51
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Stereocomplementary Routes to Hydroxylated Nitrogen Heterocycles: Total Syntheses of Casuarine, Australine, and 7-epi-Australine. Chemistry 2013; 19:10595-604. [DOI: 10.1002/chem.201301320] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Indexed: 11/07/2022]
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52
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Lechel T, Pfrengle F, Reissig HU, Zimmer R. Three Carbons for Complexity! Recent Developments of Palladium-Catalyzed Reactions of Allenes. ChemCatChem 2013. [DOI: 10.1002/cctc.201200875] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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53
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Jasiński M, Watanabe T, Reissig HU. Samarium Diiodide Promoted Reduction of 3,6-Dihydro-2H-1,2-oxazines: Competition of 1,4-Amino Alcohol Formation and Ring Contraction to Pyrrole Derivatives. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201210] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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54
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Lechel T, Podolan G, Brusilowskij B, Schalley CA, Reissig HU. Unexpected One-Step Formation of Iodo[1,3]dioxolo[4,5-c]pyridine Derivatives by a Hofmann-Löffler-Freytag Reaction: Studies on the Synthesis of a Pyridine-Containing Macrocycle. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200564] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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55
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Qian Y, Xu X, Wang X, Zavalij PJ, Hu W, Doyle MP. Rhodium(II)- and copper(II)-catalyzed reactions of enol diazoacetates with nitrones: metal carbene versus Lewis acid directed pathways. Angew Chem Int Ed Engl 2012; 51:5900-3. [PMID: 22566213 DOI: 10.1002/anie.201202525] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Yu Qian
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
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56
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Qian Y, Xu X, Wang X, Zavalij PJ, Hu W, Doyle MP. Rhodium(II)- and Copper(II)-Catalyzed Reactions of Enol Diazoacetates with Nitrones: Metal Carbene versus Lewis Acid Directed Pathways. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202525] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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57
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Jasiński M, Lentz D, Moreno-Clavijo E, Reissig HU. Application of L-Erythrose-Derived Nitrones in the Synthesis of Polyhydroxylated Compounds via 3,6-Dihydro-2H-1,2-oxazine Derivatives. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200158] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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58
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Jasiński M, Lentz D, Reissig HU. Carbohydrate-auxiliary assisted preparation of enantiopure 1,2-oxazine derivatives and aminopolyols. Beilstein J Org Chem 2012; 8:662-74. [PMID: 23015812 PMCID: PMC3388852 DOI: 10.3762/bjoc.8.74] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Accepted: 03/28/2012] [Indexed: 11/23/2022] Open
Abstract
An approach to enantiopure hydroxylated 2H-1,2-oxazine derivatives is presented utilizing the [3 + 3] cyclisation of lithiated alkoxyallenes and an L-erythrose-derived N-glycosyl nitrone as precursors. This key step proceeded only with moderate diastereoselectivity, but allowed entry into both enantiomeric series of the resulting 3,6-dihydro-2H-1,2-oxazines. Their enol ether double bond was then subjected to a hydroboration followed by an oxidative work-up, and finally the auxiliary was removed. The described three-step procedure enabled the synthesis of enantiopure hydroxylated 1,2-oxazines. Typical examples were treated with samarium diiodide leading to enantiopure acyclic aminopolyols. We also report on our attempts to convert these compounds into enantiopure hydroxylated pyrrolidine derivatives.
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Affiliation(s)
- Marcin Jasiński
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, PL-91-403 Poland
| | - Dieter Lentz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
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59
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Allenes in Catalytic Asymmetric Synthesis and Natural Product Syntheses. Angew Chem Int Ed Engl 2012; 51:3074-112. [DOI: 10.1002/anie.201101460] [Citation(s) in RCA: 758] [Impact Index Per Article: 63.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Indexed: 02/06/2023]
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60
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Yu S, Ma S. Allene in katalytischer asymmetrischer Synthese und Naturstoffsynthese. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201101460] [Citation(s) in RCA: 254] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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61
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Nebot J, Romea P, Urpí F. Stereoselective synthesis of protected 3-amino-3,6-dideoxyaminosugars. Org Biomol Chem 2012; 10:6395-403. [DOI: 10.1039/c2ob25793a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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62
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Lopes SM, Palacios F, Lemos A, Pinho e Melo TM. Diels–Alder reactions of 3-(1H-tetrazol-5-yl)-nitrosoalkenes: synthesis of functionalized 5-(substituted)-1H-tetrazoles. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.051] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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63
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Lechel T, Gerhard M, Trawny D, Brusilowskij B, Schefzig L, Zimmer R, Rabe JP, Lentz D, Schalley CA, Reissig HU. Synthesis of 5-Acetyloxazoles and 1,2-Diketones from β-Alkoxy-β-ketoenamides and Their Subsequent Transformations. Chemistry 2011; 17:7480-91. [DOI: 10.1002/chem.201100382] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Indexed: 11/06/2022]
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64
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Saha J, Peczuh MW. Expanding the Scope of Aminosugars: Synthesis of 2‐Amino Septanosyl Glycoconjugates Using Septanosyl Fluoride Donors. Chemistry 2011; 17:7357-65. [DOI: 10.1002/chem.201003721] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 03/21/2011] [Indexed: 01/25/2023]
Affiliation(s)
- Jaideep Saha
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U‐3060, Storrs, CT 06269 (USA), Fax: (+1) 860‐486‐2981
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U‐3060, Storrs, CT 06269 (USA), Fax: (+1) 860‐486‐2981
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65
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Dekaris V, Pulz R, Al-Harrasi A, Lentz D, Reissig HU. Stereoselective Syntheses of Aza, Amino and Imino Sugar Derivatives by Hydroboration of 3,6-Dihydro-2H-1,2-oxazines as Key Reaction. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100230] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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66
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Lopez M, Bornaghi LF, Driguez H, Poulsen SA. Synthesis of sulfonamide-bridged glycomimetics. J Org Chem 2011; 76:2965-75. [PMID: 21401206 DOI: 10.1021/jo2001269] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A flexible and short synthesis of sulfonamide-bridged di-, tri-, tetra-, and octasaccharide glycomimetics was accomplished by reaction of glycosyl thioacetates with amino sugar substrates. The chemistry to incorporate the sulfonamide linker in place of a native O-glycosidic bond was broadly scoped, allowing access to head-to-head (1↔1) and head-to-tail (1→2), (1→3), (1→4), and (1→6) sulfonamide-bridged glycomimetics. The synthesis proceeds with retention of configuration at the anomeric center and is compatible with variable stereochemical arrangements and with acid- and base-labile protecting groups.
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Affiliation(s)
- Marie Lopez
- Eskitis Institute, Griffith University, Nathan Campus, Queensland, 4111, Australia
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67
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Roskamp M, Enders S, Pfrengle F, Yekta S, Dekaris V, Dernedde J, Reissig HU, Schlecht S. Multivalent interaction and selectivities in selectin binding of functionalized gold colloids decorated with carbohydrate mimetics. Org Biomol Chem 2011; 9:7448-56. [DOI: 10.1039/c1ob05583f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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68
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Saget T, Cramer N. Heteroatom-Nucleophile-Induced CC Fragmentations: Synthesis of Allenes and Entry to Domino Reactions. Angew Chem Int Ed Engl 2010; 49:8962-5. [DOI: 10.1002/anie.201004795] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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69
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Pfrengle F, Reissig H. Internally Protected Amino Sugar Equivalents from Enantiopure 1,2‐Oxazines: Synthesis of Variably Configured Carbohydrates with C‐Branched Amino Sugar Units. Chemistry 2010; 16:11915-25. [DOI: 10.1002/chem.201001060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fabian Pfrengle
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany), Fax: (+49) 30‐83855367
| | - Hans‐Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany), Fax: (+49) 30‐83855367
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70
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Pfrengle F, Reissig HU. Addition of lithiated enol ethers to nitrones and subsequent Lewis acid induced cyclizations to enantiopure 3,6-dihydro-2H-pyrans - an approach to carbohydrate mimetics. Beilstein J Org Chem 2010; 6:75. [PMID: 20703374 PMCID: PMC2919261 DOI: 10.3762/bjoc.6.75] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Accepted: 06/08/2010] [Indexed: 01/10/2023] Open
Abstract
A stereodivergent synthesis of enantiopure 3,6-dihydro-2H-pyrans is presented. The addition of lithiated enol ethers to carbohydrate-derived nitrones afforded syn- or anti-configured hydroxylamine derivatives 4a-d that were cyclized under Lewis acidic conditions to yield functionalized dihydropyrans cis- or trans-5a-d containing an enol ether moiety. This functional group was employed for a variety of subsequent reactions such as dihydroxylation or bromination. Bicyclic enol ether 19 was oxidatively cleaved to provide the highly functionalized ten-membered ring lactone 20. The synthesized enantiopure aminopyrans 24, 26, 28 and 30 can be regarded as carbohydrate mimetics. Trimeric versions of 24 and 28 were constructed via their attachment to a tricarboxylic acid core.
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Affiliation(s)
- Fabian Pfrengle
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustrasse 3, D-14195 Berlin, Germany
| | - Hans-Ulrich Reissig
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustrasse 3, D-14195 Berlin, Germany
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71
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Albrecht Ł, Jiang H, Dickmeiss G, Gschwend B, Hansen SG, Jørgensen KA. Asymmetric Formal trans-Dihydroxylation and trans-Aminohydroxylation of α,β-Unsaturated Aldehydes via an Organocatalytic Reaction Cascade. J Am Chem Soc 2010; 132:9188-96. [DOI: 10.1021/ja103538s] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Łukasz Albrecht
- Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Hao Jiang
- Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Gustav Dickmeiss
- Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Björn Gschwend
- Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Signe Grann Hansen
- Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Karl Anker Jørgensen
- Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
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72
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Zimmer R, Buchholz M, Collas M, Angermann J, Homann K, Reissig HU. 1,2-Oxazines as Building Blocks for Stereoselective Synthesis: Preparation of Oxygen-Substituted 1,2-Oxazines, either by Alcohol Addition or by Epoxidation, and Subsequent Hydrogenation Leading to 1,2-Amino Alcohols and Pyrrolidines. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000425] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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73
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Lechel T, Reissig HU. New 5-Alkoxypyrimidine Derivatives from β-Alkoxy β-Keto Enamides and Ammonium Salts. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000056] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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74
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Lechel T, Brüdgam I, Reissig HU. Preparation of pyridine-3,4-diols, their crystal packing and their use as precursors for palladium-catalyzed cross-coupling reactions. Beilstein J Org Chem 2010; 6:42. [PMID: 20502600 PMCID: PMC2874341 DOI: 10.3762/bjoc.6.42] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Accepted: 04/09/2010] [Indexed: 11/24/2022] Open
Abstract
A series of trifluoromethyl-substituted 3-alkoxypyridinol derivatives has been deprotected to furnish pyridine-3,4-diol derivatives in good yields. The X-ray crystal structure analysis proved that a 1:1 mixture of pyridine-3,4-diols and their pyridin-4-one tautomers exist in the solid state. Subsequent conversion into bis(perfluoroalkanesulfonate)s were smoothly achieved. The obtained compounds were used as substrates for palladium-catalyzed coupling reactions. Fluorescence measurements of the biscoupled products showed a maximum of emission in the violet region of the spectrum.
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Affiliation(s)
- Tilman Lechel
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustrasse 3, D-14195 Berlin, Germany
| | - Irene Brüdgam
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustrasse 3, D-14195 Berlin, Germany
| | - Hans-Ulrich Reissig
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustrasse 3, D-14195 Berlin, Germany
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75
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Lechel T, Dash J, Eidamshaus C, Brüdgam I, Lentz D, Reissig HU. A three-component synthesis of β-alkoxy-β-keto-enamides—flexible precursors for 4-hydroxypyridine derivatives and their palladium-catalysed reactions. Org Biomol Chem 2010; 8:3007-14. [PMID: 20473437 DOI: 10.1039/b925468d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Tilman Lechel
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany
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