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Churchman LR, Giang PD, Buczynski JB, Stok JE, Bell SG, De Voss JJ. Synthesis of substituted norcaranes for use as probes of enzyme mechanisms. Org Biomol Chem 2023; 21:9647-9658. [PMID: 38037692 DOI: 10.1039/d3ob01571h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Norcarane is a mechanistic probe of monooxygenase enzymes that is able to detect the presence of cationic or radical intermediates. The addition of substituents around the bicycloheptane ring of the norcarane scaffold can assist in improving enzyme binding affinity and thus improve the regioselectivity of oxidation. Here we prepare in three-step, diastereoselective syntheses, ten norcaranes monosubstituted α to the cyclopropane as advanced probes. Four of these compounds were examined in enzyme binding experiments to evaluate their potential as probe substrates. Additionally, 19 potential products of enzymatic oxidation were generated via two additional synthetic steps for use as product standards in future studies.
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Affiliation(s)
- Luke R Churchman
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia.
| | - Peter D Giang
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia.
| | - Julia B Buczynski
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia.
| | - Jeanette E Stok
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia.
| | - Stephen G Bell
- Department of Chemistry, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - James J De Voss
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia.
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2
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Thanvi R, Jayasinghe TD, Kapil S, Obadawo BS, Ronning DR, Sucheck SJ. Synthesis of C7/C8-cyclitols and C7N-aminocyclitols from maltose and X-ray crystal structure of Streptomyces coelicolor GlgEI V279S in a complex with an amylostatin GXG–like derivative. Front Chem 2022; 10:950433. [PMID: 36157042 PMCID: PMC9501709 DOI: 10.3389/fchem.2022.950433] [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: 05/22/2022] [Accepted: 07/26/2022] [Indexed: 11/30/2022] Open
Abstract
C7/C8-cyclitols and C7N-aminocyclitols find applications in the pharmaceutical sector as α-glucosidase inhibitors and in the agricultural sector as fungicides and insecticides. In this study, we identified C7/C8-cyclitols and C7N-aminocyclitols as potential inhibitors of Streptomyces coelicolor (Sco) GlgEI-V279S based on the docking scores. The protein and the ligand (targets 11, 12, and 13) were prepared, the states were generated at pH 7.0 ± 2.0, and the ligands were docked into the active sites of the receptor via Glide™. The synthetic route to these targets was similar to our previously reported route used to obtain 4-⍺-glucoside of valienamine (AGV), except the protecting group for target 12 was a p-bromobenzyl (PBB) ether to preserve the alkene upon deprotection. While compounds 11–13 did not inhibit Sco GlgEI-V279S at the concentrations evaluated, an X-ray crystal structure of the Sco GlgE1-V279S/13 complex was solved to a resolution of 2.73 Å. This structure allowed assessment differences and commonality with our previously reported inhibitors and was useful for identifying enzyme–compound interactions that may be important for future inhibitor development. The Asp 394 nucleophile formed a bidentate hydrogen bond interaction with the exocyclic oxygen atoms (C(3)-OH and C(7)-OH) similar to the observed interactions with the Sco GlgEI-V279S in a complex with AGV (PDB:7MGY). In addition, the data suggest replacing the cyclohexyl group with more isosteric and hydrogen bond–donating groups to increase binding interactions in the + 1 binding site.
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Affiliation(s)
- Radhika Thanvi
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH, United States
| | - Thilina D. Jayasinghe
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Sunayana Kapil
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH, United States
| | | | - Donald R. Ronning
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, United States
- *Correspondence: Donald R. Ronning, ; Steven J. Sucheck,
| | - Steven J. Sucheck
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, OH, United States
- *Correspondence: Donald R. Ronning, ; Steven J. Sucheck,
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3
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Nájera C, Foubelo F, Sansano JM, Yus M. Stereodivergent routes in organic synthesis: marine natural products, lactones, other natural products, heterocycles and unnatural compounds. Org Biomol Chem 2020; 18:1279-1336. [PMID: 32025682 DOI: 10.1039/c9ob02597a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantio- and diastereodivergent routes to marine-origin natural products with different sizes of cyclic ethers and lactones have been used in order to assign stereochemical features. Kainoid amino acids such as isodomoic acids have been synthesized using diastereodivergent routes. The bis(indole) alkaloid dragmacidin F has been prepared by enantiodivergent strategies as well as furanoterpenes and the tetracyclic agelastatin A. Natural products containing five-membered lactones like quercus lactones, muricatacins, goniofufuranones, methylenolactocins and frenolicin B have been synthesized using stereodivergent routes. Macrolides are very abundant lactones and have been mainly prepared from the corresponding seco-acids by lactonization, such as lasiodiplodin, zaeralanes, macrosphelides and haloprins, or by ring-closing metathesis, such as aspercyclides, microcarpalides, macrolides FD-891 and 892, and tetradic-5-en-9-olides. Other natural products including cyclic ethers (such as sesamin, asarinin, acetogenins, centrolobines and nabilones), alcohols (such as sulcatol), esters (such as methyl jasmonates), polycyclic precursors of fredericamycin, amino alcohols (such as ambroxol and sphingosines), isoprostanes, isofurans, polyketide precursors of anachelins, brevicomins, gummiferol, shikimic acid and the related compounds, and the pheromone disparlure have been synthesized stereodivergently. Heterocyclic systems such as epoxides, theobroxides and bromoxones, oxetan-3-ones, 5- to 8-membered cyclic ethers, azetidones, γ-lactams, oxazolidinones, bis(oxazolines), dihydropyridoisoindolines and octahydroisoquinolines have been prepared following stereodivergent routes. Stereodivergent routes to unnatural compounds such as alkenes, dienes, allenes, cyclopropanes, alcohols, aldols, amines, amino alcohols, β-amino acids, carboxylic acids, lactones, nitriles and α-amino nitriles have been considered as well.
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Affiliation(s)
- Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
| | - Francisco Foubelo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain. and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - José M Sansano
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain. and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, E-03080 Alicante, Spain.
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4
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Su L, Yang D, Zhang Y, Wang B, Qu J. Methylene insertion into an Fe 2S 2 cluster: formation of a thiolate-bridged diiron complex containing an Fe-CH 2-S moiety. Chem Commun (Camb) 2018; 54:13119-13122. [PMID: 30398494 DOI: 10.1039/c8cc07418f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Reduction of a thiolate-bridged FeIIFeIII complex leads to the cleavage of an Fe-S bond by the insertion of the methylene unit from CH2Cl2 to give a neutral FeIIFeIII complex with a novel Fe-CH2-S fragment. The structural and electrochemical differences of the alkylated and the non-alkylated Fe2S2 complexes are also examined.
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Affiliation(s)
- Linan Su
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China.
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5
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Eugui M, Parpal F, López Radcenco A, Moyna G. Synthetic Methods for the Preparation of Norcarane Scaffolds. A Review. ORG PREP PROCED INT 2018. [DOI: 10.1080/00304948.2018.1462048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Macarena Eugui
- Departamento de Química del Litoral, CENUR Litoral Norte, Universidad de la República, Ruta 3 Km 363, Paysandú 60000, Uruguay
| | - Florencia Parpal
- Departamento de Química del Litoral, CENUR Litoral Norte, Universidad de la República, Ruta 3 Km 363, Paysandú 60000, Uruguay
| | - Andrés López Radcenco
- Departamento de Química del Litoral, CENUR Litoral Norte, Universidad de la República, Ruta 3 Km 363, Paysandú 60000, Uruguay
| | - Guillermo Moyna
- Departamento de Química del Litoral, CENUR Litoral Norte, Universidad de la República, Ruta 3 Km 363, Paysandú 60000, Uruguay
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6
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Tomilov YV, Menchikov LG, Novikov RA, Ivanova OA, Trushkov IV. Methods for the synthesis of donor-acceptor cyclopropanes. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4787] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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7
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Diastereoselective Synthesis of Spirocyclopropanes under Mild Conditions via Formal [2 + 1] Cycloadditions Using 2,3-Dioxo-4-benzylidene-pyrrolidines. Molecules 2017; 22:molecules22020328. [PMID: 28241452 PMCID: PMC6155796 DOI: 10.3390/molecules22020328] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 02/14/2017] [Accepted: 02/16/2017] [Indexed: 12/28/2022] Open
Abstract
A highly diastereoselective cyclopropanation of cyclic enones with sulfur ylides was developed under catalyst-free conditions, producing multifunctional spirocyclopropanes in generally excellent yields (up to 99% yield and >99:1 d.r.). The asymmetric version of this method was realized by using an easily available chiral sulfur ylide, affording products with moderate to good stereoselectivity.
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8
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Cyclopropanation of [2,2’]biadamantylidene with Me3Al–CH2I2 reagent. MENDELEEV COMMUNICATIONS 2016. [DOI: 10.1016/j.mencom.2016.09.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Ramazanov IR, Yaroslavova AV, Dzhemilev UM. CH 2 I 2 –Et 3 Al reagent in the cyclopropanation of 2-alkenyl amines. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Davies SG, Fletcher AM, Thomson JE. Hydrogen bond directed epoxidation: diastereoselective olefinic oxidation of allylic alcohols and amines. Org Biomol Chem 2015; 12:4544-9. [PMID: 24854106 DOI: 10.1039/c4ob00616j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article compares the diastereoselective epoxidation of acyclic and cyclic allylic alcohols, with the chemo- and diastereoselective olefinic oxidation of a range of acyclic and cyclic allylic amines. The diastereoselectivity in these systems is compared and a discussion about the origin of this high diastereocontrol is also presented. The ammonium directed epoxidation methodology has been extended to more complex substrates and representative applications of this protocol in natural product synthesis are also summarised.
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Affiliation(s)
- Stephen G Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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11
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Chakladar S, Wang Y, Clark T, Cheng L, Ko S, Vocadlo DJ, Bennet AJ. A mechanism-based inactivator of glycoside hydrolases involving formation of a transient non-classical carbocation. Nat Commun 2014; 5:5590. [DOI: 10.1038/ncomms6590] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 10/16/2014] [Indexed: 12/21/2022] Open
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12
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Ghisolfi A, Condello F, Fliedel C, Rosa V, Braunstein P. Facile and Room-Temperature Activation of Csp3–Cl Bonds by Cheap and Air-Stable Nickel(II) Complexes of (N-Thioether) DPPA-Type Ligands. Organometallics 2014. [DOI: 10.1021/om501004d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Alessio Ghisolfi
- Laboratoire de Chimie de
Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, 67081 Strasbourg Cedex, France
| | - Francesca Condello
- Laboratoire de Chimie de
Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, 67081 Strasbourg Cedex, France
| | - Christophe Fliedel
- Laboratoire de Chimie de
Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, 67081 Strasbourg Cedex, France
| | - Vitor Rosa
- Laboratoire de Chimie de
Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, 67081 Strasbourg Cedex, France
| | - Pierre Braunstein
- Laboratoire de Chimie de
Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, 67081 Strasbourg Cedex, France
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13
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Ramirez A, Truc VC, Lawler M, Ye YK, Wang J, Wang C, Chen S, Laporte T, Liu N, Kolotuchin S, Jones S, Bordawekar S, Tummala S, Waltermire RE, Kronenthal D. The Effect of Additives on the Zinc Carbenoid-Mediated Cyclopropanation of a Dihydropyrrole. J Org Chem 2014; 79:6233-43. [DOI: 10.1021/jo500966m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Antonio Ramirez
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Vu Chi Truc
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Michael Lawler
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Yun K. Ye
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Jianji Wang
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Chenchi Wang
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Steven Chen
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Thomas Laporte
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Nian Liu
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Sergei Kolotuchin
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Scott Jones
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Shailendra Bordawekar
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Srinivas Tummala
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - Robert E. Waltermire
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
| | - David Kronenthal
- Chemical Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 0890, United States
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14
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Brennan MB, Claridge TDW, Compton RG, Davies SG, Fletcher AM, Henstridge MC, Hewings DS, Kurosawa W, Lee JA, Roberts PM, Schoonen AK, Thomson JE. Ammonium-directed olefinic epoxidation: kinetic and mechanistic insights. J Org Chem 2012; 77:7241-61. [PMID: 22827448 DOI: 10.1021/jo3010556] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ammonium-directed olefinic epoxidations of a range of differentially N-substituted cyclic allylic and homoallylic amines (derived from cyclopentene, cyclohexene, and cycloheptene) have been investigated, and the reaction kinetics have been analyzed. The results of these studies suggest that both the ring size and the identity of the substituents on nitrogen are important in determining both the overall rate and the stereochemical outcome of the epoxidation reaction. In general, secondary amines or tertiary amines with nonsterically demanding substituents on nitrogen are superior to tertiary amines with sterically demanding substituents on nitrogen in their ability to promote the oxidation reaction. Furthermore, in all cases examined, the ability of the (in situ formed) ammonium substituent to direct the stereochemical course of the epoxidation reaction is either comparable or superior to that of the analogous hydroxyl substituent. Much slower rates of ring-opening of the intermediate epoxides are observed in cyclopentene-derived and cycloheptene-derived allylic amines as compared with their cyclohexene-derived allylic and homoallylic amine counterparts, allowing for isolation of these intermediates in both of the former cases.
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Affiliation(s)
- Méabh B Brennan
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
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15
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Cornwall RG, Wong OA, Du H, Ramirez TA, Shi Y. A novel class of tunable cyclopropanation reagents (RXZnCH2Y) and their synthetic applications. Org Biomol Chem 2012; 10:5498-513. [PMID: 22688971 DOI: 10.1039/c2ob25481f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Simmons-Smith cyclopropanation is a widely used method to synthesize cyclopropanes from alkenes using methylene iodide and a zinc reagent. A novel class of organozinc species, RXZnCH(2)Y, has been found to efficiently cyclopropanate alkenes, including traditionally unreactive unfunctionalized alkenes. The reactivity and selectivity of this class of organozinc reagents can be regulated by tuning the electronic and/or steric nature of the RX group attached to Zn. During recent years, this class of organozinc reagent has been widely used in organic synthesis as a reagent for cyclopropanation and other useful synthetic transformations. Catalytic, asymmetric versions of this reaction have been developed providing high enantiomeric excess for unfunctionalized olefins.
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Affiliation(s)
- Richard G Cornwall
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
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16
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Cacchi S, Fabrizi G, Goggiamani A, Sferrazza A. Heck reaction of arenediazonium salts with N,N-diprotected allylamines. Synthesis of cinnamylamines and indoles. Org Biomol Chem 2011; 9:1727-30. [DOI: 10.1039/c0ob01052a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Davies SG, Fletcher AM, Kurosawa W, Lee JA, Poce G, Roberts PM, Thomson JE, Williamson DM. One-Pot Conversions of Olefins to Cyclic Carbonates and Secondary Allylic and Homoallylic Amines to Cyclic Carbamates. J Org Chem 2010; 75:7745-56. [DOI: 10.1021/jo101614f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephen G. Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Ai M. Fletcher
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Wataru Kurosawa
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - James A. Lee
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Giovanna Poce
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Paul M. Roberts
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - James E. Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - David M. Williamson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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18
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Csatayová K, Davies SG, Lee JA, Ling KB, Roberts PM, Russell AJ, Thomson JE. Chemo- and diastereoselective cyclopropanation of allylic amines and carbamates. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.08.055] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Davies SG, Ling KB, Roberts PM, Russell AJ, Thomson JE, Woods PA. The stereodivergent aziridination of allylic carbamates, amides and sulfonamides. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.06.059] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Csatayová K, Davies SG, Lee JA, Ling KB, Roberts PM, Russell AJ, Thomson JE. Syntheses of trans-SCH-A and cis-SCH-A via a Stereodivergent Cyclopropanation Protocol. Org Lett 2010; 12:3152-5. [DOI: 10.1021/ol101295t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kristína Csatayová
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Stephen G. Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - James A. Lee
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Kenneth B. Ling
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Paul M. Roberts
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Angela J. Russell
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - James E. Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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Companyó X, Alba AN, Cárdenas F, Moyano A, Rios R. Asymmetric Organocatalytic Cyclopropanation - Highly Stereocontrolled Synthesis of Chiral Cyclopropanes with Quaternary Stereocenters. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900209] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Pattacini R, Jie S, Braunstein P. Facile dichloromethane activation and phosphine methylation. Isolation of unprecedented zwitterionic organozinc and organocobalt intermediates. Chem Commun (Camb) 2009:890-2. [DOI: 10.1039/b817728g] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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