1
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Sarkar R, Korell A, Schneider C. Organocatalytic enantioselective oxa-Piancatelli rearrangement. Chem Commun (Camb) 2024; 60:3063-3066. [PMID: 38385217 DOI: 10.1039/d4cc00708e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
The first highly enantioselective oxa-Piancatelli rearrangement has been developed. This process which is catalyzed by a chiral BINOL-derived phosphoric acid rearranges a wide range of furylcarbinols into densely substituted γ-hydroxy cyclopentenones in high yield with excellent diastereo- and enantioselectivities (up to 99 : 1 er). This reaction exhibits a high functional group tolerance and was applied to complex bioactive molecules as well. The products were further manipulated into value-added molecular scaffolds further highlighting their versatility and synthetic utility.
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Affiliation(s)
- Rahul Sarkar
- Institut für Organische Chemie, Universität Leipzig, Leipzig D-04103, Germany.
| | - Alexander Korell
- Institut für Organische Chemie, Universität Leipzig, Leipzig D-04103, Germany.
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig, Leipzig D-04103, Germany.
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2
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Godwin B, Anvari MH, Olfatbakhsh T, Mahbod M, Milani AS, DiLabio GA, Wulff JE. A Single-Atom Upgrade to Polydicyclopentadiene. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Benjamin Godwin
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
| | - Monir H. Anvari
- Department of Chemistry, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Tina Olfatbakhsh
- Materials and Manufacturing Research Institute (MMRI), University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Mahshid Mahbod
- Materials and Manufacturing Research Institute (MMRI), University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Abbas S. Milani
- Materials and Manufacturing Research Institute (MMRI), University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Gino A. DiLabio
- Department of Chemistry, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Jeremy E. Wulff
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3V6, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, British Columbia V8W 2Y2, Canada
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
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3
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Suresh A, Lal S, Namboothiri INN. Regio- and stereoselective synthesis of functionalized and fused heterocycles from Morita-Baylis-Hillman adducts of dicyclopentadienone. Org Biomol Chem 2022; 20:2271-2281. [PMID: 35234778 DOI: 10.1039/d1ob02505h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient protocol for the Morita-Baylis-Hillman (MBH) reaction of dicyclopentadienone using CTAB has been developed. The MBH adduct was subsequently transformed to its acetate and bromide derivatives. The 1,3-bielectrophilic character of the MBH acetate and bromide was further explored with various 1,3-binucleophiles to construct various oxa-, thia- and aza-heterocycles. These reactions proceed through a cascade double Michael addition of 1,3-binucleophiles to the MBH acetate/bromide under basic conditions. Amenability of these reactions to scale-up and applications of the products in the synthesis of cyclopentenone-fused chromenones and thiopyranoindoles have been demonstrated.
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Affiliation(s)
- Alati Suresh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
| | - Sohan Lal
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400 076, India.
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4
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Arcile G, Ouazzani J, Betzer JF. Efficient Piancatelli rearrangement on a large scale using the Zippertex technology under subcritical water conditions. REACT CHEM ENG 2022. [DOI: 10.1039/d2re00098a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A series of furyl carbinols, which were directly obtained from a bio-sourced raw material, were efficiently transformed into cyclopentenone derivatives in good yields and on a large scale using the Zippertex technology under subcritical water conditions.
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Affiliation(s)
- Guillaume Arcile
- Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Jamal Ouazzani
- Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Jean-François Betzer
- Institut de Chimie des Substances Naturelles (ICSN), CNRS UPR 2301, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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5
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Dobler D, Leitner M, Moor N, Reiser O. 2‐Pyrone – A Privileged Heterocycle and Widespread Motif in Nature. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Daniel Dobler
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Michael Leitner
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Natalija Moor
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Oliver Reiser
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
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6
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Khan MAR, Wang BW, Chen YY, Lin TH, Lin HC, Yang YL, Pang KL, Liaw CC. Natural polyketide 6-pentyl-2 H-pyrone-2-one and its synthetic analogues efficiently prevent marine biofouling. BIOFOULING 2021; 37:257-266. [PMID: 33870823 DOI: 10.1080/08927014.2021.1890043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
Biofouling is a widespread phenomenon in oceans worldwide. With increasing human development and activities in open and coastal waters, and due to the environmental impact of AF organotins and copper-based paint, the demand for nontoxic antifouling (AF) paints is increasing. Various bioassays for antimicrobial activity, anti-biofilm formation and anti-barnacle settlement were established to evaluate the possibility of using marine natural products as AF agents. A series of natural products, isolated from the marine-derived fungi Trichoderma atroviride and T. reesei, were evaluated for their AF activity. One pyrone-type compound (1) demonstrated significant inhibitory activities toward barnacle cyprid settlement. Furthermore, a series of pyrone analogues (S1-S6) were synthesized, and their bioactivities were evaluated in the established systems. The results showed that compounds S5 and S6 exhibited a broad spectrum of bioactivities, such as anti-barnacle settlement, anti-biofilm formation and antimicrobial activities.
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Affiliation(s)
- Mo Aqib Raza Khan
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Bo-Wei Wang
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Yih-Yu Chen
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Ting-Hsuan Lin
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Hsiu-Chin Lin
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan, ROC
| | - Ka-Lai Pang
- Institute of Marine Biology and Centre of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan, ROC
| | - Chih-Chuang Liaw
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC
- Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan, ROC
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7
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Wang Q, Zhang C, Yang J. Synthesis of ACE tricyclic systems of daphnicyclidin A and dehy-droxymacropodumine A. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.12.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Leonardi G, Li J, Righetti GIC, Truscello AM, Gambarotti C, Terraneo G, Citterio A, Sebastiano R. Pyrone Synthesis from Renewable Sources: Easy Preparation of 3-Acetoxy-2-oxo-2H-pyran-6-carboxylic Salts and their Derivatives as 3-Hydroxy-2H-pyran-2-one from C6 Aldaric Acids. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901427] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Gabriella Leonardi
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Jiemeng Li
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Grazia Isa C. Righetti
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Ada M. Truscello
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Cristian Gambarotti
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Giancarlo Terraneo
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Attilio Citterio
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Roberto Sebastiano
- Department of Chemistry; Materials and Chemical Engineering “Giulio Natta”; Politecnico di Milano; Piazza Leonardo da Vinci 32 20133 Milano Italy
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9
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Zhuo CX, Fürstner A. Catalysis-Based Total Syntheses of Pateamine A and DMDA-Pat A. J Am Chem Soc 2018; 140:10514-10523. [PMID: 30056701 DOI: 10.1021/jacs.8b05094] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The marine natural product pateamine A (1) and its somewhat simplified designer analogue DMDA-Pat A (2) (DMDA = desmethyl-desamino) are potently cytotoxic compounds; most notably, 2 had previously been found to exhibit a promising differential in vivo activity in xenograft melanoma models, even though the ubiquitous eukaryotic initiation factor 4A (eIF4A) constitutes its primary biological target. In addition, 1 had also been identified as a possible lead in the quest for medication against cachexia, an often lethal muscle wasting syndrome affecting many immunocompromised or cancer patients. The short supply of these macrodiolides, however, rendered a more detailed biological assessment difficult. Therefore, a new synthetic approach to 1 and 2 has been devised, which centers on an unorthodox strategy for the formation of the highly isomerization-prone but essential Z, E-configured dienoate substructure embedded into the macrocyclic core. This motif was encoded in the form of a 2-pyrone ring and unveiled only immediately before macrocyclization by an unconventional iron-catalyzed ring opening/cross-coupling reaction, in which the enol ester entity of the pyrone gains the role of a leaving group. Since the required precursor was readily available by gold catalysis, this strategy rendered the overall sequence short, robust, and scalable. A surprisingly easy protecting group management together with a much improved end game for the formation of the trienyl side chain via a modern Stille coupling protocol also helped to make the chosen route practical. Change of a single building block allowed the synthesis to be redirected from the natural lead compound 1 toward its almost equipotent analogue 2. Isolation and reactivity profiling of pyrone tricarbonyliron complexes provide mechanistic information as well as insights into the likely origins of the observed chemoselectivity.
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Affiliation(s)
- Chun-Xiang Zhuo
- 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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10
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Burkhardt I, Dickschat JS. Synthesis and Absolute Configuration of Natural 2-Pyrones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800621] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Immo Burkhardt
- Kekulé-Institute of Organic Chemistry and Biochemistry; University of Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Jeroen S. Dickschat
- Kekulé-Institute of Organic Chemistry and Biochemistry; University of Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
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11
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12
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Jana S, Roy A, Lepore SD. Diversification reactions of γ-silyl allenyl esters: selective conversion to all-carbon quaternary centers and γ-allene dicarbinols. Chem Commun (Camb) 2018; 53:5125-5127. [PMID: 28435948 DOI: 10.1039/c7cc01708a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unique reactivity of γ-silyl allenyl esters is described. Taking advantage of the silyl group as a fluoride acceptor, these allenoates readily underwent addition to a variety of electrophiles to selectively yield products with all-carbon quaternary centers or allenoate dicarbinols. These dicarbinols were subsequently converted to novel highly substituted 6-hydro-2-pyrones.
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Affiliation(s)
- Susovan Jana
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431-0991, USA.
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13
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Kuga T, Sasano Y, Iwabuchi Y. IBX as a catalyst for dehydration of hydroperoxides: green entry to α,β-unsaturated ketones via oxygenative allylic transposition. Chem Commun (Camb) 2018; 54:798-801. [DOI: 10.1039/c7cc08957k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A catalytic transformation of allylic hydroperoxides into α,β-unsaturated carbonyl compounds using IBX as a dehydration catalyst is described.
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Affiliation(s)
- Tetsuya Kuga
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Aoba-ku
- Japan
| | - Yusuke Sasano
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Aoba-ku
- Japan
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14
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Verrier C, Moebs-Sanchez S, Queneau Y, Popowycz F. The Piancatelli reaction and its variants: recent applications to high added-value chemicals and biomass valorization. Org Biomol Chem 2018; 16:676-687. [DOI: 10.1039/c7ob02962d] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The conversion of furfuryl alcohols by the Piancatelli reaction (and its C- and N-variants) provided highly functionalized cyclopentenones (intermolecular) and spirocycles (intramolecular).
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15
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Lal S, Chowdhury A, Namboothiri IN. Synthesis of annulated oxa-triquinanes and oxa-diquinanes via cascade Michael addition-intramolecular alkylation involving α-halodicyclopentadienones. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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