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Hetmańczyk J, Hetmańczyk Ł, Nowicka-Scheibe J, Pawlukojć A, Maurin JK, Budzianowski A, Schilf W. Investigation of hydrogen bonds in proton transfer complexes derived from the reaction of 2- and 4-(N,N-dimethylamino)pyridines with chloranilic acid. Spectrochim Acta A Mol Biomol Spectrosc 2024; 315:124241. [PMID: 38581723 DOI: 10.1016/j.saa.2024.124241] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 02/28/2024] [Accepted: 04/01/2024] [Indexed: 04/08/2024]
Abstract
New complexes of 2-(N,N-dimethylamino)pyridine with chloranilic acid (2-DMAP + CLA) and 4-(N,N-dimethylamino)pyridine with chloranilic acid (4-DMAP + CLA) were synthesized and characterized by single crystal X-ray diffraction, infrared spectroscopy, thermal analysis methods and 1H, 13C and 15N NMR spectroscopy. The NMR spectroscopies were carried out in both, DMSO solution and in the solid state (CPMAS NMR). The 2-DMAP + CLA and 4-DMAP + CLA complexes crystallize in centrosymmetric P-1 and P21/c space group, respectively. In both complexes, the phenomenon of proton transfer is observed, which results in the formation of strong N+-H···O- hydrogen bonds. Thermal decompositions of 2-DMAP + CLA and 4-DMAP + CLA complexes were studied by thermogravimetric analysis. Temperature dependent IR spectra revealed that methyl groups of 4-DMAP + CLA perform fast stochastic reorientational motion at room temperature which is slowed on cooling while in 2-DMAP + CLA reonrientational motion of CH3 groups is much slower due to steric effects.
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Affiliation(s)
- J Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 Str., 30-387 Cracow, Poland
| | - Ł Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 Str., 30-387 Cracow, Poland.
| | - J Nowicka-Scheibe
- Department of Organic and Physical Chemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Piastów Ave. 42, 71-065 Szczecin, Poland
| | - A Pawlukojć
- Institute of Nuclear Chemistry and Technology, Dorodna 16 Str., 03-195 Warsaw, Poland
| | - J K Maurin
- Falsified Medicines and Medical Devices Department, National Medicines Institute, Chełmska 30/34 Str., 00-725 Warsaw, Poland
| | - A Budzianowski
- National Centre for Nuclear Research, Sołtana 7 Str., 05-400 Otwock, Poland
| | - W Schilf
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44, 01-224 Warsaw, Poland
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2
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Deconinck E, Raimondo M, Borioni A, Grange Y, Rebière H, Mihailova A, Bøyum O, Maurin JK, Pioruńska-Sędłak K, Olsen LS, Acevska J, Brezovska K, Rundlöf T, Portela MJ, Meieranz S, Miquel M, Bertrand M. Clustering of Tadalafil API Samples According to their Manufacturer in the Context of API Falsification Detection. J Pharm Sci 2023; 112:2834-2842. [PMID: 37220827 DOI: 10.1016/j.xphs.2023.05.015] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/17/2023] [Accepted: 05/17/2023] [Indexed: 05/25/2023]
Abstract
This paper reports the results of the active pharmaceutical ingredient (API) fingerprint study, organised by the General European Official Medicines Control Laboratory Network (GEON), on tadalafil. A classical market surveillance study, evaluating compliance to the European Pharmacopoeia, was combined with a fingerprint study, the latter to obtain characteristic data for the different manufacturers, allowing the network laboratories to conduct authenticity tests for future samples, as well as to detect substandard and falsified samples. In total, 46 tadalafil API samples from 13 different manufacturers were collected. For all samples fingerprint data was collected through analysis of impurities and residual solvents, mass spectrometric screening, X-ray powder diffraction and proton nuclear magnetic resonance (1H-NMR). Chemometric analysis revealed that all manufacturers could be characterised based on the impurity, residual solvent and 1H-NMR data. Future suspicious samples in the network will therefore be analysed with these techniques in order to attribute the sample to one of the manufacturers. If the sample cannot be attributed, a more profound investigation will be necessary to reveal the origin of the sample. In cases where the suspect sample is claimed to be from one of the manufacturers included in this study, analysis can be limited to the test distinguishing that manufacturer.
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Affiliation(s)
- E Deconinck
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, J. Wytsmanstraat 14, B-1050, Brussels, Belgium.
| | - M Raimondo
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; Istituto Superiore di Sanità, National Centre for the Control and Evaluation of Medicines, Chemical Medicines Unit, viale Regina Elena 299, 00161, Rome, Italy
| | - A Borioni
- Istituto Superiore di Sanità, National Centre for the Control and Evaluation of Medicines, Chemical Medicines Unit, viale Regina Elena 299, 00161, Rome, Italy
| | - Y Grange
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; French National Agency for Medicines and Health Products Safety (ANSM), Laboratory Controls Division, 635 Rue de la Garenne, F-34740, Vendargues, France
| | - H Rebière
- French National Agency for Medicines and Health Products Safety (ANSM), Laboratory Controls Division, 635 Rue de la Garenne, F-34740, Vendargues, France
| | - A Mihailova
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; Norwegian Medicines Agency, Grensesvingen 26, NO-0663, Oslo, Norway
| | - O Bøyum
- Norwegian Medicines Agency, Grensesvingen 26, NO-0663, Oslo, Norway
| | - J K Maurin
- National Medicines Institute, 30/34 Chelmska str., 00-725, Warsaw, Poland
| | - K Pioruńska-Sędłak
- National Medicines Institute, 30/34 Chelmska str., 00-725, Warsaw, Poland
| | - L Stengelshøj Olsen
- Danish Medicines Agency, Medicines Control and Inspection Division, Axel Heides Gade 1, 2300, Copenhagen S, Denmark
| | - J Acevska
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; Center for Drug Quality Control, Institute of applied chemistry and pharmaceutical analysis, Faculty of Pharmacy, University Ss. Cyril and Methodius, Majka Tereza 47, POB 36, 1000, Skopje, Republic of North Macedonia
| | - K Brezovska
- Center for Drug Quality Control, Institute of applied chemistry and pharmaceutical analysis, Faculty of Pharmacy, University Ss. Cyril and Methodius, Majka Tereza 47, POB 36, 1000, Skopje, Republic of North Macedonia
| | - T Rundlöf
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; Swedish Medical Products Agency, Laboratory, Box 26, Dag Hammarskjölds väg 42, SE-751 03, Uppsala, Sweden
| | - M J Portela
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; INFARMED - Autoridade Nacional do Medicamento e Produtos de Saúde, I.P. Parque de Saúde de Lisboa - Avenida do Brasil, 53, 1749-004, Lisboa, Portugal
| | - S Meieranz
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France; Landeslabor Berlin-Brandenburg - Institut für Lebensmittel, Arzneimittel, Tierseuchen und Umwelt, Rudower Chaussee 39, 12489, Berlin, Germany
| | - M Miquel
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France
| | - M Bertrand
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 allée Kastner, CS 30026, F-67081, Strasbourg, France
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3
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Mojzych I, Zawadzka A, Kaczyńska K, Wojciechowski P, Zając D, Chotkowski M, Wiktorska K, Maurin JK, Mazur M. A tetrahydroacridine derivative and its conjugate with gold nanoparticles: promising agents for the treatment of Alzheimer's disease. Phys Chem Chem Phys 2023. [PMID: 37338271 DOI: 10.1039/d3cp00767g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
A new tetrahydroacridine derivative (CHDA) with acetylcholinesterase inhibitory properties was synthesized. Using a range of physicochemical techniques, it was shown that the compound strongly adsorbs onto the surface of planar macroscopic or nanoparticulate gold, forming a nearly full monolayer. The adsorbed CHDA molecules reveal well-defined electrochemical behavior, being irreversibly oxidized to electroactive species. The CHDA also exhibits strong fluorescence, which is effectively quenched after adsorption onto gold via a static quenching mechanism. Both CHDA and its conjugate reveal considerable inhibitory properties against acetylcholinesterase activity, which is promising from the perspective of therapeutic application in the treatment of Alzheimer's disease. Moreover, both agents appear to be non-toxic as demonstrated using in vitro studies. On the other hand, conjugation of CHDA with nanoradiogold particles (Au-198) offers new potential diagnostic perspectives in medical imaging.
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Affiliation(s)
- Ilona Mojzych
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Anna Zawadzka
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Katarzyna Kaczyńska
- Department of Respiration Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawińskiego 5, 02-106 Warsaw, Poland
| | - Piotr Wojciechowski
- Department of Respiration Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawińskiego 5, 02-106 Warsaw, Poland
| | - Dominika Zając
- Department of Respiration Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawińskiego 5, 02-106 Warsaw, Poland
| | - Maciej Chotkowski
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Katarzyna Wiktorska
- National Medicines Institute, Chełmska 30/34, 00-725, Warsaw, Poland
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 166, 02-787 Warsaw, Poland
| | - Jan K Maurin
- National Medicines Institute, Chełmska 30/34, 00-725, Warsaw, Poland
| | - Maciej Mazur
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
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4
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Betlejewska-Kielak K, Bednarek E, Budzianowski A, Michalska K, Maurin JK. Comprehensive Characterisation of the Flurbiprofen/β-Cyclodextrin Inclusion Complex Using X-ray Techniques and NMR Spectroscopy. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135450] [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: 03/29/2023]
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5
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Raza MA, Javaid K, Farwa U, Javaid A, Yaseen M, Maurin JK, Budzianowski A, Iqbal B, Ibrahim S. One Pot Efficient Synthesis of 1,3-di(Naphthalen-1-yl)Thiourea; X-Ray Structure, Hirshfeld Surface Analysis, Density Functional Theory, Molecular Docking and In-Vitro Biological Assessment. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133989] [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: 11/30/2022]
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6
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Aisha, Raza MA, Farwa U, Rashid U, Maurin JK, Budzianowski A. Synthesis, single crystal, in-silico and in-vitro assessment of the thiazolidinones. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Deconinck E, Courselle P, Raimondo M, Grange Y, Rebière H, Mihailova A, Bøyum O, Maurin JK, Pioruńska-Sędłak K, Olsen LS, Acevska J, Brezovska K, Rundlöf T, Portela MJ, Bertrand M. GEONs API fingerprint project: Selection of analytical techniques for clustering of sildenafil citrate API samples. Talanta 2021; 239:123123. [PMID: 34942486 DOI: 10.1016/j.talanta.2021.123123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 11/19/2022]
Abstract
Through its Active Pharmaceutical Ingredient Working Group (API-WG) the General European Official Medicines Control Laboratory (OMCL) Network (GEON), co-ordinated by the European Directorate for the Quality of Medicines & HealthCare (EDQM), regularly organises market surveillance studies for specific APIs for conformity to their monograph in the European Pharmacopoeia. During the past years some studies were combined with a fingerprint study of the APIs. The idea is to obtain a fingerprint for each manufacturer of the API under investigation, allowing the OMCL network to identify future samples as well as to detect substandard and falsified APIs. This paper reports the results of the latest fingerprint study, organised on sildenafil citrate API samples. Seventy-nine samples from 14 different manufacturers were collected throughout the Network. Fingerprint data was collected through Mid-Infrared spectroscopy, Raman spectroscopy, liquid chromatography for related substances, gas chromatography for residual solvents, X-ray diffraction and Nuclear Magnetic Resonance (NMR) spectroscopy. Chemometrics applied to the collected data showed that all manufacturers could be discriminated based on the data of only three of these tests, i.e. gas chromatography for residual solvents, X-ray diffraction and proton NMR. Suspicious API samples for sildenafil citrate will therefore be analysed in the future with the selected techniques in order to link the sample to a manufacturer or demonstrate the absence of such link. If the sample cannot be attributed to one of the manufacturers, further analysis and research on provenance and identity will be required. Of course, if the suspected sample claims to originate from one of the manufacturers included in the study, analysis can be limited to the test distinguishing this manufacturer.
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Affiliation(s)
- E Deconinck
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, J. Wytsmanstraat 14, B-1050, Brussels, Belgium.
| | - P Courselle
- Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, J. Wytsmanstraat 14, B-1050, Brussels, Belgium
| | - M Raimondo
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; Istituto Superiore di Sanità, National Centre for the Control and Evaluation of Medicines, Chemical Medicines Unit, Viale Regina Elena 299, 00161, Rome, Italy
| | - Y Grange
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; French National Agency for Medicines and Health Products Safety, Laboratory Controls Division, 635 Rue de la Garenne, 34740, Vendargues, France
| | - H Rebière
- French National Agency for Medicines and Health Products Safety, Laboratory Controls Division, 635 Rue de la Garenne, 34740, Vendargues, France
| | - A Mihailova
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; Norwegian Medicines Agency, Grensesvingen 26, NO-0663, Oslo, Norway
| | - O Bøyum
- Norwegian Medicines Agency, Grensesvingen 26, NO-0663, Oslo, Norway
| | - J K Maurin
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; National Medicines Institute, 30/34 Chelmska Str., 00-725, Warsaw, Poland
| | - K Pioruńska-Sędłak
- National Medicines Institute, 30/34 Chelmska Str., 00-725, Warsaw, Poland
| | - L Stengelshøj Olsen
- Danish Medicines Agency, Medicines Control and Inspection Division, Axel Heides Gade 1, 2300, Copenhagen S, Denmark
| | - J Acevska
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; Center for Drug Quality Control, Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, University Ss.Cyril and Methodius, Majka Tereza 47, POB 36, 1000, Skopje, Republic of North-Macedonia
| | - K Brezovska
- Center for Drug Quality Control, Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, University Ss.Cyril and Methodius, Majka Tereza 47, POB 36, 1000, Skopje, Republic of North-Macedonia
| | - T Rundlöf
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; Swedish Medical Products Agency, Laboratory, Box 26, Dag Hammarskjölds Väg 42, SE-751 03, Uppsala, Sweden
| | - M J Portela
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France; INFARMED, Autoridade Nacional Do Medicamento e Produtos de Saúde, I.P. Parque de Saúde de Lisboa, Avenida Do Brasil, 531749-004, Lisboa, Portugal
| | - M Bertrand
- OMCL Active Pharmaceutical Ingredient (API) Working Group, GEON Network, EDQM - Council of Europe, 7 Allée Kastner, CS 30026, F-67081, Strasbourg, France
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Molęda Z, Zawadzka A, Czarnocki Z, Monjas L, Hirsch AKH, Budzianowski A, Maurin JK. "Clicking" fragment leads to novel dual-binding cholinesterase inhibitors. Bioorg Med Chem 2021; 42:116269. [PMID: 34130217 DOI: 10.1016/j.bmc.2021.116269] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 04/15/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 11/29/2022]
Abstract
Cholinesterase inhibitors are potent therapeutics in the treatment of Alzheimer's disease. Among them, dual binding ligands have recently gained a lot of attention. We discovered novel dual-binding cholinesterase inhibitors, using "clickable" fragments, which bind to either catalytic active site (CAS) or peripheral anionic site (PAS) of the enzyme. Copper(I)-catalyzed azide-alkyne cycloaddition allowed to effectively synthesize a series of final heterodimers, and modeling and kinetic studies confirmed their ability to bind to both CAS and PAS. A potent acetylcholinesterase inhibitor with IC50 = 18 nM (compound 23g) was discovered. A target-guided approach to link fragments by the enzyme itself was tested using butyrylcholinesterase.
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Affiliation(s)
- Zuzanna Molęda
- University of Warsaw, Faculty of Chemistry, Pasteura 1, 02-093 Warsaw, Poland.
| | - Anna Zawadzka
- University of Warsaw, Faculty of Chemistry, Pasteura 1, 02-093 Warsaw, Poland
| | - Zbigniew Czarnocki
- University of Warsaw, Faculty of Chemistry, Pasteura 1, 02-093 Warsaw, Poland
| | - Leticia Monjas
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747 AG Groningen, the Netherlands
| | - Anna K H Hirsch
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Saarbrücken, Germany; Department of Pharmacy, Saarland University, Saarbrücken, Germany
| | | | - Jan K Maurin
- National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland; National Centre for Nuclear Research, 05-400 Otwock-Świerk, Poland
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9
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Betlejewska-Kielak K, Bednarek E, Budzianowski A, Michalska K, Maurin JK. Comprehensive Characterisation of the Ketoprofen-β-Cyclodextrin Inclusion Complex Using X-ray Techniques and NMR Spectroscopy. Molecules 2021; 26:molecules26134089. [PMID: 34279429 PMCID: PMC8271474 DOI: 10.3390/molecules26134089] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 11/16/2022] Open
Abstract
Racemic ketoprofen (KP) and β-cyclodextrin (β-CD) powder samples from co-precipitation (1), evaporation (2), and heating-under-reflux (3) were analysed using X-ray techniques and nuclear magnetic resonance (NMR) spectroscopy. On the basis of NMR studies carried out in an aqueous solution, it was found that in the samples obtained by methods 1 and 2, there were large excesses of β-CD in relation to KP, 10 and 75 times, respectively, while the sample obtained by method 3 contained equimolar amounts of β-CD and KP. NMR results indicated that KP/β-CD inclusion complexes were formed and the estimated binding constants were approximately 2400 M-1, showing that KP is quite strongly associated with β-CD. On the other hand, the X-ray single-crystal technique in the solid state revealed that the (S)-KP/β-CD inclusion complex with a stoichiometry of 2:2 was obtained as a result of heating-under-reflux, for which the crystal and molecular structure were examined. Among the methods used for the preparation of the KP/β-CD complex, only method 3 is suitable.
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Affiliation(s)
| | - Elżbieta Bednarek
- Falsified Medicines and Medical Devices Department, National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland; (E.B.); (J.K.M.)
| | | | - Katarzyna Michalska
- Department of Synthetic Drugs, National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland;
- Correspondence: ; Tel.: +48-(22)-841-18-88 (ext. 369)
| | - Jan K. Maurin
- Falsified Medicines and Medical Devices Department, National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland; (E.B.); (J.K.M.)
- National Centre for Nuclear Research, A. Sołtana 7, 05-400 Otwock, Poland;
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10
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Jończyk A, Maurin JK, Moreń M, Kowalkowska A. Synthesis of 2‐Aryl‐
N
‐(EWG‐methyl)‐
N
‐methylpyrrolidinium Salts as Precursors of Ylides Entering the [1,2] Stevens Rearrangement. ChemistrySelect 2021. [DOI: 10.1002/slct.202100787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Andrzej Jończyk
- Faculty of Chemistry Warsaw University of Technology Noakowskiego St. 3 00-664 Warsaw Poland
| | - Jan K. Maurin
- National Medicines Institute Chełmska St. 30/34 00-725 Warsaw Poland
- National Centre for Nuclear Research Andrzeja Sołtana St. 7 05-400 Otwock Poland
| | - Monika Moreń
- Faculty of Chemistry Warsaw University of Technology Noakowskiego St. 3 00-664 Warsaw Poland
| | - Anna Kowalkowska
- Faculty of Chemistry Warsaw University of Technology Noakowskiego St. 3 00-664 Warsaw Poland
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11
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Hetmańczyk J, Hetmańczyk Ł, Nowicka-Scheibe J, Pawlukojć A, Maurin JK, Schilf W. Structural, Thermal, and Vibrational Properties of N,N-Dimethylglycine-Chloranilic Acid-A New Co-Crystal Based on an Aliphatic Amino Acid. Materials (Basel) 2021; 14:ma14123292. [PMID: 34198707 PMCID: PMC8232199 DOI: 10.3390/ma14123292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/02/2021] [Accepted: 06/09/2021] [Indexed: 02/06/2023]
Abstract
The new complex of N,N-Dimethylglycine (DMG) with chloranilic acid (CLA) was synthesized and examined for thermal, structural, and dynamical properties. The structure of the reaction product between DMG and CLA was investigated in a deuterated dimethyl sulfoxide (DMSO-d6) solution and in the solid state by Nuclear Magnetic Resonance (NMR) (Cross Polarization Magic Angle Spinning-CPMAS NMR). The formation of the 1:1 complex of CLA and DMG in the DMSO solution was also confirmed by diffusion measurement. X-ray single crystal diffraction results revealed that the N,N-dimethylglycine–chloranilic acid (DMG+–CLA−) complex crystallizes in the centrosymmetric triclinic P-1 space group. The X-ray diffraction and NMR spectroscopy show the presence of the protonated form of N,N-dimethylglycine and the deprotonated form of chloranilic acid molecules. The vibrational properties of the co-crystal were investigated by the use of neutron (INS), infrared (IR), and Raman (RS) spectroscopies, as well as the density functional theory (DFT) with periodic boundary conditions. From the band shape analysis of the N–CH3 bending vibration, we can conclude that the CH3 groups perform fast (τR ≈ 10−11 to 10‒13 s) reorientational motions down to a temperature of 140 K, with activation energy at ca. 6.7 kJ mol−1. X-ray diffraction and IR investigations confirm the presence of a strong N+–H···O− hydrogen bond in the studied co-crystal.
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Affiliation(s)
- Joanna Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 Str., 30-387 Cracow, Poland;
- Correspondence: ; Tel.: +48-12-686-24-31
| | - Łukasz Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 Str., 30-387 Cracow, Poland;
| | - Joanna Nowicka-Scheibe
- Department of Organic and Physical Chemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Piastów Ave. 42, 71-065 Szczecin, Poland;
| | - Andrzej Pawlukojć
- Institute of Nuclear Chemistry and Technology, Dorodna 16 Str., 03-195 Warsaw, Poland;
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141-980 Dubna, Russia
| | - Jan K. Maurin
- National Medicines Institute, Chełmska 30/34 Str., 00-725 Warsaw, Poland;
- National Centre for Nuclear Research, Sołtana 7 Str., 05-400 Otwock, Poland
| | - Wojciech Schilf
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44, 01-224 Warsaw, Poland;
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Aisha, Raza MA, Sumrra SH, Javed K, Saqib Z, Maurin JK, Budzianowski A. Synthesis, characterization and molecular modeling of amino derived thiazolidinones as esterase and glucosidase inhibitors. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128609] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Raza MA, Fatima K, Saqib Z, Maurin JK, Budzianowski A. Designing of diamino based esterases inhibitors; synthesis, characterization, density functional theory and molecular modeling. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.06.021] [Citation(s) in RCA: 7] [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: 10/26/2022]
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14
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Pomarański P, Roszkowski P, Maurin JK, Czarnocki Z. Regio-and atropselective synthesis of selected ortho-phenyl substituted arylpyridine derivatives. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Pomarański P, Roszkowski P, Maurin JK, Budzianowski A, Czarnocki Z. Some mechanistic aspects regarding the Suzuki-Miyaura reaction between selected ortho-substituted phenylboronic acids and 3,4,5-tribromo-2,6-dimethylpyridine. Beilstein J Org Chem 2018; 14:2384-2393. [PMID: 30254703 PMCID: PMC6142784 DOI: 10.3762/bjoc.14.214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 04/27/2018] [Accepted: 08/24/2018] [Indexed: 11/23/2022] Open
Abstract
Background: Atropisomers are very interesting stereoisomers having axial chirality resulting from restricted rotation around single bonds and are found in various classes of compounds. ortho-Substituted arylpyridines are an important group of them. A regio- and atropselective Suzuki–Miyaura cross-coupling reaction on 3,4,5-tribromo-2,6-dimethylpyridine was studied. Results: Reactions with various amounts of ortho-substituted phenylboronic acids with 3,4,5-tribromo-2,6-dimethylpyridine gave a series of mono- di- and triarylpyridine derivatives which allowed to draw conclusions about the order of substitution. Also, the observed selectivity in the case of ortho-methoxyphenylboronic acid suggested an additional metal O-chelation effect in the transition state, apparently not present in the ortho-chloro analogues. The rotational barrier in selected atropisomers was determined on the basis of HT NMR and thermal epimerisation experiments. The structure of most presented atropisomeric derivatives of 2,6-dimethylpyridine was confirmed by single-crystal X-ray analysis. Racemic chiral, differently substituted atropisomers were also examined by 1H NMR spectroscopy in the presence of a chiral solvating agent. Conclusion: This regio- and atropselectivity may be generally applicable to other arylpyridine systems. A regio- and atropselective Suzuki–Miyaura cross-coupling process has been observed, giving an efficient access to a class of atropisomeric compounds. An opposite selectivity using a differently ortho-substituted phenylbornic acid was observed.
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Affiliation(s)
- Piotr Pomarański
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Piotr Roszkowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Jan K Maurin
- National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland.,National Centre for Nuclear Research, 05-400 Otwock-Świerk, Poland
| | | | - Zbigniew Czarnocki
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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16
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Hetmańczyk J, Nowicka-Scheibe J, Maurin JK, Pawlukojć A. Low temperature investigations of dynamic properties in l-leucine - chloranilic acid complex. Spectrochim Acta A Mol Biomol Spectrosc 2018; 200:281-289. [PMID: 29702418 DOI: 10.1016/j.saa.2018.03.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 03/20/2018] [Accepted: 03/25/2018] [Indexed: 06/08/2023]
Abstract
Inelastic neutron scattering (INS) and infra-red (IR) spectroscopy methods were used for determination of dynamic structure of l-leucine - chloranilic acid complex. A theoretical dynamic pattern calculated by the density functional theory (DFT) method for periodic boundary conditions accompanied the experimental ones. Normal modes in the vibrational spectra were defined and described. The characteristic presence of the Hadži's trio enriched by numerous submaxima is observed in the wavenumber range 3200-800 cm-1. Bands assigned to CH3 torsion vibrations in the leucine cation were observed at 231 cm-1 and 258 cm-1 in the INS spectrum. Temperature-dependent far-infrared spectra in the temperature range 9 K-290 K were obtained. Vibrational bands were analyzed as a function of temperature. Activation energies for reorientational motion of CH3 and CH2 groups were determined by means of the band shape analysis performed for torsional and twisting vibrations of these groups. The estimated energy is equal to Ea = 2.7 ± 0.2 kJ/mol and Ea = 2.17 ± 0.12 kJ/mol for CH3 and CH2 groups, respectively. A phase transition at about 130 K in the l-leucine - chloranilic acid complex was observed.
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Affiliation(s)
- J Hetmańczyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2 str., 30-387 Cracow, Poland
| | - J Nowicka-Scheibe
- Faculty of Chemical Technology and Engineering, Institute of Chemistry and Environmental Protection, West Pomeranian University of Technology, Al. Piastów 42, 71-065 Szczecin, Poland
| | - J K Maurin
- National Medicines Institute, Chełmska 30/34 str., 00-725 Warsaw, Poland; National Centre for Nuclear Research, Sołtana 7, 05-400 Otwock, Poland
| | - A Pawlukojć
- Institute of Nuclear Chemistry and Technology, Dorodna 16 str., 03-195 Warszawa, Poland; Joint Institute for Nuclear Research, 141-980 Dubna, Russia.
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Abstract
A novel domino reaction featuring a Michael addition/[1,2]-Stevens rearrangement reaction of pyrrolidinium ylides with electrophilic alkenes is described. Ylides generated under mild conditions from 2-aryl- N-cyanomethyl- N-methylpyrrolidinium salts entered the Michael addition, followed by a [1,3]-hydrogen shift and finally the [1,2]-Stevens rearrangement to give 3-aryl-2-cyano-2-(2-EWG-ethyl)-1-methylpiperidines.
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Affiliation(s)
- Anna Kowalkowska
- Faculty of Chemistry , Warsaw University of Technology , Noakowskiego St. 3 , 00-664 Warsaw , Poland
| | - Andrzej Jończyk
- Faculty of Chemistry , Warsaw University of Technology , Noakowskiego St. 3 , 00-664 Warsaw , Poland
| | - Jan K Maurin
- National Medicines Institute , Chełmska St. 30/34 , 00-725 Warsaw , Poland.,National Centre for Nuclear Research , Andrzeja Sołtana 7 St. , 05-400 Otwock , Poland
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Lisiecki K, Krawczyk KK, Roszkowski P, Maurin JK, Budzianowski A, Czarnocki Z. Unusual visible-light photolytic cleavage of tertiary amides during the synthesis of cyclolignans related to podophyllotoxin. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.021] [Citation(s) in RCA: 3] [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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Pawlukojć A, Hetmańczyk J, Nowicka-Scheibe J, Maurin JK, Schilf W, Rozwadowski Z. Spectroscopic, thermal and structural studies of new -leucine and -leucine complexes with chloranilic acid. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.047] [Citation(s) in RCA: 3] [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: 11/25/2022]
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21
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Pomarański P, Roszkowski P, Maurin JK, Budzianowski A, Czarnocki Z. Convenient synthesis of selected meta- and ortho-substituted pentaarylpyridines via the Suzuki-Miyaura cross-coupling reaction. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.064] [Citation(s) in RCA: 10] [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: 11/29/2022]
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Ahmad S, Shukla L, Szawkało J, Roszkowski P, Maurin JK, Czarnocki Z. Synthesis of novel chiral guanidine catalyst and its application in the asymmetric Pictet-Spengler reaction. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2016.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Błachut DA, Szawkało J, Pomarański P, Roszkowski P, Maurin JK, Czarnocki Z. Efficient synthesis of differently substituted triarylpyridines with the Suzuki-Miyaura cross-coupling reaction. ARKIVOC 2016. [DOI: 10.3998/ark.5550190.p009.772] [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: 11/04/2022] Open
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24
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Pomarański P, Samanta S, Roszkowski P, Maurin JK, Czarnocki Z. Enantioselective synthesis of axially chiral 3-bromo-4-alkoxy-2,6-dimethyl-5-(naphthalen-1-yl)pyridines via an asymmetric Suzuki–Miyaura cross-coupling reaction. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.024] [Citation(s) in RCA: 7] [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: 10/21/2022]
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Szawkało J, Błachut D, Roszkowski P, Pomarański P, Maurin JK, Budzianowski A, Czarnocki Z. New stable atropisomers derived from 2,4,6-collidine and related compounds. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.086] [Citation(s) in RCA: 5] [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: 12/27/2022]
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Górecki M, Roszkowski P, Błachut D, Maurin JK, Budzianowski A, Frelek J, Czarnocki Z. Atropoisomerism in Mono- and Diaryl-Substituted 4-Amino-2,6-lutidines. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600456] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Marcin Górecki
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Piotr Roszkowski
- Faculty of Chemistry; University of Warsaw; Pasteura 1 02-093 Warsaw Poland
| | - Dariusz Błachut
- Forensic Laboratory; Internal Security Agency; 1 Sierpnia 30A 02-134 Warsaw Poland
| | - Jan K. Maurin
- National Medicines Institute; Chełmska 30/34 00-725 Warsaw Poland
- National Centre for Nuclear Research; Andrzeja Sołtana 7 05-400 Otwock-Świerk Poland
| | - Armand Budzianowski
- National Centre for Nuclear Research; Andrzeja Sołtana 7 05-400 Otwock-Świerk Poland
| | - Jadwiga Frelek
- Institute of Organic Chemistry; Polish Academy of Sciences; Kasprzaka 44/52 01-224 Warsaw Poland
| | - Zbigniew Czarnocki
- Faculty of Chemistry; University of Warsaw; Pasteura 1 02-093 Warsaw Poland
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Łukowska-Chojnacka E, Staniszewska M, Bondaryk M, Maurin JK, Bretner M. Lipase-Catalyzed Kinetic Resolution of Novel Antifungal N-Substituted Benzimidazole Derivatives. Chirality 2016; 28:347-54. [PMID: 26922853 DOI: 10.1002/chir.22591] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 12/04/2015] [Revised: 01/08/2016] [Accepted: 01/29/2016] [Indexed: 11/10/2022]
Abstract
A series of new N-substituted benzimidazole derivatives was synthesized and their antifungal activity against Candida albicans was evaluated. The chemical step included synthesis of appropriate ketones containing benzimidazole ring, reduction of ketones to the racemic alcohols, and acetylation of alcohols to the esters. All benzimidazole derivatives were obtained with satisfactory yields and in relatively short times. All synthesized compounds exhibit significant antifungal activity against Candida albicans 900028 ATCC (% cell inhibition at 0.25 μg concentration > 98%). Additionally, racemic mixtures of alcohols were separated by lipase-catalyzed kinetic resolution. In the enzymatic step a transesterification reaction was applied and the influence of a lipase type and solvent on the enantioselectivity of the reaction was studied. The most selective enzymes were Novozyme SP 435 and lipase Amano AK from Pseudomonas fluorescens (E > 100).
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Affiliation(s)
- Edyta Łukowska-Chojnacka
- Faculty of Chemistry, Institute of Biotechnology, Warsaw University of Technology, Warsaw, Poland
| | - Monika Staniszewska
- Independent Laboratory of Streptomyces and Fungi Imperfecti, National Institute of Public Health-National Institute of Hygiene, Warsaw, Poland
| | - Małgorzata Bondaryk
- Independent Laboratory of Streptomyces and Fungi Imperfecti, National Institute of Public Health-National Institute of Hygiene, Warsaw, Poland
| | - Jan K Maurin
- National Centre for Nuclear Research, Otwock, Poland.,National Medicines Institute, Warsaw, Poland
| | - Maria Bretner
- Faculty of Chemistry, Institute of Biotechnology, Warsaw University of Technology, Warsaw, Poland
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Lisiecki K, Krawczyk KK, Roszkowski P, Maurin JK, Czarnocki Z. Formal synthesis of (−)-podophyllotoxin through the photocyclization of an axially chiral 3,4-bisbenzylidene succinate amide ester – a flow photochemistry approach. Org Biomol Chem 2016; 14:460-469. [DOI: 10.1039/c5ob01844g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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
We have developed a strategy for the stereoselective synthesis of cyclolignans related to podophyllotoxin and its derivatives.
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Affiliation(s)
- Kamil Lisiecki
- Faculty of Chemistry
- University of Warsaw
- Warsaw 02-093
- Poland
| | | | | | - Jan K. Maurin
- National Medicines Institute
- Warsaw 00-725
- Poland
- Institute of Atomic Energy
- Otwock-Świerk 05-400
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Roszkowski P, Maurin JK, Czarnocki Z. The enantioselective synthesis of (S)-(+)-mianserin and (S)-(+)-epinastine. Beilstein J Org Chem 2015; 11:1509-13. [PMID: 26425208 PMCID: PMC4578372 DOI: 10.3762/bjoc.11.164] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 06/10/2015] [Accepted: 08/18/2015] [Indexed: 11/25/2022] Open
Abstract
A simple enantioselective synthetic procedure for the preparation of mianserin and epinastine in optically pure form is described. The key step in the synthetic pathway is the asymmetric reduction of the cyclic imine using asymmetric transfer hydrogenation conditions.
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Affiliation(s)
- Piotr Roszkowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Jan K Maurin
- National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland and ; National Centre for Nuclear Research, Andrzeja Sołtana 7, 05-400 Otwock-Świerk, Poland
| | - Zbigniew Czarnocki
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
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Błachut D, Maurin JK, Starosta W, Wojtasiewicz K, Czarnocki Z. (2S)-1-(4-Methoxyphenyl)-N-[(1R)-2-(4-methoxyphenyl)-1- methylethyl]-2-propanamine in Crude p-Methoxyamphetamine (PMA) Produced by the Leuckart Method. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-2002-0518] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The synthesis and separation of both diastereoisomers of 1-(4-methoxyphenyl)-N-[2- (4-methoxyphenyl)-1-methylethyl]-2-propanamine as markers of clandestine p-methoxyamphetamine have been described. The stereochemistry of the meso diastereomer was established by crystallographic method.
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Affiliation(s)
- Dariusz Błachut
- Department of Criminalistics, Office of the State Protection, 1 Sierpnia 30A, 02Ð134 Warsaw, Poland
| | - Jan K. Maurin
- Drug Institute, Chełmska 30/34, 00-750 Warsaw
- Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland
| | - Wojciech Starosta
- Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
| | | | - Zbigniew Czarnocki
- Faculty of Chemistry, Warsaw University, Pasteur St. 1, 02-093 Warsaw, Poland
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Traldi P, Molin L, Crotti S, Seraglia R, Czarnocki Z, Szawkało J, Maurin JK, Pluciński FA. Chemical aspects of the primary ionization mechanisms in matrix-assisted laser desorption ionization. Eur J Mass Spectrom (Chichester) 2014; 20:437-444. [PMID: 25905868 DOI: 10.1255/ejms.1296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It has been proposed that the primary ionization mechanism occurring in matrix-assisted laser desorption ionization (MALDI) experiments originates from the presence, in the solid-state matrix-analytes sample, of matrix dimers. These species are formed by the interaction of carboxylic groups present in the matrix molecules with the formation of strong hydrogen bonds. Theoretical calculations proved that the laser irradiation of these structures leads to one or two H-bridge cleavages, giving rise to an "open" dimer structure or to disproportionation with the formation of MH(+) and [M-H](-) species. The ions so formed can be considered highly effective in their reaction with analyte ions, leading to their protonation (or deprotonation). To achieve further evidence for these proposals, in the present study the energetics of the reactions of ions from different aromatic carboxylic acids with two amino acids (glycine and lysine) and three multipeptides (gly-gly, gly-gly-gly and gly-gly-gly-gly) was investigated. The lowest ∆G values were obtained for 2,5- dihydroxybenzoic acid, widely employed as the MALDI matrix. Also, for p-nitrobenzoic acid the reaction is slightly exothermic, while for the other aromatic carboxylic acids derivatives positives values of ∆G are present.
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Affiliation(s)
- Pietro Traldi
- National Council of Researches, Institute for Energetics and Interphases, Corso Stati Uniti 4, 35100 Padua, Italy.
| | - Laura Molin
- National Council of Researches, Institute for Energetics and Interphases, Corso Stati Uniti 4, 35100 Padua, Italy.
| | - Sara Crotti
- Experimental and Clinical Pharmacology Unit, Centro di Riferimento Oncologico - National Cancer Institute, Aviano PN, Italy.
| | - Roberta Seraglia
- National Council of Researches, Institute for Energetics and Interphases, Corso Stati Uniti 4, 35100 Padua, Italy.
| | - Zbigniew Czarnocki
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Joanna Szawkało
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Jan K Maurin
- National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland. National Centre for Nuclear Research, 05- 400 Otwock, Świerk, Poland.
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Roszkowski P, Błachut D, Maurin JK, Woźnica M, Frelek J, Pluciński F, Czarnocki Z. Atropisomerism in 3,4,5-Tri-(2-methoxyphenyl)-2,6-lutidine. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301378] [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: 11/11/2022]
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Granica S, Kiss AK, Jarończyk M, Maurin JK, Mazurek AP, Czarnocki Z. Synthesis of imperatorin analogs and their evaluation as acetylcholinesterase and butyrylcholinesterase inhibitors. Arch Pharm (Weinheim) 2013; 346:775-82. [PMID: 24123207 DOI: 10.1002/ardp.201300259] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [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: 07/11/2013] [Revised: 08/09/2013] [Accepted: 08/12/2013] [Indexed: 11/06/2022]
Abstract
In this study, we synthesized several imperatorin analogs using imperatorin and xanthotoxin as substrates. The anti-cholinesterase activities of all compounds were evaluated in in vitro experiments according to the modified Ellman's method. For each synthesized compound, IC50 values for both enzymes were established. Galantamine hydrobromide was used as a positive control in the enzymatic experiments. All active compounds showed selectivity toward butyrylcholinesterase (BuChE) rather than acetylcholinesterase. The most active ones were 8-(3-methylbutoxy)-psoralen and 8-hexoxypsoralen with IC50 values for BuChE of around 16.5 and 16.4 µM, respectively. The results of our study may be considered as the beginning of a search for potential anti-Alzheimer's disease drugs based on the structure of natural furocoumarins.
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Affiliation(s)
- Sebastian Granica
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland; Faculty of Pharmacy, Department of Pharmacognosy and Molecular Basis of Phytotherapy, Medical University of Warsaw, Warsaw, Poland
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Molęda Z, Zawadzka A, Żytek M, Madej D, Pluciński F, Maurin JK, Czarnocki Z. Unexpected reaction of melatonin derivatives with performic acid. CR CHIM 2013. [DOI: 10.1016/j.crci.2013.03.005] [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: 10/26/2022]
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Kończyk AA, Szawkało J, Maurin JK, Czarnocki Z. Efficient One-Pot Synthesis of a Densely Functionalized Tetrahydropyridine in the Presence of [1,1′-Binaphthalene]-2,2′-diol/Indium(III) Chloride (binol/InCl3) or SimpleBrønstedAcids as Catalysts. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200517] [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: 11/06/2022]
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37
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Maurin JK, Zawadzka A, Łozińska I, Czarnocki Z. 3-(2-Acetamido-eth-yl)-1H-indol-5-yl 4-nitro-phenyl carbonate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2915. [PMID: 23125706 PMCID: PMC3470262 DOI: 10.1107/s1600536812038238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 09/06/2012] [Indexed: 12/04/2022]
Abstract
In the title mol-ecule, C(19)H(17)N(3)O(6), the indole ring system is essentially planar (r.m.s. deviation = 0.009 Å) and forms a dihedral angle of 31.96 (9)° with the nitro-substituted benzene ring. In the crystal, mol-ecules are linked by pairs of N-H⋯O hydrogen bonds, forming inversion dimers which are connected by further N-H⋯O hydrogen bonds into a two-dimensional network parallel to (102).
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Affiliation(s)
- Jan K. Maurin
- National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland
- NationalCentre for Nuclear Research, 05-400 Otwock-Świerk, Poland
| | - Anna Zawadzka
- Faculty of Chemistry, Warsaw University, Pasteura 1, 02-093 Warsaw, Poland
| | - Iwona Łozińska
- Faculty of Chemistry, Warsaw University, Pasteura 1, 02-093 Warsaw, Poland
| | - Zbigniew Czarnocki
- Faculty of Chemistry, Warsaw University, Pasteura 1, 02-093 Warsaw, Poland
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Roszkowski P, Maurin JK, Czarnocki Z. Novel (R)-(+)-limonene-derived ligands: synthesis and application in asymmetric transfer hydrogenations. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.06.022] [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: 11/29/2022]
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Latosińska JN, Latosińska M, Tomczak MA, Seliger J, Zagar V, Maurin JK. Conformations and intermolecular interactions pattern in solid chloroxylenol and triclosan (API of anti-infective agents and drugs). A (35)Cl NQR, (1)H-(14)N NQDR, X-ray and DFT/QTAIM study. Magn Reson Chem 2012; 50:89-105. [PMID: 22354770 DOI: 10.1002/mrc.2799] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 05/22/2011] [Accepted: 08/08/2011] [Indexed: 05/31/2023]
Abstract
Two antibacterial and antifungal agents, chloroxylenol (4-chloro-3,5-dimethyl-phenol) and triclosan (5-chloro-2-(2',4'-dichlorophenoxy)-phenol), were studied experimentally in solid state with an X-ray, (35)Cl-nuclear quadrupole resonance (NQR) and (17)O-nuclear quadrupole double resonance (NQDR) spectroscopies and, theoretically, with the density functional theory/quantum theory of atoms in molecules (DFT/QTAIM). The crystallographic structure of triclosan, which crystallises in space group P31 with one molecule in the asymmetric unit [a = 12.64100(10), b = 12.64100(10), c = 6.71630(10) Å], was solved with an X-ray and refined to a final R-factor of 2.81% at room temperature. The NQR frequencies of (35)Cl and (17)O were detected with the help of the density functional theory (DFT) assigned to particular chlorine and oxygen sites in the molecules of both compounds. The NQR frequencies at (35)Cl sites in chloroxylenol and triclosan were found to be more differentiated than frequencies at the (17)O site. The former better describes the substituent withdrawing effects connected to π-electron delocalization within the benzene rings and the influence of temperature; whereas, those at the (17)O site provide more information on O-H bond and intermolecular interactions pattern. The conformation adopted by diphenyl ether of triclosan in solid state was found to be typical of diphenyl ethers, but the opposite to those adopted when it was bound to different inhibitors. According to an X-ray study, temperature had no effect on the conformation of the diphenyl ring of triclosan, which was the same at 90 K and at room temperature (RT). The scattering of NQR frequencies reproduced by the DFT under assumption of the X-ray data at 90 K and RT is found to be a good indicator of the quality of resolution of the crystallographic structure.
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Affiliation(s)
- J N Latosińska
- Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614, Poznań, Poland.
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Molin L, Seraglia R, Czarnocki Z, Maurin JK, Pluciński FA, Traldi P. On the Primary Ionization Mechanism(s) in Matrix-Assisted Laser Desorption Ionization. J Anal Methods Chem 2012; 2012:161865. [PMID: 23251835 PMCID: PMC3515899 DOI: 10.1155/2012/161865] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Accepted: 10/19/2012] [Indexed: 05/03/2023]
Abstract
A mechanism is proposed for the first step of ionization occurring in matrix-assisted laser desorption ionization, leading to protonated and deprotonated matrix (Ma) molecules ([Ma + H](+) and [Ma - H](-) ions). It is based on observation that in solid state, for carboxyl-containing MALDI matrices, the molecules form strong hydrogen bonds and their carboxylic groups can act as both donors and acceptors. This behavior leads to stable dimeric structures. The laser irradiation leads to the cleavage of these hydrogen bonds, and theoretical calculations show that both [Ma + H](+) and [Ma - H](-) ions can be formed through a two-photon absorption process. Alternatively, by the absorption of one photon only, a heterodissociation of one of the O-H bonds can lead to a stable structure containing both cationic and anionic sites. This structure could be considered an intermediate that, through the absorption of a further photon, leads to the formation of matrix ions. Some experiments have been performed to evaluate the role of thermal ionization and indicate that its effect is negligible. Some differences have been observed for different matrices in the formation of analyte molecule (M) ion [M + H](+), [M - H](-), M(+•), and [M - 2H](-•), and they have been explained in terms of ionization energies, pKa values, and thermodynamic stability.
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Affiliation(s)
- Laura Molin
- National Council of Researches, Institute of Molecular Sciences and Technologies, Corso Stati Uniti 4, I35100 Padova, Italy
| | - Roberta Seraglia
- National Council of Researches, Institute of Molecular Sciences and Technologies, Corso Stati Uniti 4, I35100 Padova, Italy
| | - Zbigniew Czarnocki
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Jan K. Maurin
- National Medicines Institute, Chełmska 30/34, 00-725 Warsaw, Poland
- National Centre for Nuclear Research, 05-400 Otwock, Świerk, Poland
| | | | - Pietro Traldi
- National Council of Researches, Institute of Molecular Sciences and Technologies, Corso Stati Uniti 4, I35100 Padova, Italy
- *Pietro Traldi:
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Krawczyk KK, Madej D, Maurin JK, Czarnocki Z. l-Prolinol as a chiral auxiliary in the photochemical synthesis of a new aryltetraline lignan analogue. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.06.007] [Citation(s) in RCA: 9] [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: 11/15/2022]
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Krawczyk KK, Wojtasiewicz K, Maurin JK, Gronowska E, Czarnocki Z. Trimethyl-3-meth-oxy-4-oxo-5-triphenyl-phospho-ranyl-idene-cyclo-pent-1-ene-1,2,3-tricarboxyl-ate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o2792. [PMID: 21588989 PMCID: PMC3009217 DOI: 10.1107/s1600536810037815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Accepted: 09/21/2010] [Indexed: 11/15/2022]
Abstract
The title compound, C30H27O8P (2), was formed as one of two products {(1) [Krawczyk et al. (2010 ▶). Acta Cryst. E66 (cv2752)] and (2)} in the reaction of dimethyl acetylenedicarboxylate with triphenylphosphine. The molecule of (2) consists of a five-membered carbocyclic ring. The P atom is a part of a triphenylphosphoranylidene substituent. In contrast to (1), the five-membered ring of (2) is planar, the r.m.s. deviation being only 0.009 (2) Å.
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Krawczyk KK, Wojtasiewicz K, Maurin JK, Gronowska E, Czarnocki Z. Tetra-methyl 1,1,2-triphenyl-2H-1λ-phosphole-2,3,4,5-tetra-carboxyl-ate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o2791. [PMID: 21588988 PMCID: PMC3008977 DOI: 10.1107/s1600536810037827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Accepted: 09/21/2010] [Indexed: 11/10/2022]
Abstract
The title compound, C(30)H(27)O(8)P (1), was formed as one of two products {(1) and (2) [Krawczyk et al. (2010 ▶). Acta Cryst. E66 (cv2753)]} in the reaction of dimethyl acetyl-enedicarboxyl-ate with triphenyl-phosphine. The mol-ecule of (1) consists of a five-membered ring, in which the P atom is incorporated. One of the phenyl groups of the triphenyl-phosphine migrated to a vicinal C atom during the reaction. The five-membered ring of (1) is corrugated [r.m.s. deviation = 0.0719 (8) Å], whereas that in compound (2) is planar, the r.m.s. deviation being only 0.009 (2) Å.
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Komsta Ł, Maurin JK. Recognition of active ingredients in tablets by chemometric processing of X-ray diffractometric data. Talanta 2010; 82:850-3. [DOI: 10.1016/j.talanta.2010.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Revised: 04/26/2010] [Accepted: 05/10/2010] [Indexed: 10/19/2022]
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Pawłowski M, Lendzion A, Szawkało J, Leniewski A, Maurin JK, Czarnocki Z. Synthesis and Structure Determination of Some Monothio- and Dithioimides Derived from Succinic and Glutaric Acids. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500902856404] [Citation(s) in RCA: 1] [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: 10/20/2022]
Affiliation(s)
| | - Anna Lendzion
- a Faculty of Chemistry , Warsaw University , Warsaw, Poland
| | | | | | - Jan K. Maurin
- b National Medicines Institute , Warsaw, Poland
- c Institute of Atomic Energy , Otwock-Świerk, Poland
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Pawłowska J, Krawczyk KK, Wojtasiewicz K, Maurin JK, Czarnocki Z. (S)-(−)-α-Methylbenzylamine as chiral auxiliary in the synthesis of (+)-lortalamine. Monatsh Chem 2008. [DOI: 10.1007/s00706-008-0017-2] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Siwicka A, Moleda Z, Wojtasiewicz K, Zawadzka A, Maurin JK, Panasiewicz M, Pacuszka T, Czarnocki Z. The oxidation products of melatonin derivatives exhibit acetylcholinesterase and butyrylcholinesterase inhibitory activity. J Pineal Res 2008; 45:40-9. [PMID: 18284552 DOI: 10.1111/j.1600-079x.2008.00554.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It is already well documented that melatonin exhibits strong antioxidant properties. It traps several reactive oxygen species including singlet oxygen, peroxyl and hydroxyl radicals. Also, peroxynitrite-induced reactions are inhibited by melatonin. The oxidation of melatonin by singlet molecular oxygen [O(2) ((1)Delta(g))] may produce cyclic 3-hydroxymelatonin whose structure we have already studied. In this investigation we report on the synthesis of several melatonin analogues having a carbamate substituent instead of the methoxy group at 5 position of the indole ring. These compounds behave analogously to melatonin with respect to singlet oxygen and produce the corresponding cyclic 3-hydroxymelatonin analogues. The structures of the products were investigated with spectral methods and X-ray crystallography. The compounds obtained possess the 2,3,8,8a-tetrahydropyrrolo[2,3-b]indole heterocyclic system which is a structural motif characteristic of alkaloids, physostigmine and phenserine, that are potent acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitors used in the Alzheimer's disease treatment. We measured the inhibitory activity of the obtained compounds against AChE and BChE from human erythrocytes and serum. In the case of the compounds having a phenylcarbamate and methoxyphenylcarbamate substituents, the inhibitory activity (IC(50)) ranged from 0.252 +/- 0.033 to 3.804 +/- 0.581 microM. Other compounds were less active and showed rather complex interactions with the structure-activity relationship in need of further investigation.
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Balzarini J, Orzeszko-Krzesińska B, Maurin JK, Orzeszko A. Synthesis and anti-HIV studies of 2- and 3-adamantyl-substituted thiazolidin-4-ones. Eur J Med Chem 2008; 44:303-11. [PMID: 18420310 PMCID: PMC7127420 DOI: 10.1016/j.ejmech.2008.02.039] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Revised: 02/25/2008] [Accepted: 02/26/2008] [Indexed: 10/31/2022]
Abstract
A series of novel thiazolidin-4-ones bearing a lipophilic adamantyl substituent at position 2 or 3 were synthesized. A majority of them showed a modest anti-HIV-1 activity, whereas 2-adamantan-1-yl-3-(4,6-dimethylpyrimidin-2-yl)-thiazolidin-4-one (8) was endowed with a remarkable antiviral potency (EC(50)=0.67 microM). The new series of compounds (22-29) with an adamantyl moiety at the 3-position of the thiazolidinone ring showed good to modest anti-HIV-1 activity (EC(50)=1.0-11 microM) but also pronounced cytostatic activity. For example 24, 26 and 29 showed an EC(50) of 1.0-2.0 microM, while the 50% effective concentrations for 23 and 28 were 7.8 and 11.0 microM, respectively. X-ray studies and quantum chemical calculations revealed that the anti-HIV activity of the compounds strongly depends on their dipole moments and conformation of the thiazolidinones.
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Affiliation(s)
- Jan Balzarini
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
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Czarnocki SJ, Wojtasiewicz K, Jóźwiak AP, Maurin JK, Czarnocki Z, Drabowicz J. Enantioselective synthesis of (+)-trypargine and (+)-crispine E. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.088] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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