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Fernandes RA, Ranjan RS. Diastereoselective allylation-based asymmetric total synthesis of 1,10- seco-guaianolides. Org Biomol Chem 2024; 22:811-822. [PMID: 38170531 DOI: 10.1039/d3ob02013d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
A Cr(II)-mediated Nozaki-Hiyama allylation of aldehydes with functionalized chiral allylbromolactone paved the way to easily access β-hydroxy-aryl/alkyl-α-methylene-γ-butyrolactones in good yields with high diastereoselectivities. A subsequent undemanding translactonization was orchestrated in the efficient first asymmetric total synthesis of two 1,10-seco-guaianolides as a valuable extension of the strategy developed.
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Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai 400076, Maharashtra, India.
| | - Ravikant S Ranjan
- Department of Chemistry, Indian Institute of Technology Bombay Powai, Mumbai 400076, Maharashtra, India.
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2
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Sreenivasulu C, Satyanarayana G. A Metal-Free Path to 2-Iodo-3-alkyl-1-arylbut-2-en-1-ones and Their Application to the Domino Synthesis of Functionalized 2 H-Pyran-2-ones. J Org Chem 2022; 87:2222-2240. [PMID: 35172573 DOI: 10.1021/acs.joc.1c03061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We report a metal-free selective synthesis of 2-iodo-3-alkyl-1-arylbut-2-en-1-ones from propargylic alcohols that is enabled by N-iodosuccinimide. A variety of substituted propargylic alcohols are amenable to delivering the selective 2-iodoenone products in very good yields. The utility of the α-iodoenone derivatives is further extended by developing an efficient, novel, and new synthetic methodology for the synthesis of 3,5,6-trisubstituted 2H-pyran-2-ones. To the best of our knowledge, this protocol is the first of its kind to accomplish 3,5,6-trisubstituted 2H-pyran-2-ones through an unprecedented domino (formation of two C-C bonds and one C-O bond) one-pot process via intermolecular Heck coupling, base-driven Michael addition, and base-mediated double bond isomerization followed by cyclo-condensation. This protocol showed good compatibility with a wide range of iodoenones (18 examples) and 2H-pyran-2-ones (42 examples). Mechanistic studies indicate that palladium is only involved in the Heck coupling; the base solely drives the rest of the steps.
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Affiliation(s)
| | - Gedu Satyanarayana
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi 502 285, Telangana, India
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3
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Liu W, Winssinger N. Synthesis of α-exo-Methylene-γ-butyrolactones: Recent Developments and Applications in Natural Product Synthesis. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1577-6085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThe α-exo-methylene-γ-butyrolactone moiety is present in a vast array of structurally diverse natural products and is often central to their biological activity. In this short review, we summarize new approaches to α-exo-methylene-γ-butyrolactones developed over the past decade as well as their applications in total synthesis.1 Introduction2 Approaches to α-exo-Methylene-γ-butyrolactones2.1 Enantioselective Synthesis via Lactonization Approaches2.2 Enantioselective Halolactonizations2.3 Enantioselective Barbier-Type Allylation2.4 C–H Insertion/Olefination Sequences2.5 Alkene Cyclization2.6 Strain-Driven Dyotropic Rearrangement3 β-(Hydroxymethylalkyl)-α-exo-methylene-γ-butyrolactones4 Applications in Total Synthesis4.1 Sesquiterpene Lactones4.2 Lignans4.3 Other Monocyclic Natural Products4.4 Choice of Methodology in Recent Total Syntheses5 Summary and Outlook
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Liu W, Yu Z, Winssinger N. Total Syntheses of Paraconic Acids and 1,10- seco-Guaianolides via a Barbier Allylation/Translactonization Cascade of 3-(Bromomethyl)-2(5 H)-furanone. Org Lett 2021; 23:969-973. [PMID: 33502871 DOI: 10.1021/acs.orglett.0c04165] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed Barbier allylation/translactonization cascade reaction was established for the rapid construction of β,γ-disubstituted α-exo-methylene-γ-butyrolactone, an important motif in sesquiterpenes. Dimethyl zinc played significant roles in both steps for the umpolung of π-allylpalladium as a nucleophile and promoting a Lewis acid-mediated translactonization. This sequence showed a broad substrate scope and was further harnessed for the synthesis of two paraconic acids as well as the first protecting-group-free total synthesis of two 1,10-seco-guaianolides.
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Affiliation(s)
- Weilong Liu
- Department of Organic Chemistry, NCCR Chemical Biology, Faculty of Science, University of Geneva, 1205 Geneva, Switzerland
| | - Zhimei Yu
- Department of Organic Chemistry, NCCR Chemical Biology, Faculty of Science, University of Geneva, 1205 Geneva, Switzerland
| | - Nicolas Winssinger
- Department of Organic Chemistry, NCCR Chemical Biology, Faculty of Science, University of Geneva, 1205 Geneva, Switzerland
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5
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Justaud F, Hachem A, Grée R. Recent Developments in the Meyer‐Schuster Rearrangement. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001494] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Frédéric Justaud
- Univ Rennes CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 35000 Rennes France
| | - Ali Hachem
- Lebanese University Faculty of Sciences (I) Laboratory for Medidinal Chemistry and Natural Products and PRASE-EDST Hadath Lebanon
| | - René Grée
- Univ Rennes CNRS (Institut for Chemical Sciences in Rennes), UMR 6226 35000 Rennes France
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6
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Sakurai K, Sakamoto K, Sasaki M, Fuwa H. Unified Total Synthesis of (-)-Enigmazole A and (-)-15-O-Methylenigmazole A. Chem Asian J 2020; 15:3494-3502. [PMID: 32902874 DOI: 10.1002/asia.202001015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Indexed: 12/29/2022]
Abstract
The total synthesis of cytotoxic marine phosphomacrolides, (-)-enigmazole A and (-)-15-O-methylenigmazole A, is described in detail. The 2,6-cis-substituted tetrahydropyran ring was efficiently elaborated by using a tandem olefin cross-metathesis/intramolecular oxa-Michael addition reaction. The 18-membered macrolactone skeleton was forged via a Au-catalyzed propargylic benzoate rearrangement/macrocyclic ring-closing metathesis sequence. Late-stage diversification of a common intermediate enabled unified total synthesis of (-)-enigmazole A and (-)-15-O-methylenigmazole A.
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Affiliation(s)
- Keisuke Sakurai
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Keita Sakamoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan.,Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Makoto Sasaki
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Haruhiko Fuwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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Naveen N, Ramesh G, Balamurugan R. Silver‐Catalyzed Synthesis of Enones/α‐Iodoenones from Tertiary Propargyl Alcohols. ChemistrySelect 2019. [DOI: 10.1002/slct.201903568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Naganaboina Naveen
- School of ChemistryUniversity of Hyderabad, Gachibowli Hyderabad 500046 India
| | - Golla Ramesh
- School of ChemistryUniversity of Hyderabad, Gachibowli Hyderabad 500046 India
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Ogura Y, Okada S, Mori N, Ishigami K, Watanabe H. Enantioselective Total Synthesis of (+)-Anthecularin. Org Lett 2018; 20:3888-3891. [DOI: 10.1021/acs.orglett.8b01467] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yusuke Ogura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Shoko Okada
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Naoki Mori
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ken Ishigami
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hidenori Watanabe
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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Alcaide B, Almendros P, Busto E, Luna A. Domino Meyer-Schuster/Arylation Reaction of Alkynols or Alkynyl Hydroperoxides with Diazonium Salts Promoted by Visible Light under Dual Gold and Ruthenium Catalysis. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600158] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Kutsumura N, Matsubara Y, Honjo T, Ohgiya T, Nishiyama S, Saito T. Total synthesis of (−)-5,6-seco-germacrane lactone. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Alcaide B, Almendros P, Cembellín S, Martínez del Campo T. Acid-Catalyzed Synthesis of α,β-Disubstituted Conjugated Enones by a Meyer-Schuster-Type Rearrangement in Allenols. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400928] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Abstract
This review covers the isolation, structural determination, synthesis and chemical and microbiological transformations of natural sesquiterpenoids. The literature from January to December 2012 is reviewed, and 471 references are cited.
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206-La Laguna, Tenerife, Canary Islands, Spain
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