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Göttemann LT, Wiesler S, Sarpong R. Oxidative cleavage of ketoximes to ketones using photoexcited nitroarenes. Chem Sci 2023; 15:213-219. [PMID: 38131093 PMCID: PMC10732129 DOI: 10.1039/d3sc05414d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 11/17/2023] [Indexed: 12/23/2023] Open
Abstract
The methoxime group has emerged as a versatile directing group for a variety of C-H functionalizations. Despite its importance as a powerful functional handle, conversion of methoximes to the parent ketone, which is often desired, usually requires harsh and functional group intolerant reaction conditions. Therefore, the application of methoximes and their subsequent conversion to the corresponding ketone in a late-stage context can be problematic. Here, we present an alternative set of conditions to achieve mild and functional group tolerant conversion of methoximes to the parent ketones using photoexcited nitroarenes. The utility of this methodology is showcased in its application in the total synthesis of cephanolide D. Furthermore, mechanistic insight into this transformation obtained using isotope labeling studies as well as the analysis of reaction byproducts is provided.
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Affiliation(s)
- Lucas T Göttemann
- Department of Chemistry, Latimer Hall, University of California Berkeley California 94720 USA
| | - Stefan Wiesler
- Department of Chemistry, Latimer Hall, University of California Berkeley California 94720 USA
| | - Richmond Sarpong
- Department of Chemistry, Latimer Hall, University of California Berkeley California 94720 USA
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2
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Yadav N, Sharma C, Awasthi SK. Diversification in the synthesis of antimalarial trioxane and tetraoxane analogs. RSC Adv 2014. [DOI: 10.1039/c3ra42513d] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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3
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General methods for the preparation of 1,2,4,5-tetraoxanes – key structures for the development of peroxidic antimalarial agents. Chem Heterocycl Compd (N Y) 2012. [DOI: 10.1007/s10593-012-0969-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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4
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Kumar N, Singh R, Rawat DS. Retracted: Tetraoxanes: synthetic and medicinal chemistry perspective. Med Res Rev 2011; 31:482. [PMID: 20027667 DOI: 10.1002/med.20189] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Synthesis and in vitro antimalarial activity of tetraoxane-amine/amide conjugates. Eur J Med Chem 2011; 46:2816-27. [DOI: 10.1016/j.ejmech.2011.04.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 04/01/2011] [Accepted: 04/01/2011] [Indexed: 11/17/2022]
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7
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Synthesis and antimalarial activity of new 1,2,4,5-tetroxanes and novel alkoxy-substituted 1,2,4,5-tetroxanes derived from primary gem-dihydroperoxides. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.10.151] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Kumar N, Singh R, Rawat DS. Tetraoxanes: Synthetic and Medicinal Chemistry Perspective. Med Res Rev 2010. [PMID: 22675731 DOI: 10.1002/med.20223] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Diwan S. Rawat
- University of Delhi; Department of Chemistry; Delhi 110007 India
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Kumar N, Khan SI, Beena, Rajalakshmi G, Kumaradhas P, Rawat DS. Synthesis, antimalarial activity and cytotoxicity of substituted 3,6-diphenyl-[1,2,4,5]tetraoxanes. Bioorg Med Chem 2009; 17:5632-8. [DOI: 10.1016/j.bmc.2009.06.020] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 06/04/2009] [Accepted: 06/11/2009] [Indexed: 11/29/2022]
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Terent’ev AO, Borisov DA, Chernyshev VV, Nikishin GI. Facile and Selective Procedure for the Synthesis of Bridged 1,2,4,5-Tetraoxanes; Strong Acids As Cosolvents and Catalysts for Addition of Hydrogen Peroxide to β-Diketones. J Org Chem 2009; 74:3335-40. [DOI: 10.1021/jo900226b] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander O. Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation, Department of Chemistry, Moscow State University, 119992 Moscow, Russian Federation, and A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, 31 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Dmitry A. Borisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation, Department of Chemistry, Moscow State University, 119992 Moscow, Russian Federation, and A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, 31 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Vladimir V. Chernyshev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation, Department of Chemistry, Moscow State University, 119992 Moscow, Russian Federation, and A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, 31 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Gennady I. Nikishin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation, Department of Chemistry, Moscow State University, 119992 Moscow, Russian Federation, and A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, 31 Leninsky prosp., 119991 Moscow, Russian Federation
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Kumar N, Khan SI, Sharma M, Atheaya H, Rawat DS. Iodine-catalyzed one-pot synthesis and antimalarial activity evaluation of symmetrically and asymmetrically substituted 3,6-diphenyl[1,2,4,5]tetraoxanes. Bioorg Med Chem Lett 2009; 19:1675-7. [DOI: 10.1016/j.bmcl.2009.01.103] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 01/28/2009] [Accepted: 01/30/2009] [Indexed: 10/21/2022]
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12
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Abstract
Re(2)O(7) is a mild and efficient catalyst for the high-yielding condensation of 1,1-dihydroperoxides with ketones or aldehydes to form 1,2,4,5-tetraoxanes, including targets not easily prepared via existing methodology. When applied in tandem with a recently reported Re(VII)-catalyzed synthesis of 1,1-dihydroperoxides, the reaction provides a high-yielding one-pot conversion of ketones or aldehydes to tetraoxanes.
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Affiliation(s)
- Prasanta Ghorai
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, USA
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13
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Atheaya H, Khan SI, Mamgain R, Rawat DS. Synthesis, thermal stability, antimalarial activity of symmetrically and asymmetrically substituted tetraoxanes. Bioorg Med Chem Lett 2008; 18:1446-9. [DOI: 10.1016/j.bmcl.2007.12.069] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2007] [Revised: 12/08/2007] [Accepted: 12/28/2007] [Indexed: 10/22/2022]
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Zmitek K, Stavber S, Zupan M, Bonnet-Delpon D, Charneau S, Grellier P, Iskra J. Synthesis and antimalarial activities of novel 3,3,6,6-tetraalkyl-1,2,4,5-tetraoxanes. Bioorg Med Chem 2006; 14:7790-5. [PMID: 16919459 DOI: 10.1016/j.bmc.2006.07.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2006] [Revised: 07/27/2006] [Accepted: 07/31/2006] [Indexed: 11/18/2022]
Abstract
The oxidative system H2O2/fluorinated alcohol (TFE, HFIP) was used for direct acid- and MeReO3-catalyzed synthesis of 1,2,4,5-tetraoxanes from cyclic (C6, C7, and C12) and acyclic ketones. The influence of ring size and alkyl chain length were studied and antimalarial activities of synthetic 3,3,6,6-tetraalkyl-1,2,4,5-tetraoxanes were determined. Variations in their antimalarial activities were significant, although they share similar electrochemical properties of the peroxide bond.
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Affiliation(s)
- Katja Zmitek
- Laboratory of Organic and Bioorganic Chemistry, Jozef Stefan Institute and Faculty of Chemistry and Chemical Technology of University of Ljubljana, Jamova 39, 1000 Ljubljana, Slovenia
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Žmitek K, Stavber S, Zupan M, Bonnet-Delpon D, Iskra J. Fluorinated alcohol directed formation of dispiro-1,2,4,5-tetraoxanes by hydrogen peroxide under acid conditions. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.11.022] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Amewu R, Stachulski AV, Ward SA, Berry NG, Bray PG, Davies J, Labat G, Vivas L, O'Neill PM. Design and synthesis of orally active dispiro 1,2,4,5-tetraoxanes; synthetic antimalarials with superior activity to artemisinin. Org Biomol Chem 2006; 4:4431-6. [PMID: 17268634 DOI: 10.1039/b613565j] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unsymmetrical dispiro- and spirotetraoxanes have been designed and synthesized via acid-catalyzed cyclocondensation of bis(hydroperoxides) with ketones. Incorporation of water-soluble and polar functionalities, via reductive amination and amide bond formation, produces several analogues with low nanomolar in vitro antimalarial activity. Several analogues display an unprecedented level of oral antimalarial activity for this class of endoperoxide drug.
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Affiliation(s)
- Richard Amewu
- Department of Chemistry, University of Liverpool, PO Box 147, Liverpool, UK L69 3BX
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Affiliation(s)
- Karl Griesbaum
- Engler-Bunte-Institut, Bereich Petrochemie, Universität Karlsruhe (TH) D-76128 Karlsruhe, Germany
| | - Xuejun Liu
- Engler-Bunte-Institut, Bereich Petrochemie, Universität Karlsruhe (TH) D-76128 Karlsruhe, Germany
| | - Henning Henke
- Engler-Bunte-Institut, Bereich Petrochemie, Universität Karlsruhe (TH) D-76128 Karlsruhe, Germany
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Griesbaum K, Liu X, Kassiaris A, Scherer M. Ozonolyses ofO-Alkylated Ketoximes in the Presence of Carbonyl Groups: A Facile Access to Ozonides. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/jlac.199719970715] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Griesbaum K, Övez B, Huh TS, Dong Y. Ozonolyses ofO-methyloximes in the presence of acid derivatives: A new access to substituted ozonides. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/jlac.1995199508217] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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2-hydroxy-4,7-dimethoxy-1,4-benzoxazin-3-one (N-O-Me-DIMBOA), a possible toxic factor in corn to the southwestern corn borer. J Chem Ecol 1993; 19:531-42. [DOI: 10.1007/bf00994323] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/1992] [Accepted: 11/02/1992] [Indexed: 11/25/2022]
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