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Peřina M, Börzsei R, Henrietta Ágoston, Hlogyik T, Poór M, Rigó R, Özvegy-Laczka C, Batta G, Hetényi C, Vojáčková V, Jorda R, Mernyák E. Synthesis and estrogenic activity of BODIPY-labeled estradiol conjugates. Eur J Pharm Sci 2024; 199:106813. [PMID: 38797442 DOI: 10.1016/j.ejps.2024.106813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024]
Abstract
Novel BODIPY-estradiol conjugates have been synthesized by selecting position C-3-O for labeling. The conjugation strategy was based on Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) or etherification. Estradiol derivatives used as azide partners bearing an ω-azidoalkyl function through C4-C8-long linkers have been prepared. CuAAC reactions of estradiol azides with BODIPY alkyne furnished fluorescent 3-O-labeled conjugates bearing the triazole ring as a coupling moiety. Williamson etherifications of 3-O-(ω-bromoalkyl)-17β-estradiol derivatives with BODIPY-OH resulted in labeled conjugates connected with an ether moiety. Interactions of the conjugates with estrogen receptor (ER) were investigated using molecular docking calculations in comparison with estradiol. The conjugates occupied both the classical and alternative binding sites on human ERα, with slightly lower binding affinity to references estradiol and diethystilbestrol. All compounds have displayed reasonable estrogenic activity. They increased the proliferation of ER-positive breast cancer cell line MCF7 contrary to ER-negative SKBR-3 cell line. The most potent compound 13a induced the transcriptional activity of ER in dose-dependent manner in dual luciferase recombinant reporter model and increased progesterone receptor's expression, proving the retained estrogenic activity. The fluorescence of candidate compound 13a co-localised with the ERα. The newly synthesized labeled compounds might serve as good starting point for further development of fluorescent probes for modern biological applications. In addition to studying steroid uptake and transport in cells, e.g. in the processes of biodegradation of estrogen-hormones micropollutants, they could also be utilized in examination of estrogen-binding proteins.
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Affiliation(s)
- Miroslav Peřina
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27 78371 Olomouc, Czech Republic
| | - Rita Börzsei
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Szigeti út 12 H-7624 Pécs, Hungary
| | - Henrietta Ágoston
- Department of Inorganic, Organic and Analytical Chemistry, University of Szeged, Dóm tér 7‒8 H-6720 Szeged, Hungary
| | - Tamás Hlogyik
- Department of Inorganic, Organic and Analytical Chemistry, University of Szeged, Dóm tér 7‒8 H-6720 Szeged, Hungary
| | - Miklós Poór
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság útja 13, Pécs H-7624, Hungary; Molecular Medicine Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, Pécs H-7624, Hungary
| | - Réka Rigó
- Drug resistance research group, Institute of Enzymology, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Csilla Özvegy-Laczka
- Drug resistance research group, Institute of Enzymology, Research Centre for Natural Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
| | - Gyula Batta
- Department of Organic Chemistry, University of Debrecen, Egyetem tér 1 H-4032 Debrecen, Hungary
| | - Csaba Hetényi
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Szigeti út 12 H-7624 Pécs, Hungary
| | - Veronika Vojáčková
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27 78371 Olomouc, Czech Republic
| | - Radek Jorda
- Department of Experimental Biology, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27 78371 Olomouc, Czech Republic.
| | - Erzsébet Mernyák
- Department of Inorganic, Organic and Analytical Chemistry, University of Szeged, Dóm tér 7‒8 H-6720 Szeged, Hungary; Department of Pharmacognosy, University of Szeged, Eötvös u. 6 H-6720 Szeged, Hungary.
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Cell Uptake of Steroid-BODIPY Conjugates and Their Internalization Mechanisms: Cancer Theranostic Dyes. Int J Mol Sci 2023; 24:ijms24043600. [PMID: 36835012 PMCID: PMC9963437 DOI: 10.3390/ijms24043600] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/28/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Estradiol-BODIPY linked via an 8-carbon spacer chain and 19-nortestosterone- and testosterone-BODIPY linked via an ethynyl spacer group were evaluated for cell uptake in the breast cancer cell lines MCF-7 and MDA-MB-231 and prostate cancer cell lines PC-3 and LNCaP, as well as in normal dermal fibroblasts, using fluorescence microscopy. The highest level of internalization was observed with 11β-OMe-estradiol-BODIPY 2 and 7α-Me-19-nortestosterone-BODIPY 4 towards cells expressing their specific receptors. Blocking experiments showed changes in non-specific cell uptake in the cancer and normal cells, which likely reflect differences in the lipophilicity of the conjugates. The internalization of the conjugates was shown to be an energy-dependent process that is likely mediated by clathrin- and caveolae-endocytosis. Studies using 2D co-cultures of cancer cells and normal fibroblasts showed that the conjugates are more selective towards cancer cells. Cell viability assays showed that the conjugates are non-toxic for cancer and/or normal cells. Visible light irradiation of cells incubated with estradiol-BODIPYs 1 and 2 and 7α-Me-19-nortestosterone-BODIPY 4 induced cell death, suggesting their potential for use as PDT agents.
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Spivak AY, Davletshin EV, Gubaidullin RR, Tukhbatullin AA, Nedopekina DA. Synthesis of Bodipy-Labeled Fluorescent Betulinic Acid Derivatives with a Terminal Triphenylphosphonium Group on Side-Chain C-28. Chem Nat Compd 2022. [DOI: 10.1007/s10600-022-03869-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Gai L, Sun W. Recent advances in estrogen receptor-targeted probes conjugated to BODIPY dyes. Steroids 2022; 183:109031. [PMID: 35381270 DOI: 10.1016/j.steroids.2022.109031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 03/19/2022] [Accepted: 03/31/2022] [Indexed: 02/06/2023]
Abstract
Estrogens, is a class of steroid hormones associated with the occurrence and development of breast cancer, that bind to estrogen receptors (ER). The development of BODIPY-based fluorescent ligands for the ER has continued to gain tremendous attention over the past 20 years. This review focuses on the synthesis methods, optical properties, and biological activity of BODIPY fluorescent probes conjugated to ER ligands. These will provide new strategy for designing fluorescent probes for targeting estrogen receptors.
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Affiliation(s)
- Linlin Gai
- Central Laboratory, Weifang People's Hospital, Weifang, Shandong 261041, PR China.
| | - Weice Sun
- Vascular Surgery, Weifang Traditional Chinese Hospital, Weifang, Shandong 261041, PR China
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Hu C, Wen L, Chen X, Yan J, Zheng K, Liu X, Zhang N. Pyrrolizinone‐Fused BOPYINs: Characterization and Selective C‐O Bond Formation Mechanism. ChemistrySelect 2021. [DOI: 10.1002/slct.202102259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cong Hu
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Liu Wen
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Xi Chen
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Jiaying Yan
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Kaibo Zheng
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Xiang Liu
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Nuonuo Zhang
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
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Shamova LI, Zatsikha YV, Nemykin VN. Synthesis pathways for the preparation of the BODIPY analogues: aza-BODIPYs, BOPHYs and some other pyrrole-based acyclic chromophores. Dalton Trans 2021; 50:1569-1593. [DOI: 10.1039/d0dt03964k] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This mini-review summarizes the synthesis strategies for the preparation and post-functionalization of aza-BODIPYs, BOPHYs, “half-Pcs”, biliazines, MB-DIPYs, semihemiporphyrazines, BOIMPYs, BOPPYs, BOPYPYs, BOAHYs, and BOAPYs.
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Affiliation(s)
| | | | - Victor N. Nemykin
- Department of Chemistry
- University of Manitoba
- Winnipeg
- Canada
- Department of Chemistry
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Miao W, Feng Y, Wu Q, Sheng W, Li M, Liu Q, Hao E, Jiao L. Phenanthro[b]-Fused BODIPYs through Tandem Suzuki and Oxidative Aromatic Couplings: Synthesis and Photophysical Properties. J Org Chem 2019; 84:9693-9704. [DOI: 10.1021/acs.joc.9b01425] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wei Miao
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yuanmei Feng
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Qinghua Wu
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Wanle Sheng
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Mao Li
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Qingyun Liu
- College of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, China
| | - Erhong Hao
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Lijuan Jiao
- Laboratory of Functional Molecular Solids, Ministry of Education, School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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Sun Y, Gai L, Wang Y, Qu Z, Lu H. Dithienosilole extended BODIPYs: Synthesis and spectroscopic properties. J PORPHYR PHTHALOCYA 2019. [DOI: 10.1142/s1088424619500366] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
3,/3,5-Dithienosilole-vinyl-BODIPYs were readily synthesized through Knoevenagel condensation reactions. Spectroscopic properties of two dyes in various solvents were investigated. Dyes 1 and 2 show an absorption maxima at 620 and 738 nm with absorption coefficient of 60900 and 77900 [Formula: see text] cm[Formula: see text] in DCM, respectively. Significant red shifts of the main spectral bands are observed relative to that of the parent 1,3,5,7-tetramethyl-BODIPY. TD-DFT calculations reproduce the spectral shifts and experimental spectra.
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Affiliation(s)
- Yijuan Sun
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Lizhi Gai
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Yitong Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Zhirong Qu
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Hua Lu
- Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
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Bacsa I, Konc C, Orosz AB, Kecskeméti G, Rigó R, Özvegy-Laczka C, Mernyák E. Synthesis of Novel C-2- or C-15-Labeled BODIPY-Estrone Conjugates. Molecules 2018; 23:E821. [PMID: 29614041 PMCID: PMC6017578 DOI: 10.3390/molecules23040821] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 11/16/2022] Open
Abstract
Novel BODIPY-estrone conjugates were synthesized via Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC). Estrone-alkynes or an estrone-azide as starting compounds were synthesized via Michael addition or Sonogashira reaction as key steps. Fluorescent dyes based on BODIPY-core were provided by azide or alkyne functional groups. Fluorescent labeling of estrone was efficiently achieved at the C-2 or C-15 position. The newly-elaborated coupling procedures might have a broad applicability in the synthesis of fluorescent-labeled estrone conjugates suitable for biological assays.
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Affiliation(s)
- Ildikó Bacsa
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Csilla Konc
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Anna Boglárka Orosz
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Gábor Kecskeméti
- Department of Medicinal Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
| | - Réka Rigó
- Membrane protein research group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary.
| | - Csilla Özvegy-Laczka
- Membrane protein research group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary.
| | - Erzsébet Mernyák
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary.
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Kazan HH, Özcan E, Eçik ET, Çoşut B. Novel 17α-Etinylestradiol-Substituted BODIPY Dyes: Synthesis, Photophysical Properties and Fluorescence Imaging Studies in Breast Cancer Cell Lines. ChemistrySelect 2018. [DOI: 10.1002/slct.201800030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hasan H. Kazan
- Department of Biological Sciences; Graduate School of Natural and Applied Sciences; Middle East Technical University; Dumlupınar Bulvarı No:1 06800 Çankaya Ankara Turkey
| | - Emrah Özcan
- Department of Chemistry; Faculty of Science; Gebze Technical University; Fabrikalar Street, P.O.Box: 141 Gebze 41400 Kocaeli Turkey
| | - Esra T. Eçik
- Department of Chemistry; Faculty of Science; Gebze Technical University; Fabrikalar Street, P.O.Box: 141 Gebze 41400 Kocaeli Turkey
| | - Bünyemin Çoşut
- Department of Chemistry; Faculty of Science; Gebze Technical University; Fabrikalar Street, P.O.Box: 141 Gebze 41400 Kocaeli Turkey
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Osati S, Ali H, Guérin B, van Lier JE. Steroid-photosensitizer conjugates: Syntheses and applications. J PORPHYR PHTHALOCYA 2018. [DOI: 10.1142/s108842461730004x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This review focuses on progress in the development of different approaches to the design of steroid ([Formula: see text] estrogens, androgens, cholesterol) conjugates with coordination assemblies of metalloporphyrins, phthalocyanines and related complexes. Porphyrins and phthalocyanines have received considerable attention due to their novel composition, intriguing spectroscopic, photophysical, and redox properties, and potential application in light-harvesting and optoelectronic devices. With the development of more efficient imaging and therapeutic applications, these bio-conjugates are evaluated as multimodality agents (PET, fluorescence imaging) to monitor the mechanism of action of biologically active components in living systems and as agents for molecular recognition, oxygen atom transfer and catalysis. The tetrapyrrole components, which can be coupled via covalent and various non-covalent linkages, may exhibit strong interactions through efficient photo-induced electron and/or energy transfer processes.
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Affiliation(s)
- Samira Osati
- Department of nuclear medicine and radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada J1H5N4
| | - Hasrat Ali
- Department of nuclear medicine and radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada J1H5N4
| | - Brigitte Guérin
- Department of nuclear medicine and radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada J1H5N4
| | - Johan E. van Lier
- Department of nuclear medicine and radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada J1H5N4
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Škorpilová L, Rimpelová S, Jurášek M, Buděšínský M, Lokajová J, Effenberg R, Slepička P, Ruml T, Kmoníčková E, Drašar PB, Wimmer Z. BODIPY-based fluorescent liposomes with sesquiterpene lactone trilobolide. Beilstein J Org Chem 2017; 13:1316-1324. [PMID: 28781697 PMCID: PMC5530629 DOI: 10.3762/bjoc.13.128] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/20/2017] [Indexed: 12/21/2022] Open
Abstract
Like thapsigargin, which is undergoing clinical trials, trilobolide is a natural product with promising anticancer and anti-inflammatory properties. Similar to thapsigargin, it has limited aqueous solubility that strongly reduces its potential medicinal applications. The targeted delivery of hydrophobic drugs can be achieved using liposome-based carriers. Therefore, we designed a traceable liposomal drug delivery system for trilobolide. The fluorescent green-emitting dye BODIPY, cholesterol and trilobolide were used to create construct 6. The liposomes were composed of dipalmitoyl-3-trimethylammoniumpropane and phosphatidylethanolamine. The whole system was characterized by atomic force microscopy, the average size of the liposomes was 150 nm in width and 30 nm in height. We evaluated the biological activity of construct 6 and its liposomal formulation, both of which showed immunomodulatory properties in primary rat macrophages. The uptake and intracellular distribution of construct 6 and its liposomal formulation was monitored by means of live-cell fluorescence microscopy in two cancer cell lines. The encapsulation of construct 6 into the liposomes improved the drug distribution in cancer cells and was followed by cell death. This new liposomal trilobolide derivative not only retains the biological properties of pure trilobolide, but also enhances the bioavailability, and thus has potential for the use in theranostic applications.
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Affiliation(s)
- Ludmila Škorpilová
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic.,Institute of Experimental Botany, ASCR, Vídeňská 1083, 142 20 Prague 4, Czech Republic
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Michal Jurášek
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Miloš Buděšínský
- Institute of Organic Chemistry and Biochemistry, ASCR, Flemingovo n. 2, 166 10 Prague 6, Czech Republic
| | - Jana Lokajová
- Institute of Organic Chemistry and Biochemistry, ASCR, Flemingovo n. 2, 166 10 Prague 6, Czech Republic
| | - Roman Effenberg
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Petr Slepička
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Tomáš Ruml
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Eva Kmoníčková
- Institute of Experimental Medicine, ASCR, Vídeňská 1083, 142 20 Prague 4, Czech Republic.,Charles University, Faculty of Medicine in Pilsen, Alej Svobody 76, 323 00 Pilsen, Czech Republic
| | - Pavel B Drašar
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Zdeněk Wimmer
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic.,Institute of Experimental Botany, ASCR, Vídeňská 1083, 142 20 Prague 4, Czech Republic
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