1
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Huang BB, Zhao YL, Lei K, Zhong LR, Yang X, Yao ZJ. Enantioselective Total Synthesis of (+)-Sieboldine A and Analogues Thereof. Org Lett 2022; 24:7517-7521. [PMID: 36214606 DOI: 10.1021/acs.orglett.2c02737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An 11-step enantioselective total synthesis of (+)-sieboldine A (1) has been accomplished from (5R)-methylcyclohex-2-en-1-one (16), in which an intramolecular ketone/ester reductive coupling followed by one-pot acidic treatment to quickly construct the unique oxa-spiroacetal and a TsOH-catalyzed displacement to directly form the characteristic N-hydroxyazacyclononane ring successfully served as the key methodologies. Moreover, several full-skeleton analogues of 1 were also synthesized on the basis of the advanced intermediates, and their inhibitory effects on electric eel acetylcholinesterase were examined.
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Affiliation(s)
- Bing-Bing Huang
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Yi-Lu Zhao
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Kaiyu Lei
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Lin-Rui Zhong
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Xiaoliang Yang
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
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2
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Huang BB, Lei K, Zhong LR, Yang X, Yao ZJ. Unified Total Synthesis of Tetracyclic Diquinane Lycopodium Alkaloids (+)-Paniculatine, (-)-Magellanine, and (+)-Magellaninone. J Org Chem 2022; 87:8685-8696. [PMID: 35699523 DOI: 10.1021/acs.joc.2c00871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A unified route for the total synthesis of three tetracyclic diquinane Lycopodium alkaloids (+)-paniculatine, (-)-magellanine, and (+)-magellaninone has been accomplished in 13-14 overall steps based on late-stage diverse transformations from an advanced tetracyclic common intermediate. In the established synthesis, quick formation of the two five-membered rings was efficiently achieved by an intramolecular reductive coupling of ketone-carbonyl and ester-carbonyl and an organocatalytic intramolecular Michael addition of aldehyde-derived enamine to an internal enone functionality with satisfactory redox and step economies and excellent stereoselectivities, providing the requisite tricyclic carbo-framework possessing multiple dense stereogenic centers, and an intramolecular reductive amination finally furnished the essential piperidine ring.
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Affiliation(s)
- Bing-Bing Huang
- State Key Laboratory of Coordination Chemistry, and Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Kaiyu Lei
- State Key Laboratory of Coordination Chemistry, and Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Lin-Rui Zhong
- State Key Laboratory of Coordination Chemistry, and Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Xiaoliang Yang
- State Key Laboratory of Coordination Chemistry, and Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry, and Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
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3
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Zhong LR, Huang BB, Yang XL, Wang S, Yao ZJ. Concise Unified Access to (-)-8-Deoxy-13-dehydroserratinine, (+)-Fawcettimine, (+)-Fawcettidine, and (-)-8-Deoxyserratinine Using a Direct Intramolecular Reductive Coupling. Org Lett 2021; 23:3578-3583. [PMID: 33891425 DOI: 10.1021/acs.orglett.1c00977] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A short, scalable, and collective total synthesis of four fawcettimine-type Lycopodium alkaloids in eight or nine steps is disclosed. A dense multi-small-ring spiro-α-aminocyclopentanone successfully served as the key intermediate, which was directly accessed by a LiDBB-mediated intramolecular reductive coupling of the aliphatic imine and an ester-carbonyl. Compared to those that employ classical Heathcock intermediate(s) containing a nine-membered ring, the new strategy shows the significant improvement of the synthetic step and redox economies as well as excellent stereochemical control.
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Affiliation(s)
- Lin-Rui Zhong
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Bing-Bing Huang
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Xiao-Liang Yang
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu 210023, China
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4
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Affiliation(s)
- Kengo Inoue
- Department of Chemical Science and Engineering Kobe University Rokkodai, Nada, Kobe 657-8501 Japan
| | - Kentaro Okano
- Department of Chemical Science and Engineering Kobe University Rokkodai, Nada, Kobe 657-8501 Japan
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5
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Hill RR, Rychnovsky SD. Generation, Stability, and Utility of Lithium 4,4′-Di-tert-butylbiphenylide (LiDBB). J Org Chem 2016; 81:10707-10714. [DOI: 10.1021/acs.joc.6b01748] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Richard R. Hill
- Department of Chemistry, 1102 Natural Sciences II, University of California—Irvine, Irvine, California 92697, United States
| | - Scott D. Rychnovsky
- Department of Chemistry, 1102 Natural Sciences II, University of California—Irvine, Irvine, California 92697, United States
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6
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Kennedy N, Liu P, Cohen T. Fundamental Difference in Reductive Lithiations with Preformed Radical Anions versus Catalytic Aromatic Electron-Transfer Agents: N, N-Dimethylaniline as an Advantageous Catalyst. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201508971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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7
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Kennedy N, Liu P, Cohen T. Fundamental Difference in Reductive Lithiations with Preformed Radical Anions versus Catalytic Aromatic Electron-Transfer Agents: N
,N-
Dimethylaniline as an Advantageous Catalyst. Angew Chem Int Ed Engl 2015; 55:383-6. [DOI: 10.1002/anie.201508971] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Indexed: 11/06/2022]
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8
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Kennedy N, Lu G, Liu P, Cohen T. Reductive Lithiation in the Absence of Aromatic Electron Carriers. A Steric Effect Manifested on the Surface of Lithium Metal Leads to a Difference in Relative Reactivity Depending on Whether the Aromatic Electron Carrier Is Present or Absent. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b01136] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicole Kennedy
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Gang Lu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Theodore Cohen
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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9
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Azzena U, Kondrot F, Pisano L, Pittalis M. A green solvent approach to the chemistry of 1,2-diaryl-1,2-disodioethanes. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2834] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ugo Azzena
- Dipartimento di Chimica; Università di Sassari; via Vienna 2; I-07100-Sassari; Italy
| | - Florian Kondrot
- Dipartimento di Chimica; Università di Sassari; via Vienna 2; I-07100-Sassari; Italy
| | - Luisa Pisano
- Dipartimento di Chimica; Università di Sassari; via Vienna 2; I-07100-Sassari; Italy
| | - Mario Pittalis
- Dipartimento di Chimica; Università di Sassari; via Vienna 2; I-07100-Sassari; Italy
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10
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Biggs-Houck JE, Davis RL, Wei J, Mercado BQ, Olmstead MM, Tantillo DJ, Shaw JT. Carbon–Carbon Bond-Forming Reactions of α-Thioaryl Carbonyl Compounds for the Synthesis of Complex Heterocyclic Molecules. J Org Chem 2011; 77:160-72. [DOI: 10.1021/jo201541e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- James E. Biggs-Houck
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Rebecca L. Davis
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Jingqiang Wei
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Brandon Q. Mercado
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Marilyn M. Olmstead
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Dean J. Tantillo
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Jared T. Shaw
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
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11
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Hitchcock PB, Lappert MF, Protchenko AV. Synthesis and structure of the silylated benzene radical anion salts [K([18]crown-6){C6H4(SiMe3)2-1,4}] and [K([18]crown-6)(THF)2][C6H2(SiMe3)4-1,2,4,5]. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.11.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Bodineau N, Mattalia JM, Hazimeh H, Handoo KL, Timokhin V, Négrel JC, Chanon M. About the Inhibition of Grignard Reagent Formation byp-Dinitrobenzene: Comparing the Mechanism of Grignard Reagent Formation and the SRN1 Mechanism. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901469] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Ivanov R, Marek I, Cohen T. The superiority of properly prepared lithium 1-N,N-dimethylaminonaphthalenide (LDMAN) over other aromatic radical-anions for the generation of organolithiums by reductive lithiation. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.10.121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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In situ generated tris(p-bromophenyl)amine radical cation promoted electron transfer reaction of cyclopropyl silyl ethers. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.108] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Donohoe TJ, Kershaw NM, Baron R, Compton RG. The effect of ortho-substitution on the efficacy of biphenyls in mediating electron transfer from lithium. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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17
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Wood NCL, Paddon CA, Bhatti FL, Donohoe TJ, Compton RG. Mediated electron transfer from lithium investigated voltammetrically in tetrahydrofuran: why are some mediators more effective reducing reagents than others? J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1232] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Paddon CA, Jones SEW, Bhatti FL, Donohoe TJ, Compton RG. Kinetics and thermodynamics of the Li/Li+ couple in tetrahydrofuran at low temperatures (195–295 K). J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1230] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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