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Humpl M, Tauchman J, Topolovčan N, Kretschmer J, Hessler F, Císařová I, Kotora M, Veselý J. Stereoselective Synthesis of Ezetimibe via Cross-Metathesis of Homoallylalcohols and α-Methylidene-β-Lactams. J Org Chem 2016; 81:7692-9. [DOI: 10.1021/acs.joc.6b01406] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marek Humpl
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
| | - Jiří Tauchman
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
| | - Nikola Topolovčan
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
| | - Jan Kretschmer
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
| | - Filip Hessler
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
| | - Ivana Císařová
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
| | - Martin Kotora
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry,
Faculty of Science and ‡Department of Inorganic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Praha 2, Czech Republic
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Šnajdr I, Parkan K, Hessler F, Kotora M. Cross-metathesis reaction of α- and β-vinyl C-glycosides with alkenes. Beilstein J Org Chem 2015; 11:1392-7. [PMID: 26425194 PMCID: PMC4578437 DOI: 10.3762/bjoc.11.150] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 07/20/2015] [Indexed: 12/20/2022] Open
Abstract
Cross-metathesis of α- and β-vinyl C-deoxyribosides and α-vinyl C-galactoside with various terminal alkenes under different conditions was studied. The cross-metathesis of the former proceeded with good yields of the corresponding products in ClCH2CH2Cl the latter required the presence of CuI in CH2Cl2 to achieve good yields of the products. A simple method for the preparation of α- and β-vinyl C-deoxyribosides was also developed. In addition, feasibility of deprotection and further transformations were briefly explored.
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Affiliation(s)
- Ivan Šnajdr
- Department of Organic Chemistry, Charles University in Prague, Hlavova 8, 153 00 Praha 2, Czech Republic
| | - Kamil Parkan
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, 160 00 Praha 6, Czech Republic
| | - Filip Hessler
- Department of Organic Chemistry, Charles University in Prague, Hlavova 8, 153 00 Praha 2, Czech Republic
| | - Martin Kotora
- Department of Organic Chemistry, Charles University in Prague, Hlavova 8, 153 00 Praha 2, Czech Republic
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Kaiser RP, Hessler F, Mosinger J, Císařová I, Kotora M. Inside Cover: A [2+2+2]-Cyclotrimerization Approach to Selectively Substituted Fluorenes and Fluorenols, and Their Conversion to 9,9′-Spirobifluorenes (Chem. Eur. J. 39/2015). Chemistry 2015. [DOI: 10.1002/chem.201583902] [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: 11/06/2022]
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Kaiser RP, Hessler F, Mosinger J, Císařová I, Kotora M. A [2+2+2]-Cyclotrimerization Approach to Selectively Substituted Fluorenes and Fluorenols, and Their Conversion to 9,9′-Spirobifluorenes. Chemistry 2015; 21:13577-82. [DOI: 10.1002/chem.201502370] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Indexed: 11/09/2022]
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Hessler F, Betík R, Kadlčíková A, Belle R, Kotora M. Enantioselective Allylation of Selectedortho-Substituted Benzaldehydes: A Comparative Study. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Affiliation(s)
- Filip Hessler
- a Charles University in Prague, Faculty of Science , Department of Organic Chemistry , Prague , Czech Republic
| | - Lucie Kulhavá
- a Charles University in Prague, Faculty of Science , Department of Organic Chemistry , Prague , Czech Republic
| | - Ivana Císarˇová
- b Charles University in Prague, Faculty of Science , Department of Inorganic Chemistry , Prague , Czech Republic
| | - Miroslav Otmar
- c Institute of Organic Chemistry and Biochemistry , Academy of Sciences of the Czech Republic , Prague , Czech Republic
| | - Martin Kotora
- a Charles University in Prague, Faculty of Science , Department of Organic Chemistry , Prague , Czech Republic
- c Institute of Organic Chemistry and Biochemistry , Academy of Sciences of the Czech Republic , Prague , Czech Republic
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Hessler F, Korotvička A, Nečas D, Valterová I, Kotora M. Syntheses of a Flobufen Metabolite and Dapoxetine Based on Enantioselective Allylation of Aromatic Aldehydes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301899] [Citation(s) in RCA: 14] [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: 11/06/2022]
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Hessler F, Císařová I, Sedlák D, Bartůněk P, Kotora M. Synthesis of Ferrocenestrone: the First Metallocene Based Steroid Analogue. Chemistry 2012; 18:5515-8. [DOI: 10.1002/chem.201200687] [Citation(s) in RCA: 8] [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] [Received: 03/01/2012] [Indexed: 12/16/2022]
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Affiliation(s)
- Martin Kotora
- Dept. of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12843 Praha 2, Czech Republic, Fax: +420‐221‐951‐326
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, v.v.i., Flemingovo nám. 2, 166 10 Praha 6, Czech Republic
| | - Filip Hessler
- Dept. of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12843 Praha 2, Czech Republic, Fax: +420‐221‐951‐326
| | - Barbara Eignerová
- Dept. of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12843 Praha 2, Czech Republic, Fax: +420‐221‐951‐326
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Hessler F. Better investor relations. A financier outlines some ways health care organizations can improve their access to capital. Health Forum J 2001; 44:suppl 10-1. [PMID: 11372273] [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: 04/16/2023]
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Hessler F. Want capital? Try a new approach. Health Forum J 2000; 43:suppl 10-1. [PMID: 11010146] [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: 02/17/2023]
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Lupp A, Hessler F, Philipp T, Danz M, Klinger W. Influence of different transplantation methods on liver cell survival in spleens of rats. Exp Toxicol Pathol 1998; 50:1-8. [PMID: 9570494 DOI: 10.1016/s0940-2993(98)80050-x] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Isolated hepatocytes, liver tissue suspensions, or liver tissue cylinders from biopsies were transplanted into the spleens of adult male rats. Donors were syngenic fetuses, syngenic or allogenic adult rats, or autologous material was obtained from the rat's own liver. The outcome of the different transplantation procedures was evaluated at 1 and 6 months after surgery. Additionally the influence of a 30% hepatectomy (HX) on the result of the transplantation was investigated. When fetal material was transplanted, the best results in sequence with respect to the number of viable hepatocytes within the spleens were obtained (1) after transplantation of syngenic fetal liver tissue suspensions, (2) syngenic fetal liver tissue cylinders and (3) syngenic fetal isolated hepatocytes. HX only improved the results with transplantation of syngenic fetal isolated hepatocytes. After transplantation of syngenic fetal liver tissue suspensions and isolated hepatocytes, but not after transplantation of syngenic fetal liver tissue cylinders, the number of hepatocytes was higher at 6 months than at 1 month after surgery. Concerning syngenic adult liver material, only transplantation of isolated hepatocytes lead to a remarkable and increasing number of surviving hepatocytes at both 1 and 6 months after surgery. These results were further improved by HX. With syngenic adult liver, the other transplantation methods yielded no or nearly no viable hepatocytes in the spleens. In comparison to the results after transplantation of syngenic fetal liver tissue suspensions, transplantation of syngenic adult isolated hepatocytes was less efficient, but still yielded more viable hepatocytes than the transplantation of syngenic fetal isolated hepatocytes. After transplantation of autologous liver tissue suspensions, autologous liver tissue cylinders or allogenic adult liver material only few surviving hepatocytes were observed. At 1 month after transplantation of syngenic fetal liver material, syngenic adult isolated hepatocytes or autologous liver tissue cylinders into the spleens 40-80% of the explants consisted of bile ducts independent from the transplantation method. At 6 months after surgery the bile ducts were much less and in some cases no longer visible. After transplantation of autologous liver tissue suspensions or allogenic adult liver material only very few bile ducts were seen, but anyhow in those cases only poor results were obtained. Thus, with respect to transplantation outcome and long-term liver cell survival, intrasplenic transplantation of both syngenic fetal liver tissue suspensions and syngenic adult isolated hepatocytes seem to be the most suitable methods and should be chosen for further investigations on explant morphology and function.
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Affiliation(s)
- A Lupp
- Institute of Pharmacology and Toxicology, Friedrich Schiller University Jena, Germany
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