51
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Zhang W, Chen X, An Y, Wang J, Zhuang C, Tang P, Chen F. Enantioselective Total Syntheses of (-)-20-epi-Vincamine and (-)-20-epi-Eburnamonine by Ir-Catalyzed Asymmetric Imine Hydrogenation/Lactamization Cascade. Chemistry 2020; 26:10439-10443. [PMID: 32500532 DOI: 10.1002/chem.202002404] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 02/05/2023]
Abstract
The Eburnamine-Vincamine alkaloids have been studied intensively over the past six decades for their outstandingly potent vasorelaxation activity. Stereocontrolled assembly of the C20/C21 adjacent chiral centers has been a formidable challenge in the synthesis of this family. Herein, we report a concise stereoselective total synthesis of two trans-ring-fused non-natural analogues, (-)-20-epi-Vincamine and (-)-20-epi-Eburnamonine, that features the following key steps: a) a continuous-flow oxidation/lactam alcoholysis cascade producing the symmetrical dihydro-β-carboline diester precursors, and b) a highly stereoselective Ir/f-Binaphane-catalyzed hydrogenation/lactamization cascade leading to the privileged trans-(20R, 21S) lactam ester scaffold with high-level enantio- and diastereocontrol.
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Affiliation(s)
- Wen Zhang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Xiangtao Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yi An
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jiaqi Wang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis, for Chiral Drugs, Shanghai, 200433, China
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis, for Chiral Drugs, Shanghai, 200433, China
| | - Pei Tang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Fener Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis, for Chiral Drugs, Shanghai, 200433, China
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52
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He H, Cao R, Cao R, Liu XY, Li W, Yu D, Li Y, Liu M, Wu Y, Wu P, Yang JS, Yan Y, Yang J, Zheng ZB, Zhong W, Qin Y. A light- and heat-driven glycal diazidation approach to nitrogenous carbohydrate derivatives with antiviral activity. Org Biomol Chem 2020; 18:6155-6161. [PMID: 32716466 DOI: 10.1039/d0ob01172j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aminated mimetics of 2-keto-3-deoxy-sugar acids such as the anti-influenza clinical drugs oseltamivir (Tamiflu) and zanamivir (Relenza) are important bioactive molecules. Development of synthetic methodologies for accessing such compound collections is highly desirable. Herein, we describe a simple, catalyst-free glycal diazidation protocol enabled by visible light-driven conditions. This new method requires neither acid promoters nor transition-metal catalysts and takes place at ambient temperature within 1-2 hours. Notably, the desired transformations could be promoted by thermal conditions as well, albeit with lower efficacy compared to the light-induced conditions. Different sugar acid-derived glycal templates have been converted into a range of 2,3-diazido carbohydrate analogs by harnessing this mild and scalable approach, leading to the discovery of new antiviral agents.
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Affiliation(s)
- Huan He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Ruiyuan Cao
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Ruidi Cao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Wei Li
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Di Yu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yuexiang Li
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Miaomiao Liu
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Yanmei Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Pingzhou Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Jin-Song Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yunzheng Yan
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Jingjing Yang
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Zhi-Bing Zheng
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Wu Zhong
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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53
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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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54
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Bonjoch J, Diaba F. Radical Reactions in Alkaloid Synthesis: A Perspective from Carbon Radical Precursors. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000391] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Josep Bonjoch
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
| | - Faiza Diaba
- Laboratori de Química Orgànica Facultat de Farmàcia, IBUB Universitat de Barcelona Av. Joan XXIII s/n 08028 Barcelona Spain
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55
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Chen ZD, Chen Z, Wang QE, Si CM, Wei BG. Stereoselective approach to access 3-tert-Butyl-Dimethylsiloxy-2,6-Substituted piperidines through nucleophilic addition of N,O-acetals with organozinc reagents. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152051] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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56
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NHC-Ni catalyzed 1,3- and 1,4-diastereodivergent heterocycle synthesis from hetero-substituted enyne. Commun Chem 2020; 3:50. [PMID: 36703443 PMCID: PMC9814851 DOI: 10.1038/s42004-020-0299-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/03/2020] [Indexed: 01/29/2023] Open
Abstract
Diastereodivergent heterocycle synthesis has been recognized as an important tool for drug discovery in recent years, yet strategies based on nickelacycle formation have not been established. Here, we report a NHC-Ni catalyzed highly 1,3- and 1,4-diastereodivergent heterocycle synthesis from enyne, which is achieved by manipulating the enyne N-substituent (allowing switching of selectivity from up to 2:98 to 98:2). The key to success is the efficient diastereodivergent formation of a nickelacyclopentene, with broad enyne scope at mild conditions, which subsequently provides reductive hydroalkenylation, acylation and silylation products on demand. Diastereoisomers which are sterically hard to distinguish or difficult to access by conventional routes are now accessible easily, including those with very similar 4°, contiguous and skipped stereocenters.
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57
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Abe M. Recent Study on Synthesis of Cinchona Alkaloids. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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58
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Zhu N, Chiou MF, Xiong H, Su M, Su M, Li Y, Wan WM, Bao H. The Introduction of the Radical Cascade Reaction into Polymer Chemistry: A One-Step Strategy for Synchronized Polymerization and Modification. iScience 2020; 23:100902. [PMID: 32106054 PMCID: PMC7044516 DOI: 10.1016/j.isci.2020.100902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/10/2019] [Accepted: 12/20/2019] [Indexed: 12/17/2022] Open
Abstract
Polymerization and modification play central roles in polymer chemistry and are generally implemented in two steps, which suffer from the time-consuming two-step strategy and present considerable challenge for complete modification. By introducing the radical cascade reaction (RCR) into polymer chemistry, a one-step strategy is demonstrated to achieve synchronized polymerization and complete modification in situ. Attributed to the cascade feature of iron-catalyzed three-component alkene carboazidation RCR exhibiting carbon-carbon bond formation and carbon-azide bond formation with extremely high efficiency and selectivity in one step, radical cascade polymerization therefore enables the in situ synchronized polymerization through continuous carbon-carbon bond formation and complete modification through carbon-azide bond formation simultaneously. This results in a series of α, β, and γ poly(amino acid) precursors. This result not only expands the methodology library of polymerization, but also the possibility for polymer science to achieve functional polymers with tailored chemical functionality from in situ polymerization.
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Affiliation(s)
- Nengbo Zhu
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Mong-Feng Chiou
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Haigen Xiong
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Min Su
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Muqiao Su
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Yajun Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Wen-Ming Wan
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China.
| | - Hongli Bao
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China.
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59
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Shabalin DA, Ushakov IA, Kuzmin AV, Vashchenko AV, Yu. Schmidt E, Trofimov BA. Site- and stereoselective synthesis of bridgehead tetrahydropyrrolo[2,3-c]pyridines from ketoximes and acetylene gas in two synthetic operations. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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60
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Miller ER, Hovey MT, Scheidt KA. A Concise, Enantioselective Approach for the Synthesis of Yohimbine Alkaloids. J Am Chem Soc 2020; 142:2187-2192. [PMID: 31951394 DOI: 10.1021/jacs.9b12319] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a concise, enantioselective synthesis of the yohimbine alkaloids (-)-rauwolscine and (-)-alloyohimbane. The key transformation involves a highly enantio- and diastereoselective NHC-catalyzed dimerization and an amidation/N-acyliminium ion cyclization sequence to furnish four of the five requisite rings and three of the five stereocenters in two operations. This route also provides efficient access to all four diastereomeric arrangements of the core stereotriad of the yohimbine alkaloids from a common intermediate. This platform approach in combination with the ability to access both enantiomers from the carbene-catalyzed reaction is a powerful strategy that can produce a wide range of complex alkaloids and related structures for future biomedical investigations.
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Affiliation(s)
- Eric R Miller
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - M Todd Hovey
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Karl A Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
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61
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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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62
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He W, Wang P, Chen J, Xie W. Recent progress in the total synthesis of Strychnos alkaloids. Org Biomol Chem 2020; 18:1046-1056. [DOI: 10.1039/c9ob02627d] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The recent synthetic approaches toward Strychnos alkaloids are summarized, including novel synthetic methodologies and strategies.
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Affiliation(s)
- Weigang He
- School of Biology and Food Engineering
- Changshu Institute of Technology
- Changshu 215500
- China
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
| | - Pengyan Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Junhan Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
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63
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Zhang Z, Zhang X, Nagib DA. Chiral piperidines from acyclic amines via enantioselective, radical-mediated δ C-H cyanation. Chem 2019; 5:3127-3134. [PMID: 32296736 PMCID: PMC7158869 DOI: 10.1016/j.chempr.2019.09.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Piperidines are the most prevalent heterocycle found in medicines. Yet, while they are often chiral, there remain no robust methods for their asymmetric syntheses. To solve this challenge, we have interrupted the century-old Hofmann-Löffler-Freytag (HLF) reaction to afford this privileged heterocycle. The catalytic, regio- and enantio- selective δ C-H cyanation of acyclic amines described herein, incorporates a carbonyl equivalent selectively at the δ position. This δ C-H cyanation is enabled by a chiral Cu catalyst, which both initiates and terminates intramolecular hydrogen atom transfer (HAT) by an N-centered radical relay mechanism. The broad scope and utility of this highly enantioselective method for δ C-C formation is presented, as well as conversion of the resulting enantioenriched δ amino nitriles to a family of chiral piperidines. Experiments probing the chemo-, regio-, and enantio- selectivity of this HAT mechanism are also included to enable extension to other stereoselective δ C-H functionalizations.
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Affiliation(s)
- Zuxiao Zhang
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, United States
| | - Xin Zhang
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, United States
| | - David A Nagib
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, United States
- Lead Contact
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64
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Zhang X, Anderson JC. A Divergent Synthetic Route to the Vallesamidine and Schizozygine Alkaloids: Total Synthesis of (+)‐Vallesamidine and (+)‐14,15‐Dehydrostrempeliopine. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910593] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiangyu Zhang
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - James C. Anderson
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
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65
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Zhang X, Anderson JC. A Divergent Synthetic Route to the Vallesamidine and Schizozygine Alkaloids: Total Synthesis of (+)-Vallesamidine and (+)-14,15-Dehydrostrempeliopine. Angew Chem Int Ed Engl 2019; 58:18040-18045. [PMID: 31538685 DOI: 10.1002/anie.201910593] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Indexed: 11/05/2022]
Abstract
The total synthesis of representative members of the schizozygine alkaloids, (+)-vallesamidine and (+)-14,15-dehydrostrempeliopine, were completed from a late-stage divergent intermediate. The synthesis took advantage of efficient nitro-group reactions with the A/B/C ring skeleton constructed concisely on a gram scale through an asymmetric Michael addition, nitro-Mannich/lactamisation, Tsuji-Trost allylation, and intramolecular C-N coupling reaction. Other key features of the synthesis are a novel [1,4] hydride transfer/Mannich-type cyclisation to build ring E and a diastereoselective ring-closing metathesis reaction to construct ring D. This approach gave access to a late-stage C14,C15 alkene divergent intermediate that could be simply transformed into (+)-vallesamidine, (+)-14,15-dehydrostrempeliopine, and potentially other schizozygine alkaloids and unnatural derivatives.
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Affiliation(s)
- Xiangyu Zhang
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - James C Anderson
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
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66
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67
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Wang XM, Liu YW, Ma RJ, Si CM, Wei BG. Synthesis of 1,4- and 1,5-Amino Alcohols via Nucleophilic Addition of Semicyclic N, O-Acetal with Organozinc Reagents. J Org Chem 2019; 84:11261-11267. [PMID: 31403296 DOI: 10.1021/acs.joc.9b01545] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An efficient approach to access functionalized 1,4- and 1,5-amino alcohols has been developed through the nucleophilic addition of semicyclic N,O-acetal with organozinc reagents. A number of substituted benzyl zinc reagents (including nitrile and ester substituted) could react with semicyclic N,O-acetals 1 and 2, affording the desired products 3a-3p and 4a-4o in good to excellent yields.
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Affiliation(s)
- Xue-Mei Wang
- Department of Natural Products Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Yi-Wen Liu
- Department of Natural Products Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Rui-Jun Ma
- Department of Natural Products Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Chang-Mei Si
- Department of Natural Products Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
| | - Bang-Guo Wei
- Department of Natural Products Chemistry, School of Pharmacy , Fudan University , 826 Zhangheng Road , Shanghai 201203 , China
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68
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Zhang Q, Xu D, Yang J, He L, Zhang M. Construction of the A/B/C core of mexicanolides via a tandem double-aldol reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.150992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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69
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Development of bifunctional organocatalysts and application to asymmetric total synthesis of naucleofficine I and II. Nat Commun 2019; 10:3394. [PMID: 31358765 PMCID: PMC6662887 DOI: 10.1038/s41467-019-11382-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/11/2019] [Indexed: 01/07/2023] Open
Abstract
The proline-type organocatalysts has been efficiently employed to catalyze a wide range of asymmetric transformations; however, there are still many synthetically useful and challenging transformations that remain unachievable in an asymmetric fashion. Herein, a chiral bifunctional organocatalyst with a spirocyclic pyrrolidine backbone-derived containing fluoro-alkyl and aryl sulfonamide functionalities, are designed, prepared, and examined in the asymmetric Mannich/acylation/Wittig reaction sequence of 3,4-dihydro-β-carboline with acetaldehyde, acyl halides, and Wittig reagents. As a result, the spirocyclic pyrrolidine trifluoromethanesulfonamide catalyst can facilitate this versatile sequence as demonstrated by 18 examples displaying excellent enantioselectivity (up to 94% ee), as well as moderate to good yields (up to 54% over 3 steps). As a practical application, the asymmetric total synthesis of naucleofficine I (1a) and II (1b) in ten steps have been accomplished. Natural products often contain complex N-fused polycyclic structures with multiple substituents and stereocentres. Here, the authors developed a bifunctional organocatalyst that is instrumental in obtaining such structures and applied it to the total synthesis of naucleofficine I and II in 6 steps.
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70
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Ma ZY, Guo LN, You Y, Yang F, Hu M, Duan XH. Visible Light Driven Alkylation of C(sp 3)-H Bonds Enabled by 1,6-Hydrogen Atom Transfer/Radical Relay Addition. Org Lett 2019; 21:5500-5504. [PMID: 31246029 DOI: 10.1021/acs.orglett.9b01804] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A visible-light-driven sulfamate esters guided alkylation of unactivated C(sp3)-H bonds enabled by a 1,6-HAT/radical addition cascade is described. Not only structurally diverse Michael acceptors but also styrenes are amenable to this alkylation reaction. Notably, the N-H bonds activation radical relay refrained from prefunctionalization and using excess external oxidants.
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Affiliation(s)
- Zhi-Yong Ma
- Department of Chemistry, School of Science, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Li-Na Guo
- Department of Chemistry, School of Science, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Ying You
- Department of Chemistry, School of Science, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Fan Yang
- Department of Chemistry, School of Science, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Mingyou Hu
- Department of Chemistry, School of Science, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an 710049 , P. R. China
| | - Xin-Hua Duan
- Department of Chemistry, School of Science, Xi'an Key Laboratory of Sustainable Energy Material Chemistry and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter , Xi'an Jiaotong University , Xi'an 710049 , P. R. China.,State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou 730000 , P. R. China
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71
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Liu XY, Qin Y. Indole Alkaloid Synthesis Facilitated by Photoredox Catalytic Radical Cascade Reactions. Acc Chem Res 2019; 52:1877-1891. [PMID: 31264824 DOI: 10.1021/acs.accounts.9b00246] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The monoterpene indole alkaloids, containing over 3000 known members and more than 40 structural types, represent one of the largest natural product families that have proven to be an important drug source. Their complex chemical structures and significant biological activities have rendered these alkaloids attractive targets in the synthetic community for decades. While chemists have developed many synthetic methodologies and tactics toward this end, general strategies allowing divergent access to a large variety of structural types and members of monoterpene indole alkaloids are still limited and highly desirable. Photoredox catalysis has emerged in recent years as a powerful tool to realize chemical transformations via single electron transfer (SET) processes that would otherwise be inaccessible. In particular, when the radical species generated by the visible light photoinduced approach is involved in well-designed cascade reactions, the formation of multiple chemical bonds and the assembly of structurally complex molecules would be secured in a green and economic manner. This protocol might serve to remodel the way of thinking for the preparation of useful pharmaceuticals and complex natural products. Due to a long-standing interest in the synthesis of diverse indole alkaloids, our group previously developed a cyclopropanation strategy ( Qin , Y. Acc. Chem. Res. 2011 , 44 , 447 ) that was versatile to access several intriguing indole alkaloid molecules. With an idea of developing more general synthetic approaches to as many members of various indole alkaloids as possible, we recently disclosed new radical cascade reactions enabled by photoredox catalysis, leading to the collective asymmetric total synthesis of 42 monoterpene indole alkaloids belonging to 7 structural types. Several important discoveries deserve to be highlighted. First, the use of photocatalytic technology allowed us to achieve an unusual reaction pathway that reversed the conventional reactivity between two nucleophilic amine and enamine groups. Second, a crucial nitrogen-centered radical, directly generated from a sulfonamide N-H bond, triggered three types of cascade reactions to deliver indole alkaloid cores with manifold functionalities and controllable diastereoselectivities. Moreover, expansion of this catalytic, scalable, and general methodology permitted the total synthesis of a large collection of indole alkaloids. In this Account, we wish to provide a complete picture of our studies concerning the original synthetic design, method development, and applications in total synthesis. It is anticipated that the visible-light-driven cascade strategy will find further utility in the realm of natural product synthesis.
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Affiliation(s)
- Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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72
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He Y, Liu Z, Wu D, Li Z, Robeyns K, Van Meervelt L, Van der Eycken EV. Modular Access to Diverse Bridged Indole Alkaloid Mimics via a Gold-Triggered Cascade Dearomative Spirocarbocyclization/[4 + 2] Cycloaddition Sequence. Org Lett 2019; 21:4469-4474. [DOI: 10.1021/acs.orglett.9b01296] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yi He
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Zhen Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, 200237 Shanghai, China
| | - Danjun Wu
- College of Pharmaceutical Science, Zhejiang University of Technology, 18 Chaowang Road, 310014 Hangzhou, China
| | - Zhenghua Li
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Koen Robeyns
- Institute of Condensed Matter and Nanosciences (IMCN), Université Catholique de Louvain, 1 Place Louis Pasteur, B-1348 Louvain-la-Neuve, Belgium
| | - Luc Van Meervelt
- Biomolecular Architecture, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
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73
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Zhao Q, Chen J, Zhou X, Yu X, Chen J, Xiao W. Photogenerated Neutral Nitrogen Radical Catalyzed Bifunctionalization of Alkenes. Chemistry 2019; 25:8024-8029. [DOI: 10.1002/chem.201901665] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Quan‐Qing Zhao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisKey Laboratory of Pesticides & Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 P. R. China
| | - Jun Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisKey Laboratory of Pesticides & Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 P. R. China
| | - Xue‐Song Zhou
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisKey Laboratory of Pesticides & Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 P. R. China
| | - Xiao‐Ye Yu
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisKey Laboratory of Pesticides & Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 P. R. China
| | - Jia‐Rong Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisKey Laboratory of Pesticides & Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 P. R. China
| | - Wen‐Jing Xiao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green SynthesisKey Laboratory of Pesticides & Chemical Biology Ministry of EducationCollege of ChemistryCentral China Normal University 152 Luoyu Road Wuhan Hubei 430079 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry 345 Lingling Road Shanghai 200032 P. R. China
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74
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Zhao QQ, Li M, Xue XS, Chen JR, Xiao WJ. Visible-Light-Driven Neutral Nitrogen Radical Mediated Intermolecular Styrene Difunctionalization. Org Lett 2019; 21:3861-3865. [DOI: 10.1021/acs.orglett.9b01362] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Quan-Qing Zhao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Man Li
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiao-Song Xue
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jia-Rong Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
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75
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Li W, Chen Z, Yu D, Peng X, Wen G, Wang S, Xue F, Liu X, Qin Y. Asymmetric Total Syntheses of the Akuammiline Alkaloids (−)‐Strictamine and (−)‐Rhazinoline. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wenfei Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Zhitao Chen
- School of Pharmaceutic ScienceChongqing University Chongqing 401331 P. R. China
| | - Di Yu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Xin Peng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Guohua Wen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Siqi Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Fei Xue
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Xiao‐Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
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76
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Li W, Chen Z, Yu D, Peng X, Wen G, Wang S, Xue F, Liu X, Qin Y. Asymmetric Total Syntheses of the Akuammiline Alkaloids (−)‐Strictamine and (−)‐Rhazinoline. Angew Chem Int Ed Engl 2019; 58:6059-6063. [DOI: 10.1002/anie.201901074] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Wenfei Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Zhitao Chen
- School of Pharmaceutic ScienceChongqing University Chongqing 401331 P. R. China
| | - Di Yu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Xin Peng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Guohua Wen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Siqi Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Fei Xue
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Xiao‐Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education MinistrySichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 P. R. China
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77
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Trost BM, Bai Y, Bai WJ, Schultz JE. Enantioselective Divergent Synthesis of C19-Oxo Eburnane Alkaloids via Palladium-Catalyzed Asymmetric Allylic Alkylation of an N-Alkyl-α,β-unsaturated Lactam. J Am Chem Soc 2019; 141:4811-4814. [PMID: 30848892 DOI: 10.1021/jacs.9b00788] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The C19-oxo-functionalized eburnane alkaloids display unique chemical structure and interesting biological activity. Herein, we report a divergent enantioselective strategy to access these alkaloids by use of a challenging palladium-catalyzed asymmetric allylic alkylation of an N-alkyl-α,β-unsaturated lactam. 19-( S)-OH-Δ14-vincamone (phutdonginin), (-)-19-OH-eburnamine, (+)-19-oxoeburnamine, and (+)-19-OH-eburnamonine (1-4) have been concisely synthesized for the first time in 11 to 13 steps.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry , Stanford University , Stanford , California 94305-5080 , United States
| | - Yu Bai
- Department of Chemistry , Stanford University , Stanford , California 94305-5080 , United States
| | - Wen-Ju Bai
- Department of Chemistry , Stanford University , Stanford , California 94305-5080 , United States
| | - Johnathan E Schultz
- Department of Chemistry , Stanford University , Stanford , California 94305-5080 , United States
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78
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Naskar S, Roy Chowdhury S, Mondal S, Maiti DK, Mishra S, Das I. Visible-Light-Activated Divergent Reactivity of Dienones: Dimerization in Neat Conditions and Regioselective E to Z Isomerization in the Solvent. Org Lett 2019; 21:1578-1582. [DOI: 10.1021/acs.orglett.9b00083] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sandip Naskar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sabyasachi Roy Chowdhury
- Department of Chemistry, Indian Institute of Technology (IIT) Kharagpur, Kharagpur, West Bengal 721302, India
| | - Somrita Mondal
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India
| | - Dilip K. Maiti
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India
| | - Sabyashachi Mishra
- Department of Chemistry, Indian Institute of Technology (IIT) Kharagpur, Kharagpur, West Bengal 721302, India
| | - Indrajit Das
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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79
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Li G, Piemontesi C, Wang Q, Zhu J. Stereoselective Total Synthesis of Eburnane‐Type Alkaloids Enabled by Conformation‐Directed Cyclization and Rearrangement. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813920] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Guang Li
- Laboratory of Synthesis and Natural ProductsInstitute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Cyril Piemontesi
- Laboratory of Synthesis and Natural ProductsInstitute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural ProductsInstitute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural ProductsInstitute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
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80
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Li G, Piemontesi C, Wang Q, Zhu J. Stereoselective Total Synthesis of Eburnane-Type Alkaloids Enabled by Conformation-Directed Cyclization and Rearrangement. Angew Chem Int Ed Engl 2019; 58:2870-2874. [PMID: 30600890 DOI: 10.1002/anie.201813920] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Indexed: 11/11/2022]
Abstract
Controlling the cis C20/C21 relative stereochemistry remains an unsolved issue in the synthesis of eburnane-type indole alkaloids. Provided herein is a simple solution to this problem by developing a unified and diastereoselective synthesis of four representative members of this class of natural products, namely, eburnamonine, larutensine, terengganensine B, and melokhanine E. The synthesis features the following key steps: a) an α-iminol rearrangement transforming the 3-hydroxyindolenine into spiroindolin-3-one, b) a highly diastereoselective conformation-directed cyclization leading to the melokhanine skeleton with the desired C20/C21 cis stereochemistry, and c) either an aza-pinacol or an unprecedented α-aminoketone rearrangement converting spiroindolinone back into the indole skeleton.
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Affiliation(s)
- Guang Li
- 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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81
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Del Castillo E, Muñiz K. Enantioselective Synthesis of Nicotine via an Iodine-Mediated Hofmann-Löffler Reaction. Org Lett 2019; 21:705-708. [PMID: 30672295 DOI: 10.1021/acs.orglett.8b03909] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An iodine-mediated Hofmann-Löffler reaction has been developed that enables the first enantioselective synthesis of nicotine based on this synthetic methodology. The effect of the free pyridine core on the involved electrophilic iodine reagents was explored in detail. The final synthesis proceeds under moderate reaction conditions that tolerate the free pyridine core. The same synthetic sequence is also applicable to a number of derivatives with higher substituted pyridine cores, including bipyridine derivatives.
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Affiliation(s)
- Estefanía Del Castillo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16 , 43007 Tarragona , Spain
| | - Kilian Muñiz
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Av. Països Catalans 16 , 43007 Tarragona , Spain.,ICREA , Pg. Lluís Companys 23 , 08010 Barcelona , Spain
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82
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Han P, Mao ZY, Si CM, Zhou Z, Wei BG, Lin GQ. Stereoselective Synthesis of Pyrido- and Pyrrolo[1,2-c][1,3]oxazin-1-ones via a Nucleophilic Addition–Cyclization Process of N,O-Acetal with Ynamides. J Org Chem 2018; 84:914-923. [DOI: 10.1021/acs.joc.8b02795] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Pan Han
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Zhuo-Ya Mao
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Chang-Mei Si
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Zhu Zhou
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Bang-Guo Wei
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Guo-Qiang Lin
- School of Pharmacy and Institutes of Biomedical Sciences, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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83
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He L, Wang X, Wu X, Meng Z, Peng X, Liu XY, Qin Y. Asymmetric Total Synthesis of (+)-Strychnine. Org Lett 2018; 21:252-255. [PMID: 30560668 DOI: 10.1021/acs.orglett.8b03686] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Liping He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiaobei Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiaoqing Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhaoxiang Meng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xin Peng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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84
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Samarium(II) folding cascades involving hydrogen atom transfer for the synthesis of complex polycycles. Nat Commun 2018; 9:4802. [PMID: 30442955 PMCID: PMC6237924 DOI: 10.1038/s41467-018-07194-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/16/2018] [Indexed: 01/01/2023] Open
Abstract
The expedient assembly of complex, natural product-like small molecules can deliver new chemical entities with the potential to interact with biological systems and inspire the development of new drugs and probes for biology. Diversity-oriented synthesis is a particularly attractive strategy for the delivery of complex molecules in which the 3-dimensional architecture varies across the collection. Here we describe a folding cascade approach to complex polycyclic systems bearing multiple stereocentres mediated by reductive single electron transfer (SET) from SmI2. Simple, linear substrates undergo three different folding pathways triggered by reductive SET. Two of the radical cascade pathways involve the activation and functionalization of otherwise inert secondary alkyl and benzylic groups by 1,5-hydrogen atom transfer (HAT). Combination of SmI2, a privileged reagent for cascade reactions, and 1,5-HAT can lead to complexity-generating radical sequences that unlock access to diverse structures not readily accessible by other means.
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85
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Wang Y, Leng L, Liu Y, Dai G, Xue F, Chen Z, Meng J, Wen G, Xiao Y, Liu XY, Qin Y. Asymmetric Synthesis of an Advanced Tetracyclic Framework of (+)-Sarain A. Org Lett 2018; 20:6701-6704. [PMID: 30346782 DOI: 10.1021/acs.orglett.8b02779] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Lingying Leng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Guiying Dai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Fanglin Xue
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Zhihao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jiao Meng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Guohua Wen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yaxin Xiao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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86
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An XD, Zhang H, Xu Q, Yu L, Yu S. Stereodivergent Synthesis of α-Aminomethyl Cinnamyl Ethers via
Photoredox-Catalyzed Radical Relay Reaction. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800387] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiao-De An
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210023 China
| | - Hao Zhang
- Guangling College, School of Chemistry and Chemical Engineering, Yangzhou University; Yangzhou Jiangsu 225002 China
| | - Qing Xu
- Guangling College, School of Chemistry and Chemical Engineering, Yangzhou University; Yangzhou Jiangsu 225002 China
| | - Lei Yu
- Guangling College, School of Chemistry and Chemical Engineering, Yangzhou University; Yangzhou Jiangsu 225002 China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University; Nanjing 210023 China
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87
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Wang N, Gu QS, Li ZL, Li Z, Guo YL, Guo Z, Liu XY. Direct Photocatalytic Synthesis of Medium-Sized Lactams by C−C Bond Cleavage. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808890] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Na Wang
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
- College of Materials Science & Engineering; Key Laboratory of Interface Science and Engineering in Advanced Materials; Ministry of Education; Taiyuan University of Technology; Shanxi 030024 China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies; Southern University of Science and Technology; Shenzhen 518055 China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies; Southern University of Science and Technology; Shenzhen 518055 China
| | - Zhuang Li
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
| | - Yu-Long Guo
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
| | - Zhen Guo
- College of Materials Science & Engineering; Key Laboratory of Interface Science and Engineering in Advanced Materials; Ministry of Education; Taiyuan University of Technology; Shanxi 030024 China
| | - Xin-Yuan Liu
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
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88
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Wang N, Gu QS, Li ZL, Li Z, Guo YL, Guo Z, Liu XY. Direct Photocatalytic Synthesis of Medium-Sized Lactams by C-C Bond Cleavage. Angew Chem Int Ed Engl 2018; 57:14225-14229. [PMID: 30178906 DOI: 10.1002/anie.201808890] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/03/2018] [Indexed: 11/08/2022]
Abstract
Reported is a novel two-step ring-expansion strategy for expeditious synthesis of all ring sizes of synthetically challenging (hetero)aryl-fused medium-sized lactams from readily available 5-8-membered cyclic ketones. This step-economic approach features a remote radical (hetero)aryl migration from C to N under visible-light conditions. Broad substrate scope, good functional-group tolerance, high efficiency, and mild reaction conditions make this procedure very attractive. In addition, this method also provides expedient access to 13-15-membered macrolactams upon an additional one-step manipulation. Mechanistic studies indicate that the reaction involves an amidyl radical and is promoted by acid.
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Affiliation(s)
- Na Wang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China.,College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhuang Li
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yu-Long Guo
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhen Guo
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, China
| | - Xin-Yuan Liu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
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89
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Dong J, Ding T, Zhang S, Chen Z, Tu Y. A Facile Approach to Oximes and Ethers by a Tandem NO
+
‐Initiated Semipinacol Rearrangement and H‐Elimination. Angew Chem Int Ed Engl 2018; 57:13192-13196. [DOI: 10.1002/anie.201807861] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Jia‐Wei Dong
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Tongmei Ding
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Shu‐Yu Zhang
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Zhi‐Min Chen
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Yong‐Qiang Tu
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 P. R. China
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90
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Dong J, Ding T, Zhang S, Chen Z, Tu Y. A Facile Approach to Oximes and Ethers by a Tandem NO
+
‐Initiated Semipinacol Rearrangement and H‐Elimination. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807861] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jia‐Wei Dong
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Tongmei Ding
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Shu‐Yu Zhang
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Zhi‐Min Chen
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Yong‐Qiang Tu
- School of Chemistry and Chemical Engineering andShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 P. R. China
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91
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Liu W, Qin W, Wang X, Xue F, Liu XY, Qin Y. Bioinspired Synthesis of (+)-Cinchonidine Using Cascade Reactions. Angew Chem Int Ed Engl 2018; 57:12299-12302. [PMID: 30084528 DOI: 10.1002/anie.201804848] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/09/2018] [Indexed: 11/06/2022]
Abstract
The development of efficient syntheses of complex natural products has long been a major challenge in synthetic chemistry. Designing cascade reactions and employing bioinspired transformations are an important and reliable means of achieving this goal. Presented here is a combination of these two strategies, which allow efficient asymmetric synthesis of the cinchona alkaloid (+)-cinchonidine. The key steps of this synthesis are a controllable, visible-light-induced photoredox radical cascade reaction to efficiently access the tetracyclic monoterpenoid indole alkaloid core, as well as a practical biomimetic cascade rearrangement for the indole to quinoline transformation. The use of stereoselective chemical transformations in this work makes it an efficient synthesis of (+)-cinchonidine.
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Affiliation(s)
- Wentao Liu
- School of Pharmaceutic Science, Chongqing University, Chongqing, 401331, P. R. China
| | - Wenfang Qin
- School of Pharmaceutic Science, Chongqing University, Chongqing, 401331, P. R. China
| | - Xiaobei Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
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92
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Liu W, Qin W, Wang X, Xue F, Liu XY, Qin Y. Bioinspired Synthesis of (+)-Cinchonidine Using Cascade Reactions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804848] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wentao Liu
- School of Pharmaceutic Science; Chongqing University; Chongqing 401331 P. R. China
| | - Wenfang Qin
- School of Pharmaceutic Science; Chongqing University; Chongqing 401331 P. R. China
| | - Xiaobei Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education; and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
| | - Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education; and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education; and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education; and Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
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93
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Hou ZW, Yan H, Song JS, Xu HC. Electrochemical Synthesis of (Aza)indolinesviaDehydrogenative [3+2] Annulation: Application to Total Synthesis of (±)-Hinckdentine A. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800301] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zhong-Wei Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, iChEM and College of Chemistry and Chemical Engineering, Xiamen University; Xiamen Fujian 361005 China
| | - Hong Yan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, iChEM and College of Chemistry and Chemical Engineering, Xiamen University; Xiamen Fujian 361005 China
| | - Jin-Shuai Song
- Fujian Institute of Research on Structure of Matter, Chinese Academy of Sciences; Fuzhou Fujian 350002 China
| | - Hai-Chao Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, iChEM and College of Chemistry and Chemical Engineering, Xiamen University; Xiamen Fujian 361005 China
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94
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Zhao Y, Lv Y, Xia W. Synthesis of Cyclic Compounds via Photoinduced Radical Cyclization Cascade of C=C bonds. CHEM REC 2018; 19:424-439. [DOI: 10.1002/tcr.201800050] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/29/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Yating Zhao
- College of Chemical and Material EngineeringQuzhou University Quzhou Zhejiang 324000 China
- State Key Lab of Urban Water Resource and EnvironmentSchool of ScienceHarbin Institute of Technology (Shenzhen) Shenzhen Guangzhou 518055 China
| | - Yanwen Lv
- College of Chemical and Material EngineeringQuzhou University Quzhou Zhejiang 324000 China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and EnvironmentSchool of ScienceHarbin Institute of Technology (Shenzhen) Shenzhen Guangzhou 518055 China
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95
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Shen T, Zhu B, Lin F, Pan J, Wei J, Luo X, Liu J, Jiao N. Direct Synthesis of Structurally Divergent Indole Alkaloids from Simple Chemicals. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800258] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tao Shen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
| | - Bencong Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
| | - Fengguirong Lin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
| | - Jun Pan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
| | - Jialiang Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
| | - Xiao Luo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
| | - Jianzhong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Rd. 38, Beijing 100191 China
- State Key Laboratory of Organometallic Chemistry; Chinese Academy of Sciences; Shanghai 200062 China
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96
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Yi J, Du G, Zhao Y, Zhang L, Li B, Zhu W, Huang C, Li Y, Guo F. Bavachinin analogues as agonists of pan-peroxisome proliferator-activated receptors. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2197-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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97
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Xue F, Wang F, Liu J, Di J, Liao Q, Lu H, Zhu M, He L, He H, Zhang D, Song H, Liu XY, Qin Y. A Desulfurative Strategy for the Generation of Alkyl Radicals Enabled by Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2018; 57:6667-6671. [PMID: 29671934 DOI: 10.1002/anie.201802710] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Indexed: 01/25/2023]
Abstract
Herein, we present a new desulfurative method for generating primary, secondary, and tertiary alkyl radicals through visible-light photoredox catalysis. A process that involves the generation of N-centered radicals from sulfinamide intermediates, followed by subsequent fragmentation, is critical to forming the corresponding alkyl radical species. This strategy has been successfully applied to conjugate addition reactions that features mild reaction conditions, broad substrate scope (>60 examples), and good functional-group tolerance.
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Affiliation(s)
- Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Falu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Jiazhen Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Jiamei Di
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Qi Liao
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Huifang Lu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Liping He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education, Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
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98
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Xue F, Wang F, Liu J, Di J, Liao Q, Lu H, Zhu M, He L, He H, Zhang D, Song H, Liu X, Qin Y. A Desulfurative Strategy for the Generation of Alkyl Radicals Enabled by Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802710] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Falu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Jiazhen Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Jiamei Di
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Qi Liao
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Huifang Lu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Min Zhu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Liping He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Hao Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Xiao‐Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of EducationSichuan Research Center of Precision Engineering Technology for Small Molecule DrugsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
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Jarret M, Tap A, Kouklovsky C, Poupon E, Evanno L, Vincent G. Bioinspired Oxidative Cyclization of the Geissoschizine Skeleton for the Total Synthesis of (−)-17-nor-Excelsinidine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802610] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maxime Jarret
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
| | - Aurélien Tap
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
| | - Erwan Poupon
- Pharmacognosie et chimie des substances naturelles; BioCIS; Univ. Paris-Sud, Université Paris-Saclay, CNRS; 92290 Châtenay-Malabry France
| | - Laurent Evanno
- Pharmacognosie et chimie des substances naturelles; BioCIS; Univ. Paris-Sud, Université Paris-Saclay, CNRS; 92290 Châtenay-Malabry France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
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Jarret M, Tap A, Kouklovsky C, Poupon E, Evanno L, Vincent G. Bioinspired Oxidative Cyclization of the Geissoschizine Skeleton for the Total Synthesis of (-)-17-nor-Excelsinidine. Angew Chem Int Ed Engl 2018; 57:12294-12298. [PMID: 29575642 DOI: 10.1002/anie.201802610] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 03/19/2018] [Indexed: 11/10/2022]
Abstract
We report the first total synthesis of (-)-17-nor-excelsinidine, a zwitterionic monoterpene indole alkaloid that displays an unusual N4-C16 connection. Inspired by the postulated biosynthesis, we explored an oxidative coupling approach from the geissoschizine framework to forge the key ammonium-acetate connection. Two strategies allowed us to achieve this goal, namely an intramolecular nucleophilic substitution on a 16-chlorolactam with the N4 nitrogen atom or a direct I2 -mediated N4-C16 oxidative coupling from the enolate of geissoschizine.
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Affiliation(s)
- Maxime Jarret
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
| | - Aurélien Tap
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
| | - Erwan Poupon
- Pharmacognosie et chimie des substances naturelles, BioCIS, Univ. Paris-Sud, Université Paris-Saclay, CNRS, 92290, Châtenay-Malabry, France
| | - Laurent Evanno
- Pharmacognosie et chimie des substances naturelles, BioCIS, Univ. Paris-Sud, Université Paris-Saclay, CNRS, 92290, Châtenay-Malabry, France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
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