1
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Ji CB. Advances and Strategies towards Synthesis of Aspidosperma Indole Alkaloids Goniomitine. Chem Biodivers 2024; 21:e202400416. [PMID: 38587971 DOI: 10.1002/cbdv.202400416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/31/2024] [Accepted: 04/04/2024] [Indexed: 04/10/2024]
Abstract
Goniomitine is of the aspidosperma alkaloid family, with an angularly fused tetracyclic skeleton housing an all-carbon quaternary carbon chiral center alongside an aminal functional group. This natural product has garnered attention as a synthetic target due to its intriguing molecular architecture and anti-proliferative activity in recent years. Following the first synthesis of (-)-goniomitine by Takano in 1991, synthetic chemists have developed various methods. This review provides an overview of the methodologies used in the synthesis of goniomitine in racemic and enantiopure forms via divergent construction indole framework, indole functionalization, and the integrated oxidation/reduction/cyclization (iORC) sequence from 1991 to 2023.
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Affiliation(s)
- Cong-Bin Ji
- School of Chemistry and Environmental Sciences, Shangrao Normal University, 334001, Shangrao, P. R. China
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2
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Long J, Liu R, Mu X, Song Z, Zhang Z, Yang Z. Development of a Strategy for the Total Synthesis of Aspidosperma Alkaloids via the Cyclobutenone-Based PET-Initiated Cationic Radical-Driven [2+2]/Retro-Mannich Reaction. Org Lett 2024; 26:2960-2964. [PMID: 38592965 DOI: 10.1021/acs.orglett.4c00540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
A novel strategy for the synthesis of Aspidosperma alkaloids has been achieved via a photoredox-initiated [2+2]/retro-Mannich reaction of tryptamine-substituted enaminones as a key step. The developed chemistry has been applied to the construction of the core tetracycle of Aspidosperma alkaloids (±)-aspidospermidine and (±)-limaspermidine.
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Affiliation(s)
- Jianyu Long
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Rudong Liu
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Xinpeng Mu
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhilin Song
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhongchao Zhang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518132, China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS) and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
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3
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Hicks EF, Inoue K, Stoltz BM. Enantioselective Total Synthesis of (-)-Hunterine A Enabled by a Desymmetrization/Rearrangement Strategy. J Am Chem Soc 2024; 146:4340-4345. [PMID: 38346145 PMCID: PMC10885145 DOI: 10.1021/jacs.3c13590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The first enantioselective total synthesis of (-)-hunterine A is disclosed. Our strategy employs a catalytic asymmetric desymmetrization of a symmetrical diketone and subsequent Beckmann rearrangement to construct a 5,6-α-aminoketone. A convergent 1,2-addition joins a vinyl dianion nucleophile and the enantioenriched ketone. The endgame of the synthesis features an aza-Cope/Mannich reaction and azide-olefin dipolar cycloaddition to complete the pentacyclic ring system. The synthesis is completed through a regioselective aziridine ring opening.
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Affiliation(s)
- Elliot F Hicks
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Kengo Inoue
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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4
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Richard F, Clark P, Hannam A, Keenan T, Jean A, Arseniyadis S. Pd-Catalysed asymmetric allylic alkylation of heterocycles: a user's guide. Chem Soc Rev 2024; 53:1936-1983. [PMID: 38206332 DOI: 10.1039/d3cs00856h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
This review provides an in-depth analysis of recent advances and strategies employed in the Pd-catalysed asymmetric allylic alkylation (Pd-AAA) of nucleophilic prochiral heterocycles. The review is divided into sections each focused on a specific family of heterocycle, where optimisation data and reaction scope have been carefully analysed in order to bring forward specific reactivity and selectivity trends. The review eventually opens on how computer-based technologies could be used to predict an ideally matched catalytic system for any given substrate. This user-guide targets chemists from all horizons interested in running a Pd-AAA reaction for the preparation of highly enantioenriched heterocyclic compounds.
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Affiliation(s)
- François Richard
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Paul Clark
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Al Hannam
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Thomas Keenan
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
| | - Alexandre Jean
- Industrial Research Centre, Oril Industrie, 13 rue Desgenétais, 76210, Bolbec, France
| | - Stellios Arseniyadis
- Queen Mary University of London, Department of Chemistry, Mile End Road, E1 4NS, London, UK.
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5
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Yang C, Shi W, Tian J, Guo L, Zhao Y, Xia W. Visible-light-induced radical cascade cyclization: a catalyst-free synthetic approach to trifluoromethylated heterocycles. Beilstein J Org Chem 2024; 20:118-124. [PMID: 38264451 PMCID: PMC10804559 DOI: 10.3762/bjoc.20.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/10/2024] [Indexed: 01/25/2024] Open
Abstract
A visible-light-promoted research protocol for constructing dihydropyrido[1,2-a]indolone skeletons is herein described proceeding through a cascade cyclization mediated by trifluoromethyl radicals. This method allows the efficient synthesis of various indole derivatives without the need of photocatalysts or transition-metal catalysts. Mechanism experiments indicate that the process involves a radical chain process initiated by the homolysis of Umemoto's reagent. This straightforward method enables a rapid access to heterocycles containing a trifluoromethyl group.
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Affiliation(s)
- Chuan Yang
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Wei Shi
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Jian Tian
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Lin Guo
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Yating Zhao
- College of Chemical and Material Engineering, Quzhou University, Quzhou 324000, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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6
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Rand AW, Gonzalez KJ, Reimann CE, Virgil SC, Stoltz BM. Total Synthesis of Strempeliopidine and Non-Natural Stereoisomers through a Convergent Petasis Borono-Mannich Reaction. J Am Chem Soc 2023; 145:7278-7287. [PMID: 36952571 PMCID: PMC10281614 DOI: 10.1021/jacs.2c13146] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
Strempeliopidine is a member of the monoterpenoid bisindole alkaloid family, a class of natural products that have been shown to elicit an array of biological responses including modulating protein-protein interactions in human cancer cells. Our synthesis of strempeliopidine leverages palladium-catalyzed decarboxylative asymmetric allylic alkylations to install the requisite all-carbon quaternary centers found in each of the two monomeric natural products, aspidospermidine and eburnamine. Initial studies employing Suzuki-Miyaura cross-coupling followed by diastereoselective hydrogenation provided evidence for a structural reassignment of the natural product. Our final synthetic sequence employs a diastereoselective Petasis borono-Mannich reaction to couple eburnamine to a trifluoroborate aspidospermidine derivative. These convergent approaches enabled the synthesis of eight diastereomers of this heterodimer and offer support for the reassignment of the absolute configuration of strempeliopidine.
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Affiliation(s)
- Alexander W Rand
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Kevin J Gonzalez
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Christopher E Reimann
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Scott C Virgil
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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7
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Cain D, Anderson NA, Cordes DB, Slawin AMZ, Watson AJB. Total Synthesis of (±)-Aspidospermidine, (±)-Aspidofractinine, (±)-Limaspermidine, and (±)-Vincadifformine via a Cascade and Common Intermediate Strategy. J Org Chem 2022; 87:15559-15563. [PMID: 36259765 PMCID: PMC9680024 DOI: 10.1021/acs.joc.2c02099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A concise strategy for the total synthesis of several Aspidosperma alkaloids is reported. A Suzuki-Miyaura cross-coupling provides access to a 2-vinyl indole that undergoes a Diels-Alder cascade reaction with butyn-2-one to deliver a pyrroloindoline intermediate. This undergoes cascade amidation, reduction, skeletal rearrangement, and intramolecular Michael addition to provide a common intermediate containing the full framework of the Aspidosperma alkaloids. The utility of this intermediate is shown in the synthesis of four different natural products.
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Affiliation(s)
- David
L. Cain
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.
| | - Niall A. Anderson
- GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, StevenageSG1 2NY, U.K.
| | - David B. Cordes
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.
| | - Alexandra M. Z. Slawin
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.
| | - Allan J. B. Watson
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, Fife, St AndrewsKY16 9ST, U.K.,
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8
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Li Y, Paola E, Wang Z, Menard G, Zakarian A. Lithium Enolate with a Lithium-Alkyne Interaction in the Enantioselective Construction of Quaternary Carbon Centers: Concise Synthesis of (+)-Goniomitine. Angew Chem Int Ed Engl 2022; 61:e202209987. [PMID: 36251869 PMCID: PMC9798608 DOI: 10.1002/anie.202209987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Indexed: 11/09/2022]
Abstract
We report a method for direct enantioselective alkylation of 3-alkynoic and 2,3-alkendioic acids that form quaternary stereogenic centers, and application of this method to the total enantioselective synthesis of a complex alkaloid (+)-goniomitine. The methods were effective in the alkylation of both 3-alkynoic acids, 2,3-alkendioic acids substrates with a broad range of heterocyclic and functionalized alkyl group substituents. Accompanying crystallographic studies provide mechanistic insight into the structure of well-defined chiral aggregates, highlighting cation-π interactions between lithium and alkyne groups.
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Affiliation(s)
- Yang Li
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Elena Paola
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Zongheng Wang
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Gabriel Menard
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Armen Zakarian
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
- Center for Integrative Biology, Faculty of Sciences, Geroscience Center for Brain Health and Metabolism, Universidad Mayor, Santiago, Chile
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9
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Li Y, Paola E, Wang Z, Menard G, Zakarian A. Lithium Enolate with a Lithium‐Alkyne Interaction in the Enantioselective Construction of Quaternary Carbon Centers: Concise Synthesis of (+)‐Goniomitine. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yang Li
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Elena Paola
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Zongheng Wang
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Gabriel Menard
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Armen Zakarian
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
- Center for Integrative Biology Faculty of Sciences Geroscience Center for Brain Health and Metabolism Universidad Mayor Santiago Chile
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10
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Wang N, Xiao X, Liu CX, Yao H, Huang N, Zou K. Recent Advances in the Total Synthesis of <i>Aspidosperma</i> and <i>Kopsia</i> Alkaloids Using Tetracyclic Pyridocarbazoles as Versatile Building Blocks. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Xiao Xiao
- Zhejiang University of Technology CHINA
| | | | - Hui Yao
- China Three Gorges University CHINA
| | | | - Kun Zou
- China Three Gorges University CHINA
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11
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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12
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Wang X, Yuan L, Xu X, Ji S. Base-controlled annulation of tryptamine-derived isocyanides with nitrile imines for access to polycyclic spiroindoline derivatives. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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13
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Cai L, Zhang H, Wang K, Zhao H. Pd‐Catalyzed Decarboxylative Coupling Between Allyl Carbonates and Vinyl Benzoxazinanones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lu‐Yu Cai
- College of Life Science and Bio-engineering Beijing University of Technology Beijing 100124 People's Republic of China
| | - Heng Zhang
- College of Life Science and Bio-engineering Beijing University of Technology Beijing 100124 People's Republic of China
| | - Kuo Wang
- College of Life Science and Bio-engineering Beijing University of Technology Beijing 100124 People's Republic of China
| | - Hong‐Wu Zhao
- College of Life Science and Bio-engineering Beijing University of Technology Beijing 100124 People's Republic of China
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14
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Li Y, Chen P, Chen ZC, Du W, Chen YC. Cooperative Tertiary Phosphine/Palladium Catalyzed Nucleophilic Allylation between Morita‐Baylis‐Hillman Carbonates and Alkenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200218] [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)
- Yue Li
- Sichuan University West China School of Pharmacy CHINA
| | - Peng Chen
- Sichuan University West China School of Pharmacy CHINA
| | - Zhi-Chao Chen
- Sichuan University West China School of Pharmacy CHINA
| | - Wei Du
- Sichuan University West China School of Pharmacy CHINA
| | - Ying-Chun Chen
- Sichuan University West China School of Pharmacy No. 17, Section 3, Renmin South Road 610041 Chengdu CHINA
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15
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Evolution in heterodonor P-N, P-S and P-O chiral ligands for preparing efficient catalysts for asymmetric catalysis. From design to applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214120] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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16
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Zhao S, Sirasani G, Andrade RB. Aspidosperma and Strychnos alkaloids: Chemistry and biology. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2021; 86:1-143. [PMID: 34565505 DOI: 10.1016/bs.alkal.2021.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Of Nature's nearly 3000 unique monoterpene indole alkaloids derived from tryptophan, those members belonging to the Aspidosperma and Strychnos families continue to impact the fields of natural products (i.e., isolation, structure determination, biosynthesis) and organic chemistry (i.e., chemical synthesis, methodology development) among others. This review covers the biological activity (Section 2), biosynthesis (Section 3), and synthesis of both classical and novel Aspidosperma (Section 4), Strychnos (Section 5), and selected bis-indole (Section 6) alkaloids. Technological advancements in genetic sequencing and bioinformatics have deepened our understanding of how Nature assembles these intriguing molecules. The proliferation of innovative synthetic strategies and tactics for the synthesis of the alkaloids covered in this review, which include contributions from over fifty research groups from around the world, are a testament to the creative power and technical skills of synthetic organic chemists. To be sure, Nature-the Supreme molecular architect and source of a dazzling array of irresistible chemical logic puzzles-continues to inspire scientists across multiple disciplines and will certainly continue to do so for the foreseeable future.
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Affiliation(s)
- Senzhi Zhao
- Department of Chemistry, Temple University, Philadelphia, PA, United States
| | | | - Rodrigo B Andrade
- Department of Chemistry, Temple University, Philadelphia, PA, United States
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17
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Reimann CE, Ngamnithiporn A, Hayashida K, Saito D, Korch KM, Stoltz BM. The Enantioselective Synthesis of Eburnamonine, Eucophylline, and 16′‐
epi
‐Leucophyllidine. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106184] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christopher E. Reimann
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Aurapat Ngamnithiporn
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
- Laboratory of Medicinal Chemistry Chulabhorn Research Institute 54 Kamphaeng Phet 6 Road Bangkok 10210 Thailand
| | - Kohei Hayashida
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
- Discovery Research Laboratories Nippon Chemiphar Co., Ltd. 1–22 Hikokawado Misato Saitama 341-005 Japan
| | - Daisuke Saito
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
- Discovery Research Laboratories Nippon Chemiphar Co., Ltd. 1–22 Hikokawado Misato Saitama 341-005 Japan
| | - Katerina M. Korch
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
| | - Brian M. Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering 1200 E. California Blvd, MC 101-20 Pasadena CA 91125 USA
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18
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Reimann CE, Ngamnithiporn A, Hayashida K, Saito D, Korch KM, Stoltz BM. The Enantioselective Synthesis of Eburnamonine, Eucophylline, and 16'-epi-Leucophyllidine. Angew Chem Int Ed Engl 2021; 60:17957-17962. [PMID: 34036708 PMCID: PMC8338904 DOI: 10.1002/anie.202106184] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Indexed: 11/08/2022]
Abstract
A synthetic approach to the heterodimeric bisindole alkaloid leucophyllidine is disclosed herein. An enantioenriched lactam building block, synthesized through palladium-catalyzed asymmetric allylic alkylation, served as the precursor to both hemispheres. The eburnamonine-derived fragment was synthesized through a Bischler-Napieralski/hydrogenation approach, while the eucophylline-derived fragment was synthesized by Friedländer quinoline synthesis and two sequential C-H functionalization steps. A convergent Stille coupling and phenol-directed hydrogenation united the two monomeric fragments to afford 16'-epi-leucophyllidine in 21 steps from commercial material.
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Affiliation(s)
- Christopher E. Reimann
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
| | - Aurapat Ngamnithiporn
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Bangkok, 10210, Thailand
| | - Kohei Hayashida
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
- Discovery Research Laboratories, Nippon Chemiphar Co., Ltd. 1-22 Hikokawado, Misato, Saitama 341-005, Japan
| | - Daisuke Saito
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
- Discovery Research Laboratories, Nippon Chemiphar Co., Ltd. 1-22 Hikokawado, Misato, Saitama 341-005, Japan
| | - Katerina M. Korch
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
| | - Brian M. Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd. MC 101-20, Pasadena, CA 91125 (USA)
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19
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Zong Y, Xu Z, Zhu R, Su A, Liu X, Zhu M, Han J, Zhang J, Xu Y, Lou H. Enantioselective Total Syntheses of Manginoids A and C and Guignardones A and C. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yan Zong
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Ze‐Jun Xu
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Rong‐Xiu Zhu
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China
| | - Ai‐Hong Su
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Xu‐Yuan Liu
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Ming‐Zhu Zhu
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Jing‐Jing Han
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Jiao‐Zhen Zhang
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Yu‐Liang Xu
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
| | - Hong‐Xiang Lou
- Department of Natural Products Chemistry Key Lab of Chemical Biology School of Pharmaceutical Sciences Shandong University Jinan 250012 China
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20
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Zong Y, Xu ZJ, Zhu RX, Su AH, Liu XY, Zhu MZ, Han JJ, Zhang JZ, Xu YL, Lou HX. Enantioselective Total Syntheses of Manginoids A and C and Guignardones A and C. Angew Chem Int Ed Engl 2021; 60:15286-15290. [PMID: 33876516 DOI: 10.1002/anie.202104182] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/19/2021] [Indexed: 12/23/2022]
Abstract
An enantioselective synthetic approach for preparing manginoids and guignardones, two types of biogenetically related meroterpenoids, is reported. This bioinspired and divergent synthesis employs an oxidative 1,3-dicarbonyl radical-initiated cyclization and cyclodehydration of the common precursor to forge the central ring of the manginoids and guignardones, respectively, at a late stage. Key synthetic steps include silica-gel-promoted semipinacol rearrangement to form the 6-oxabicyclo[3.2.1]octane skeleton and the Suzuki-Miyaura reaction of vinyl bromide to achieve fragment coupling. This synthesis protocol enables the asymmetric syntheses of four fungal meroterpenoids from commercially available materials.
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Affiliation(s)
- Yan Zong
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Ze-Jun Xu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Rong-Xiu Zhu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China.,School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Ai-Hong Su
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Xu-Yuan Liu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Ming-Zhu Zhu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Jing-Jing Han
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Jiao-Zhen Zhang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Yu-Liang Xu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
| | - Hong-Xiang Lou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250012, China
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21
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Connon R, Roche B, Rokade BV, Guiry PJ. Further Developments and Applications of Oxazoline-Containing Ligands in Asymmetric Catalysis. Chem Rev 2021; 121:6373-6521. [PMID: 34019404 PMCID: PMC8277118 DOI: 10.1021/acs.chemrev.0c00844] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Indexed: 12/27/2022]
Abstract
The chiral oxazoline motif is present in many ligands that have been extensively applied in a series of important metal-catalyzed enantioselective reactions. This Review aims to provide a comprehensive overview of the most significant applications of oxazoline-containing ligands reported in the literature starting from 2009 until the end of 2018. The ligands are classified not by the reaction to which their metal complexes have been applied but by the nature of the denticity, chirality, and donor atoms involved. As a result, the continued development of ligand architectural design from mono(oxazolines), to bis(oxazolines), to tris(oxazolines) and tetra(oxazolines) and variations thereof can be more easily monitored by the reader. In addition, the key transition states of selected asymmetric transformations will be given to illustrate the features that give rise to high levels of asymmetric induction. As a further aid to the reader, we summarize the majority of schemes with representative examples that highlight the variation in % yields and % ees for carefully selected substrates. This Review should be of particular interest to the experts in the field but also serve as a useful starting point to new researchers in this area. It is hoped that this Review will stimulate both the development/design of new ligands and their applications in novel metal-catalyzed asymmetric transformations.
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Affiliation(s)
- Robert Connon
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Brendan Roche
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Balaji V. Rokade
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
| | - Patrick J. Guiry
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
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22
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Pàmies O, Margalef J, Cañellas S, James J, Judge E, Guiry PJ, Moberg C, Bäckvall JE, Pfaltz A, Pericàs MA, Diéguez M. Recent Advances in Enantioselective Pd-Catalyzed Allylic Substitution: From Design to Applications. Chem Rev 2021; 121:4373-4505. [PMID: 33739109 PMCID: PMC8576828 DOI: 10.1021/acs.chemrev.0c00736] [Citation(s) in RCA: 201] [Impact Index Per Article: 67.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Indexed: 12/30/2022]
Abstract
This Review compiles the evolution, mechanistic understanding, and more recent advances in enantioselective Pd-catalyzed allylic substitution and decarboxylative and oxidative allylic substitutions. For each reaction, the catalytic data, as well as examples of their application to the synthesis of more complex molecules, are collected. Sections in which we discuss key mechanistic aspects for high selectivity and a comparison with other metals (with advantages and disadvantages) are also included. For Pd-catalyzed asymmetric allylic substitution, the catalytic data are grouped according to the type of nucleophile employed. Because of the prominent position of the use of stabilized carbon nucleophiles and heteronucleophiles, many chiral ligands have been developed. To better compare the results, they are presented grouped by ligand types. Pd-catalyzed asymmetric decarboxylative reactions are mainly promoted by PHOX or Trost ligands, which justifies organizing this section in chronological order. For asymmetric oxidative allylic substitution the results are grouped according to the type of nucleophile used.
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Affiliation(s)
- Oscar Pàmies
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Jèssica Margalef
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Santiago Cañellas
- Discovery
Sciences, Janssen Research and Development, Janssen-Cilag, S.A. Jarama 75A, 45007, Toledo, Spain
| | - Jinju James
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Eric Judge
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Christina Moberg
- KTH
Royal Institute of Technology, Department of Chemistry, Organic Chemistry, SE 100 44 Stockholm, Sweden
| | - Jan-E. Bäckvall
- Department
of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE 106 91 Stockholm, Sweden
| | - Andreas Pfaltz
- Department
of Chemistry, University of Basel. St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Miquel A. Pericàs
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Inorgànica i Orgànica, Universitat de Barcelona. 08028 Barcelona, Spain
| | - Montserrat Diéguez
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
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23
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Katahara S, Sugiyama Y, Yamane M, Komiya Y, Sato T, Chida N. Five-Step Total Synthesis of (±)-Aspidospermidine by a Lactam Strategy via an Azomethine Ylide. Org Lett 2021; 23:3058-3063. [DOI: 10.1021/acs.orglett.1c00735] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Seiya Katahara
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Yasukazu Sugiyama
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Mina Yamane
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Yukinori Komiya
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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24
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Zhu B, Zhu L, Xia J, Huang S, Huang X. Gold-catalyzed cycloisomerization of enynamides: Regio- and stereoselective approach to tetracyclic spiroindolines. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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25
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26
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Martin G, Angyal P, Egyed O, Varga S, Soós T. Total Syntheses of Dihydroindole Aspidosperma Alkaloids: Reductive Interrupted Fischer Indolization Followed by Redox Diversification. Org Lett 2020; 22:4675-4679. [PMID: 32497431 PMCID: PMC7467818 DOI: 10.1021/acs.orglett.0c01472] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Indexed: 01/22/2023]
Abstract
We report a novel reductive interrupted Fischer indolization process for the concise assembly of the 20-oxoaspidospermidine framework. This rapid complexity generating route paves the way toward various dihydroindole Aspidosperma alkaloids with different C-5 side chain redox patterns. The end-game redox modulations were accomplished by modified Wolff-Kishner reaction and photo-Wolff rearrangement, enabling the total synthesis of (-)-aspidospermidine, (-)-limaspermidine, and (+)-17-demethoxy-N-acetylcylindrocarine and the formal total synthesis of (-)-1-acetylaspidoalbidine.
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Affiliation(s)
- Gábor Martin
- Institute
of Organic Chemistry, Research Centre for
Natural Sciences, 2 Magyar tudósok krt., Budapest, H-1117, Hungary
| | - Péter Angyal
- Institute
of Organic Chemistry, Research Centre for
Natural Sciences, 2 Magyar tudósok krt., Budapest, H-1117, Hungary
| | - Orsolya Egyed
- Instrumentation
Center, Research Centre for Natural Sciences, 2 Magyar tudósok krt., Budapest, H-1117, Hungary
| | - Szilárd Varga
- Institute
of Organic Chemistry, Research Centre for
Natural Sciences, 2 Magyar tudósok krt., Budapest, H-1117, Hungary
| | - Tibor Soós
- Institute
of Organic Chemistry, Research Centre for
Natural Sciences, 2 Magyar tudósok krt., Budapest, H-1117, Hungary
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27
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Varga S, Angyal P, Martin G, Egyed O, Holczbauer T, Soós T. Total Syntheses of (−)‐Minovincine and (−)‐Aspidofractinine through a Sequence of Cascade Reactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004769] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Szilárd Varga
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Péter Angyal
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Gábor Martin
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Orsolya Egyed
- Instrumentation Center Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
- Instrumentation Center Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
| | - Tibor Soós
- Institute of Organic Chemistry Research Centre for Natural Sciences 2 Magyar tudósok krt. 1117 Budapest Hungary
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28
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Varga S, Angyal P, Martin G, Egyed O, Holczbauer T, Soós T. Total Syntheses of (-)-Minovincine and (-)-Aspidofractinine through a Sequence of Cascade Reactions. Angew Chem Int Ed Engl 2020; 59:13547-13551. [PMID: 32351014 PMCID: PMC7497198 DOI: 10.1002/anie.202004769] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/27/2020] [Indexed: 12/31/2022]
Abstract
We report 8‐step syntheses of (−)‐minovincine and (−)‐aspidofractinine using easily available and inexpensive reagents and catalyst. A key element of the strategy was the utilization of a sequence of cascade reactions to rapidly construct the penta‐ and hexacyclic frameworks. These cascade transformations included organocatalytic Michael‐aldol condensation, a multistep anionic Michael‐SN2 cascade reaction, and Mannich reaction interrupted Fischer indolization. To streamline the synthetic routes, we also investigated the deliberate use of steric effect to secure various chemo‐ and regioselective transformations.
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Affiliation(s)
- Szilárd Varga
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Péter Angyal
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Gábor Martin
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Orsolya Egyed
- Instrumentation Center, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary.,Instrumentation Center, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
| | - Tibor Soós
- Institute of Organic Chemistry, Research Centre for Natural Sciences, 2 Magyar tudósok krt., 1117, Budapest, Hungary
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29
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Abstract
In this work, a photocatalytic strategy for a rapid and modular access to polycyclic indolones starting from readily available indoles is reported. This strategy relies on the use of redox-active esters in combination with an iridium-based photocatalyst under visible-light irradiation. The generation of alkyl radicals through decarboxylative single electron reductions enables intramolecular homolytic aromatic substitutions with a pending indole moiety to afford pyrrolo- and pyridoindolone derivatives under mild conditions. Furthermore, it was demonstrated that these radicals could also be engaged into cascades consisting of an intermolecular Giese-type addition followed by an intramolecular homolytic aromatic substitution to rapidly assemble valuable azepinoindolones.
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Affiliation(s)
- Tanguy Saget
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301Université Paris-Sud, Université Paris-Saclay1, av. de la Terrasse91198Gif-sur-YvetteFrance
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 31RegensburgGermany
| | - Burkhard König
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 31RegensburgGermany
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30
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Wang Z. Palladium-catalyzed asymmetric dearomative cyclization in natural product synthesis. Org Biomol Chem 2020; 18:4354-4370. [PMID: 32459269 DOI: 10.1039/d0ob00818d] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Asymmetric catalysis is a rapidly growing field in modern organic chemistry and has been indispensable for the synthesis of enantioenriched materials to meet demands from the academies to pharmaceutical industries. Asymmetric dearomative cyclization catalyzed by transition metals has been a hot research area in the last decade. Fascinated by its ability to construct sterically hindered quaternary stereogenic center(s) through dearomatization and simultaneously forging new ring structure(s) through cyclization, palladium-catalyzed asymmetric dearomative cyclization has been applied to the synthesis of structurally complicated natural products and it is increasingly prevalent in the literature. In particular, the resultant product from dearomative cyclization, which usually carries one or more unsaturated C-C bond(s), allows further functional group transformations. Previously reported applications of palladium-catalyzed asymmetric dearomative cyclization in natural product synthesis are presented here and discussed in depth.
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Affiliation(s)
- Zhuo Wang
- Southern University of Science and Technology, School of Medicine, Shenzhen, 518055, People's Republic of China.
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31
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Usman M, Hu X, Liu W. Recent Advances and Perspectives in the Synthesis and Applications of Tetrahydrocarbazol‐4‐ones†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Muhammad Usman
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education); College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 China
| | - Xu‐Dong Hu
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education); College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 China
| | - Wen‐Bo Liu
- Sauvage Center for Molecular Sciences; Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education); College of Chemistry and Molecular Sciences, Wuhan University Wuhan Hubei 430072 China
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32
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Cholewczynski AE, Williams PC, Pierce JG. Stereocontrolled Synthesis of (±)-Melokhanine E via an Intramolecular Formal [3 + 2] Cycloaddition. Org Lett 2020; 22:714-717. [PMID: 31908171 PMCID: PMC7662073 DOI: 10.1021/acs.orglett.9b04546] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A convergent sequence to access the indole alkaloid (±)-melokhanine E in 12-steps (8-step longest linear sequence) and an 11% overall yield is reported. The approach utilizes two cyclopropane moieties as reactive precursors to a 1,3-dipole and imine species to enable stereoselective construction of the core scaffold through a formal [3 + 2] cycloaddition. The natural product was evaluated for its antimicrobial activity based on isolation reports; however, no activity was observed. The reported efforts serve as a synthetic platform to prepare an array of alkaloids bearing this core structural motif.
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Affiliation(s)
- Anna E Cholewczynski
- Department of Chemistry, College of Sciences , NC State University , Raleigh , North Carolina 27695 , United States
| | - Peyton C Williams
- Department of Chemistry, College of Sciences , NC State University , Raleigh , North Carolina 27695 , United States
| | - Joshua G Pierce
- Department of Chemistry, College of Sciences , NC State University , Raleigh , North Carolina 27695 , United States
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33
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Ma S, Long D, Chen P, Shi H, Li H, Fang R, Wang X, Xie X, She X. Synthesis of 2,3-disubstituted indoles via a tandem reaction. Org Chem Front 2020. [DOI: 10.1039/d0qo00765j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A wide array of 2,3-disubstituted indoles were accessed in modest to good yields via a tandem reduction/condensation/fragmentation/cyclization sequence. Differential fragmentation made the reaction more complicated.
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Affiliation(s)
- Shiqiang Ma
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Dan Long
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Peiqi Chen
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Hongliang Shi
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Huilin Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiaolei Wang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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34
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Masson-Makdissi J, Jang YJ, Prieto L, Taylor MS, Lautens M. Rhodium-Catalyzed Tandem Isomerization–Allylation: From Diallyl Carbonates to α-Quaternary Aldehydes. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04128] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeanne Masson-Makdissi
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Young Jin Jang
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Liher Prieto
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
- Department of Organic Chemistry II, University of the Basque Country (UPV/EHU), P.O. Box 644, 48080 Bilbao, Spain
| | - Mark S. Taylor
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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35
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Affiliation(s)
- Eunjoon Park
- Department of ChemistryKorea University 145 Anam-ro, Seongbuk-gu Seoul 02841 Republic of Korea
| | - Cheol‐Hong Cheon
- Department of ChemistryKorea University 145 Anam-ro, Seongbuk-gu Seoul 02841 Republic of Korea
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36
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Affiliation(s)
- Hongjin Xu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - He Huang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Cui Zhao
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Chuanjun Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Xinxiang 453007, China
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37
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Imrich MR, Maichle-Mössmer C, Ziegler T. d
-Fructose Based Spiro-Fused PHOX Ligands: Palladium Complexes and Application in Catalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900490] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michael R. Imrich
- Institute of Organic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | | | - Thomas Ziegler
- Institute of Organic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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38
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Li W, Dong Z, Zhang Y, Zeng Z, Usman M, Liu WB. Cu-Catalyzed Arylation/Acyl Migration Cascade Reaction of Enaminones: Access to N-Fused Polycyclic and 2,3-Disubstituted Indoles. J Org Chem 2019; 84:7995-8005. [DOI: 10.1021/acs.joc.9b00866] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Weishuang Li
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Zhan Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Yan Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Zhen Zeng
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Muhammad Usman
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
| | - Wen-Bo Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, Hubei, China
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39
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Alexy EJ, Fulton TJ, Zhang H, Stoltz BM. Palladium-catalyzed enantioselective decarboxylative allylic alkylation of fully substituted N-acyl indole-derived enol carbonates. Chem Sci 2019; 10:5996-6000. [PMID: 31360407 PMCID: PMC6566452 DOI: 10.1039/c9sc01726g] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 04/26/2019] [Indexed: 01/06/2023] Open
Abstract
The first enantioselective Pd-catalyzed decarboxylative allylic alkylation of fully substituted N-acyl indole-derived enol carbonates generates acyclic all-carbon quaternary stereocenters in excellent yields (up to 99%) and enantioselectivities (up to 98% ee) using a new electron-deficient phosphinoxazoline (PHOX) ligand.
The first enantioselective palladium-catalyzed decarboxylative allylic alkylation of fully substituted N-acyl indole-derived enol carbonates forming acyclic all-carbon quaternary stereocenters is reported. Excellent yields up to 99% and enantioselectivities up to 98% ee are obtained through the use of a new electron-deficient phosphinoxazoline (PHOX) ligand. Control of substrate enolate geometry is crucial for high selectivity. The obtained α-quaternary N-acyl indoles are formal ester equivalents, and represent a useful handle for further synthetic transformations.
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Affiliation(s)
- Eric J Alexy
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , CA 91125 , USA .
| | - Tyler J Fulton
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , CA 91125 , USA .
| | - Haiming Zhang
- Small Molecule Process Chemistry, Genentech, Inc. , 1 DNA Way , South San Francisco , CA 94080 , USA .
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , CA 91125 , USA .
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40
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Pritchett BP, Stoltz BM. Enantioselective palladium-catalyzed allylic alkylation reactions in the synthesis of Aspidosperma and structurally related monoterpene indole alkaloids. Nat Prod Rep 2019; 35:559-574. [PMID: 29658039 DOI: 10.1039/c7np00069c] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: up to the end of 2017 Enantioselective Pd-catalyzed allylic alkylations of prochiral enolates represent a powerful tool for the construction of all-carbon quaternary stereocenters. This review describes the emergence of such reactions as strategic linchpins that enable efficient, stereocontrolled syntheses of Aspidosperma and related monoterpene indole alkaloids.
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Affiliation(s)
- Beau P Pritchett
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125, USA.
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41
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Dong Z, Zhang XW, Li W, Li ZM, Wang WY, Zhang Y, Liu W, Liu WB. Synthesis of N-Fused Polycyclic Indoles via Ligand-Free Palladium-Catalyzed Annulation/Acyl Migration Reaction. Org Lett 2019; 21:1082-1086. [DOI: 10.1021/acs.orglett.8b04128] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhan Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xiao-Wen Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Weishuang Li
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Zi-Meng Li
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Wen-Yan Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Yan Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Wei Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Wen-Bo Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
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42
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43
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Bin H, Wang K, Yang D, Yang X, Xie J, Zhou Q. Scalable Enantioselective Total Synthesis of (−)‐Goniomitine. Angew Chem Int Ed Engl 2019; 58:1174-1177. [DOI: 10.1002/anie.201812822] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Huai‐Yu Bin
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Ke Wang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Dan Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Xiao‐Hui Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
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44
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Palmieri A, Petrini M. Tryptophol and derivatives: natural occurrence and applications to the synthesis of bioactive compounds. Nat Prod Rep 2019; 36:490-530. [DOI: 10.1039/c8np00032h] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This report presents some fundamental aspects related to the natural occurrence and bioactivity of tryptophol as well as the synthesis of tryptophols and their utilization for the preparation of naturally occurring alkaloid metabolites embedding the indole system.
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Affiliation(s)
- Alessandro Palmieri
- School of Science and Technology
- Chemistry Division
- University of Camerino
- Italy
| | - Marino Petrini
- School of Science and Technology
- Chemistry Division
- University of Camerino
- Italy
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45
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Bin H, Wang K, Yang D, Yang X, Xie J, Zhou Q. Scalable Enantioselective Total Synthesis of (−)‐Goniomitine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812822] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Huai‐Yu Bin
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Ke Wang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Dan Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Xiao‐Hui Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
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46
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Mijangos MV, Miranda LD. A unified synthesis of topologically diverse Aspidosperma alkaloids through divergent iminium-trapping. Org Biomol Chem 2018; 16:9409-9419. [PMID: 30500039 DOI: 10.1039/c8ob02621a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aspidospermidine, vincadifformine, 1,2-dehydroaspidospermidine, goniomitine, and quebrachamine, five Aspidosperma alkaloids distributed within three structurally diverse topologies, were synthesized from a single molecular scaffold, namely indole-valerolactam 6. This common intermediate can be divergently manipulated, through the incorporation of conformational and electronic constraints that influence the chemo-selectivity of the iminium ion derived therefrom, between three different reaction paths: N(1) vs. C(3) cyclization (indole numbering) vs. over-reduction. Moreover, a catalytic carbene insertion for direct C(3)-H indole functionalization is reported for the first time in an approach to goniomitine (4), and a following tandem ester reduction/iminium generation/cyclization secured its tetracyclic system. The development of a highly diastereoselective one-pot hemi-reduction/cyclization/deprotection process to obtain a cis-pyridocarbazole directly allowed the synthesis of pentacyclic Aspidosperma alkaloids 1, 2, and 3.
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Affiliation(s)
- Marco V Mijangos
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, Mexico City04510.
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47
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Yao X, Shan X, Zu L. Divergent Coupling of 2-Carbonyl-anilines and Diazo-cyclopentanones: Asymmetric Total Synthesis of (+)-Leucomidine A. Org Lett 2018; 20:6498-6501. [DOI: 10.1021/acs.orglett.8b02823] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaotong Yao
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Xiaosong Shan
- Department of Neurosurgery, Affiliated Hospital of Hebei University, Baoding, 071000, China
| | - Liansuo Zu
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
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48
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Imrich MR, Kraft J, Maichle-Mössmer C, Ziegler T. D-Fructose-based spiro-fused PHOX ligands: synthesis and application in enantioselective allylic alkylation. Beilstein J Org Chem 2018; 14:2082-2089. [PMID: 30202461 PMCID: PMC6122323 DOI: 10.3762/bjoc.14.182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/22/2018] [Indexed: 01/19/2023] Open
Abstract
Phosphinooxazoline (PHOX) ligands are an important class of ligands in asymmetric catalysis. We synthesized ten novel D-fructose-derived spiro-fused PHOX ligands with different steric and electronic demand. The application of two of them was tested in asymmetric allylic alkylation. The ligands are prepared in two steps from readily available 1,2-O-isopropylidene protected β-D-fructopyranoses by the BF3·OEt2-promoted Ritter reaction with 2-bromobenzonitrile to construct the oxazoline moiety followed by Ullmann coupling of the resulting aryl bromides with diphenylphosphine. Both steps proceeded mostly in good to high yields (57–86% for the Ritter reaction and 35–89% for the Ullmann coupling). The Ritter reaction gave two anomers, which could be separated by column chromatography. The prepared ligands showed promising results (er of up to 84:16) in Tsuji–Trost reactions with diphenylallyl acetate as model substrate.
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Affiliation(s)
- Michael R Imrich
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Jochen Kraft
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Thomas Ziegler
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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49
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Pandey G, Mishra A, Khamrai J. Generation of all carbon quaternary stereocenters at the C-3 carbon of piperidinones and pyrrolidinones and its application in natural product total synthesis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Qin S, Liu S, Cao Y, Li J, Chong C, Liu T, Luo Y, Hu J, Jiang S, Zhou H, Yang G, Yang C. α-Alkylation of Chiral Sulfinimines for Constructing Quaternary Chiral Carbons by Introducing Removable Directing Groups. Org Lett 2018; 20:1350-1354. [PMID: 29446637 DOI: 10.1021/acs.orglett.8b00105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This study developed a facile and efficient synthetic strategy to construct quaternary chiral centers at the α-position of imines and ketones. High regioselectivity and diastereoselectivity were achieved through the synergetic effect of electron-withdrawing directing groups and N-tert-butyl sulfinamide as chiral auxiliaries. Either of them could be removed under the optimized conditions without any epimerization.
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Affiliation(s)
- Shuanglin Qin
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China.,School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Shuangwei Liu
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
| | - Yuting Cao
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
| | - Jiangnan Li
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China.,School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Chuanke Chong
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
| | - Tongtong Liu
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
| | - Yunhao Luo
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
| | - Jiyun Hu
- School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Shende Jiang
- School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, People's Republic of China
| | - Honggang Zhou
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
| | - Guang Yang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
| | - Cheng Yang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University , Tianjin 300350, People's Republic of China
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