Indexed: 10/23/2022]
Abstract
D-ring-fused dioxaphosphorinanes (4-6) in the estrone series were synthetized as epimeric pairs and investigated by NMR and computational methods in order to determine their stereostructures and predominant conformations. The study was performed to evaluate the influence of the rigid sterane framework on the geometry of the condensed hetero ring, with regard to the possible steric effect of the angular methyl group at position 13. Additionally, the steric and electronic effects of the P-substituents on the conformational equilibrium were examined. The distorted-boat conformation of the hetero ring of dioxaphosphorinoestrone 3-methyl ether 4a was confirmed by single-crystal X-ray analysis. This is in good agreement with the observation in solution that, in the case of the boat conformation, the anisotropic shielding effect of the phenyl group of cyclic phosphonate 4a generates an upfield shift for 17-H, as compared with the corresponding chemical shift for epimer 4b. A similar boat conformation was substantiated for derivatives 4b, 5a, 5b and 6b on the basis of the J(H, H) and J(H, P) coupling constants and also ab initio calculations, regardless of the P-configuration. At the same time, the hetero ring of 6a seems to tilt towards a chair-like conformation due to the strong equatorial preference of the N-bis(2-chloroethyl) group.
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Affiliation(s)
- Eva Frank
- Department of Organic Chemistry, University of Szeged, Dóm tér 8., H-6720 Szeged, Hungary.
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39
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Affiliation(s)
- Edwin Weber
- a Institut für Organische Chemie , Technische Universität Bergakademie Freiberg , Leipziger Str. 29, D-09596, Freiberg/Sachs, Germany
| | - Petros P. Korkas
- a Institut für Organische Chemie , Technische Universität Bergakademie Freiberg , Leipziger Str. 29, D-09596, Freiberg/Sachs, Germany
| | - Mátyás Czugler
- b Institute of Chemistry, Chemical Research Center , Hungarian Academy of Sciences , P.O.Box, 17, H-1525, Budapest, Hungary
| | - Wilhelm Seichter
- a Institut für Organische Chemie , Technische Universität Bergakademie Freiberg , Leipziger Str. 29, D-09596, Freiberg/Sachs, Germany
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40
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Czugler M, Körtvélyesi T, Fábián L, Sipos M, Keglevich G. Intra- and intermolecular interactions and water pincer in the crystal structure of a 3-P(O)Ph2substituted 1,2,3,6-tetrahydrophosphinine oxide hydrate. CrystEngComm 2007. [DOI: 10.1039/b702137b] [Citation(s) in RCA: 8] [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: 11/21/2022]
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41
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Fébián L, Bombicz P, Czugler M, Kálmán A, Weber E, Hecker M. Clathrate Engineering of Piedfort Hosts. Crystal Structures and Molecular Modeling of the para-mono- and meta-di-methy1/t-buty1 Substituted Derivatives of 2,4,6-tris (alkylphenoxy)-1,3,5-triazine. Supramol Chem 2006. [DOI: 10.1080/10610279908048726] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- László Fébián
- a Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences , H-1525, Budapest, P.O. Box 17, Hungary
| | - Petra Bombicz
- a Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences , H-1525, Budapest, P.O. Box 17, Hungary
| | - Mátyás Czugler
- a Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences , H-1525, Budapest, P.O. Box 17, Hungary
| | - Alajos Kálmán
- a Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences , H-1525, Budapest, P.O. Box 17, Hungary
| | - Edwin Weber
- b Technische Universität Bergakademie Freiberg, Institut für Organische Chemie , Leipziger Str. 29, D-09596, Freiberg/Sachs., Germany
| | - Manfred Hecker
- b Technische Universität Bergakademie Freiberg, Institut für Organische Chemie , Leipziger Str. 29, D-09596, Freiberg/Sachs., Germany
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Novák T, Schindler J, Ujj V, Czugler M, Fogassy E, Keglevich G. Resolution of 3-methyl-3-phospholene 1-oxides by molecular complex formation with TADDOL derivatives. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.09.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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43
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Czugler M. Long distances, weak interactions? Acta Crystallogr A 2006. [DOI: 10.1107/s0108767306098539] [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: 11/11/2022] Open
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44
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Báthori N, Czugler M, Bombicz P, Kálmán A. Non crystallographic rotations observed between four o-halogen substituted tris-phenoxy-1,3,5-triazine derivatives. Acta Crystallogr A 2006. [DOI: 10.1107/s0108767306096711] [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: 11/11/2022] Open
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Czugler M, Weber E, Kálmán A, Stensland B, Párkányi L. Doppelschichtbildung mit einem Tensidkronenether-Komplex: Kristallstruktur von 15,15-Bis(dodecyloxymethyl)[16]krone-5·NaSCN. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.19820940819] [Citation(s) in RCA: 8] [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: 11/09/2022]
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46
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Csöregh I, Czugler M, Weber E. Versatile packing modes of 9-substituted 9-fluorenols. X-ray crystal structures of 9-methyl-, 9-phenyl-, 9-(1-naphthyl)- and 9-(2-biphenylyl)fluoren-9-ol. J PHYS ORG CHEM 2004. [DOI: 10.1002/poc.610060308] [Citation(s) in RCA: 13] [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: 11/11/2022]
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49
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Czugler M. Symmetry and asymmetry in the associations of molecular crystals. Acta Crystallogr A 2004. [DOI: 10.1107/s0108767304098666] [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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Báthori N, Bihátsi L, Bombicz P, Czugler M. Engineering and synthesis of silyl-substituted molecular crystals of three-fold symmetry. Acta Crystallogr A 2004. [DOI: 10.1107/s0108767304095790] [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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