1
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Rasheed F, Nikolaev A, Dhesi A, Zeng T, Guo YX, Krishna Y, Komijani S, Orellana A. Mild and catalytic electrocyclizations of heptatrienyl anions. Chem Sci 2024; 15:8163-8169. [PMID: 38817559 PMCID: PMC11134338 DOI: 10.1039/d4sc00926f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/25/2024] [Indexed: 06/01/2024] Open
Abstract
We report the synthesis of functionalized cycloheptanes by thermal electrocyclization of heptatrienyl anions under mild conditions. In addition, we disclose the first examples of this electrocyclization manifold conducted under catalytic conditions. Previously, electrocyclization of heptatrienyl systems required formation of anions with a strong base, resulting in limited functional group compatibility. We demonstrate that polarization of heptatrienyl anions using strategically positioned electron-withdrawing groups lowers the energy landscape of the reaction by stabilizing both the acyclic heptatrienyl anion and cycloheptadienyl product. Divergent reactivity is observed between aliphatic and aromatic substrates, with the latter requiring only catalytic amounts of base for complete conversion. This can be rationalized by the relative stability of the acyclic and cyclic anions and their ability to participate in a chain reaction process.
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Affiliation(s)
- Faizan Rasheed
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
| | - Andrei Nikolaev
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
| | - Anmol Dhesi
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
| | - Tao Zeng
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
| | - You Xuan Guo
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
| | - Yarkali Krishna
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
| | - Samira Komijani
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
| | - Arturo Orellana
- Department of Chemistry, York University 4700 Keele Street Toronto ON. M3J 1P3 Canada
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2
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Saito H, Kato R, Ikeuchi K, Suzuki T, Tanino K. 8π Electrocyclic Reaction of Phosphonate Derivatives: Access to Seven-Membered Cross-Conjugated Cyclic Trienes. Org Lett 2021; 23:9606-9610. [PMID: 34881898 DOI: 10.1021/acs.orglett.1c03815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An anionic 8π electrocyclic reaction of 4-(diethoxyphosphoryl)-1,3,6-heptatriene derivatives was developed. Under the influence of a base, the substrate underwent deprotonation at the C5 position followed by the 8π electrocyclization of the resulting heptatrienyl anion. The subsequent Horner-Wadsworth-Emmons reaction in one pot, following the addition of an aldehyde, resulted in the production of the 3-alkylidene-1,4-cycloheptadiene derivative. The electrocyclic reaction proceeded in a stereospecific manner, resulting in the stereocontrolled formation of two neighboring stereogenic centers.
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Affiliation(s)
- Hiroki Saito
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Ranmaru Kato
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Kazutada Ikeuchi
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Takahiro Suzuki
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Keiji Tanino
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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3
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Rivera‐Chao E, Fañanás‐Mastral M. Stereoselective Synthesis of Highly Substituted 1,3-Dienes via "à la carte" Multifunctionalization of Borylated Dendralenes. Angew Chem Int Ed Engl 2021; 60:16922-16927. [PMID: 34043856 PMCID: PMC8362018 DOI: 10.1002/anie.202104741] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/12/2021] [Indexed: 01/05/2023]
Abstract
Despite the high relevance of 1,3-dienes, stereoselective methods to access tetrasubstituted conjugated dienes are still scarce. We here report an efficient and modular approach that provides access to multifunctional tetrasubstituted 1,3-dienes with excellent levels of regio- and stereoselectivity. This methodology is based on a tetracomponent reaction between a borylated dendralene, an organolithium reagent and two different electrophiles. Mechanistic studies reveal that this transformation proceeds through a regio- and stereoselective carbolithiation/electrophilic trapping of an in situ formed dendralenic boron-ate complex, followed by a stereoretentive halodeborylation. The ease in which complex structural dienes can be accessed and their synthetic versatility highlight the importance and utility of this method.
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Affiliation(s)
- Eva Rivera‐Chao
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
| | - Martín Fañanás‐Mastral
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela15782Santiago de CompostelaSpain
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4
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Rivera‐Chao E, Fañanás‐Mastral M. Stereoselective Synthesis of Highly Substituted 1,3‐Dienes via “à la carte” Multifunctionalization of Borylated Dendralenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104741] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Eva Rivera‐Chao
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Martín Fañanás‐Mastral
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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5
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Marsico G, Scafato P, Belviso S, Superchi S. Regio- and stereoselective intermolecular carbolithiation reactions. RSC Adv 2020; 10:32581-32601. [PMID: 35516521 PMCID: PMC9056694 DOI: 10.1039/d0ra06101h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 08/22/2020] [Indexed: 01/02/2023] Open
Abstract
Carbolithiation of alkenes provides a powerful tool for the construction of up to two novel carbon–carbon or carbon–heteroatoms bonds in a regio- and stereo-controlled manner. The synthetic potentiality of this reaction is highlighted.
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Affiliation(s)
- G. Marsico
- Dipartimento di Scienze
- Università della Basilicata
- Potenza
- Italy
| | - P. Scafato
- Dipartimento di Scienze
- Università della Basilicata
- Potenza
- Italy
| | - S. Belviso
- Dipartimento di Scienze
- Università della Basilicata
- Potenza
- Italy
| | - S. Superchi
- Dipartimento di Scienze
- Università della Basilicata
- Potenza
- Italy
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6
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Fukuyama T, Okada T, Nakashima N, Ryu I. Radical Mediated Aza‐
Pauson‐Khand
Reaction of Acetylenes, Imines, and CO Leading to Five‐Membered Unsaturated Lactams. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takahide Fukuyama
- Department of Chemistry, Graduate School of ScienceOsaka Prefecture University, Sakai Osaka 599-8531 Japan
| | - Takuma Okada
- Department of Chemistry, Graduate School of ScienceOsaka Prefecture University, Sakai Osaka 599-8531 Japan
| | - Nao Nakashima
- Department of Chemistry, Graduate School of ScienceOsaka Prefecture University, Sakai Osaka 599-8531 Japan
| | - Ilhyong Ryu
- Department of Chemistry, Graduate School of ScienceOsaka Prefecture University, Sakai Osaka 599-8531 Japan
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 30010 Taiwan
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7
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Deny LJ, Traboulsi H, Cantin AM, Marsault É, Richter MV, Bélanger G. Bis-Michael Acceptors as Novel Probes to Study the Keap1/Nrf2/ARE Pathway. J Med Chem 2016; 59:9431-9442. [PMID: 27682717 DOI: 10.1021/acs.jmedchem.6b01132] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2) is a master regulator that promotes the transcription of cytoprotective genes in response to oxidative/electrophilic stress. Various Michael-type compounds were designed and synthesized, and their potency to activate the Keap1/Nrf2/ARE pathway was evaluated. Compounds bearing two Michael-type acceptors proved to be the most active. Tether length and rigidity between the acceptors was crucial. This study will help to understand how this feature disrupts the interaction between Keap1 and Nrf2.
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Affiliation(s)
- Ludovic J Deny
- Département de Chimie, Université de Sherbrooke , 2500 Boulevard Université, Sherbrooke, Québec J1K 2R1, Canada.,Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada
| | - Hussein Traboulsi
- Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada.,Département de Médecine, Service de Pneumologie et Centre de Recherche Clinique, Centre Hospitalier de l'Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada
| | - André M Cantin
- Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada.,Département de Médecine, Service de Pneumologie et Centre de Recherche Clinique, Centre Hospitalier de l'Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada
| | - Éric Marsault
- Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada.,Département de Pharmacologie, Université de Sherbrooke , Sherbrooke, Québec J1K 2R1, Canada
| | - Martin V Richter
- Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada.,Département de Médecine, Service de Pneumologie et Centre de Recherche Clinique, Centre Hospitalier de l'Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada
| | - Guillaume Bélanger
- Département de Chimie, Université de Sherbrooke , 2500 Boulevard Université, Sherbrooke, Québec J1K 2R1, Canada.,Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke , Sherbrooke, Québec J1H 5N4, Canada
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8
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Beng TK, Takeuchi H, Weber M, Sarpong R. Stereocontrolled synthesis of vicinally functionalized piperidines by nucleophilic β-addition of alkyllithiums to α-aryl substituted piperidine enecarbamates. Chem Commun (Camb) 2016; 51:7653-6. [PMID: 25845938 DOI: 10.1039/c5cc01307k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Substituted piperidines are emerging as important medicinally-active structural motifs. Here, we report highly stereoselective carbolithiation reactions of α-aryl piperidine enecarbamates that offer direct access to vicinally-substituted piperidine compounds. We have also demonstrated that the carbanion intermediates can be trapped with a carbon electrophile.
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Affiliation(s)
- Timothy K Beng
- Department of Chemistry, Susquehanna University, 514 University Avenue, Selinsgrove, PA 17870, USA
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9
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Shao LD, Xu J, Li XN, Zhang ZJ, Shi X, Ren J, He J, Zhao Y, Leng Y, Xia C, Zhao QS. Synthesis of hupehenols A, B, and E from protopanaxadiol. RSC Adv 2016. [DOI: 10.1039/c6ra04236h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A unified semisynthesis approach from protopanaxadiol to hupehenols A, B, and E was described. The synthesis provided the primary SAR and the possibility of further medicinal development of hupehenols.
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10
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Catalytic enantioselective synthesis of indanes by a cation-directed 5-endo-trig cyclization. Nat Chem 2015; 7:171-7. [DOI: 10.1038/nchem.2150] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 11/25/2014] [Indexed: 01/28/2023]
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11
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Williams DR, Mondal PK, Bawel SA, Nag PP. Stereocontrolled Synthesis of the Tricyclic ABC Ring System of Daphnicyclidin A. Org Lett 2014; 16:1956-9. [DOI: 10.1021/ol5005092] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- David R. Williams
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Prolay K. Mondal
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Seth A. Bawel
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Partha P. Nag
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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12
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Reich HJ. Role of Organolithium Aggregates and Mixed Aggregates in Organolithium Mechanisms. Chem Rev 2013; 113:7130-78. [DOI: 10.1021/cr400187u] [Citation(s) in RCA: 248] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Hans J. Reich
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
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13
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Fukuyama T, Nakashima N, Okada T, Ryu I. Free-Radical-Mediated [2 + 2 + 1] Cycloaddition of Acetylenes, Amidines, and CO Leading to Five-Membered α,β-Unsaturated Lactams. J Am Chem Soc 2013; 135:1006-8. [DOI: 10.1021/ja312654q] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takahide Fukuyama
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531,
Japan
| | - Nao Nakashima
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531,
Japan
| | - Takuma Okada
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531,
Japan
| | - Ilhyong Ryu
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531,
Japan
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14
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Hopf H, Sherburn MS. Dendralene auf dem Vormarsch: kreuzkonjugierte Oligoene ermöglichen den schnellen Aufbau molekularer Komplexität. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201102987] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Hopf H, Sherburn MS. Dendralenes Branch Out: Cross-Conjugated Oligoenes Allow the Rapid Generation of Molecular Complexity. Angew Chem Int Ed Engl 2012; 51:2298-338. [DOI: 10.1002/anie.201102987] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 09/12/2011] [Indexed: 11/11/2022]
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16
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Affiliation(s)
- Naoyuki Shimada
- Department of Chemistry, University of Hawaii, 2545 The Mall, Honolulu, Hawaii 96822, U.S.A
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17
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Woo CM, Lu L, Gholap SL, Smith DR, Herzon SB. Development of a Convergent Entry to the Diazofluorene Antitumor Antibiotics: Enantioselective Synthesis of Kinamycin F. J Am Chem Soc 2010; 132:2540-1. [DOI: 10.1021/ja910769j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christina M. Woo
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
| | - Liang Lu
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
| | | | - Devin R. Smith
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
| | - Seth B. Herzon
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
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18
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Baktharaman S, Afagh N, Vandersteen A, Yudin AK. Unprotected Vinyl Aziridines: Facile Synthesis and Cascade Transformations. Org Lett 2009; 12:240-3. [DOI: 10.1021/ol902550q] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Busacca CA, Bartholomeyzik T, Cheekoori S, Grinberg N, Lee H, Ma S, Saha A, Shen S, Senanayake CH. On the Racemization of Chiral Imidazolines. J Org Chem 2008; 73:9756-61. [DOI: 10.1021/jo8024384] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carl A. Busacca
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Teresa Bartholomeyzik
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Sreedhar Cheekoori
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Nelu Grinberg
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Heewon Lee
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Shengli Ma
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Anjan Saha
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Sherry Shen
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
| | - Chris H. Senanayake
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877
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20
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Hogan AML, O’Shea DF. Synthetic applications of carbolithiation transformations. Chem Commun (Camb) 2008:3839-51. [DOI: 10.1039/b805595e] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Melero C, Guijarro A, Baumann V, Pérez-Jiménez ÁJ, Yus M. Carbolithiation of Simple Terminal and Strained Internal Alkenes by the Naphthalene and the Biphenyl Dianion: New Modes of Reactivity of Highly Reduced Organic Species in Solution. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700447] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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