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Soysal EN, Fındık V, Dedeoglu B, Aviyente V, Tantillo DJ. Theoretical Investigation of the Biogenetic Pathway for Formation of Antibacterial Indole Alkaloids from Voacanga africana. ACS OMEGA 2022; 7:31591-31596. [PMID: 36092585 PMCID: PMC9453972 DOI: 10.1021/acsomega.2c04591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
The energetic viability of the previously proposed biogenetic pathway for the formation of two unique monoterpenoid indole alkaloids, voacafricine A and B, which are present in the fruits of Voacanga africana, was investigated using density functional theory computations. The results of these calculations indicate that not only is the previously suggested pathway not energetically viable but also that an alternative biosynthetic precursor is likely.
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Affiliation(s)
- Esra N. Soysal
- School
of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, United Kingdom
- Department
of Chemistry, University of California-Davis, Davis, California 95616, United States
| | - Volkan Fındık
- Université
de Lorraine, CNRS, LPCT, Nancy F54000, France
- Department
of Chemistry, Faculty of Arts and Sciences, Marmara University, Istanbul 34722, Turkey
| | - Burcu Dedeoglu
- Department
of Chemistry, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey
| | - Viktorya Aviyente
- Department
of Chemistry, Bogazici University, Bebek 34342 Istanbul, Turkey
| | - Dean J. Tantillo
- Department
of Chemistry, University of California-Davis, Davis, California 95616, United States
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2
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Serna AV, Kürti L, Siitonen JH. Synthesis of (±)‐Setigerumine I: Biosynthetic Origins of the Elusive Racemic
Papaveraceae
Isoxazolidine Alkaloids**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ana V. Serna
- Department of Chemistry Rice University 6500 Main Street Houston TX 77030 USA
| | - László Kürti
- Department of Chemistry Rice University 6500 Main Street Houston TX 77030 USA
| | - Juha H. Siitonen
- Department of Chemistry Rice University 6500 Main Street Houston TX 77030 USA
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3
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Serna AV, Kürti L, Siitonen JH. Synthesis of (±)-Setigerumine I: Biosynthetic Origins of the Elusive Racemic Papaveraceae Isoxazolidine Alkaloids*. Angew Chem Int Ed Engl 2021; 60:27236-27240. [PMID: 34706137 DOI: 10.1002/anie.202111049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Indexed: 11/09/2022]
Abstract
The biosynthetic origins of the structurally related racemic isoxazolidine Papaveraceae alkaloids Setigerumine I, Dactylicapnosinine and Dactylicapnosine have remained elusive since their original isolation over two decades ago. Herein we report the first biosynthetic hypothesis for their formation and, inspired by it, the first synthesis of (±)-Setigerumine I with accompanying computational rationale. Based on the results, these isoxazolidine alkaloids arise from racemizing oxidative rearrangements of prominent isoquinoline alkaloids Noscapine and Hydrastine. The key steps featured in this synthesis are a room temperature Cope elimination and a domino oxidation/inverse-electron demand 1,3-dipolar cycloaddition of an axially chiral, yet configurationally unstable, intermediate. The work opens this previously inaccessible family of natural products for biological studies.
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Affiliation(s)
- Ana V Serna
- Department of Chemistry, Rice University, 6500 Main Street, Houston, TX, 77030, USA
| | - László Kürti
- Department of Chemistry, Rice University, 6500 Main Street, Houston, TX, 77030, USA
| | - Juha H Siitonen
- Department of Chemistry, Rice University, 6500 Main Street, Houston, TX, 77030, USA
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4
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Breugst M, Reissig H. The Huisgen Reaction: Milestones of the 1,3-Dipolar Cycloaddition. Angew Chem Int Ed Engl 2020; 59:12293-12307. [PMID: 32255543 PMCID: PMC7383714 DOI: 10.1002/anie.202003115] [Citation(s) in RCA: 236] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Indexed: 12/21/2022]
Abstract
The concept of 1,3-dipolar cycloadditions was presented by Rolf Huisgen 60 years ago. Previously unknown reactive intermediates, for example azomethine ylides, were introduced to organic chemistry and the (3+2) cycloadditions of 1,3-dipoles to multiple-bond systems (Huisgen reaction) developed into one of the most versatile synthetic methods in heterocyclic chemistry. In this Review, we present the history of this research area, highlight important older reports, and describe the evolution and further development of the concept. The most important mechanistic and synthetic results are discussed. Quantum-mechanical calculations support the concerted mechanism always favored by R. Huisgen; however, in extreme cases intermediates may be involved. The impact of 1,3-dipolar cycloadditions on the click chemistry concept of K. B. Sharpless will also be discussed.
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Affiliation(s)
- Martin Breugst
- Department für ChemieUniversität zu KölnGreinstrasse 450939KölnGermany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
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5
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Breugst M, Reißig H. Die Huisgen‐Reaktion: Meilensteine der 1,3‐dipolaren Cycloaddition. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003115] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Martin Breugst
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Hans‐Ulrich Reißig
- Institut für Chemie und Biochemie Freie Universität Berlin Takustr. 3 14195 Berlin Deutschland
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6
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Tantillo DJ. Interrogating chemical mechanisms in natural products biosynthesis using quantum chemical calculations. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2020. [DOI: 10.1002/wcms.1453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dean J. Tantillo
- Department of Chemistry University of California–Davis Davis California
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7
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Kim WG, Baek SY, Jeong SY, Nam D, Jeon JH, Choe W, Baik MH, Hong SY. Chemo- and regioselective click reactions through nickel-catalyzed azide–alkyne cycloaddition. Org Biomol Chem 2020; 18:3374-3381. [DOI: 10.1039/d0ob00579g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nickel-catalyzed [3 + 2] cycloaddition reactions of unsymmetrical alkynes and organic azides afford substituted 1,2,3-triazoles with high levels of chemo- and regioselectivity.
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Affiliation(s)
- Woo Gyum Kim
- School of Energy and Chemical Engineering
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Republic of Korea
| | - Seung-yeol Baek
- Department of Chemistry
- Korea Advanced Institute of Science and Technology
- Daejeon 34141
- Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Seo Yeong Jeong
- School of Energy and Chemical Engineering
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Republic of Korea
| | - Dongsik Nam
- Department of Chemistry
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Republic of Korea
| | - Ji Hwan Jeon
- School of Energy and Chemical Engineering
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Republic of Korea
| | - Wonyoung Choe
- Department of Chemistry
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Republic of Korea
| | - Mu-Hyun Baik
- Department of Chemistry
- Korea Advanced Institute of Science and Technology
- Daejeon 34141
- Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations
| | - Sung You Hong
- School of Energy and Chemical Engineering
- Ulsan National Institute of Science and Technology
- Ulsan 44919
- Republic of Korea
- Department of Chemistry
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8
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Rivilla I, Odriozola-Gimeno M, Aires A, Gimeno A, Jiménez-Barbero J, Torrent-Sucarrat M, Cortajarena AL, Cossío FP. Discovering Biomolecules with Huisgenase Activity: Designed Repeat Proteins as Biocatalysts for (3 + 2) Cycloadditions. J Am Chem Soc 2019; 142:762-776. [DOI: 10.1021/jacs.9b06823] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Iván Rivilla
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
| | - Mikel Odriozola-Gimeno
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
| | - Antonio Aires
- Parque Tecnológico de San Sebastián, CIC biomaGUNE, Paseo Miramón 182, 20014 Donostia/San Sebastián, Spain
| | - Ana Gimeno
- Molecular Recognition & Host−Pathogen Interactions Unit, CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
| | - Jesús Jiménez-Barbero
- Molecular Recognition & Host−Pathogen Interactions Unit, CIC bioGUNE, Bizkaia Technology Park, Building 801A, 48170 Derio, Spain
- Department of Organic Chemistry II, Faculty of Science & Technology, University of the Basque Country, Leioa 48940, Bizkaia, Spain
- Ikerbasque, Basque Foundation for Science, Ma Diaz de Haro 3, Bilbao 48013, Spain
| | - Miquel Torrent-Sucarrat
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, Ma Diaz de Haro 3, Bilbao 48013, Spain
| | - Aitziber L. Cortajarena
- Parque Tecnológico de San Sebastián, CIC biomaGUNE, Paseo Miramón 182, 20014 Donostia/San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, Ma Diaz de Haro 3, Bilbao 48013, Spain
| | - Fernando P. Cossío
- Department of Organic Chemistry I, Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC), P° Manuel Lardizabal 3, E-20018 Donostia/San Sebastián, Spain
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9
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Huang T, Wang Q, Kong D, Wu M. Diastereoselective catalyst-free construction of isoxazolidine-cis-fused phospha dihydrocoumarins via an intramolecular Nitrone–Vinylphosphonate dipolar cycloaddition. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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10
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Sato H, Saito K, Yamazaki M. Acceleration of Mechanistic Investigation of Plant Secondary Metabolism Based on Computational Chemistry. FRONTIERS IN PLANT SCIENCE 2019; 10:802. [PMID: 31293608 PMCID: PMC6606707 DOI: 10.3389/fpls.2019.00802] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 06/04/2019] [Indexed: 05/04/2023]
Abstract
This review describes the application of computational chemistry to plant secondary metabolism, focusing on the biosynthetic mechanisms of terpene/terpenoid, alkaloid, flavonoid, and lignin as representative examples. Through these biosynthetic studies, we exhibit several computational methods, including density functional theory (DFT) calculations, theozyme calculation, docking simulation, molecular dynamics (MD) simulation, and quantum mechanics/molecular mechanics (QM/MM) calculation. This review demonstrates how modern computational chemistry can be employed as an effective tool for revealing biosynthetic mechanisms and the potential of computational chemistry-for example, elucidating how enzymes regulate regio- and stereoselectivity, finding the key catalytic residue of an enzyme, and assessing the viability of hypothetical pathways. Furthermore, insights for the next research objective involving application of computational chemistry to plant secondary metabolism are provided herein. This review will be helpful for plant scientists who are not well versed with computational chemistry.
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Affiliation(s)
- Hajime Sato
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
- Center for Sustainable Resource Science, Advanced Elements Chemistry Laboratory, Cluster for Pioneering Research (CPR), RIKEN, Saitama, Japan
| | - Kazuki Saito
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Mami Yamazaki
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
- *Correspondence: Mami Yamazaki,
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11
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Domingo LR, Ríos-Gutiérrez M, Pérez P. A Molecular Electron Density Theory Study of the Reactivity and Selectivities in [3 + 2] Cycloaddition Reactions of C,N-Dialkyl Nitrones with Ethylene Derivatives. J Org Chem 2018; 83:2182-2197. [PMID: 29350934 DOI: 10.1021/acs.joc.7b03093] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The zw-type [3 + 2] cycloaddition (32CA) reactions of C,N-dialkyl nitrones with a series of ethylenes of increased electrophilic character have been studied within the Molecular Electron Density Theory (MEDT) at the MPWB1K/6-311G(d,p) computational level. Both, reactivity and selectivities are rationalized depending on the polar character of the reaction. Due to the strong nucleophilic character of C,N-dialkyl nitrones, the corresponding zw-type 32CA reactions are accelerated with the increased electrophilic character of the ethylene, which also plays a crucial role in the reaction mechanism, thus determining the regio- and stereoselectivities experimentally observed. While, in the 32CA reactions with nucleophilic ethylenes, the reaction begins with the formation of the C-C single bond, determining the ortho regioselectivity, in the 32CA reactions with strong electrophilic ethylenes, the reaction begins with the formation of the C-O single bond involving the β-conjugated carbon of the ethylene, determining the meta regioselectivity. The present MEDT study also provides an explanation for the unexpected ortho regioselectivity experimentally found in the 32CA reactions involving weak electrophilic ethylenes such as ethyl acrylate and acrylonitrile.
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Affiliation(s)
- Luis R Domingo
- Department of Organic Chemistry, University of Valencia , Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain
| | - Mar Ríos-Gutiérrez
- Department of Organic Chemistry, University of Valencia , Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain
| | - Patricia Pérez
- Universidad Andres Bello , Facultad de Ciencias Exactas, Departamento de Ciencias Químicas, Av. República 498, 8370146, Santiago, Chile
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12
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Hughes JM, Gleason JL. A bio-inspired cascade and a late-stage directed sp3 C H lithiation enables a concise total synthesis of (−)-virosaine A. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Li Y, Xie F, Liu Y, Yang X, Li X. Regio- and Diastereoselective Access to Fused Isoxazolidines via Ru(II)-Catalyzed C–H Activation of Nitrones and Coupling with Perfluoroalkylolefins. Org Lett 2018; 20:437-440. [DOI: 10.1021/acs.orglett.7b03775] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yunyun Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Xie
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yuan Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xifa Yang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xingwei Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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14
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Rivilla I, de Cózar A, Schäfer T, Hernandez FJ, Bittner AM, Eleta-Lopez A, Aboudzadeh A, Santos JI, Miranda JI, Cossío FP. Catalysis of a 1,3-dipolar reaction by distorted DNA incorporating a heterobimetallic platinum(ii) and copper(ii) complex. Chem Sci 2017; 8:7038-7046. [PMID: 29147531 PMCID: PMC5637124 DOI: 10.1039/c7sc02311a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 08/11/2017] [Indexed: 12/28/2022] Open
Abstract
A novel catalytic system based on covalently modified DNA is described. This catalyst promotes 1,3-dipolar reactions between azomethine ylides and maleimides. The catalytic system is based on the distortion of the double helix of DNA by means of the formation of Pt(ii) adducts with guanine units. This distortion, similar to that generated in the interaction of DNA with platinum chemotherapeutic drugs, generates active sites that can accommodate N-metallated azomethine ylides. The proposed reaction mechanism, based on QM(DFT)/MM calculations, is compatible with thermally allowed concerted (but asynchronous) [π4s + π2s] mechanisms leading to the exclusive formation of racemic endo-cycloadducts.
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Affiliation(s)
- Iván Rivilla
- Department of Organic Chemistry I , Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Donostia International Physics Center (DIPC) , Po Manuel Lardizabal 3 , E-20018 Donostia/San Sebastián , Spain .
| | - Abel de Cózar
- Department of Organic Chemistry I , Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Donostia International Physics Center (DIPC) , Po Manuel Lardizabal 3 , E-20018 Donostia/San Sebastián , Spain .
- Ikerbasque, Basque Foundation for Science , Ma Díaz de Haro 3 , E-48013 Bilbao , Spain
| | - Thomas Schäfer
- Ikerbasque, Basque Foundation for Science , Ma Díaz de Haro 3 , E-48013 Bilbao , Spain
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - Frank J Hernandez
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - Alexander M Bittner
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
- CIC NanoGUNE , Consolider. Tolosa Hiribidea, 76 , E-200018 Donostia/San Sebastián , Spain
| | - Aitziber Eleta-Lopez
- CIC NanoGUNE , Consolider. Tolosa Hiribidea, 76 , E-200018 Donostia/San Sebastián , Spain
| | - Ali Aboudzadeh
- NanoBioSeparations Group , POLYMAT University of the Basque Country (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - José I Santos
- SGIker NMR Facility , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - José I Miranda
- SGIker NMR Facility , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Avda. Tolosa 72 , E-20018 Donostia/San Sebastián , Spain
| | - Fernando P Cossío
- Department of Organic Chemistry I , Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) , Donostia International Physics Center (DIPC) , Po Manuel Lardizabal 3 , E-20018 Donostia/San Sebastián , Spain .
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15
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Hughes JME, Gleason JL. A Concise Enantioselective Total Synthesis of (−)-Virosaine A. Angew Chem Int Ed Engl 2017; 56:10830-10834. [DOI: 10.1002/anie.201706273] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Jonathan M. E. Hughes
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
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16
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Hughes JME, Gleason JL. A Concise Enantioselective Total Synthesis of (−)-Virosaine A. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706273] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jonathan M. E. Hughes
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
| | - James L. Gleason
- Department of Chemistry; McGill University; 801 Sherbrooke W. Montreal QC H3A 0B8 Canada
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17
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Hong AY, Vanderwal CD. A Sequential Cycloaddition Strategy for the Synthesis of Alsmaphorazine B Traces a Path Through a Family of Alstonia Alkaloids. Tetrahedron 2017; 73:4160-4171. [PMID: 28943664 PMCID: PMC5603193 DOI: 10.1016/j.tet.2016.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Driven by a new biogenetic hypothesis, the first total synthesis of alsmaphorazine B and several related indole alkaloids has been achieved. Numerous early approaches proved unsuccessful owing to unproductive side reactivity; nevertheless, they provided important clues that guided the evolution of our strategy. Critical to our success was a major improvement in our Zincke aldehyde cycloaddition strategy, which permitted the efficient gram-scale synthesis of akuammicine. The sequential chemoselective oxidations of akuammicine leading up to the key oxidative rearrangement also yielded several biogenetically related indole alkaloids en route to alsmaphorazine B.
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Affiliation(s)
- Allen Y. Hong
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
| | - Christopher D. Vanderwal
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
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18
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Biogenesis of Triterpene Dimers from Orthoquinones Related to Quinonemethides: Theoretical Study on the Reaction Mechanism. Molecules 2016; 21:molecules21111551. [PMID: 27869690 PMCID: PMC6273858 DOI: 10.3390/molecules21111551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 11/07/2016] [Accepted: 11/11/2016] [Indexed: 12/02/2022] Open
Abstract
The biogenetic origin of triterpene dimers from the Celastraceae family has been proposed as assisted hetero-Diels-Alder reaction (HDA). In this work, computational calculation of HDA between natural quinonemethides (tingenone and isopristimerol) and hypothetical orthoquinones has been performed at the M06-2X/6-31G(d) level of theory. We have located all the HDA transition states supporting the biogenetic route via HDA cycloadditions. We found that all reactions take place through a concerted inverse electron demand and asynchronous mechanism. The enzymatic assistance for dimer formation was analyzed in terms of the calculated transition state energy barrier.
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Tun-Rosado FJ, Mena-Rejón GJ, Carballo RM, Mirón-López G, Quijano-Quiñones RF. Chrysophanol anthrone: a theoretical study on the potential energy surface. MOLECULAR SIMULATION 2016. [DOI: 10.1080/08927022.2016.1200040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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21
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Baunach M, Hertweck C. Natural 1,3-Dipolar Cycloadditions. Angew Chem Int Ed Engl 2015; 54:12550-2. [DOI: 10.1002/anie.201507120] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Indexed: 01/06/2023]
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Hong AY, Vanderwal CD. A synthesis of alsmaphorazine B demonstrates the chemical feasibility of a new biogenetic hypothesis. J Am Chem Soc 2015; 137:7306-9. [PMID: 26034815 PMCID: PMC4477012 DOI: 10.1021/jacs.5b04686] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An N-oxide fragmentation/hydroxylamine oxidation/intramolecular 1,3-dipolar cycloaddition cascade efficiently converted an oxidized congener of akuammicine into the complex, hexacyclic architecture of the alsmaphorazine alkaloids. This dramatic structural change shows the chemical feasibility of our novel proposal for alsmaphorazine biogenesis. Critical to these endeavors was a marked improvement in our previously reported Zincke aldehyde cycloaddition approach to indole alkaloids, which permitted the gram-scale synthesis of akuammicine. The chemoselective oxidations of akuammicine leading up to the key rearrangement also generated several biogenetically related alkaloids of the alstolucine and alpneumine families.
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Affiliation(s)
- Allen Y. Hong
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Christopher D. Vanderwal
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
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Strych S, Journot G, Pemberton RP, Wang SC, Tantillo DJ, Trauner D. Biomimetische Totalsynthese von Santalin Y. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411350] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Strych S, Journot G, Pemberton RP, Wang SC, Tantillo DJ, Trauner D. Biomimetic Total Synthesis of Santalin Y. Angew Chem Int Ed Engl 2015; 54:5079-83. [DOI: 10.1002/anie.201411350] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 03/06/2015] [Indexed: 11/11/2022]
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Chirkin E, Atkatlian W, Porée FH. The Securinega Alkaloids. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 2015; 74:1-120. [DOI: 10.1016/bs.alkal.2014.11.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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