1
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Abstract
The furanocembranoid providencin remains an unconquered bastion, although the synthesis of 17-deoxyprovidencin─lacking a single -OH group─has been accomplished in the past. This paper describes a practical approach to a properly hydroxylated building block via an iridium-catalyzed photosensitized intramolecular [2 + 2] cycloaddition as the key step. While an attempt to convert this compound into providencin via RCAM failed, it might well be elaborated into the natural product by adopting the literature route.
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Affiliation(s)
- Simon M Spohr
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
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2
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Hoff O, Kratena N, Aynetdinova D, Christensen KE, Donohoe TJ. A Vicinal Diol Approach for the Total Synthesis of Molestin E, ent-Sinulacembranolide A and ent-Sinumaximol A. Chemistry 2022; 28:e202202464. [PMID: 35946550 PMCID: PMC9826425 DOI: 10.1002/chem.202202464] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Indexed: 01/11/2023]
Abstract
In this work an approach for the synthesis of furanocembranoid natural products containing the C-7,8-diol moiety is disclosed. This culminated in the first total synthesis of the natural product molestin E, together with ent-sinulacembranolide A and ent-sinumaximol A as well as a thorough exploration of their chemistry. Late-stage ring-closure of the C-7,8-diols to the corresponding epoxides was also demonstrated. Key features of this synthetic strategy include a stereoselective Baylis-Hillman reaction, ring-closing metathesis and Shiina macrolactonisation. Chiral-pool materials were deployed to ensure the desired absolute stereochemistry which was confirmed by late-stage single crystal X-ray diffraction.
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Affiliation(s)
- Oskar Hoff
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Nicolas Kratena
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Daniya Aynetdinova
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Kirsten E. Christensen
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Timothy J. Donohoe
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
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3
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Tuccinardi J, Wood JL. Total Syntheses of (+)-Ineleganolide and (-)-Sinulochmodin C. J Am Chem Soc 2022; 144:20539-20547. [PMID: 36283051 PMCID: PMC9651135 DOI: 10.1021/jacs.2c09826] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Indexed: 11/29/2022]
Abstract
Described herein are the first total syntheses of the nor-furanocembranoid natural products (+)-ineleganolide (1) and (-)-sinulochmodin C (2). The synthetic strategy is predicated on a transannular Michael reaction that provides both natural products from a common macrocyclic intermediate and leverages a diastereoselective radical cyclization to furnish a key bicyclic lactone. The latter is further advanced to a macrocyclic precursor via a Nozaki-Hiyama-Kishi cyclization and a one-pot furan oxidation/oxa-Michael cascade. Unexpected stereochemical nuances that guided the evolution and eventual completion of the total synthesis are discussed.
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Affiliation(s)
- Joseph
P. Tuccinardi
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - John L. Wood
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
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4
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Shi Q, Chen Y, Cao T, Zhu S. Construction of [2,5]-Furanophanes by Carbene-Mediated Alkynyl Migration Cyclization. Org Lett 2022; 24:8142-8146. [DOI: 10.1021/acs.orglett.2c03185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiu Shi
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Yang Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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5
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Schmidt EY, Trofimov BA. Acetylene in Organic Synthesis. From the Chaos of Small Molecules to Highly Organized Structures. A Review. DOKLADY CHEMISTRY 2022. [DOI: 10.1134/s0012500822700069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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6
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Gramani SG, Sriramula RK, Sekar K, Yang EG, Battu P, Kopecky A, Lear MJ. Cis Selective RCM Study to the 14-Membered Cyclic Subunit of Bielschowskysin. J Org Chem 2021; 86:6160-6168. [PMID: 33908786 DOI: 10.1021/acs.joc.0c02984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A concise, (Z)-selective ring-closing metathesis (RCM) route to the 14-membered carbocycle of bielschowskysin is detailed using naturally occurring chiral starting materials. Unproductive RCM substrates were attributed to alkyne chelation of the ruthenium catalyst and steric disadvantages within the cembranoid precursors, which was eventually circumvented by using cyclic diol benzylidene protection involving a C8-quaternary carbinol center.
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Affiliation(s)
- Subramanian G Gramani
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.,Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Ravi K Sriramula
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Karthik Sekar
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Eugene G Yang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Praveena Battu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Aïcha Kopecky
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
| | - Martin J Lear
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore.,School of Chemistry, University of Lincoln, Brayford Pool, Lincoln LN6 7TS, U.K
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7
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A new approach towards the synthesis of bielschowskysin: Synthesis and photochemistry of an advanced macrocyclic enedione intermediate. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Bhuiyan NH, Varney ML, Bhattacharya DS, Payne WM, Mohs AM, Holstein SA, Wiemer DF. ω-Hydroxy isoprenoid bisphosphonates as linkable GGDPS inhibitors. Bioorg Med Chem Lett 2019; 29:126633. [PMID: 31474482 DOI: 10.1016/j.bmcl.2019.126633] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 08/20/2019] [Indexed: 02/08/2023]
Abstract
The enzyme geranylgeranyl diphosphate synthase (GGDPS) is a potential therapeutic target for multiple myeloma. Malignant plasma cells produce and secrete large amounts of monoclonal protein, and inhibition of GGDPS results in disruption of protein geranylgeranylation which in turn impairs intracellular protein trafficking. Our previous work has demonstrated that some isoprenoid triazole bisphosphonates are potent and selective inhibitors of GGDPS. To explore the possibility of selective delivery of such compounds to plasma cells, new analogues with an ω-hydroxy group have been synthesized and examined for their enzymatic and cellular activity. These studies demonstrate that incorporation of the ω-hydroxy group minimally impairs GGDPS inhibitory activity. Furthermore conjugation of one of the novel ω-hydroxy GGDPS inhibitors to hyaluronic acid resulted in enhanced cellular activity. These results will allow future studies to focus on the in vivo biodistribution of HA-conjugated GGDPS inhibitors.
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Affiliation(s)
- Nazmul H Bhuiyan
- Department of Chemistry, University of Iowa, Iowa City, IA 52242-1294, United States
| | - Michelle L Varney
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Deep S Bhattacharya
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - William M Payne
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Aaron M Mohs
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198, United States; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, United States; Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Sarah A Holstein
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States; Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - David F Wiemer
- Department of Chemistry, University of Iowa, Iowa City, IA 52242-1294, United States; Department of Pharmacology, University of Iowa, Iowa City, IA 52242-1109, United States.
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9
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Zheng K, Hong R. Stereoconfining macrocyclizations in the total synthesis of natural products. Nat Prod Rep 2019; 36:1546-1575. [DOI: 10.1039/c8np00094h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This review covers selected examples of point chirality-forming macrocyclizations in natural product total synthesis in the past three decades.
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Affiliation(s)
- Kuan Zheng
- Key Laboratory of Synthetic Chemistry of Natural Substances
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Ran Hong
- Key Laboratory of Synthetic Chemistry of Natural Substances
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
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10
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McAulay K, Clark JS. Total Synthesis of 7-epi
-Pukalide and 7-Acetylsinumaximol B. Chemistry 2017; 23:9761-9765. [DOI: 10.1002/chem.201702591] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Kirsten McAulay
- WestCHEM; School of Chemistry, Joseph Black Building, University of Glasgow; University Avenue Glasgow G12 8QQ UK
| | - J. Stephen Clark
- WestCHEM; School of Chemistry, Joseph Black Building, University of Glasgow; University Avenue Glasgow G12 8QQ UK
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11
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Trofimov BA, Bidusenko IA, Schmidt EY, Ushakov IA, Vashchenko AV. Acetylene as a Driving and Organizing Molecule in One-Pot Transition-Metal-Free Synthesis of Furans using Chalcones and their Analogues. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Boris A. Trofimov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch; Russian Academy of Sciences; 1 Favorsky Str. 664033 Irkutsk Russia
| | - Ivan A. Bidusenko
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch; Russian Academy of Sciences; 1 Favorsky Str. 664033 Irkutsk Russia
| | - Elena Yu. Schmidt
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch; Russian Academy of Sciences; 1 Favorsky Str. 664033 Irkutsk Russia
| | - Igor' A. Ushakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch; Russian Academy of Sciences; 1 Favorsky Str. 664033 Irkutsk Russia
| | - Alexander V. Vashchenko
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch; Russian Academy of Sciences; 1 Favorsky Str. 664033 Irkutsk Russia
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12
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Ganss S, Breit B. Enantioselective Rhodium-Catalyzed Atom-Economical Macrolactonization. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604301] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Stephanie Ganss
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
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13
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Ganss S, Breit B. Enantioselective Rhodium-Catalyzed Atom-Economical Macrolactonization. Angew Chem Int Ed Engl 2016; 55:9738-42. [DOI: 10.1002/anie.201604301] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Stephanie Ganss
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
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14
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Artem’ev AV, Gusarova NK, Sutyrina AO, Gatilov YV, Trofimov BA. Synthesis of tris[2-(2-furyl)ethyl]phosphine its chalcogenides and Pdii complex. MENDELEEV COMMUNICATIONS 2016. [DOI: 10.1016/j.mencom.2016.07.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Choe H, Pham TT, Lee JY, Latif M, Park H, Kang YK, Lee J. Remote Stereoinductive Intramolecular Nitrile Oxide Cycloaddition: Asymmetric Total Synthesis and Structure Revision of (-)-11β-Hydroxycurvularin. J Org Chem 2016; 81:2612-7. [PMID: 26894643 DOI: 10.1021/acs.joc.5b02760] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The first total synthesis and structure revision of (-)-11β-hydroxycurvularin (1b), a macrolide possessing a β-hydroxyketone moiety, were accomplished. The β-hydroxyketone moiety in this natural product was introduced by cleavage of the N-O bond in an isoxazoline ring that was formed diastereoselectively in a 1,5-remote stereocontrolled fashion by employing intramolecular nitrile oxide cycloaddition.
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Affiliation(s)
- Hyeonjeong Choe
- Drug Discovery Division, Korea Research Institute of Chemical Technology , Yuseong, Daejeon 34114, Republic of Korea
| | - Thuy Trang Pham
- College of Pharmacy, Kangwon National University , 1 Kangwondaehak-gil, Chuncheon, Gangwon-do 24341, Republic of Korea
| | - Joo Yun Lee
- Drug Discovery Division, Korea Research Institute of Chemical Technology , Yuseong, Daejeon 34114, Republic of Korea
| | - Muhammad Latif
- Drug Discovery Division, Korea Research Institute of Chemical Technology , Yuseong, Daejeon 34114, Republic of Korea
| | - Haeil Park
- College of Pharmacy, Kangwon National University , 1 Kangwondaehak-gil, Chuncheon, Gangwon-do 24341, Republic of Korea
| | - Young Kee Kang
- Department of Chemistry, Chungbuk National University , 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Republic of Korea
| | - Jongkook Lee
- College of Pharmacy, Kangwon National University , 1 Kangwondaehak-gil, Chuncheon, Gangwon-do 24341, Republic of Korea
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16
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Affiliation(s)
- Xin-Yue Shen
- Department
of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Xiao-Shui Peng
- Department
of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- Shenzhen
Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic
Molecules, Shenzhen Research Institute, The Chinese University of Hong Kong, No. 10, Second Yuexing Road, Shenzhen 518507, China
| | - Henry N. C. Wong
- Department
of Chemistry, and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- Shenzhen
Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic
Molecules, Shenzhen Research Institute, The Chinese University of Hong Kong, No. 10, Second Yuexing Road, Shenzhen 518507, China
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17
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Schmidt EY, Bidusenko IA, Cherimichkina NA, Ushakov IA, Borodina TN, Smirnov VI, Trofimov BA. Furans Conjugated with Bulky Aromatic Systems: One‐Pot Synthesis from Ketones and Acetylene. Chemistry 2015; 21:15944-6. [DOI: 10.1002/chem.201503256] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Elena Yu Schmidt
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, (Russia)
| | - Ivan A. Bidusenko
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, (Russia)
| | - Natalia A. Cherimichkina
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, (Russia)
| | - Igor A. Ushakov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, (Russia)
| | - Tatyana N. Borodina
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, (Russia)
| | - Vladimir I. Smirnov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, (Russia)
| | - Boris A. Trofimov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1 Favorsky Str., 664033 Irkutsk, (Russia)
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18
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Palframan MJ, Pattenden G. The versatility of furfuryl alcohols and furanoxonium ions in synthesis. Chem Commun (Camb) 2015; 50:7223-42. [PMID: 24728307 DOI: 10.1039/c4cc01196a] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Substituted furfuryl alcohols are extraordinarily versatile starting materials in synthesis. They are precursors to furanoxonium ion intermediates which are implicated in the Piancatelli reaction (leading to 2-cyclopentenones) and in the synthesis of novel dihydrofuran-based exo enol ether/cyclic ketal natural products. They are also intermediates in a recently discovered (4+3) cycloaddition reaction with 1,3-dienes leading to furan ring-fused cycloheptenes. Here we provide a perspective on recent developments in these areas of synthesis, alongside recent applications of the Achmatowicz reaction and [5+2] cycloaddition reactions of the resulting oxidopyrylium ions.
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19
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Zhao YM, Maimone TJ. Short, enantioselective total synthesis of chatancin. Angew Chem Int Ed Engl 2015; 54:1223-6. [PMID: 25470723 PMCID: PMC4300267 DOI: 10.1002/anie.201410443] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Indexed: 11/06/2022]
Abstract
An enantioselective total synthesis of the polycyclic diterpene (+)-chatancin, a potent PAF antagonist, is reported. Proceeding in seven steps from dihydrofarnesal, this synthetic route was designed to circumvent macrocyclization-based strategies to complex, cyclized cembranoids. The described synthesis requires only six chromatographic purifications, is high yielding, and avoids protecting-group manipulations. An X-ray crystal structure of this fragile marine natural product was obtained.
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Affiliation(s)
- Yu-Ming Zhao
- Department of Chemistry, University of California, Berkeley, 826 Latimer Hall, Berkeley, CA 94720 (USA)
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20
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21
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Vasamsetty L, Khan FA, Mehta G. A model approach towards the polycyclic framework present in cembranoid natural products dissectolide A, plumarellide and mandapamate. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.141] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Boukouvalas J, Jean MA. Streamlined biomimetic synthesis of paracaseolide A via aerobic oxidation of a 2-silyloxyfuran. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.054] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Lv L, Shen B, Li Z. Total Synthesis of (±)-Clavilactones A, B, and Proposed D through Iron-Catalyzed Carbonylation-Peroxidation of Olefin. Angew Chem Int Ed Engl 2014; 53:4164-7. [DOI: 10.1002/anie.201400326] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Indexed: 11/07/2022]
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24
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Lv L, Shen B, Li Z. Total Synthesis of (±)-Clavilactones A, B, and Proposed D through Iron-Catalyzed Carbonylation-Peroxidation of Olefin. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400326] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
An efficient stereoselective synthesis of furanoverrillin (5), a highly functionalized core of verrillin (1), is reported. The synthetic strategy is based on constructing bicyclic lactone 17 prior to the 10-membered ring macrocyclization. The effect of the C4 methyl group on the furan reactivity is also discussed.
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Affiliation(s)
- Alec Saitman
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC: 0358, La Jolla, California 92093-0358, United States
| | - Emmanuel A. Theodorakis
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC: 0358, La Jolla, California 92093-0358, United States
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Saitman A, Sullivan SDE, Theodorakis EA. A strategy toward the synthesis of C 13-oxidized cembrenolides. Tetrahedron Lett 2013; 54:1612-1615. [PMID: 23626379 DOI: 10.1016/j.tetlet.2013.01.085] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient strategy for the construction of C13-oxidized cembrenolides is reported. Central to this strategy is the installation of the C13 hydroxyl group prior to cembrane macrocyclization (via formation of the C1-C2 bond), allowing access to both C13 alcohol epimers. The orientation of the C13 alcohol was found to influence the cyclization mode of the cembranolide scaffold upon furan oxidation, leading to motifs reminiscent to bipinnatolide F, bielschowskysin, and verrillin.
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Affiliation(s)
- Alec Saitman
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0358, United States
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27
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Yadav JS, Sengupta S. The Formal Total Synthesis of FR252921 - An Immunosuppressant. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201097] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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28
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Tan YH, Li JX, Xue FL, Qi J, Wang ZY. Concise synthesis of chiral 2(5H)-furanone derivatives possessing 1,2,3-triazole moiety via one-pot approach. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.01.092] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Saitman A, Rulliere P, Sullivan SDE, Theodorakis EA. Total synthesis of norcembrenolide B and scabrolide D. Org Lett 2011; 13:5854-7. [PMID: 21973225 DOI: 10.1021/ol202476j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient stereoselective synthesis of norcembrenolide B (8) and scabrolide D (9) is reported. The strategy is inspired by biogenetic relationships of related cembrenoids. Central to this approach is the construction of norbipinnatin J which upon selective C2 deoxygenation and C8 oxygenation produces norrubifolide and norcoralloidolide A. A sequence of site-selective oxidations and skeletal reorganizations then yields, in a divergent manner, compounds 8 and 9. The studies allow revision of the proposed structure of scabrolide D (9), which is identical to norcembrenolide C.
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Affiliation(s)
- Alec Saitman
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC: 0358, La Jolla, California 92093-0358, USA
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Chen XL, Liu HL, Li J, Xin GR, Guo YW. Paracaseolide A, First α-Alkylbutenolide Dimer with an Unusual Tetraquinane Oxa-Cage Bislactone Skeleton from Chinese Mangrove Sonneratia paracaseolaris. Org Lett 2011; 13:5032-5. [PMID: 21875121 DOI: 10.1021/ol201809q] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xue-Lian Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Hai-Li Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Guo-Rong Xin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
| | - Yue-Wei Guo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Road, 555, Shanghai 201203, China, and Institute of Biological Science, Sun Yat-Sen University, Xin Gang West Road 135, Guangzhou 510275, China
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Li Y, Pattenden G. Perspectives on the structural and biosynthetic interrelationships between oxygenated furanocembranoids and their polycyclic congeners found in corals. Nat Prod Rep 2011; 28:1269-310. [DOI: 10.1039/c1np00023c] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kimbrough T, Roethle P, Mayer P, Trauner D. Total Synthesis of Coralloidolides A, B, C, and E. Angew Chem Int Ed Engl 2010; 49:2619-21. [DOI: 10.1002/anie.200906126] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kimbrough T, Roethle P, Mayer P, Trauner D. Totalsynthese von Coralloidolid A, B, C und E. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906126] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Tang B, Bray CD, Pattenden G, Rogers J. Total synthesis of (+)-Z-deoxypukalide, a furanobutenolide-based cembranoid isolated from the pacific octocoral Leptogorgia spp. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.01.059] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tang B, Bray CD, Pattenden G. Total synthesis of (+)-intricarene using a biogenetically patterned pathway from (−)-bipinnatin J, involving a novel transannular [5+2] (1,3-dipolar) cycloaddition. Org Biomol Chem 2009; 7:4448-57. [DOI: 10.1039/b910572g] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Boukouvalas J, Loach RP. General, regiodefined access to alpha-substituted butenolides through metal-halogen exchange of 3-bromo-2-silyloxyfurans. Efficient synthesis of an anti-inflammatory gorgonian lipid. J Org Chem 2008; 73:8109-12. [PMID: 18798671 DOI: 10.1021/jo8015924] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A variety of alpha-substituted butenolides were efficiently prepared from 3-bromo-2-triisopropylsilyloxyfuran via lithium-bromine exchange and in situ quench with carbon or heteroatom electrophiles. The inherent flexibility of this methodology is illustrated by a short and efficient synthesis of an anti-inflammatory marine natural product.
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Affiliation(s)
- John Boukouvalas
- Département de Chimie, Université Laval, Quebec City, Quebec G1K 7P4, Canada.
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Donohoe T, Ironmonger A, Kershaw N. Synthesis of (−)-(Z)-Deoxypukalide. Angew Chem Int Ed Engl 2008; 47:7314-6. [DOI: 10.1002/anie.200802703] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Blunt JW, Copp BR, Hu WP, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2008; 25:35-94. [PMID: 18250897 DOI: 10.1039/b701534h] [Citation(s) in RCA: 284] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review covers the literature published in 2006 for marine natural products, with 758 citations (534 for the period January to December 2006) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, cnidaria, bryozoans, molluscs, tunicates and echinoderms. The emphasis is on new compounds (779 for 2006), together with their relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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Roethle PA, Trauner D. The chemistry of marine furanocembranoids, pseudopteranes, gersolanes, and related natural products. Nat Prod Rep 2008; 25:298-317. [DOI: 10.1039/b705660p] [Citation(s) in RCA: 157] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bulger PG, Bagal SK, Marquez R. Recent advances in biomimetic natural product synthesis. Nat Prod Rep 2008; 25:254-97. [DOI: 10.1039/b705909b] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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A biogenetically patterned synthetic approach to the unusual furan methylenecyclobutanol moiety in providencin. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.03.158] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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