1
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Jiang Q, Dong J, Zhou X, Liao H, Zhou J, Xue D. Lewis-Acid-Catalyzed Dearomative [4π + 2σ] Cycloaddition of Bicyclobutanes with Isoquinolinium Methylides for the Synthesis of Ring-Fused Azabicyclo[3.1.1]heptanes. Org Lett 2024. [PMID: 39419592 DOI: 10.1021/acs.orglett.4c03489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2024]
Abstract
Dearomative cycloadditions are valuable for efficiently generating three-dimensional molecular complexity. However, despite recent reports of cycloadditions of bicyclobutanes (BCBs) for the synthesis of aza-bicyclo[3.1.1]heptanes (aza-BCHeps), which are bioisosteres of meta-substituted aza-arenes, dearomative cycloaddition of BCBs with N-heteroarenes for the synthesis of ring-fused aza-BCHeps has yet to be achieved. Herein, we disclose a method for Lewis acid-catalyzed [4π + 2σ] cycloaddition of isoquinolinium methylides with BCBs, which furnished a diverse array of previously inaccessible ring-fused 3-aza-BCHeps. We demonstrated the synthetic utility of the method by carrying out scaled-up reactions and transforming the products.
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Affiliation(s)
- Qin Jiang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Jianyang Dong
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Xuechen Zhou
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Huijuan Liao
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Juan Zhou
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Dong Xue
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
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2
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Bonjoch J, Diaba F. Radical Reactions in Alkaloid Synthesis: A Perspective from Carbon Radical Precursors. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000391] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Josep Bonjoch
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
| | - Faiza Diaba
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
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3
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Lan P, Banwell MG, Willis AC. Application of Electrocyclic Ring-Opening and Desymmetrizing Nucleophilic Trappings of meso-6,6-Dibromobicyclo[3.1.0]hexanes to Total Syntheses of Crinine and Haemanthamine Alkaloids. J Org Chem 2019; 84:3431-3466. [PMID: 30726669 DOI: 10.1021/acs.joc.9b00018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The thermally induced electrocyclic ring-opening of C2-symmetric ( meso) 6,6-dibromobicyclo[3.1.0]hexanes such as 10 in the presence of the chiral, nonracemic 1°-amine 28 afforded a ca. 1:1 mixture of the diastereoisomeric and chromatographically separable 1-amino-2-bromo-2-cyclohexenes 37 (42%) and 38 (45%). Each of these was elaborated over 13 steps, including Suzuki-Miyaura cross-coupling, radical cyclization, and Pictet-Spengler reactions, into (-)- or (+)-crinane (1 or ent-1, respectively). Variations on these protocols were applied to the total syntheses of (+)- and (-)-11-hydroxyvattitine [(+)- and (-)-3], (+)- and (-)-bulbispermine [(+)- and (-)-4], (+)- and (-)-haemanthamine [(+)- and (-)-5], (+)- and (-)-pretazettine [(+)- and (-)-6], and (+)- and (-)-tazettine [(+)- and (-)-7] as well as (±)-hamayne [(±)-8] and (±)-apohaemanthamine [(±)-9]. A number of these alkaloids were synthesized for the first time.
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Affiliation(s)
- Ping Lan
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Zhuhai 519070 , China.,Department of Food Science and Engineering , Jinan University , Guangzhou 510632 , China
| | - Martin G Banwell
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Zhuhai 519070 , China.,Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Anthony C Willis
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
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4
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5
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Somarathne KK, McCone JAJ, Brackovic A, Rivera JLP, Fulton JR, Russell E, Field JJ, Orme CL, Stirrat HL, Riesterer J, Teesdale‐Spittle PH, Miller JH, Harvey JE. Synthesis of Bioactive Side‐Chain Analogues of TAN‐2483B. Chem Asian J 2019; 14:1230-1237. [DOI: 10.1002/asia.201801767] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/27/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Kalpani K. Somarathne
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Jordan A. J. McCone
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery Auckland New Zealand
| | - Amira Brackovic
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - José Luis Pinedo Rivera
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - J. Robin Fulton
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Euan Russell
- School of Biological Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Jessica J. Field
- School of Biological Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Christopher L. Orme
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Hedley L. Stirrat
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Jasmin Riesterer
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Paul H. Teesdale‐Spittle
- Maurice Wilkins Centre for Molecular Biodiscovery Auckland New Zealand
- School of Biological Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - John H. Miller
- School of Biological Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
| | - Joanne E. Harvey
- School of Chemical and Physical Sciences, Centre for BiodiscoveryVictoria University of Wellington Wellington New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery Auckland New Zealand
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6
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Sharp PP, Mikusek J, Ho J, Krenske EH, Banwell MG, Coote ML, Ward JS, Willis AC. Mechanistic Studies on the Base-Promoted Conversion of Alkoxy-Substituted, Ring-Fused gem-Dihalocyclopropanes into Furans: Evidence for a Process Involving Electrocyclic Ring Closure of a Carbonyl Ylide Intermediate. J Org Chem 2018; 83:13678-13690. [PMID: 30281974 DOI: 10.1021/acs.joc.8b01766] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The mechanism associated with the base-promoted conversion of alkoxy-substituted and ring-fused gem-dihalocyclopropanes such as 40 into annulated furans has been explored. Treatment of compound 40 with potassium tert-butoxide affords a mixture of furans 23/27 and 41, an outcome that suggests the intermediacy of the slowly interconverting carbonyl ylides 42 and 43 that undergo rapid [1,5]-electrocyclizations and subsequent dehydrohalogenation to afford the observed products. This proposal is supported by ab initio MO and DFT calculations that also suggest a vinylcarbene insertion pathway is less likely to be operative.
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Affiliation(s)
- Phillip P Sharp
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Jiri Mikusek
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Junming Ho
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia.,School of Chemistry , The University of New South Wales , Sydney , NSW 2052 , Australia
| | - Elizabeth H Krenske
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Martin G Banwell
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Michelle L Coote
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia.,ARC Centre of Excellence for Electromaterials Science, Research School of Chemistry , The Australian National University , Canberra ACT 2601 , Australia
| | - Jas S Ward
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Anthony C Willis
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
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7
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Kim SJ, Lough AJ, Batey RA. An Approach to the 9-Oxo-10-oxabicyclo[5.3.0]dec-2-ene Core of the Guaianolide and Pseudoguaianolide Sesquiterpenes via a Domino Electrocyclic Ring-Opening/Carboxylic Acid Trapping of a gem-Dibromocyclopropane. J Org Chem 2018; 83:13799-13810. [PMID: 30303376 DOI: 10.1021/acs.joc.8b02081] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A domino silver(I)-promoted electrocyclic 2π-disrotatory electrocyclic ring-opening/intramolecular nucleophilic trapping of [ n.1.0]-dibromocyclopropanes by tethered carboxylic acids results in cyclization to butyrolactones fused to six- and seven-membered carbocycles. In the case of bicyclic [4.3.0] lactones the cis-fused stereoisomer was formed, whereas for the bicyclic [5.3.0] lactones the trans-fused stereoisomer was formed. Optimal conditions for the reaction used silver(I) trifluoroacetate (2.0 equiv) in trifluoroethanol or with added pyridine (2.0 equiv) and NaPF6 (5.0 equiv). The dibromocyclopropane precursors were made through cyclopropanation with in situ-generated dibromocarbene. The trans-fused lactones are potentially useful building blocks for pseudoguaianolide, guaianolide, and xanthanolide total synthesis. A computational study on the conformational preferences of these systems indicates that the trans-fused bicyclic [5.3.0] butyrolactones are lower in energy than the corresponding cis-fused lactones at the B3LYP/cc-pVTZ level of theory.
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Affiliation(s)
- Simon J Kim
- Davenport Research Laboratories, Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Alan J Lough
- Davenport Research Laboratories, Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Robert A Batey
- Davenport Research Laboratories, Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
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8
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Taher ES, Banwell MG, Buckler JN, Yan Q, Lan P. The Exploitation of Enzymatically-Derivedcis-1,2-Dihydrocatechols and Related Compounds in the Synthesis of Biologically Active Natural Products. CHEM REC 2017; 18:239-264. [DOI: 10.1002/tcr.201700064] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Ehab S. Taher
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Martin G. Banwell
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Joshua N. Buckler
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Qiao Yan
- Research School of Chemistry; Institute of Advanced Studies; The Australian National University; Canberra ACT 2601 Australia
| | - Ping Lan
- Department of Food Science and Engineering; College of Science and Engineering; Jinan University; Guangzhou 510632 People's Republic of China
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9
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Lee DS, Durán-Peña MJ, Burroughs L, Woodward S. Efficient Preparation of TMSCCl2 Br and Its Use in Dichlorocyclopropanation of Electron-Deficient Alkenes. Chemistry 2016; 22:7609-16. [PMID: 27112785 DOI: 10.1002/chem.201600607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Indexed: 11/10/2022]
Abstract
The reaction of excess TMSCl and LiCCl2 Br at low temperature is a technically simple high yield route to TMSCCl2 Br. The latter is a stable source of the dichlorobromomethide carbanion, which undergoes 1,4-addition with cyclic nitroalkenes and (E)-fumarates leading to dichlorocyclopropanes after bromide expulsion. For nitrostyrenes the reaction arrests at the 1,4-addition product. Low temperature NMR spectroscopy studies and DFT calculations suggest the formation of an "ate" species [(nitronate)SiFMe3 ](-) which, upon boil-off of TMSF at 10-20 °C, yields the cyclopropane. DFT calculations also support the experimental differences between fluoride and acetate as promotors.
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Affiliation(s)
- Darren S Lee
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
| | | | - Laurence Burroughs
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Simon Woodward
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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10
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Xu Y, Liao Y, Lin L, Zhou Y, Li J, Liu X, Feng X. Catalytic Asymmetric Inverse-Electron Demand 1,3-Dipolar Cycloaddition of Isoquinolinium Methylides with Enecarbamates by a Chiral N,N′-Dioxide/Ag(I) Complex. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02178] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yali Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
| | - Yuting Liao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
| | - Yuhang Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
| | - Jun Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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11
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Ren K, Zhao M, Hu B, Lu B, Xie X, Ratovelomanana-Vidal V, Zhang Z. An Enantioselective Approach to 4-O-Protected-2-cyclopentene-l,4-diol Derivatives via a Rhodium-Catalyzed Redox-Isomerization Reaction. J Org Chem 2015; 80:12572-9. [PMID: 26605977 DOI: 10.1021/acs.joc.5b02519] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Kinetic resolution of a series of cyclopentene-1,4-diol derivatives has been successfully achieved with enantiomeric excess up to 99.4% and a kf/ks ratio of 55 by a rhodium-catalyzed redox-isomerization reaction in a noncoordinating solvent.
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Affiliation(s)
- Kai Ren
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Mengmeng Zhao
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Bei Hu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Bin Lu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Xiaomin Xie
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | | | - Zhaoguo Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry , 345 Lingling Road, Shanghai 200032, P. R. China
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12
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Holec C, Sandkuhl D, Rother D, Kroutil W, Pietruszka J. Chemoenzymatic Synthesis towards the Active Agent Travoprost. ChemCatChem 2015. [DOI: 10.1002/cctc.201500587] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Claudia Holec
- Institute for Bioorganic Chemistry; Heinrich-Heine-University of Düsseldorf at the Forschungszentrum Jülich; Stetternicher Forst, Geb. 15.8 52426 Jülich Germany
| | - Diana Sandkuhl
- Institute for Bioorganic Chemistry; Heinrich-Heine-University of Düsseldorf at the Forschungszentrum Jülich; Stetternicher Forst, Geb. 15.8 52426 Jülich Germany
| | - Dörte Rother
- Institute of Bio- and Geosciences (IBG-1: Biotechnology); Forschungszentrum Jülich; 52426 Jülich Germany
| | - Wolfgang Kroutil
- Institute of Chemistry, Organic and Bioorganic Chemistry, University of Graz; Heinrichstrasse 28 8010 Graz Austria
| | - Jörg Pietruszka
- Institute for Bioorganic Chemistry; Heinrich-Heine-University of Düsseldorf at the Forschungszentrum Jülich; Stetternicher Forst, Geb. 15.8 52426 Jülich Germany
- Institute of Bio- and Geosciences (IBG-1: Biotechnology); Forschungszentrum Jülich; 52426 Jülich Germany
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13
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Mostowicz D, Dygas M, Kałuża Z. Heck Cyclization Strategy for Preparation of Erythrinan Alkaloids: Asymmetric Synthesis of Unnatural (−)-Erysotramidine from L-Tartaric Acid. J Org Chem 2015; 80:1957-63. [DOI: 10.1021/jo5026157] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Danuta Mostowicz
- Institute of Organic
Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Mirosław Dygas
- Institute of Organic
Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Zbigniew Kałuża
- Institute of Organic
Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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14
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Nishii Y. Highly Stereoselective Construction and Chiral Transfer Ring-expansion of Highly Substituted Cyclopropanes. J SYN ORG CHEM JPN 2015. [DOI: 10.5059/yukigoseikyokaishi.73.701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Moore PW, Schuster JK, Hewitt RJ, Stone MRL, Teesdale-Spittle PH, Harvey JE. Divergent synthesis of 2-C-branched pyranosides and oxepines from 1,2-gem-dibromocyclopropyl carbohydrates. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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L’Homme C, Ménard MA, Canesi S. Synthesis of the Erythrina Alkaloid Erysotramidine. J Org Chem 2014; 79:8481-5. [DOI: 10.1021/jo501583c] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chloé L’Homme
- Laboratoire
de Méthodologie
et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8 Québec, Canada
| | - Marc-André Ménard
- Laboratoire
de Méthodologie
et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8 Québec, Canada
| | - Sylvain Canesi
- Laboratoire
de Méthodologie
et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8 Québec, Canada
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17
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Singh G, Meyer A, Aubé J. Stereodivergent synthesis of enantioenriched 4-hydroxy-2-cyclopentenones. J Org Chem 2013; 79:452-8. [PMID: 24325280 DOI: 10.1021/jo402539p] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Protected 4-hydroxycyclopentenones (4-HCPs) constitute an important class of intermediates in chemical synthesis. A route to this class of compound has been developed. Key steps include Noyori reduction (which establishes the stereochemistry of the product), ring-closing metathesis, and simple functional group conversions to provide a set of substituted 4-HCPs in either enantiomeric form.
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Affiliation(s)
- Gurpreet Singh
- Department of Medicinal Chemistry, University of Kansas , Delbert M. Shankel Structural Biology Center, 2034 Becker Drive, Lawrence, Kansas 66047-3761, United States
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18
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Synthesis of 2-bromo-1-aryl-1H-indenes via a Ag(I) promoted domino 2π-electrocyclic ring-opening/4π-electrocyclization reaction of 1,2-diaryl substituted gem-dibromocyclopropanes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.07.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Kalaitzakis D, Montagnon T, Antonatou E, Vassilikogiannakis G. One-pot Synthesis of the Tetracyclic Framework of the Aromatic Erythrina Alkaloids from Simple Furans. Org Lett 2013; 15:3714-7. [DOI: 10.1021/ol401582e] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dimitris Kalaitzakis
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Tamsyn Montagnon
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
| | - Eirini Antonatou
- Department of Chemistry, University of Crete, Vasilika Vouton, 71003 Iraklion, Crete, Greece
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20
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Nishimura T, Unni AK, Yokoshima S, Fukuyama T. Total syntheses of lyconadins A-C. J Am Chem Soc 2013; 135:3243-7. [PMID: 23330605 DOI: 10.1021/ja312065m] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The total synthesis of the Lycopodium alkaloid lyconadin A was accomplished and it was applied to the total syntheses of the related congeners, lyconadins B and C. Lyconadin A has attracted attention as a challenging target for total synthesis due to the unprecedented pentacyclic skeleton. Our synthesis of lyconadin A features a facile construction of the highly fused tetracyclic skeleton through a combination of an aza-Prins reaction and an electrocyclic ring opening, followed by formation of a C-N bond. Transformation of the bromoalkene moiety of the tetracycle to a key enone intermediate was extensively investigated, and three methods via sulfide, oxime, or azide intermediates were established. A pyridone ring was constructed from the key enone intermediate to complete the synthesis of lyconadin A. A dihydropyridone ring could also be formed from the same enone intermediate, leading to a synthesis of lyconadin B. Establishment of the conditions for an electrocyclic ring opening without formation of the C-N bond resulted in completion of the total synthesis of lyconadin C.
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Affiliation(s)
- Takuya Nishimura
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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21
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Gopi E, Namboothiri INN. Synthesis of Fused Bromofurans via Mg-Mediated Dibromocyclopropanation of Cycloalkanone-Derived Chalcones and Cloke–Wilson Rearrangement. J Org Chem 2013; 78:910-9. [DOI: 10.1021/jo3022988] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elumalai Gopi
- Department of Chemistry, Indian Institute of Technology, Bombay, Mumbai 400 076, India
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22
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Lin ST, Lee CC, Ding MF, Liang DW, Jeng AT. Some Reactions of gem-Dibromocyclopropanes and Metal Carbonyls. J CHIN CHEM SOC-TAIP 2012. [DOI: 10.1002/jccs.201100375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Shirakawa S, Liu K, Ito H, Le TN, Maruoka K. Phase-Transfer-Catalyzed Asymmetric Synthesis of 1,1-Disubstituted Tetrahydroisoquinolines. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100269] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Synthetic Studies on Amaryllidaceae and Other Terrestrially Derived Alkaloids. Top Curr Chem (Cham) 2011; 309:163-202. [DOI: 10.1007/128_2011_217] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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25
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Hewitt RJ, Harvey JE. Synthesis of Oxepines and 2-Branched Pyranosides from a d-Glucal-Derived gem-Dibromo-1,2-cyclopropanated Sugar. J Org Chem 2010; 75:955-8. [DOI: 10.1021/jo902306a] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Russell J. Hewitt
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
| | - Joanne E. Harvey
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
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26
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Bissember AC, Banwell MG. Preparation of some angularly substituted and highly functionalized quinolizidines as building blocks for the synthesis of various alkaloids and related scaffolds of medicinal interest. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Matveenko M, Banwell MG, Willis AC. A chemoenzymatic total synthesis of the structure assigned to the alkaloid (+)-montabuphine. Org Lett 2008; 10:4693-6. [PMID: 18816123 DOI: 10.1021/ol801815k] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An enantioselective synthesis of the structure, 3, assigned to the alkaloid (+)-montabuphine has been achieved using the readily available metabolite 4 as starting material. A comparison of the physical and spectral data recorded on compound 3 with those reported for (+)-montabuphine suggests that they are different compounds.
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Affiliation(s)
- Maria Matveenko
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 0200, Australia
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28
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Kokas OJ, Banwell MG, Willis AC. Chemoenzymatic approaches to the montanine alkaloids: a total synthesis of (+)-nangustine. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.070] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Abstract
This article describes the utility of certain readily accessible, ring-fusedgem-dihalogenocyclopropanes as building blocks for the synthesis of heterocyclic and biologically active compounds.
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Affiliation(s)
- Martin G. Banwell
- 1Research School of Chemistry, Institute of Advanced Studies,The Australian National University, Canberra, ACT 0200, Australia
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