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Krout MR, Henry CE, Jensen T, Wu KL, Virgil SC, Stoltz BM. Wolff/Cope Approach to the AB Ring of the Sesterterpenoid Variecolin. J Org Chem 2018; 83:6995-7009. [PMID: 29298482 PMCID: PMC6035096 DOI: 10.1021/acs.joc.7b02972] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A stereoselective synthesis of the AB ring of the complex sesterterpenoid variecolin is presented. Our strategy features the development of a tandem Wolff/Cope rearrangement of α-diazo cyclobutyl ketones for the construction of fused, 8-membered carbocycles. Preliminary studies revealed a facile Wolff rearrangement but a difficult vinyl ketene cyclobutane Cope rearrangement. We have leveraged an efficient microwave-promoted tandem rearrangement to prepare the desired functionalized cyclooctadienones that we envision as potential key intermediates in the convergent synthesis of variecolin.
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Affiliation(s)
- Michael R Krout
- Department of Chemistry , Bucknell University , Lewisburg , Pennsylvania 17837 , United States
| | - Christopher E Henry
- Process Chemistry , Achaogen, Inc. , South San Francisco , California 94080 , United States
| | - Thomas Jensen
- Discovery Chemistry and DMPK , Neuroscience Drug Discovery , H. Lundbeck A/S , 2500 Valby , Denmark
| | - Kun-Liang Wu
- Process Chemistry , Seattle Genetics , Bothell , Washington 98021 , United States
| | - Scott C Virgil
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
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Montaña ÁM, Corominas A, Chesa JF, García F, Font-Bardia M. Regio- and Stereoselective Synthesis of Acetallic Tetrahydropyrans as Building Blocks for Natural Products Preparation, via a Tandem [4+3]-Cycloaddition/Ozonolysis Process. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600590] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ángel M. Montaña
- Industrial and Applied Organic Chemistry Research Unity; Department of Organic Chemistry; University of Barcelona; Martí Franquès 1-11 08028 Barcelona Spain
| | - Albert Corominas
- Industrial and Applied Organic Chemistry Research Unity; Department of Organic Chemistry; University of Barcelona; Martí Franquès 1-11 08028 Barcelona Spain
| | - Juan F. Chesa
- Industrial and Applied Organic Chemistry Research Unity; Department of Organic Chemistry; University of Barcelona; Martí Franquès 1-11 08028 Barcelona Spain
| | - Francisca García
- Industrial and Applied Organic Chemistry Research Unity; Department of Organic Chemistry; University of Barcelona; Martí Franquès 1-11 08028 Barcelona Spain
| | - Mercè Font-Bardia
- X-ray Diffraction Unit. Scientific and Technologic Centers of the University of Barcelona (CCiTUB); University of Barcelona; Solé i Sabarís 1-3 08028 Barcelona Spain
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Testero SA, Mangione MI, Suárez AG, Spanevello RA. End-Group-Differentiating Ozonolysis of Norbornene Systems To Afford Highly Substituted Cyclopentane Rings. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300384] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Cain NM, Tiekink ERT, Taylor DK. Ozonolysis of Bicyclic 1,2-Dioxines: Initial Scope and Mechanistic Insights. J Org Chem 2012; 77:3808-19. [DOI: 10.1021/jo3001518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicole M Cain
- School of Agriculture, Food and Wine, The University of Adelaide, South Australia 5005, Australia
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Valiullina ZR, Akhmetdinova NP, Ivanova NA, Fatykhov AA, Vostrikov NS, Miftakhov MS. Reaction of (±)-7,7-dichloro-4-(1-methylethylidene)-bicyclo[3.2.0]hept-2-en-6-one with ozone. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2010. [DOI: 10.1134/s1070428010070092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mehta G, Ramesh SS. A New Glucose: Towards Conformationally Locked Hexoses through Annulation. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kawamura SI, Yamakoshi H, Abe M, Masuyama A, Nojima M. Ozonolyses of 1-alkyl-substituted 1-tert-butylethylenes and highly methylated methylenecycloalkanes. The influence of the substituent steric bulk on the direction of cleavage of the primary ozonides. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(01)01183-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Taber DF, Nakajima K. Unsymmetrical ozonolysis of a Diels-Alder adduct: practical preparation of a key intermediate for heme total synthesis. J Org Chem 2001; 66:2515-7. [PMID: 11281801 DOI: 10.1021/jo001732c] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D F Taber
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA.
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Fenske JD, Kuwata KT, Houk KN, Paulson SE. OH Radical Yields from the Ozone Reaction with Cycloalkenes. J Phys Chem A 2000. [DOI: 10.1021/jp993611q] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jill D. Fenske
- Department of Chemical Engineering, Department of Chemistry and Biochemistry, and Department of Atmospheric Sciences, University of California at Los Angeles, Los Angeles, California 90095-1565
| | - Keith T. Kuwata
- Department of Chemical Engineering, Department of Chemistry and Biochemistry, and Department of Atmospheric Sciences, University of California at Los Angeles, Los Angeles, California 90095-1565
| | - K. N. Houk
- Department of Chemical Engineering, Department of Chemistry and Biochemistry, and Department of Atmospheric Sciences, University of California at Los Angeles, Los Angeles, California 90095-1565
| | - Suzanne E. Paulson
- Department of Chemical Engineering, Department of Chemistry and Biochemistry, and Department of Atmospheric Sciences, University of California at Los Angeles, Los Angeles, California 90095-1565
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Ushigoe Y, Torao Y, Masuyama A, Nojima M. Synthesis of Hydroxy(or Hydroperoxy)-Substituted 1,2,4-Trioxacycloalkanes by the Ozonolysis of Unsaturated Hydroperoxy Acetals. J Org Chem 1997. [DOI: 10.1021/jo970555l] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihiro Ushigoe
- Department of Materials Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan
| | - Yuko Torao
- Department of Materials Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan
| | - Araki Masuyama
- Department of Materials Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan
| | - Masatomo Nojima
- Department of Materials Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan
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