1
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Siudem P, Szeleszczuk Ł, Paradowska K. Solid state NMR study of the bioenhancer piperine, supported by GIPAW DFT calculations. J Pharm Biomed Anal 2024; 243:116095. [PMID: 38479304 DOI: 10.1016/j.jpba.2024.116095] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/22/2024] [Accepted: 03/06/2024] [Indexed: 04/06/2024]
Abstract
Piperine, an alkaloid found in black pepper fruits, has the properties of promoting the absorption of other substances (e.g. curcumin), therefore it is used in solid forms of dietary supplements as an additive increasing bioavailability. The aim of the study was to analyze piperine in a solid state and then to use it in the analysis of solid dietary supplements with the addition of piperine as an absorption promoter. The 13C CP MAS NMR spectra were recorded using variable contact time and dipolar dephasing experiment. The calculation of theoretical chemical shift values for three polymorphic forms of piperine allowed us to create a database of NMR parameters enabling the identification of polymorphic forms based on the analysis of the 13C CP MAS NMR spectrum. Additionally, the analysis of cross-polarization kinetics parameters was performed. Then, the 13C CP MAS NMR technique was used to confirm the authenticity and determine the presence of curcumin in dietary supplements containing curcumin with the addition of piperine. The presence of piperine could be confirmed even when the mass content of piperine was 70 times lower than that of curcumin. This method can be used to test the quality of dietary supplements containing the addition of piperine as an absorption promoter.
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Affiliation(s)
- Paweł Siudem
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, Warsaw 02-097, Poland.
| | - Łukasz Szeleszczuk
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, Warsaw 02-097, Poland
| | - Katarzyna Paradowska
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, Warsaw 02-097, Poland
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2
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Dobros N, Zielińska A, Siudem P, Zawada KD, Paradowska K. Profile of Bioactive Components and Antioxidant Activity of Aronia melanocarpa Fruits at Various Stages of Their Growth, Using Chemometric Methods. Antioxidants (Basel) 2024; 13:462. [PMID: 38671910 PMCID: PMC11047607 DOI: 10.3390/antiox13040462] [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: 03/14/2024] [Revised: 04/06/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Aronia (chokeberry, Aronia melanocarpa) is a valuable fruit that combines the health benefits of green tea and red wine and is gaining popularity worldwide. Aronia has a unique chemical composition with strong antioxidant properties, including anthocyanins and chlorogenic acids (CGAs). However, it remains unclear which specific compounds or groups are primarily responsible for the antioxidant properties of chokeberry. Therefore, an analysis of the antioxidant properties of aronia berries based on geographical region and their variability during ripening (from green to frostbitten fruit) was conducted. The fruits were collected from three locations for two years. The aim of our work was to identify the compounds responsible for the antioxidant properties of aronia berry extracts by using chemometric methods. The analyses of anthocyanins and CGAs were performed using HPLC-DAD, and the antioxidant capacity was assessed by FRAP and DPPH methods. The PCA analysis also considered variations in temperature and precipitation. The chemometric analysis revealed a strong correlation between radical-scavenging properties and the content levels of chlorogenic acids. The results obtained in this study show that unripe green chokeberry fruits exhibit the highest antioxidant properties, which can be attributed to the high content of CGAs at this stage.
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Affiliation(s)
| | - Agnieszka Zielińska
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (N.D.); (P.S.); (K.D.Z.); (K.P.)
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3
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Zielińska A, Bryk D, Paradowska K, Siudem P, Wawer I, Wrzosek M. Anti-Atherosclerotic Properties of Aronia melanocarpa Extracts Influenced by Their Chemical Composition Associated with the Ripening Stage of the Berries. Int J Mol Sci 2024; 25:4145. [PMID: 38673738 PMCID: PMC11050415 DOI: 10.3390/ijms25084145] [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: 03/07/2024] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
The high content of bioactive compounds in Aronia melanocarpa fruit offers health benefits. In this study, the anti-atherosclerotic effect of Aronia extracts was assessed. The impact on the level of adhesion molecules and the inflammatory response of human umbilical vein endothelial cells (HUVECs) was shown in relation to the chemical composition and the stage of ripening of the fruits. Samples were collected between May (green, unripe) and October (red, overripe) on two farms in Poland, which differed in climate. The content of chlorogenic acids, anthocyanins, and carbohydrates in the extracts was determined using HPLC-DAD/RI. The surface expression of ICAM-1 and VCAM-1 in HUVECs was determined by flow cytometry. The mRNA levels of VCAM-1, ICAM-1, IL-6, and MCP-1 were assessed using the quantitative real-time PCR method. The farms' geographical location was associated with the quantity of active compounds in berries and their anti-atherosclerotic properties. Confirmed activity for green fruits was linked to their high chlorogenic acid content.
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Affiliation(s)
- Agnieszka Zielińska
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (A.Z.); (K.P.)
| | - Dorota Bryk
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland;
| | - Katarzyna Paradowska
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (A.Z.); (K.P.)
| | - Paweł Siudem
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (A.Z.); (K.P.)
| | - Iwona Wawer
- Department of Herbology, State University of Applied Sciences, Rynek 1, 38-400 Krosno, Poland;
| | - Małgorzata Wrzosek
- Department of Biochemistry and Pharmacogenomics, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland;
- Centre for Preclinical Research, Medical University of Warsaw, Banacha 1b, 02-097 Warsaw, Poland
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Siudem P, Szeleszczuk Ł, Paradowska K. Searching for Natural Aurora a Kinase Inhibitors from Peppers Using Molecular Docking and Molecular Dynamics. Pharmaceuticals (Basel) 2023; 16:1539. [PMID: 38004405 PMCID: PMC10674409 DOI: 10.3390/ph16111539] [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: 09/19/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/26/2023] Open
Abstract
Natural products are the precursors of many medicinal substances. Peppers (Piper, Capsicum, Pimienta) are a rich source of compounds with potential multidirectional biological activity. One of the studied directions is antitumor activity. Little research has been carried out so far on the ability of the compounds contained in peppers to inhibit the activity of Aurora A kinase, the overexpression of which is characteristic of cancer development. In this study, molecular docking methods, as well as molecular dynamics, were used, looking for compounds that could inhibit the activity of Aurora A kinase and trying to determine whether there is a relationship between the stimulation of the TRPV1 receptor and the inhibition of Aurora A kinase. We compared our results with anticancer activity studied earlier on MCF-7 cell lines (breast cancer cells). Our research indicates that the compounds contained in peppers can inhibit Aurora A. Further in vitro research is planned to confirm the obtained results.
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Affiliation(s)
- Paweł Siudem
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-093 Warsaw, Poland; (Ł.S.); (K.P.)
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Siudem P, Szeleszczuk Ł, Zielińska A, Paradowska K. 13C CPMAS NMR as an Alternative Method to Verify the Quality of Dietary Supplements Containing Curcumin. Molecules 2023; 28:molecules28083442. [PMID: 37110676 PMCID: PMC10143288 DOI: 10.3390/molecules28083442] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/10/2023] [Revised: 03/29/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Turmeric is a traditional Indian spice that has recently become very popular worldwide because it contains a powerful ingredient called curcumin, which has strong anti-inflammatory properties. Hence, dietary supplements containing extracts rich in curcumin have gained great popularity. The main problems related to curcumin-containing dietary supplements are poor water solubility and the fact that they are often faked by using synthetic curcumin instead of the plant extract. In this article, we propose the use of the 13C CPMAS NMR method to control the quality of dietary supplements. The analysis of 13C CPMAS NMR spectra supported by GIPAW computations allowed us to identify a polymorphic form present in dietary supplements (which affected the solubility of curcumin) and to point out a dietary supplement that could be faked by using synthetic curcumin. Further PXRD and HPLC investigations confirmed that the examined supplement contained synthetic curcumin instead of the genuine extract. Our method can be used for routine control, especially because the investigation is performed directly from the capsule/tablet content and does not require any special sample preparation.
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Affiliation(s)
- Paweł Siudem
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Łukasz Szeleszczuk
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Agnieszka Zielińska
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Katarzyna Paradowska
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
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6
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Górnicka J, Mika M, Wróblewska O, Siudem P, Paradowska K. Methods to Improve the Solubility of Curcumin from Turmeric. Life (Basel) 2023; 13:life13010207. [PMID: 36676157 PMCID: PMC9862957 DOI: 10.3390/life13010207] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Turmeric is a strong-taste component of spices characteristic of Indian cuisine. It is obtained from the turmeric rhizome (Curcumae longae rhizoma) and has been used for thousands of years not only for culinary purposes, but also for medicinal purposes. It contains a group of organic compounds called curcuminoids. Curcumin is the main representative of this group of compounds which is also most frequently studied. In recent years, bioactive curcuminoids (including curcumin in the first place) have become more and more popular due to a wide spectrum of their biological activity. The anticancer, antibacterial, anti-inflammatory, and antiaging effects of curcumin have been confirmed by numerous in vitro and in vivo studies, as well as in clinical trials. However, an obstacle to simple, clinical application of curcumin is its poor bioavailability (which is due to its hydrophobic nature) and its very weak water solubility. Therefore, many scientists are working on improving the solubility of curcumin in water, which is the topic of the present article. Attempts have been made to combine curcumin with nanoparticles (polysaccharide or silica). Nanosuspensions or complexes with cyclodextrins are also considered. A promising direction is the search for new polymorphic varieties as well as obtaining cocrystals with curcumin which are characterized by better water solubility.
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Affiliation(s)
- Julia Górnicka
- Student Research Group “Free Radicals”, Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Martyna Mika
- Student Research Group “Free Radicals”, Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Oliwia Wróblewska
- Student Research Group “Free Radicals”, Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Paweł Siudem
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
- Correspondence:
| | - Katarzyna Paradowska
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
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Dobros N, Zawada KD, Paradowska K. Phytochemical Profiling, Antioxidant and Anti-Inflammatory Activity of Plants Belonging to the Lavandula Genus. Molecules 2022; 28:molecules28010256. [PMID: 36615453 PMCID: PMC9821988 DOI: 10.3390/molecules28010256] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022] Open
Abstract
Lavender is a valuable medicinal plant belonging to the Lamiaceae family. Currently 39 species are known, but only Lavandula angustifolia is a pharmacopoeial raw material. Lavender has a long history of medicinal use and mainly exhibits antioxidant, anti-inflammatory, sedative, antidepressant, spasmolytic, anticholinesterases, antifungal and antibacterial properties. Used internally, it relieves symptoms of mental stress and insomnia and supports digestion. Topical use of lavender in aromatherapy, neuralgia and antiseptics is also known. The constant interest in lavender, and in particular in Lavandula angustifolia, in the field of medicine and pharmacy is evidenced by the growing number of publications. In view of so many studies, it seems important to review traditional and modern extraction techniques that determine the chemical composition responsible for the antioxidant and anti-inflammatory effects of various extracts from the species of the Lavandula genus.
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Siudem P, Zielińska A, Paradowska K. Application of 1H NMR in the study of fatty acids composition of vegetable oils. J Pharm Biomed Anal 2022; 212:114658. [DOI: 10.1016/j.jpba.2022.114658] [Citation(s) in RCA: 1] [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: 11/29/2021] [Revised: 02/06/2022] [Accepted: 02/08/2022] [Indexed: 10/19/2022]
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9
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Ahmedova A, Pavlović G, Marinov M, Marinova P, Momekov G, Paradowska K, Yordanova S, Stoyanov S, Vassilev N, Stoyanov N. Synthesis and anticancer activity of Pt(II) complexes of spiro-5-substituted 2,4-dithiohydantoins. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120605] [Citation(s) in RCA: 2] [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: 11/25/2022]
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10
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Michalak M, Paradowska K, Zielińska A. Phenolic content, antioxidant activity and pharmaceutical availability of hydrogels with extracts of Rosmarinus officinalis L. and Sambucus nigra L. Acta Poloniae Pharmaceutica - Drug Research 2021. [DOI: 10.32383/appdr/134000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dąbrowska-Balcerzak K, Nartowska J, Wawer I, Siudem P, Paradowska K. Spirostanol Sapogenins and Saponins from Convallaria majalis L. Structural Characterization by 2D NMR, Theoretical GIAO DFT Calculations and Molecular Modeling. Molecules 2021; 26:2999. [PMID: 34070073 PMCID: PMC8158116 DOI: 10.3390/molecules26102999] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/22/2021] [Accepted: 05/10/2021] [Indexed: 11/17/2022] Open
Abstract
Two new spirostanol sapogenins (5β-spirost-25(27)-en-1β,2β,3β,5β-tetrol 3 and its 25,27-dihydro derivative, (25S)-spirostan-1β,2β,3β,5β-tetrol 4) and four new saponins were isolated from the roots and rhizomes of Convallaria majalis L. together with known sapogenins (isolated from Liliaceae): 5β-spirost-25(27)-en-1β,3β-diol 1, (25S)-spirostan-1β,3β-diol 2, 5β-spirost-25(27)-en-1β,3β,4β,5β-tetrol 5, (25S)-spirostan-1β,3β,4β,5β-tetrol 6, 5β-spirost-25(27)-en-1β,2β,3β,4β,5β-pentol 7 and (25S)-spirostan-1β,2β,3β,4β,5β-pentol 8. New steroidal saponins were found to be pentahydroxy 5-O-glycosides; 5β-spirost-25(27)-en-1β,2β,3β,4β,5β-pentol 5-O-β-galactopyranoside 9, 5β-spirost-25(27)-en-1β,2β,3β,4β,5β-pentol 5-O-β-arabinonoside 11, 5β-(25S)-spirostan-1β,2β,3β,4β,5β-pentol 5-O-galactoside 10 and 5β-(25S)-spirostan-1β,2β,3β,4β,5β-pentol 5-O-arabinoside 12 were isolated for the first time. The structures of those compounds were determined by NMR spectroscopy, including 2D COSY, HMBC, HSQC, NOESY, ROESY experiments, theoretical calculations of shielding constants by GIAO DFT, and mass spectrometry (FAB/LSI HR MS). An attempt was made to test biological activity, particularly as potential chemotherapeutic agents, using in silico methods. A set of 12 compounds was docked to the PDB structures of HER2 receptor and tubulin. The results indicated that diols have a higher affinity to the analyzed targets than tetrols and pentols. Two compounds (25S)-spirosten-1β,3β-diol 1 and 5β-spirost-25(27)-en-1β,2β,3β,4β,5β-pentol 5-O-galactoside 9 were selected for further evaluation of biological activity.
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Affiliation(s)
- Karolina Dąbrowska-Balcerzak
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (K.D.-B.); (I.W.); (K.P.)
| | - Jadwiga Nartowska
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland;
| | - Iwona Wawer
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (K.D.-B.); (I.W.); (K.P.)
| | - Paweł Siudem
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (K.D.-B.); (I.W.); (K.P.)
| | - Katarzyna Paradowska
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (K.D.-B.); (I.W.); (K.P.)
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Sajkowska-Kozielewicz JJ, Kozielewicz P, Makarova K, Stocki M, Barnes NM, Paradowska K. Geissospermiculatine, a New Alkaloid from Geissospermum reticulatum Bark. Molecules 2020; 26:molecules26010143. [PMID: 33396182 PMCID: PMC7795935 DOI: 10.3390/molecules26010143] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/16/2020] [Accepted: 12/28/2020] [Indexed: 12/03/2022] Open
Abstract
A new alkaloid, geissospermiculatine was characterized in Geissospermum reticulatum A. H. Gentry bark (Apocynaceae). Here, following a simplified isolation protocol, the structure of the alkaloid was elucidated through GC-MS, LC-MS/MS, 1D, and 2D NMR (COSY, ROESY, HSQC, HMBC, 1H-15N HMBC). Cytotoxic properties were evaluated in vitro on malignant THP-1 cells, and the results demonstrated that the cytotoxicity of the alkaloid (30 μg/mL) was comparable with staurosporine (10 μM). Additionally, the toxicity was tested on zebrafish (Danio rerio) embryos in vivo by monitoring their development (0–72 h); toxicity was not evident at 30 μg/mL.
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Affiliation(s)
- Joanna J. Sajkowska-Kozielewicz
- Department of Physical Chemistry, Faculty of Pharmacy with Laboratory Medicine Division, Medical University of Warsaw, 02-097 Warsaw, Poland; (K.M.); (K.P.)
- Correspondence:
| | - Paweł Kozielewicz
- Department of Physiology and Pharmacology, Karolinska Institutet, 17165 Stockholm, Sweden;
- Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B152TT, UK;
| | - Katerina Makarova
- Department of Physical Chemistry, Faculty of Pharmacy with Laboratory Medicine Division, Medical University of Warsaw, 02-097 Warsaw, Poland; (K.M.); (K.P.)
| | - Marcin Stocki
- Institute of Forest Sciences, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, Poland;
| | - Nicholas M. Barnes
- Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B152TT, UK;
| | - Katarzyna Paradowska
- Department of Physical Chemistry, Faculty of Pharmacy with Laboratory Medicine Division, Medical University of Warsaw, 02-097 Warsaw, Poland; (K.M.); (K.P.)
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Zielińska A, Bryk D, Paradowska K, Wawer I. Aronia melanocarpa Leaves as a Source of Chlorogenic Acids, Anthocyanins, and Sorbitol, and Their Anti-Inflammatory Activity. POL J FOOD NUTR SCI 2020. [DOI: 10.31883/pjfns/130255] [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: 11/20/2022] Open
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Abstract
The TRPV1 receptor (transient receptor potential cation channel subfamily V member 1)
is a non-selective cationic channel activated by vanilloids like capsaicin. Therefore, TRPV1 is
also called a capsaicin’s receptor, which is a spicy substance found in chili peppers. The receptor
is located in sensory nerve fibers and non-neuronal cells, for example in vascular endothelial
and smooth muscle cells. It is thought to act as an integrator of various physical and
chemical stimuli that provide heat and pain. The activation of the TRPV1 may affect at various
physiological functions like release inflammatory mediators, gastrointestinal motility and
temperature regulation. Numerous studies in recent years show TRPV1 plays an important
role in physiology and development of pathological conditions of gastrointestinal, cardiovascular
and respiratory system. These receptors are widely studied as a gripping point for
new painkillers, but there are also data indicating their potential involvement in the pathomechanism
of various diseases, e.g. epilepsy. TRPV1 targeting may be useful not only in paintreatment
but also urinary incontinence, chronic cough or irritable bowel syndrome. The need
for further investigation of the therapeutic potential of TRPV1 antagonists indicates the lack
of effective drugs to treat many of these conditions. The purpose of this article is to collect
and summarize knowledge about the TRPV1 receptor, its structure and mechanism of action.
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Affiliation(s)
- Paweł Siudem
- Zakład Chemii Fizycznej, Katedra Farmacji Fizycznej i Bioanalizy, Wydział Farmaceutyczny, Warszawski Uniwersytet Medyczny, Warszawa
| | - Katarzyna Paradowska
- Zakład Chemii Fizycznej, Katedra Farmacji Fizycznej i Bioanalizy, Wydział Farmaceutyczny, Warszawski Uniwersytet Medyczny, Warszawa
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15
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Zielińska A, Siudem P, Paradowska K, Gralec M, Kaźmierski S, Wawer I. Aronia melanocarpa Fruits as a Rich Dietary Source of Chlorogenic Acids and Anthocyanins: 1H-NMR, HPLC-DAD, and Chemometric Studies. Molecules 2020; 25:molecules25143234. [PMID: 32679898 PMCID: PMC7397235 DOI: 10.3390/molecules25143234] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 12/16/2022] Open
Abstract
Aronia melanocarpa (Michx.) Elliott's (chokeberry) besides anthocyanins contains significant amounts of hydroxycinnamic acids: Chlorogenic and its isomer neochlorogenic acid. They exhibit antioxidant, anti-inflammatory, antidiabetic, and antibacterial activities, thus they can have a significant impact on the health-promoting properties of Aronia. The aim of our research was to determine the changes in the content of chlorogenic acids (CGAs) and anthocyanins during fruit development and ripening, with a particular emphasis on acids. Aronia fruit samples were collected from July to October on two organic farms in Poland. The chemical composition of the extracts was determined by NMR spectroscopy and HPLC-DAD. 1H-NMR and HPLC data were analyzed using chemometric analysis and multivariate statistics (PCA). The results showed that the content of chlorogenic acids and anthocyanins changes during ripening and depends on the time of harvest and the region of cultivation. A correlation between the time of CGAs reduction and the appearance of anthocyanins was also noticed. The result of our research was also a database in the form of NMR parameters, which allows analysis of the metabolite profile and tracking of its changes. The 1H-NMR spectrum showing anthocyanin and CGA resonance can be considered the Aronia berry fingerprint.
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Affiliation(s)
- Agnieszka Zielińska
- Department of Physical Chemistry, Physical Pharmacy and Bioanalysis, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (A.Z.); (K.P.); (M.G.)
| | - Paweł Siudem
- Department of Physical Chemistry, Physical Pharmacy and Bioanalysis, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (A.Z.); (K.P.); (M.G.)
- Correspondence:
| | - Katarzyna Paradowska
- Department of Physical Chemistry, Physical Pharmacy and Bioanalysis, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (A.Z.); (K.P.); (M.G.)
| | - Małgorzata Gralec
- Department of Physical Chemistry, Physical Pharmacy and Bioanalysis, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (A.Z.); (K.P.); (M.G.)
| | - Sławomir Kaźmierski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland;
| | - Iwona Wawer
- Herbology Department, Carpathian State University, Rynek 1, 38-400 Krosno, Poland;
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Siudem P, Bukowicki J, Wawer I, Paradowska K. Structural studies of two capsaicinoids: dihydrocapsaicin and nonivamide. 13C and 15N MAS NMR supported by genetic algorithm and GIAO DFT calculations. RSC Adv 2020; 10:18082-18092. [PMID: 35517189 PMCID: PMC9053636 DOI: 10.1039/d0ra01320j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 02/11/2020] [Accepted: 04/29/2020] [Indexed: 11/21/2022] Open
Abstract
Capsaicinoids are alkaloid type capsaicin analogs with prospective pharmacological activity. However their solid state conformations have not been studied yet. As part of the study, cross polarization (CP) magic angle spinning (MAS) solid state 13C and 15N NMR spectra of dihydrocapsaicin (DHCAP) and nonivamide (NVA) were recorded. Solid state chemical shifts differ from their solution counterparts; remarkable differences occur for carbons C2′, C6′ and C7′ linked to C1′ in DHCAP and with methylene carbons C4–C8 in NVA. The doubling of some resonances in the spectra of solid NVA indicates that there are two molecules in the crystallographic asymmetric unit. DFT GIAO calculations of shielding constants were performed for several geometric isomers, including molecules with different orientations of aliphatic chain with respect to aromatic ring. Low-energy conformers were found by genetic algorithm methodology. Comparison of experimental 13C chemical shifts with theoretical (GIAO DFT) shielding parameters was helpful in predicting the most reliable geometry in the solid state. Cross polarization time constants TCP and relaxation times in the rotating frame TH1ρ were obtained from variable-contact cross-polarization experiments. TH1ρ are longer in the order: NVA < CAP < DHCAP. The conformations of dihydrocapsaicin and nonivamide were studied by ssNMR spectroscopy supported by theoretical DFT/GIAO and genetic algorithm calculations.![]()
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Affiliation(s)
- Paweł Siudem
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw Banacha 1 PL-02097 Warsaw Poland +48 22 5720 950 +48 22 5720 950
| | - Jarosław Bukowicki
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw Banacha 1 PL-02097 Warsaw Poland +48 22 5720 950 +48 22 5720 950
| | - Iwona Wawer
- The State Higher Vocational School Rynek 1 PL-38400 Krosno Poland
| | - Katarzyna Paradowska
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw Banacha 1 PL-02097 Warsaw Poland +48 22 5720 950 +48 22 5720 950
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Wałejko P, Bukowicki J, Dobrzycki Ł, Socha P, Paradowska K. Phenyl glycosides – Solid-state NMR, X-ray diffraction and conformational analysis using genetic algorithm. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.12.001] [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: 10/27/2022]
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Paradowska K, Polak B, Chomicki A, Ginalska G. Establishment of an effective TLC bioautographic method for the detection of Mycobacterium tuberculosis H37Ra phosphoglucose isomerase inhibition by phosphoenolpyruvate. J Enzyme Inhib Med Chem 2016; 31:1712-7. [DOI: 10.3109/14756366.2016.1151012] [Citation(s) in RCA: 8] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- Katarzyna Paradowska
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Lublin, Poland and
| | - Beata Polak
- Department of Physical Chemistry, Medical University of Lublin, Lublin, Poland
| | - Adam Chomicki
- Department of Physical Chemistry, Medical University of Lublin, Lublin, Poland
| | - Grażyna Ginalska
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Lublin, Poland and
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Skrzypczak A, Przystupa N, Zgadzaj A, Parzonko A, Sykłowska-Baranek K, Paradowska K, Nałęcz-Jawecki G. Antigenotoxic, anti-photogenotoxic and antioxidant activities of natural naphthoquinone shikonin and acetylshikonin and Arnebia euchroma callus extracts evaluated by the umu-test and EPR method. Toxicol In Vitro 2015; 30:364-72. [DOI: 10.1016/j.tiv.2015.09.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 08/24/2015] [Accepted: 09/29/2015] [Indexed: 11/25/2022]
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Bukowicki J, Wawer A, Paradowska K. Conformational Analysis of Gentiobiose Using Genetic Algorithm Search and GIAO DFT Calculations with13C CPMAS NMR as a Verification Method. J Carbohydr Chem 2015. [DOI: 10.1080/07328303.2015.1016230] [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: 10/23/2022]
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Kozielewicz P, Paradowska K, Erić S, Wawer I, Zloh M. Insights into mechanism of anticancer activity of pentacyclic oxindole alkaloids of Uncaria tomentosa by means of a computational reverse virtual screening and molecular docking approach. Monatsh Chem 2014. [DOI: 10.1007/s00706-014-1212-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Jamróz MK, Paradowska K, Zawada K, Makarova K, Kaźmierski S, Wawer I. ¹H and ¹³C NMR-based sugar profiling with chemometric analysis and antioxidant activity of herbhoneys and honeys. J Sci Food Agric 2014; 94:246-255. [PMID: 23712445 DOI: 10.1002/jsfa.6241] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 02/14/2013] [Revised: 05/10/2013] [Accepted: 05/24/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Herbhoneys, relatively new bee products, are expected to have interesting medicinal properties. However, there is still a lack of data concerning their composition and antioxidant properties. ¹H and ¹³C NMR spectroscopy coupled with chemometric analysis (PCA and PLS-DA) and antioxidant assays (DPPH-ESR and ORAC-FL) were used to study 25 samples of Polish herbhoneys and honeys. RESULTS Antioxidant activity varied among the samples. The best properties were exhibited by cocoa and instant coffee herbhoneys. The contents of total polyphenols and total carotenoids in the studied samples were found to be 70-1340 mg GAE kg⁻¹ and 0-28.05 mg kg⁻¹ respectively. No significant differences between herbhoney and honey samples were found in their sugar profiles. The PCA of ¹³C NMR spectra of the samples in DMSO-d6 resulted in sample clustering due to sucrose content. CONCLUSION Herbhoneys have similar antioxidant properties to traditional honeys, being therefore of equal nutritional value. There was a noticeable influence of the extract concentration on the observed antioxidant effect. For samples with high antioxidant activity, polyphenols were responsible for the observed effect. Sample clustering due to sucrose content in the NMR-PCA study allowed effortless detection of adulteration.
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Affiliation(s)
- Marta K Jamróz
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, PL-02-097, Warsaw, Poland
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Gubica T, Stępień DK, Ostrowski A, Pisklak DM, Temeriusz A, Głowacka E, Paradowska K, Cyrański MK. Crystal and molecular structure of nitrophenyl 2,3,4-tri-O-acetyl-β-d-xylopyranosides. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2011.10.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Wszelaki N, Paradowska K, Jamróz MK, Granica S, Kiss AK. Bioactivity-guided fractionation for the butyrylcholinesterase inhibitory activity of furanocoumarins from Angelica archangelica L. roots and fruits. J Agric Food Chem 2011; 59:9186-93. [PMID: 21786787 DOI: 10.1021/jf201971s] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Isolation and identification of the inhibitors of butyrylcholinesterase (BChE), obtained from the extracts of roots and fruits of Angelica archangelica L., are reported. Our results confirmed the weak inhibitory effect of Angelica roots on acetylcholinesterase activity. BChE inhibition was much more pronounced at a concentration of 100 μg/mL for hexane extracts and attained a higher rate than 50%. The TLC bioautography guided fractionation and spectroscopic analysis led to the isolation and identification of imperatorin from the fruit's hexane extract and of heraclenol-2'-O-angelate from the root's hexane extract. Both compounds showed significant BChE inhibition activity with IC(50) = 14.4 ± 3.2 μM and IC(50) = 7.5 ± 1.8 μM, respectively. Only C8-substituted and C5-unsubstituted furanocoumarins were active, which could supply information about the initial structures of specific BChE inhibitors.
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Affiliation(s)
- Natalia Wszelaki
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
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Jamróz MK, Paradowska K, Gliński JA, Wawer I. 13C CPMAS NMR studies and DFT calculations of triterpene xylosides isolated from Actaea racemosa. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.03.027] [Citation(s) in RCA: 3] [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: 10/18/2022]
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Ahmedova A, Marinova P, Paradowska K, Stoyanov N, Wawer I, Mitewa M. Spectroscopic aspects of the coordination modes of 2,4-dithiohydantoins: Experimental and theoretical study on copper and nickel complexes of cyclohexanespiro-5-(2,4-dithiohydantoin). Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.07.050] [Citation(s) in RCA: 8] [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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Ahmedova A, Marinova P, Paradowska K, Marinov M, Wawer I, Mitewa M. Structure of 2,4-dithiohydantoin complexes with copper and nickel: Solid-state NMR as verification method. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.02.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gubica T, Temeriusz A, Paradowska K, Ostrowski A, Klimentowska P, Cyrański MK. Single-crystal and powder X-ray diffraction and solid-state 13C NMR of p-nitrophenyl glycopyranosides, the derivatives of d-galactose, d-glucose, and d-mannose. Carbohydr Res 2009; 344:1734-44. [DOI: 10.1016/j.carres.2009.05.026] [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: 03/03/2009] [Revised: 05/20/2009] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
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Ahmedova A, Marinova P, Paradowska K, Marinov M, Mitewa M. Synthesis and characterization of copper(II) and nickel(II) complexes of (9′-fluorene)-spiro-5-dithiohydantoin. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.04.053] [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] [Indexed: 11/25/2022]
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Paradowska K, Wolniak M, Pisklak M, Gliński JA, Davey MH, Wawer I. (13)C, (15)N CPMAS NMR and GIAO DFT calculations of stereoisomeric oxindole alkaloids from Cat's Claw (Uncaria tomentosa). Solid State Nucl Magn Reson 2008; 34:202-209. [PMID: 19019638 DOI: 10.1016/j.ssnmr.2008.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2008] [Revised: 08/19/2008] [Accepted: 10/06/2008] [Indexed: 05/27/2023]
Abstract
Oxindole alkaloids, isolated from the bark of Uncaria tomentosa [Willd. ex Schult.] Rubiaceae, are considered to be responsible for the biological activity of this herb. Five pentacyclic and two tetracyclic alkaloids were studied by solid-state NMR and theoretical GIAO DFT methods. The (13)C and (15)N CPMAS NMR spectra were recorded for mitraphylline, isomitraphylline, pteropodine (uncarine C), isopteropodine (uncarine E), speciophylline (uncarine D), rhynchophylline and isorhynchophylline. Theoretical GIAO DFT calculations of shielding constants provide arguments for identification of asymmetric centers and proper assignment of NMR spectra. These alkaloids are 7R/7S and 20R/20S stereoisomeric pairs. Based on the (13)C CP MAS chemical shifts the 7S alkaloids (delta C3 70-71ppm) can be easily and conveniently distinguished from 7R (deltaC3 74.5-74.9ppm), also 20R (deltaC20 41.3-41.7ppm) from the 20S (deltaC20 36.3-38.3ppm). The epiallo-type isomer (3R, 20S) of speciophylline is characterized by a larger (15)N MAS chemical shift of N4 (64.6ppm) than the allo-type (3S, 20S) of isopteropodine (deltaN4 53.3ppm). (15)N MAS chemical shifts of N1-H in pentacyclic alkaloids are within 131.9-140.4ppm.
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Affiliation(s)
- Katarzyna Paradowska
- Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Banacha 1, Poland
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Paradowska K, Wolniak M, Fijałek Z, Wawer I. Identification and analysis of drugs in the solid state by 13C CPMAS NMR: suxamethonium chloride and hydrocortisonum (Corhydron). Acta Pol Pharm 2008; 65:295-301. [PMID: 18646548] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Cross-polarization (CP) magic angle spinning (MAS) 13C NMR spectroscopy has become a routine tool in pharmacy, employed to identify and characterize drugs in the solid phase. 13C CPMAS NMR spectra were recorded for solid hydrocortisone 21-hemisuccinate and suxamethonium chloride. White crystalline substances, such as these two drugs, can be easily distinguished; and solid-state 13NMR spectra of remarkably good quality are obtained in less than half an hour. 13C CPMAS chemical shifts for solid suxamethonium chloride and hydrocortisone sodium hemisuccinate are given, as well as cross-polarization kinetic parameters for suxamethonium chloride.
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Zielińska A, Paradowska K, Jakowski J, Wawer I. 13C CP MAS NMR and GIAO-CHF/DFT calculations of flavonoids: Morin, kaempferol, tricin, genistein, formononetin and 3,7-dihydroxyflavone. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.03.009] [Citation(s) in RCA: 22] [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: 11/16/2022]
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Affiliation(s)
- Andrzej Temeriusz
- a Department of Chemistry , Warsaw University , Pasteura 1, Warszawa , 02‐093 , Poland
| | | | - Katarzyna Paradowska
- b Department of Physical Chemistry, Faculty of Pharmacy , Medical University of Warsaw , Warsaw , 02‐097 , Poland
| | - Iwona Wawer
- b Department of Physical Chemistry, Faculty of Pharmacy , Medical University of Warsaw , Warsaw , 02‐097 , Poland
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Temeriusz A, Gubica T, Rogowska P, Paradowska K, Cyrański MK. Crystal structure and solid-state 13C NMR analysis of N-o-, N-m- and N-p-nitrophenyl-2,3,4,6-tetra-O-acetyl-β-d-glucopyranosylamines, and their N-acetyl derivatives. Carbohydr Res 2006; 341:2581-90. [PMID: 16949063 DOI: 10.1016/j.carres.2006.06.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2006] [Revised: 06/22/2006] [Accepted: 06/27/2006] [Indexed: 11/23/2022]
Abstract
The X-ray diffraction analysis of N-o-nitrophenyl-2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosylamine (1), N-m-nitrophenyl-2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosylamines, N-p-nitrophenyl-2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosylamines, and their N-acetyl derivatives was performed. The sugar moieties always adopt (4)C1 conformations, however, due to crystal packing forces they are always slightly distorted. It was found that except N-acetyl, N-m-nitrophenyl-2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosylamine (5), none of the glucopyranosylamines studied in this paper form strong hydrogen bonds in the crystal lattice. Additionally, (5) crystallizes with a molecule of water, which occupies a special crystallographic position (on the twofold axis) and links two sugar molecules by hydrogen bonds. The CP MAS NMR spectra confirmed the presence of the intermolecular hydrogen bond involving the molecule of water in (5). Moreover, it was proved that in (1) an intramolecular hydrogen bond is formed between the glycosidic linkage and the nitro group.
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Affiliation(s)
- Andrzej Temeriusz
- Department of Chemistry, Warsaw University, Pasteura 1, 02-093 Warszawa, Poland.
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Wawer I, Wolniak M, Paradowska K. Solid state NMR study of dietary fiber powders from aronia, bilberry, black currant and apple. Solid State Nucl Magn Reson 2006; 30:106-13. [PMID: 16750905 DOI: 10.1016/j.ssnmr.2006.05.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2005] [Revised: 04/21/2006] [Accepted: 05/01/2006] [Indexed: 05/10/2023]
Abstract
13C CPMAS NMR spectra of dietary fiber powders from aronia (chokeberry), bilberry, black currant and apple were recorded. The spectra are complex owing to superposition of resonances from different polysaccharides and polyphenolic compounds. Standard, dipolar dephased and the TH(1rho) partially relaxed spectra enabled the identification of several constituents: microcrystalline cellulose, pectins, lignins, cutin-like polymers and condensed tannins. The fiber powders obtained from berries contain significant amounts of anthocyanins, as indicated by their dark violet color, but not verified by chemical shifts. The anthocyanin-rich extract from aronia berries and its major components, cyanidin-3-O-galactoside and (-)epicatechin were also studied.
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Affiliation(s)
- I Wawer
- Department of Physical Chemistry, Faculty of Pharmacy, The Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland.
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Temeriusz A, Gubica T, Rogowska P, Paradowska K, Cyrański MK. Crystal structure and solid-state 13C NMR analysis of N-p-nitrophenyl-alpha-D-ribopyranosylamine, N-p-nitrophenyl-alpha-D-xylopyranosylamine, and solid-state 13C NMR analysis of N-p-nitrophenyl-2,3,4-tri-O-acetyl-beta-D-lyxopyranosylamine and N-p-nitrophenyl-2,3,4-tri-O-acetyl-alpha-L-arabinopyranosylamine. Carbohydr Res 2005; 340:2645-53. [PMID: 16199023 DOI: 10.1016/j.carres.2005.09.009] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Accepted: 09/07/2005] [Indexed: 10/25/2022]
Abstract
The X-ray diffraction analysis of N-p-nitrophenyl-alpha-D-ribopyranosylamine (1) and N-p-nitrophenyl-alpha-D-xylopyranosylamine (2) was performed. It was found that an independent part of the unit cell of compound 1 is formed by three molecules of sugar whereas the crystals of compound 2 have one molecule in the independent part of the crystal unit cell. Additionally, 1 crystallizes with one molecule of water. The solvent molecule forms an extensive hydrogen bond network with the hydroxyl groups of the sugar, and this efficiently stabilizes the crystal lattice. Contrary to 2, the sugar moieties of 1 adopt the 1C4 conformation. In the spectra of 2, N-p-nitrophenyl-2,3,4-tri-O-acetyl-beta-D-lyxopyranosylamine and N-p-nitrophenyl-2,3,4-tri-O-acetyl-alpha-L-arabinopyranosylamine the number of resonances does not exceed the number of carbon atoms in the molecules, thus indicating no polymorphism. In the spectrum of (1) the signals are split, confirming the presence of three independent molecules in the crystal unit cell.
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Affiliation(s)
- Andrzej Temeriusz
- Department of Chemistry, Warsaw University, Pasteura 1, Warszawa 02-093, Poland
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Morzycki JW, Paradowska K, Dąbrowska-Balcerzak K, Jastrzebska I, Siergiejczyk L, Wawer I. 13C NMR study of spirostanes and furostanes in solution and solid state. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2004.10.058] [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: 11/30/2022]
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Temeriusz A, Gubica T, Rogowska P, Paradowska K, Cyrański MK. Crystal structure and solid state 13C NMR analysis of nitrophenyl 2,3,4,6-tetra-O-acetyl-β-d-gluco- and d-galactopyranosides. Carbohydr Res 2005; 340:1175-84. [PMID: 15797133 DOI: 10.1016/j.carres.2005.02.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2004] [Accepted: 02/15/2005] [Indexed: 11/26/2022]
Abstract
The X-ray diffraction analysis of o-nitrophenyl 2,3,4,6-tetra-O-acetyl-beta-D-galactopyranoside (1), m-nitrophenyl 2,3,4,6-tetra-O-acetyl-beta-D-galactopyranoside, p-nitrophenyl 2,3,4,6-tetra-O-acetyl-beta-D-galactopyranoside and o-nitrophenyl 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranoside was performed. It was found that except in the case of 1, all other crystals have one molecule in the independent part of the crystal unit cell. The results support the opinion that the nitro group does not conjugate effectively with the phenyl ring. In the 13C CP MAS spectrum of 1 the signals are split, confirming the presence of two independent molecules. Similarly, the 13C CP MAS NMR spectrum of p-nitrophenyl-2,3,4,6-tetra-O-acetyl-beta-D-glucopyranoside indicated the presence of two non-equivalent molecules in the crystal unit. One of these molecules has more conformational freedom enabling rotation of the phenyl ring.
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Affiliation(s)
- Andrzej Temeriusz
- Department of Chemistry, Warsaw University, Pasteura 1, Warszawa 02-093, Poland.
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Abstract
13C cross-polarization magic angle spinning (CP/MAS) NMR data for 2,2,5,7,8-pentamethylchroman-6-ol (2), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox c) (3) and its acetate (4), 2-methoxy-2,2,5,7,8-pentamethylchroman-6-ol (5), 2-hydroxy-2,2,5,7,8-pentamethylchroman-6-ol (6) and 2,2,5,7,8-pentamethylchroman (7) are reported. A deshielding of 7.7 ppm for the carboxylic carbon was observed in solid Trolox due to formation of intermolecular hydrogen bonds within cyclic dimers. Such crystal packing permits effective cross-polarization and fast relaxation (short T1rho(H)). The impact of the proton concentration on the CP dynamics is reflected by the longer T(CP) and T1rhoH for Trolox-d2 (deuterated at mobile proton sites). The calculated GIAO RHF shielding constants are sensitive to intramolecular effects: rotation around the C-6-O bond (changes of sigma up to 8 ppm) and conformation at C-2.
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Affiliation(s)
- Stanislaw Witkowski
- University of Bialystok, Institute of Chemistry, Pilsudskiego 11/4, 15-443 Bialystok, Poland
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Abstract
13C cross-polarization magic-angle spinning NMR spectra were recorded for a series of solid coumarins. Ab initio calculations of shielding constants were performed with the use of GIAO-CHF method. The combined CPMAS NMR and theoretical approach was successful in characterizing solid-state conformations of coumarins; a relationship sigma (ppm) = -1.032 xdelta + 205.28 (R(2) = 0.9845) can be used to obtain structural information for coumarins, for which solid-state NMR or crystal structure data are not available.
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Affiliation(s)
- Teresa Zolek
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland.
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Temeriusz A, Rowińska M, Paradowska K, Wawer I. Synthesis and solid state 13C and 1H NMR analysis of new oxamide derivatives of methyl 2-amino-2-deoxy-alpha-D-glucopyranoside and ester of amino acids or dipeptides. Carbohydr Res 2003; 338:183-8. [PMID: 12526842 DOI: 10.1016/s0008-6215(02)00409-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The syntheses of new oxamide derivatives of methyl 2-amino-2-deoxy-alpha-D-glucopyranoside and amino acid or peptide esters are presented. The reaction of methyl 3,4,6-tri-O-acetyl-2-acetamido-2-deoxy-alpha-D-glucopyranoside and oxalyl chloride gave N-(methyl 3,4,6-tri-O-acetyl-2-deoxy-alpha-D-glucopyranosid-2-yl) oxamic acid chloride which on reaction with the ester of Gly, L-Ala, L-Phe, GlyGly, Gly-L-Phe and Gly-L-Ala afforded N-(methyl 3,4,6-tri-O-acetyl-2-deoxy-alpha-D-glucopyranosid-2-yl), N'-oxalyl-amino acid or dipeptide esters. The structure of the oxamides was studied using 1H, 13C NMR in solution and solid state.
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Affiliation(s)
- Andrzej Temeriusz
- Department of Chemistry, Warsaw University, Pasteura 1, Warszawa 02-093, Poland.
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Skowron E, Bakun M, Paradowska K. Partial purification and characterization of enzymes degrading trehalose in mycobacteria. Ann Univ Mariae Curie Sklodowska Med 2001; 54:285-9. [PMID: 11205777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- E Skowron
- Katedra i Zakład Biochemii, Akademii Medycznej w Lublinie
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