1
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Zheng Y, Chen Y, He Y, Rizzo A, Zhou Y, Low KH, Krenske EH, Chiu P. Dearomative Intramolecular (4+3) Cycloadditions of Thiophenes. Angew Chem Int Ed Engl 2024; 63:e202407059. [PMID: 38758985 DOI: 10.1002/anie.202407059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/19/2024]
Abstract
Unexpectedly facile dearomative intramolecular (4+3) cycloadditions of thiophenes with epoxy enolsilanes, providing sulfur-bridged cycloadducts, are reported. A total of fifteen thiophene substrates have been found to undergo (4+3) cycloaddition smoothly to produce endo and exo (4+3) adducts in yields of up to 83 % with moderate to good diastereoselectivity. Complete conservation of enantiomeric purity was observed when the optically enriched epoxide was used. The desulfurizing transformations of the sulfur-bridged skeleton of the cycloadducts provide functionalized 6,7-fused bicyclic frameworks consisting of 1,3-cycloheptadiene subunits. Density functional theory calculations reveal the origins of the facile dearomatization of thiophenes in these (4+3) cycloadditions.
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Affiliation(s)
- Yufen Zheng
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Yueyao Chen
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, Science Park, Shatin, Hong Kong
| | - Yuxuan He
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Antonio Rizzo
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Yuchen Zhou
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Kam-Hung Low
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
| | - Elizabeth H Krenske
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Pauline Chiu
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
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2
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Zhou JL, Xiao Y, He L, Gao XY, Yang XC, Wu WB, Wang G, Zhang J, Feng JJ. Palladium-Catalyzed Ligand-Controlled Switchable Hetero-(5 + 3)/Enantioselective [2σ+2σ] Cycloadditions of Bicyclobutanes with Vinyl Oxiranes. J Am Chem Soc 2024; 146:19621-19628. [PMID: 38739092 DOI: 10.1021/jacs.4c01851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
For nearly 60 years, significant research efforts have been focused on developing strategies for the cycloaddition of bicyclobutanes (BCBs). However, higher-order cycloaddition and catalytic asymmetric cycloaddition of BCBs have been long-standing formidable challenges. Here, we report Pd-catalyzed ligand-controlled, tunable cycloadditions for the divergent synthesis of bridged bicyclic frameworks. The dppb ligand facilitates the formal (5+3) cycloaddition of BCBs and vinyl oxiranes, yielding valuable eight-membered ethers with bridged bicyclic scaffolds in 100% regioselectivity. The Cy-DPEphos ligand promotes selective hetero-[2σ+2σ] cycloadditions to access pharmacologically important 2-oxabicyclo[3.1.1]heptane (O-BCHeps). Furthermore, the corresponding catalytic asymmetric synthesis of O-BCHeps with 94-99% ee has been achieved using chiral (S)-DTBM-Segphos, representing the first catalytic asymmetric cross-dimerization of two strained rings. The obtained O-BCHeps are promising bioisosteres for ortho-substituted benzenes.
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Affiliation(s)
- Jin-Lan Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Yuanjiu Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Linke He
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Xin-Yu Gao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Xue-Chun Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Wen-Biao Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
| | - Guoqiang Wang
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, Shanghai 200438, P.R. China
| | - Jian-Jun Feng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China
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3
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Chen Y, Ling J, Keto AB, He Y, Low K, Krenske EH, Chiu P. Chemoselective and Diastereoselective Intramolecular (3+2) Cycloadditions of Epoxy and Aziridinyl Enolsilanes. Angew Chem Int Ed Engl 2022; 61:e202116099. [DOI: 10.1002/anie.202116099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Yueyao Chen
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Jesse Ling
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Angus B. Keto
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane QLD 4072 Australia
| | - Yun He
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Kam‐Hung Low
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane QLD 4072 Australia
| | - Pauline Chiu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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4
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Xing S, Wang Y, Jin C, Shi S, Zhang Y, Liao Z, Wang K, Zhu B. Construction of Bridged Aza- and Oxa-[ n.2.1] Skeletons via an Intramolecular Formal [3+2] Cycloaddition of Aziridines and Epoxides with Electron-Deficient Alkenes. J Org Chem 2022; 87:6426-6431. [PMID: 35439001 DOI: 10.1021/acs.joc.2c00287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An intramolecular formal [3+2] cycloaddition of activated aziridines and epoxides with electron-deficient alkene has been developed for the general and efficient construction of bridged aza- and oxa-[n.2.1] (n = 3 or 4) skeletons. This strategy can be efficiently promoted by lithium iodide. To demonstrate its potential, the intramolecular formal [3+2] cycloaddition was used to access the important intermediate of homoepiboxidine.
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Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Yuhan Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Changkun Jin
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Shaochen Shi
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Yihui Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Ziya Liao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
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5
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Shaw P, Hassell-Hart SJ, Douglas GE, Malcolm AG, Kennedy AR, White GV, Paterson LC, Kerr WJ. Oxygenated Cyclopentenones via the Pauson-Khand Reaction of Silyl Enol Ether Substrates. Org Lett 2022; 24:2750-2755. [PMID: 35377671 PMCID: PMC9016766 DOI: 10.1021/acs.orglett.2c00856] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
![]()
We report here the
application of silyl enol ether moieties as
efficient alkene coupling partners within cobalt-mediated intramolecular
Pauson–Khand reactions. This cyclization strategy delivers
synthetically valuable oxygenated cyclopentenone products in yields
of ≤93% from both ketone- and aldehyde-derived silyl enol ethers,
incorporates both terminal and internal alkyne partners, and delivers
a variety of decorated systems, including more complex tricyclic structures.
Facile removal of the silyl protecting group reveals oxygenated sites
for potential further elaboration.
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Affiliation(s)
- Paul Shaw
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
| | - Storm J Hassell-Hart
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K.,Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, England, U.K
| | - Gayle E Douglas
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
| | - Andrew G Malcolm
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
| | - Alan R Kennedy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
| | - Gemma V White
- Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, England, U.K
| | - Laura C Paterson
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
| | - William J Kerr
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland, U.K
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6
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Chen Y, Ling J, Keto AB, He Y, Low KH, Krenske EH, Chiu P. Chemoselective and Diastereoselective Intramolecular (3+2) Cycloadditions of Epoxy and Aziridinyl Enolsilanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yueyao Chen
- The University of Hong Kong Chemistry Pokfulam Road 999077 Hong Kong HONG KONG
| | - Jesse Ling
- The University of Hong Kong Chemistry HONG KONG
| | - Angus B. Keto
- The University of Queensland School of Chemistry and Molecular Biosciences AUSTRALIA
| | - Yun He
- The University of Hong Kong Chemistry HONG KONG
| | | | - Elizabeth H. Krenske
- The University of Queensland School of Chemistry and Molecular Biosciences AUSTRALIA
| | - Pauline Chiu
- The University of Hong Kong Department of Chemistry and State Key Laboratory of Synthetic Chemistry Pokfulam Road 00000 Hong Kong HONG KONG
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7
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Sarkar T, Talukdar K, Das BK, Shah TA, Debnath B, Punniyamurthy T. The transition-metal-catalyzed stereoselective ring-expansion of vinylaziridines and vinyloxiranes. Org Biomol Chem 2021; 19:3776-3790. [PMID: 33949586 DOI: 10.1039/d1ob00259g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The transition-metal-aided stereoselective construction of sp3-carbon-rich heterocyclic scaffolds using strained-ring systems has received considerable attention in recent years due to the prominent presence of these scaffolds in myriad natural products, bioactive molecules, and pharmaceutical components. In this area, the catalytic ring-enlargement of vinylaziridines and vinyloxiranes plays a predominant role when synthesizing high sp3-content biorelevant heterocyclic compounds. This article aims to portray recent advancements in the ring-expansion of vinylaziridines and vinyloxiranes for accessing densely functionalized stereoselective heterocycles that have been developed over the past five years, with an emphasis on the substrate scopes and mechanistic insights into the key methodologies, and it is arranged based on the transition metals used and the ring sizes of the heterocyclic scaffolds.
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Affiliation(s)
- Tanumay Sarkar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Kangkan Talukdar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Bijay Ketan Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| | - Tariq A Shah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India. and Government Srinagar Women's College, Zakura Srinagar 190006, India
| | - Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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8
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Chai W, Zhou Q, Ai W, Zheng Y, Qin T, Xu X, Zi W. Lewis-Acid-Promoted Ligand-Controlled Regiodivergent Cycloaddition of Pd-Oxyallyl with 1,3-Dienes: Reaction Development and Origins of Selectivities. J Am Chem Soc 2021; 143:3595-3603. [DOI: 10.1021/jacs.0c13412] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Weiwei Chai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qingyang Zhou
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wenna Ai
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yin Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tianzhu Qin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiufang Xu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Weiwei Zi
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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9
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Griffith DR, Shoemaker AH. Synthetic Approaches to Non-Tropane, Bridged, Azapolycyclic Ring Systems Containing Seven-Membered Carbocycles. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1707385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThis Short Review highlights various synthetic approaches to bridged azabicyclic ring systems containing seven-membered carbocyclic rings. Such ring systems are common to a number of biologically active natural products. The seven-membered ring in such systems is generally formed in one of four ways: 1) cyclization of an acyclic precursor; 2) ring expansion or rearrangement of a different ring size; 3) cycloaddition; and 4) use of a synthetic building block with the seven-membered ring already present. Representative examples of each approach from both total synthesis and methodological studies are discussed, with an emphasis on work publishedin the last twenty years.1 Introduction2 Cyclization Reactions3 Ring Expansions and Rearrangements4 Cycloadditions5 Strategies Involving Seven-Membered Ring Building Blocks6 Conclusion
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10
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Selvaraj K, Chauhan S, Sandeep K, Swamy KCK. Advances in [4+3]‐Annulation/Cycloaddition Reactions Leading to Homo‐ and Heterocycles with Seven‐Membered Rings. Chem Asian J 2020; 15:2380-2402. [DOI: 10.1002/asia.202000545] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/06/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Karuppu Selvaraj
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
| | - Sachin Chauhan
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
| | - K. Sandeep
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
| | - K. C. Kumara Swamy
- School of ChemistryUniversity of Hyderabad Hyderabad-500046 Telangana India
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11
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Trost BM, Huang Z. Catalytic (3+2) Palladium‐Aminoallyl Cycloaddition with Conjugated Dienes. Angew Chem Int Ed Engl 2019; 58:6396-6399. [DOI: 10.1002/anie.201900693] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Zhongxing Huang
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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12
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Trost BM, Huang Z. Catalytic (3+2) Palladium‐Aminoallyl Cycloaddition with Conjugated Dienes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900693] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Zhongxing Huang
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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13
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Suzuki T, Tanino K, Yanagisawa T. An Intermolecular [4+3] Cycloaddition Reaction Using 3-Hydroxy-2-pyrone Derivatives with an Oxyallyl Cation. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)79] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Okamoto T, Shibata M, Karanjit S, Nakayama A, Yoshida M, Namba K. Direct Synthesis of Polycyclic Tropinones by a Condensation-[4+3]-Cycloaddition Cascade Reaction. Chemistry 2018; 24:9508-9513. [PMID: 29701268 DOI: 10.1002/chem.201802011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Indexed: 11/07/2022]
Abstract
A concise method of constructing polycyclic tropinone frameworks was developed. The single-step synthesis of polycyclic tropinone consists of an intramolecular [4+3] cycloaddition reaction of N-nosyl-pyrrole with oxyallyl cation that was generated in situ by an intermolecular condensation reaction of the nucleophilic functional groups on a tethered pyrrole with the aldehyde of 2-(silyloxy)-acrolein. This cascade reaction afforded various polycyclic tropinones including tri-, tetra-, and pentacyclic systems in high yields as single diastereomers.
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Affiliation(s)
- Tsubasa Okamoto
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Miki Shibata
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Sangita Karanjit
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Atsushi Nakayama
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
| | - Masahiro Yoshida
- Department of Pharmaceutical Science, Tokushima bunri University, Tokushima, 770-8514, Japan
| | - Kosuke Namba
- Department of Pharmaceutical Science, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505, Japan
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15
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Yin Z, He Y, Chiu P. Application of (4+3) cycloaddition strategies in the synthesis of natural products. Chem Soc Rev 2018; 47:8881-8924. [DOI: 10.1039/c8cs00532j] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review summarizes the applications of (4+3) cycloadditions, both classical and formal, in the syntheses of natural products in the last two decades.
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Affiliation(s)
- Zengsheng Yin
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- P. R. China
| | - Yun He
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- P. R. China
| | - Pauline Chiu
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- P. R. China
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