1
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Delayre B, Piemontesi C, Wang Q, Zhu J. TiCl
3
‐Mediated Synthesis of 2,3,3‐Trisubstituted Indolenines: Total Synthesis of (+)‐1,2‐Dehydroaspidospermidine, (+)‐Condyfoline, and (−)‐Tubifoline. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bastien Delayre
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Cyril Piemontesi
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
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2
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Delayre B, Piemontesi C, Wang Q, Zhu J. TiCl
3
‐Mediated Synthesis of 2,3,3‐Trisubstituted Indolenines: Total Synthesis of (+)‐1,2‐Dehydroaspidospermidine, (+)‐Condyfoline, and (−)‐Tubifoline. Angew Chem Int Ed Engl 2020; 59:13990-13997. [DOI: 10.1002/anie.202005380] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Bastien Delayre
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Cyril Piemontesi
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
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3
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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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4
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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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5
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Saya JM, Ruijter E, Orru RVA. Total Synthesis of
Aspidosperma
and
Strychnos
Alkaloids through Indole Dearomatization. Chemistry 2019; 25:8916-8935. [DOI: 10.1002/chem.201901130] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Jordy M. Saya
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute for Molecules, Medicines & SystemsVrije Universiteit Amsterdam De Boelelaan 1108 1081 HZ Amsterdam The Netherlands
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute for Molecules, Medicines & SystemsVrije Universiteit Amsterdam De Boelelaan 1108 1081 HZ Amsterdam The Netherlands
| | - Romano V. A. Orru
- Department of Chemistry & Pharmaceutical Sciences, Amsterdam Institute for Molecules, Medicines & SystemsVrije Universiteit Amsterdam De Boelelaan 1108 1081 HZ Amsterdam The Netherlands
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6
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Trillo P, Slagbrand T, Adolfsson H. Straightforward α-Amino Nitrile Synthesis Through Mo(CO)6
-Catalyzed Reductive Functionalization of Carboxamides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807735] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Paz Trillo
- Department of Chemistry; Umeå University; KBC3, Linnaeus väg 10 90187 Sweden
| | - Tove Slagbrand
- Department of Organic Chemistry; Stockholm University; 106 91 Stockholm Sweden
| | - Hans Adolfsson
- Department of Chemistry; Umeå University; KBC3, Linnaeus väg 10 90187 Sweden
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7
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Trillo P, Slagbrand T, Adolfsson H. Straightforward α-Amino Nitrile Synthesis Through Mo(CO)6
-Catalyzed Reductive Functionalization of Carboxamides. Angew Chem Int Ed Engl 2018; 57:12347-12351. [DOI: 10.1002/anie.201807735] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Paz Trillo
- Department of Chemistry; Umeå University; KBC3, Linnaeus väg 10 90187 Sweden
| | - Tove Slagbrand
- Department of Organic Chemistry; Stockholm University; 106 91 Stockholm Sweden
| | - Hans Adolfsson
- Department of Chemistry; Umeå University; KBC3, Linnaeus väg 10 90187 Sweden
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8
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Wang Y, Lin J, Wang X, Wang G, Zhang X, Yao B, Zhao Y, Yu P, Lin B, Liu Y, Cheng M. Brønsted Acid-Catalyzed Tandem Cyclizations of Tryptamine-Ynamides Yielding 1H
-Pyrrolo[2,3-d
]carbazole Derivatives. Chemistry 2018; 24:4026-4032. [DOI: 10.1002/chem.201705189] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Yanshi Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Jingsheng Lin
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
| | - Xiaoyu Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Guanghui Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
| | - Xinhang Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
| | - Bo Yao
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Yuandong Zhao
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
| | - Pengfei Yu
- State Key Laboratory of Hollow-Fiber Membrane Materials, and Membrane Processes; School of Environmental and Chemical Engineering; Tianjin Polytechnic University; Tianjin 300387 P. R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
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9
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Huang PQ, Fan T. Intramolecular Keto Lactam Condensation: A Convenient and Straightforward Approach to Bicyclic Vinylogous Lactams. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701060] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Pei-Qiang Huang
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; 361005 Xiamen Fujian P. R. China
- State Key Laboratory of Elemento-Organic Chemistry; Nankai University; 300071 Tianjin P. R. China
| | - Ting Fan
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); College of Chemistry and Chemical Engineering; Xiamen University; 361005 Xiamen Fujian P. R. China
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10
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Li LH, Niu ZJ, Liang YM. Synthesis of Functionalized Quinolines through a Reaction of Amides and Alkynes Promoted by Triflic Anhydride/Pyridine. Chemistry 2017; 23:15300-15304. [DOI: 10.1002/chem.201703832] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Lian-Hua Li
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 P. R. China
| | - Zhi-Jie Niu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 P. R. China
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11
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Kang T, White KL, Mann TJ, Hoveyda AH, Movassaghi M. Enantioselective Total Synthesis of (-)-Deoxoapodine. Angew Chem Int Ed Engl 2017; 56:13857-13860. [PMID: 28862815 DOI: 10.1002/anie.201708088] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Indexed: 01/07/2023]
Abstract
The first enantioselective total synthesis of (-)-deoxoapodine is described. Our synthesis of this hexacyclic aspidosperma alkaloid includes an efficient molybdenum-catalyzed enantioselective ring-closing metathesis reaction for the desymmetrization of an advanced intermediate that introduces the C5-quaternary stereocenter. After C21-oxygenation, the pentacyclic core was accessed by electrophilic C19-amide activation and transannular spirocyclization. A biogenetically inspired dehydrative C6-etherification reaction proved highly effective to secure the F-ring and the fourth contiguous stereocenter of (-)-deoxoapodine with complete stereochemical control.
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Affiliation(s)
- Taek Kang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Kolby L White
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Tyler J Mann
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA
| | - Mohammad Movassaghi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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12
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Kang T, White KL, Mann TJ, Hoveyda AH, Movassaghi M. Enantioselective Total Synthesis of (−)-Deoxoapodine. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Taek Kang
- Department of Chemistry; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Kolby L. White
- Department of Chemistry; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Tyler J. Mann
- Department of Chemistry; Merkert Chemistry Center; Boston College; Chestnut Hill MA 02467 USA
| | - Amir H. Hoveyda
- Department of Chemistry; Merkert Chemistry Center; Boston College; Chestnut Hill MA 02467 USA
| | - Mohammad Movassaghi
- Department of Chemistry; Massachusetts Institute of Technology; Cambridge MA 02139 USA
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13
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Pritchett BP, Donckele EJ, Stoltz BM. Enantioselective Catalysis Coupled with Stereodivergent Cyclization Strategies Enables Rapid Syntheses of (+)-Limaspermidine and (+)-Kopsihainanine A. Angew Chem Int Ed Engl 2017; 56:12624-12627. [PMID: 28872739 DOI: 10.1002/anie.201707304] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Indexed: 01/09/2023]
Abstract
Enantioselective Pd-catalyzed allylic alkylations of dihydropyrido[1,2-a]indolone (DHPI) substrates were used to construct the C20-quaternary stereocenters of multiple monoterpene indole alkaloids. Stereodivergent Pictet-Spengler and Bischler-Napieralski cyclization/reduction cascades furnish the cis- and trans-fused azadecalin subunits present in Aspidosperma and Kopsia alkaloids, respectively, en route to highly efficient syntheses of (+)-limaspermidine and (+)-kopsihainanine A.
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Affiliation(s)
- Beau P Pritchett
- 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
| | - Etienne J Donckele
- 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
| | - Brian M Stoltz
- 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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14
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Pritchett BP, Donckele EJ, Stoltz BM. Enantioselective Catalysis Coupled with Stereodivergent Cyclization Strategies Enables Rapid Syntheses of (+)‐Limaspermidine and (+)‐Kopsihainanine A. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707304] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Beau P. Pritchett
- 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
| | - Etienne J. Donckele
- 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
| | - Brian M. Stoltz
- 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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15
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Tan PW, Seayad J, Dixon DJ. Expeditious and Divergent Total Syntheses of Aspidosperma Alkaloids Exploiting Iridium(I)-Catalyzed Generation of Reactive Enamine Intermediates. Angew Chem Int Ed Engl 2016; 55:13436-13440. [DOI: 10.1002/anie.201605503] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 08/18/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Peng Wen Tan
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; 12 Mansfield Road Oxford UK
- Organic Chemistry; Institute of Chemical and Engineering Sciences; 8 Biomedical Grove, Neuros, #07-01 Singapore 138665 Singapore
| | - Jayasree Seayad
- Organic Chemistry; Institute of Chemical and Engineering Sciences; 8 Biomedical Grove, Neuros, #07-01 Singapore 138665 Singapore
| | - Darren J. Dixon
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; 12 Mansfield Road Oxford UK
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16
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Tan PW, Seayad J, Dixon DJ. Expeditious and Divergent Total Syntheses of Aspidosperma Alkaloids Exploiting Iridium(I)-Catalyzed Generation of Reactive Enamine Intermediates. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605503] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng Wen Tan
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; 12 Mansfield Road Oxford UK
- Organic Chemistry; Institute of Chemical and Engineering Sciences; 8 Biomedical Grove, Neuros, #07-01 Singapore 138665 Singapore
| | - Jayasree Seayad
- Organic Chemistry; Institute of Chemical and Engineering Sciences; 8 Biomedical Grove, Neuros, #07-01 Singapore 138665 Singapore
| | - Darren J. Dixon
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; 12 Mansfield Road Oxford UK
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17
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Zheng N, Chang YY, Zhang LJ, Gong JX, Yang Z. Gold-Catalyzed Intramolecular Tandem Cyclization of Indole-Ynamides: Diastereoselective Synthesis of Spirocyclic Pyrrolidinoindolines. Chem Asian J 2015; 11:371-5. [DOI: 10.1002/asia.201500865] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Nan Zheng
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Yuan-Yuan Chang
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Li-Jie Zhang
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Jian-Xian Gong
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Zhen Yang
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); Peking- Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- Key Laboratory of Marine Drugs; Chinese Ministry of Education; School of Medicine and Pharmacy; Ocean University of China; 5 Yushan Road Qingdao 266003 China
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18
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Morris SA, Nguyen TH, Zheng N. Diastereoselective Oxidative C-N/C-O and C-N/C-N Bond Formation Tandems Initiated by Visible Light: Synthesis of Fused N-Arylindolines. Adv Synth Catal 2015; 357:2311-2316. [PMID: 26622221 DOI: 10.1002/adsc.201500317] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The synthesis of fused N-arylindolines using visible light photoredox catalysis has been developed. We previously described that photogenerated amine radical cations generate substituted indoles through an intermediate benzylic carbocation. Herein, we expand the application of this chemistry by trapping the benzylic carbocation with tethered heteronucleophiles. The reactivity of the photogenerated benzylic carbocation is explored and applied to a range of substrates with various electronic characters and ring constraints. The method described provides C2 and C3 fused indolines bearing a tetrasubstituted carbon stereocenter with greater than 99:1 diastereoselectivity in moderate to good yields.
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Affiliation(s)
- Scott A Morris
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Theresa H Nguyen
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Nan Zheng
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
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