1
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Tangdenpaisal K, Kheakwanwong W, Ruchirawat S, Ploypradith P. Dihydro-10 H-indeno[1,2- b]benzofurans and Tetrahydroindeno[1,2- c]isochromenes via Stereoselective Intramolecular Carbocation Cascade Cyclization. J Org Chem 2024; 89:2964-2983. [PMID: 38345392 DOI: 10.1021/acs.joc.3c02380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Nazarov cyclization of the (E)-(2-stilbenyl)methanols under the catalysis of p-TsOH immobilized on silica (PTS-Si) proceeded to give the corresponding indanyl cation with the exclusive trans relationship at the two newly formed adjacent stereogenic centers. The ensuing intramolecular nucleophilic addition by the MOM-protected phenol (m = 0) or benzyl alcohol (m = 1) furnished the Indane-fused benzofuran [5/5] or isochroman [5/6] system, respectively, with the exclusive cis stereocontrol at the two-carbon ring junction. Thus, in a single step, from nonchiral starting materials, the intramolecular cascade carbocation cyclization (CCC) furnished the [5/5] or [5/6] oxygen-containing Indane fused-ring systems in moderate to good yields with excellent stereoselectivity on all three contiguous stereogenic centers.
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Affiliation(s)
- Kassrin Tangdenpaisal
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
| | - Wichita Kheakwanwong
- Program in Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Program in Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Center of Excellence on Environmental Health and Toxicology, Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand 10400
| | - Poonsakdi Ploypradith
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Program in Chemical Sciences, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok, Thailand 10210
- Center of Excellence on Environmental Health and Toxicology, Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand 10400
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2
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Almubayedh S, Green JR. Alkynedicobalt mediated vinylogous Nazarov reactions. Org Biomol Chem 2021; 20:1004-1007. [PMID: 34951440 DOI: 10.1039/d1ob02256c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The SnCl4 mediated reactions of cross conjugated aryl enynone-Co2(CO)6 and dienynone-Co2(CO)6 complexes afford benzocycloheptynone complexes or cycloheptenynone complexes in a thermal vinylogous Nazarov process. The rate of ring closure is strongly dependent on the ketone α-substituent.
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Affiliation(s)
- Somaiah Almubayedh
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, N9B 3P4, Canada.
| | - James R Green
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, N9B 3P4, Canada.
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3
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Bhat AH, Quiroga GN, La-Venia A, Grover HK, Riveira MJ. Biomimetic Domino Knoevenagel/Cycloisomerization Strategy for the Synthesis of Citridone A and Derivatives. J Org Chem 2021; 86:12226-12236. [PMID: 34410723 DOI: 10.1021/acs.joc.1c01542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studies on Knoevenagel condensations between conjugated dienals and 4-hydroxy-2-pyridone/quinolone-type 1,3-dicarbonyl equivalents led to the development of a simple one-pot strategy to access citridone A and related synthetic cyclopenta[b]furopyridones/quinolones. The present work highlights the power of domino cascades in the synthesis of natural product frameworks and may help promote future studies on this promising new class of pyridone alkaloids.
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Affiliation(s)
- Aabid H Bhat
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X7, Canada
| | - Gastón N Quiroga
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Agustina La-Venia
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Huck K Grover
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X7, Canada
| | - Martín J Riveira
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
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4
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Abstract
Interrupted reactions reroute established processes to new and often unanticipated end points. Of particular interest are the cases in which a known reactive intermediate takes on a new reaction pathway, either because this pathway is lower in energy or because the conventional pathway is no longer available. Through analysis of documented cases, we aim to dissect the known interrupted reactions and trace their mechanistic origins. As new chemical processes are being discovered at a seemingly ever-increasing pace, it is likely that new interrupted reactions will continue to emerge. Our hope is that the cases considered in this Review will help identify new classes of these fascinating transformations.
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5
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Kumar K, Kumar P, Singh B, Yadav S, Mishra UK, Ansari AJ, Ramasastry SSV. Hypothesis-Driven Palladium-Catalyzed Transformations for the Construction of New Molecular Architectures. CHEMICAL RECORD (NEW YORK, N.Y.) 2021; 21:3470-3482. [PMID: 33971073 DOI: 10.1002/tcr.202100095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/20/2021] [Accepted: 04/20/2021] [Indexed: 11/09/2022]
Abstract
The development of new synthetic protocols to access diverse molecular scaffolds from readily available starting compounds is of significance in both academia and industry. Towards this, the catalysis by transition metals has been employed as a powerful tool to access molecules with broad structural and functional diversity. An overview of the recent literature manifested the tremendous potential of transition metal-catalyzed processes in advancing organic synthesis in a new direction. This account compiles new conceptual advancements in the palladium-catalyzed Alder-ene type cycloisomerization reactions, C-H functionalizations, and one-pot multicatalytic processes, which have become essential tools to access new classes of molecules.
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Affiliation(s)
- Ketan Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Prashant Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Bara Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Sonu Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Uttam K Mishra
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Arshad J Ansari
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
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6
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Vincent G, Abou-Hamdan H, Kouklovsky C. Dearomatization Reactions of Indoles to Access 3D Indoline Structures. Synlett 2020. [DOI: 10.1055/s-0040-1707152] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
This Account summarizes our involvement in the development of dearomatization reactions of indoles that has for origin a total synthesis problematic. We present the effort from our group to obtain 3D-indolines scaffold from the umpolung of N-acyl indoles via activation with FeCl3 to the oxidative spirocyclizations of N-EWG indoles and via the use of electrochemistry.1 Introduction2 Activation of N-Acyl Indoles with FeCl3
2.1 Hydroarylation of N-Acyl Indoles2.2 Difunctionalization of N-Acyl Indoles3 Radical-Mediated Dearomatization of Indoles for the Synthesis of Spirocyclic Indolines4 Electrochemical Dearomatization of Indoles4.1 Direct Electrochemical Oxidation of Indoles4.2 Indirect Electrochemical Oxidation of Indoles5 Conclusion
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7
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Kobayashi T, Takizawa I, Kawamoto Y, Ito H. Sequential condensation-6π-electrocyclization reaction of a chiral 1,3-Diketone possessing C2 symmetry. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151897] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Hou KQ, Chen XP, Huang Y, Chan ASC, Luo HB, Xiong XF. Asymmetric Total Synthesis and Biological Evaluation of the Natural PDE4 Inhibitor Toddacoumalone. Org Lett 2020; 22:584-588. [DOI: 10.1021/acs.orglett.9b04355] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ke-Qiang Hou
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xue-Ping Chen
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yiyou Huang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Albert S. C. Chan
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Hai-Bin Luo
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xiao-Feng Xiong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
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9
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Affiliation(s)
- Anton V. Yadykov
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 47 Leninsky prosp., 119991 Moscow Russian Federation
| | - Valerii Z. Shirinian
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 47 Leninsky prosp., 119991 Moscow Russian Federation
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10
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Riveira MJ, Marcarino MO, La-Venia A. Multicomponent Domino Synthesis of Cyclopenta[b]furan-2-ones. Org Lett 2018; 20:4000-4004. [DOI: 10.1021/acs.orglett.8b01567] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Martín J. Riveira
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Maribel O. Marcarino
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Agustina La-Venia
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, S2002LRK Rosario, Argentina
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11
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Bankar SK, Singh B, Tung P, Ramasastry SSV. Palladium-Catalyzed Intramolecular Trost-Oppolzer-Type Alder-Ene Reaction of Dienyl Acetates to Cyclopentadienes. Angew Chem Int Ed Engl 2018; 57:1678-1682. [PMID: 29219255 DOI: 10.1002/anie.201711797] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 01/17/2023]
Abstract
A new approach to the synthesis of highly substituted cyclopentadienes, indenes, and cyclopentene-fused heteroarenes by means of the Pd-catalyzed Trost-Oppolzer-type intramolecular Alder-ene reaction of 2,4-pentadienyl acetates is described. This unprecedented transformation combines the electrophilic features of the Tsuji-Trost reaction with the nucleophilic features of the Alder-ene reaction. The overall outcome can be perceived as a hitherto unknown "acid-free" iso-Nazarov-type cyclization. The versatility of this strategy was further demonstrated by the formal synthesis of paucifloral F, a resveratrol-based natural product.
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Affiliation(s)
- Siddheshwar K Bankar
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Bara Singh
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Pinku Tung
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
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12
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Bankar SK, Singh B, Tung P, Ramasastry SSV. Palladium-Catalyzed Intramolecular Trost-Oppolzer-Type Alder-Ene Reaction of Dienyl Acetates to Cyclopentadienes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Siddheshwar K. Bankar
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
| | - Bara Singh
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
| | - Pinku Tung
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
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13
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14
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Abstract
The acid-promoted cycloisomerization of conjugated dienals and linearly-conjugated dienones for the synthesis of five-membered ring systems is reviewed.
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Affiliation(s)
- Martín J. Riveira
- Departamento de Química Orgánica
- Instituto de Química Rosario (CONICET – UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Suipacha 531
| | - Lucía A. Marsili
- Departamento de Química Orgánica
- Instituto de Química Rosario (CONICET – UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Suipacha 531
| | - Mirta P. Mischne
- Departamento de Química Orgánica
- Instituto de Química Rosario (CONICET – UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Suipacha 531
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15
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Lin MH, Chen YC, Chiu SH, Chen YF, Chuang TH. Hypervalent Iodine(III)-Induced Domino Oxidative Cyclization for the Synthesis of Cyclopenta[b]furans. Molecules 2016; 21:E1713. [PMID: 28009840 PMCID: PMC6274509 DOI: 10.3390/molecules21121713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 11/24/2022] Open
Abstract
A new strategy for cyclopenta[b]furan synthesis mediated by hypervalent iodine(III) has been described. The approach employs diacetoxyiodobenzene-induced initial dehydrogenation to a putative trienone intermediate and triggered sequential cycloisomerization to form the cyclo-penta[b]furan targets.
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Affiliation(s)
- Mei-Huey Lin
- Department of Chemistry, National Changhua University of Education, Changhua 50007, Taiwan.
| | - Yu-Chun Chen
- Department of Chemistry, National Changhua University of Education, Changhua 50007, Taiwan.
| | - Shih-Hao Chiu
- Department of Chemistry, National Changhua University of Education, Changhua 50007, Taiwan.
| | - Yun-Fan Chen
- Department of Chemistry, National Changhua University of Education, Changhua 50007, Taiwan.
| | - Tsung-Hsun Chuang
- Department of Chemistry, National Changhua University of Education, Changhua 50007, Taiwan.
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16
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Marques AS, Coeffard V, Chataigner I, Vincent G, Moreau X. Iron-Mediated Domino Interrupted Iso-Nazarov/Dearomative (3 + 2)-Cycloaddition of Electrophilic Indoles. Org Lett 2016; 18:5296-5299. [DOI: 10.1021/acs.orglett.6b02613] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anne-Sophie Marques
- Institut
Lavoisier Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, Université Paris Saclay, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Vincent Coeffard
- Institut
Lavoisier Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, Université Paris Saclay, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Isabelle Chataigner
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques (MS&MT), Université Paris Sud, CNRS, Université Paris Saclay, Bat. 410, 91405 Orsay, France
| | - Xavier Moreau
- Institut
Lavoisier Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, Université Paris Saclay, 45 Avenue des États-Unis, 78035 Versailles cedex, France
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17
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Kamimura A, Moriyama T, Ito Y, Kawamoto T, Uno H. Asymmetric Synthesis of Bicyclic Nitrocyclopropanes from Primary Nitro Compounds and Stereoselective Formation of Tetrahydro-2H-cyclopenta[b]furans via Ring Expansion/Cyclization Reaction. J Org Chem 2016; 81:4664-81. [DOI: 10.1021/acs.joc.6b00566] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Akio Kamimura
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Takaaki Moriyama
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Yuji Ito
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Takuji Kawamoto
- Department
of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Hidemitsu Uno
- Department
of Chemistry, Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
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18
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Wang Z, Xu X, Gu Z, Feng W, Qian H, Li Z, Sun X, Kwon O. Nazarov cyclization of 1,4-pentadien-3-ols: preparation of cyclopenta[b]indoles and spiro[indene-1,4'-quinoline]s. Chem Commun (Camb) 2016; 52:2811-4. [PMID: 26771024 PMCID: PMC5560599 DOI: 10.1039/c5cc08596a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The first Lewis acid-catalyzed intramolecular interrupted Nazarov cyclization of 1,4-pentadien-3-ols is described. Using FeBr3 as the catalyst, a series of new substituted cyclopenta[b]indoles was prepared-through a sequence of Nazarov cyclization, nucleophilic amination, and isomerization-with good yields and high diastereo- and regioselectivities. A similar catalytic process was also developed for the synthesis of structurally interesting spiro[indene-1,4'-quinoline]s.
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Affiliation(s)
- Zhiming Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Xingzhu Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Zhanshou Gu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Wei Feng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Houjun Qian
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Zhengyi Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Xiaoqiang Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA.
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19
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Bhaumik A, Pathak T. Methyl-α-D-2-selenonyl Pent-2-enofuranoside: A Reactive Selenosugar for the Diversity Oriented Synthesis of Enantiomerically Pure Heterocycles, Carbocycles, and Isonucleosides. J Org Chem 2015; 80:11057-64. [PMID: 26509277 DOI: 10.1021/acs.joc.5b01192] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The construction of vinyl selenone on a furanoside led to a highly reactive synthetic intermediate methyl-α-D-2-selenonyl pent-2-enofuranoside composed of a masked aldehyde, an electron-deficient double bond along with an excellent leaving group. This new Michael acceptor on reactions with different nucleophiles afforded bicyclic azasugars, cyclopropanated carbohydrate, dihydrofuran- and dihydroisoxazole- substituted furanosides, and isonucleosides in moderate to good yields. Hydrolysis of the hemiacetal linkage of some of these modified carbohydrates afforded enantiopure aziridines, nitrocyclopropane, and dihydrofuran.
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Affiliation(s)
- Atanu Bhaumik
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
| | - Tanmaya Pathak
- Department of Chemistry, Indian Institute of Technology Kharagpur , Kharagpur 721302, India
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20
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Sheikh NS. 4π electrocyclisation in domino processes: contemporary trends and synthetic applications towards natural products. Org Biomol Chem 2015; 13:10774-96. [PMID: 26440536 DOI: 10.1039/c5ob01703c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent most instructive and reliable literature reports which deal with domino processes involving conrotatory 4π electrocyclic reactions, along with a precise mechanistic insight and latest synthetic applications towards biologically active natural products are concisely reviewed. To inspire further research in this domain, a real insight into the overarching emerging themes and potential imminent prospects is also provided.
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Affiliation(s)
- Nadeem S Sheikh
- Department of Chemistry, Faculty of Science, King Faisal University, P.O. Box 380, Al-Ahsa 31982, Saudi Arabia.
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21
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Riveira MJ, Quiroga GN, Mata EG, Gandon V, Mischne MP. Cycloisomerization of Conjugated Trienones and Isomeric 2H-Pyrans: Unified Strategy toward Cyclopenta[b]furans. J Org Chem 2015; 80:6515-9. [DOI: 10.1021/acs.joc.5b00818] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martín J. Riveira
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
| | - Gastón N. Quiroga
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
| | - Ernesto G. Mata
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
| | - Vincent Gandon
- ICMMO
(UMR CNRS 8182), Université Paris-sud 11, 91405 Orsay Cedex, France
- Institut de Chimie
des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Mirta P. Mischne
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
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22
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Dethe DH, Boda R, Murhade GM. Lewis acid catalyzed Nazarov type cyclization for the synthesis of a substituted indane framework: total synthesis of (±)-mutisianthol. Org Chem Front 2015. [DOI: 10.1039/c5qo00005j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic route has been developed for the synthesis of a substituted indane derivative using Lewis acid catalyzed modified Nazarov type cyclization, which was further applied in the total synthesis of mutisianthol and epi-mutisianthol in a nine step longest linear sequence.
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Affiliation(s)
- Dattatraya H. Dethe
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Raghavender Boda
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Ganesh M. Murhade
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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