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Yang JW, Tan GQ, Liang KC, Xu KD, Su M, Liu F. Copper-Catalyzed, N-Directed Distal C(sp 3)-H Functionalization toward Azepanes. Org Lett 2022; 24:7796-7800. [PMID: 36264027 DOI: 10.1021/acs.orglett.2c03135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We herein report a copper-catalyzed formal [5 + 2] aza-annulation of N-fluorosulfonamides and 1,3-dienes/1,3-enynes for synthesis of structurally diverse alkene/alkyne-containing azepanes. The reaction features selective functionalization of distal unactivated C(sp3)-H bonds and a broad substrate scope, thus allowing the late-stage modification of pharmaceuticals and natural products. A radical mechanism involving 1,5-hydrogen atom transfer of N-radicals, facile coupling of alkyl radicals with 1,3-dienes/1,3-enynes, and the construction of azepane motifs via C-N bond formation is proposed.
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Affiliation(s)
- Jia-Wen Yang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Guang-Qiang Tan
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Kai-Cheng Liang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Ke-Dong Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Ma Su
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China
| | - Feng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, People's Republic of China.,Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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2
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Meng Y, Zhu W, Song Y, Bu G, Zhang L, Xu F. Rhodium(III)‐Catalyzed Oxidative Annulation of Amidines with Alkynes
via
Sequential C−H Bond Activation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yan‐Yu Meng
- Department of College of Science Henan Agricultural University Zhengzhou 450002 P. R. China
| | - Wen‐Jing Zhu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Yuan‐Yuan Song
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Gang‐Gang Bu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Li‐Juan Zhang
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Fen Xu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
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3
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Gao Y, Song X, Yan RJ, Du W, Chen YC. Asymmetric β,γ′-regioselective [4 + 3] and [4 + 2] annulations of α-vinylenals via cascade iminium ion-dienamine catalysis. Org Biomol Chem 2021; 19:151-155. [PMID: 33112340 DOI: 10.1039/d0ob02068k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
α-Vinylenal substrates have been designed and applied in β,γ′-regioselective asymmetric [4 + 3] and [4 + 2] annulation reactions via cascade aminocatalysis.
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Affiliation(s)
- Yang Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Xue Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Ru-Jie Yan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
- China
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4
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Ahn HI, Park JU, Xuan Z, Kim JH. Pd-Catalyzed asymmetric [5 + 2] cycloaddition of vinylethylene carbonates and cyclic imines: access to N-fused 1,3-oxazepines. Org Biomol Chem 2020; 18:9826-9830. [DOI: 10.1039/d0ob02159h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile route to access enantioenriched N-fused 1,3-oxazepines via Pd-catalyzed asymmetric [5 + 2] cycloaddition of vinylethylene carbonates and cyclic imines has been developed.
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Affiliation(s)
- Hye-In Ahn
- Department of Chemistry (BK21)
- Research Institute of Natural Science
- Gyeongsang National University
- 52828, Jinju
- Korea
| | - Jong-Un Park
- Department of Chemistry (BK21)
- Research Institute of Natural Science
- Gyeongsang National University
- 52828, Jinju
- Korea
| | - Zi Xuan
- Department of Chemistry (BK21)
- Research Institute of Natural Science
- Gyeongsang National University
- 52828, Jinju
- Korea
| | - Ju Hyun Kim
- Department of Chemistry (BK21)
- Research Institute of Natural Science
- Gyeongsang National University
- 52828, Jinju
- Korea
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5
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Liu S, Qu J, Wang B. Substrate-controlled divergent synthesis of polycyclic indoloazepines and indolodiazepines via 1,5-hydride shift/7-cyclization cascades. Chem Commun (Camb) 2018; 54:7928-7931. [PMID: 29951657 DOI: 10.1039/c8cc03804j] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Novel and practical acid-catalyzed cyclization of 2-indolyl aryl carbinols via tandem dehydration/1,5-hydride shift/7-cyclization sequences has been developed. By appropriate variation of the substrate, diverse polycyclic-fused indoles were synthesized in good yield, thus demonstrating the high efficiency, transition-metal-free nature, and high step/atom economy of the synthesis strategy.
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Affiliation(s)
- Siyuan Liu
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China.
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Chen J, Huang Y. Phosphine-Catalyzed Sequential [4 + 3] Domino Annulation/Allylic Alkylation Reaction of MBH Carbonates: Efficient Construction of Seven-Membered Heterocycles. Org Lett 2017; 19:5609-5612. [DOI: 10.1021/acs.orglett.7b02742] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Junlong Chen
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, College
of Chemistry, Nankai University, Tianjin 300071, China
| | - You Huang
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, College
of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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7
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Lavaud C, Massiot G. The Iboga Alkaloids. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2017; 105:89-136. [PMID: 28194562 DOI: 10.1007/978-3-319-49712-9_2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Iboga alkaloids are a particular class of indolomonoterpenes most often characterized by an isoquinuclidine nucleus. Their first occurrence was detected in the roots of Tabernanthe iboga, a sacred plant to the people of Gabon, which made it cult object. Ibogaine is the main representative of this class of alkaloids and its psychoactive properties are well documented. It has been proposed as a drug cessation treatment and has a wide range of activities in targeting opioids, cocaine, and alcohol. The purpose of this chapter is to provide a background on this molecule and related compounds and to update knowledge on the most recent advances made. Difficulties linked to the status of ibogaine as a drug in several countries have hampered its development, but 18-methoxycoronaridine is currently under evaluation for the same purposes and for the treatment of leishmaniasis. The chapter is divided into six parts: an introduction aiming at defining what is called an iboga alkaloid, and this is followed by current knowledge on their biosynthesis, which unfortunately remains a "black box" as far as the key construction step is concerned. Many of these alkaloids are still being discovered and the third and fourth parts of the chapter discuss the analytical tools in use for this purpose and give lists of new monomeric and dimeric alkaloids belonging to this class. When necessary, the structures are discussed especially with regard to absolute configuration determinations, which remain a point of weakness in their assignments. Part V gives an account of progress made in the synthesis, partial and total, which the authors believe is key to providing solid solutions to the industrial development of the most promising molecules. The last part of the chapter is devoted to the biological properties of iboga alkaloids, with particular emphasis on ibogaine and 18-methoxycoronaridine.
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Affiliation(s)
- Catherine Lavaud
- Faculty of Pharmacy, Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Case postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 51687, Reims, Cedex 2, France.
| | - Georges Massiot
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Case postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 51687, Reims, Cedex 2, France
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8
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Zhu C, Feng J, Zhang J. Rhodium(I)‐Catalyzed Intermolecular Aza‐[4+3] Cycloaddition of Vinyl Aziridines and Dienes: Atom‐Economical Synthesis of Enantiomerically Enriched Functionalized Azepines. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609608] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Chao‐Ze Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China
| | - Jian‐Jun Feng
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry, CAS 345 Lingling Road Shanghai 200032 China
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9
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Zhu C, Feng J, Zhang J. Rhodium(I)‐Catalyzed Intermolecular Aza‐[4+3] Cycloaddition of Vinyl Aziridines and Dienes: Atom‐Economical Synthesis of Enantiomerically Enriched Functionalized Azepines. Angew Chem Int Ed Engl 2016; 56:1351-1355. [DOI: 10.1002/anie.201609608] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Chao‐Ze Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China
| | - Jian‐Jun Feng
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry, CAS 345 Lingling Road Shanghai 200032 China
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10
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Wang TT, Zhao L, Zhang YJ, Liao WW. Pd-Catalyzed Intramolecular Cyclization via Direct C–H Addition to Nitriles: Skeletal Diverse Synthesis of Fused Polycyclic Indoles. Org Lett 2016; 18:5002-5005. [DOI: 10.1021/acs.orglett.6b02460] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ting-Ting Wang
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Lang Zhao
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yan-Jing Zhang
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Wei-Wei Liao
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
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11
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Huang L, Dai LX, You SL. Enantioselective Synthesis of Indole-Annulated Medium-Sized Rings. J Am Chem Soc 2016; 138:5793-6. [DOI: 10.1021/jacs.6b02678] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Lin Huang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Li-Xin Dai
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
- Collaborative
Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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12
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Martin RM, Bergman RG, Ellman JA. Synthesis of isoquinuclidines from highly substituted dihydropyridines via the Diels-Alder reaction. Org Lett 2013; 15:444-7. [PMID: 23320852 PMCID: PMC3570756 DOI: 10.1021/ol303040r] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A stereo- and regioselective Diels-Alder reaction for the synthesis of highly substituted isoquinuclidines from dihydropyridines and electron-deficient alkenes has been developed. While reactions with activated dienophiles proceed readily under thermal conditions, the use of Lewis acid additives is necessary to facilitate cycloadditions for less reactive alkenes. This procedure affords the target compounds in high yields and diastereoselectivities.
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Affiliation(s)
- Rhia M Martin
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA
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14
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Pramanik C, Bhumkar R, Karhade G, Khairnar P, Tripathy NK, Gurjar MK. Efficient Synthesis of Impurity-C of Antimigraine Agent Rizatriptan Benzoate. Org Process Res Dev 2012. [DOI: 10.1021/op200284m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chinmoy Pramanik
- API R&D Centre, Emcure Pharmaceuticals Ltd., ITBT Park, Phase-II, MIDC, Hinjewadi, Pune-411057, India
| | - Rahul Bhumkar
- API R&D Centre, Emcure Pharmaceuticals Ltd., ITBT Park, Phase-II, MIDC, Hinjewadi, Pune-411057, India
| | - Ganesh Karhade
- API R&D Centre, Emcure Pharmaceuticals Ltd., ITBT Park, Phase-II, MIDC, Hinjewadi, Pune-411057, India
| | - Pravinkumar Khairnar
- API R&D Centre, Emcure Pharmaceuticals Ltd., ITBT Park, Phase-II, MIDC, Hinjewadi, Pune-411057, India
| | - Narendra Kumar Tripathy
- API R&D Centre, Emcure Pharmaceuticals Ltd., ITBT Park, Phase-II, MIDC, Hinjewadi, Pune-411057, India
| | - Mukund K. Gurjar
- API R&D Centre, Emcure Pharmaceuticals Ltd., ITBT Park, Phase-II, MIDC, Hinjewadi, Pune-411057, India
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Jana GK, Paul S, Sinha S. Progress in the Synthesis of Iboga-alkaloids and their Congeners. ORG PREP PROCED INT 2011. [DOI: 10.1080/00304948.2011.629563] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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