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Bobek KB, Ezzat NS, Jones BS, Bian Y, Shaw TE, Jurca T, Li H, Yuan Y. Total Synthesis of Polysubstituted γ-Butyrolactone Lignans (-)-Hinokinin, (-)-Bicubebin B, and (-)-Isodeoxypodophyllotoxin via Oxime Carbonate Formation. Org Lett 2023; 25:31-36. [PMID: 36562600 PMCID: PMC10246472 DOI: 10.1021/acs.orglett.2c03727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The diverse structures and profound biological activities of lignan natural products have enticed significant effort in the exploration of new methodologies for their total synthesis. We have prepared γ-butyrolactone oximes from readily available δ-nitro alcohols via Boc2O mediated cyclization. The mild conditions are compatible with a wide range of functional groups, and this methodology has been applied to the total synthesis of five lignan natural products.
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Affiliation(s)
- Katelyn B Bobek
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Nameer S Ezzat
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
- Department of Chemistry, University of Mosul, Al Majmoaa St., Mosul 41002, Iraq
| | - Brandon S Jones
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Yujia Bian
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Thomas E Shaw
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Titel Jurca
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Hongya Li
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
- College of Life Sciences, Hebei Agricultural University, Baoding, Hebei 071000, P.R. China
| | - Yu Yuan
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
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Brosge F, Singh P, Almqvist F, Bolm C. Selected applications of Meldrum's acid - a tutorial. Org Biomol Chem 2021; 19:5014-5027. [PMID: 34019615 DOI: 10.1039/d1ob00395j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Due to its unique structure and the vast array of substituents that can be attached to its core, Meldrum's acid is a molecule with exceptional chemical properties. In water, it has a remarkably low pKa value of about 4.9. Its C5 position is readily involved in electrophilic substitution reactions whereas the C4 and C6 positions are easily attacked by nucleophiles. At elevated temperatures Meldrum's acid undergoes distinctive decomposition pathways, which can be used in cycloaddition and acylation reactions. In this Tutorial Review, the authors intend to introduce the principles of the synthetic chemistry of Meldrum's acid and provide the essential knowledge for the design and preparation of compounds with desired properties. As there are many reviews focusing on a specific detail of Meldrum's acid chemistry, we would like to give a broader picture of this diverse molecule for undergraduate and graduate students as well as experienced lab leaders. For achieving this goal, some recent advances in using Meldrum's acid derivatives in synthetic scenarios are presented with the hope to further stimulate and promote research leading to additional innovative applications of this synthetically highly relevant molecule.
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Affiliation(s)
- Felix Brosge
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Pardeep Singh
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Fredrik Almqvist
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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Hur J, Jang J, Sim J. A Review of the Pharmacological Activities and Recent Synthetic Advances of γ-Butyrolactones. Int J Mol Sci 2021; 22:2769. [PMID: 33803380 PMCID: PMC7967234 DOI: 10.3390/ijms22052769] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/26/2021] [Accepted: 03/03/2021] [Indexed: 02/06/2023] Open
Abstract
γ-Butyrolactone, a five-membered lactone moiety, is one of the privileged structures of diverse natural products and biologically active small molecules. Because of their broad spectrum of biological and pharmacological activities, synthetic methods for γ-butyrolactones have received significant attention from synthetic and medicinal chemists for decades. Recently, new developments and improvements in traditional methods have been reported by considering synthetic efficiency, feasibility, and green chemistry. In this review, the pharmacological activities of natural and synthetic γ-butyrolactones are described, including their structures and bioassay methods. Mainly, we summarize recent advances, occurring during the past decade, in the construction of γ-butyrolactone classified based on the bond formation in γ-butyrolactone between (i) C5-O1 bond, (ii) C4-C5 and C2-O1 bonds, (iii) C3-C4 and C2-O1 bonds, (iv) C3-C4 and C5-O1 bonds, (v) C2-C3 and C2-O1 bonds, (vi) C3-C4 bond, and (vii) C2-O1 bond. In addition, the application to the total synthesis of natural products bearing γ-butyrolactone scaffolds is described.
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Affiliation(s)
- Joonseong Hur
- Natural Products Research Institute, Korea Institute of Science and Technology (KIST), 679 Saimdang-ro, Gangneung 25451, Korea;
| | - Jaebong Jang
- College of Pharmacy, Korea University, Sejong 30019, Korea
| | - Jaehoon Sim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea
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Yuan X, Wan Z, Ning J, Zhang Q, Luo J. One‐pot oxidant‐free dehydrogenation‐Knoevenagel tandem reaction catalyzed by a recyclable magnetic base‐metal bifunctional catalyst. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5897] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaofeng Yuan
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Zijuan Wan
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Jinfeng Ning
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Qiang Zhang
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry, Biology and Material Engineering Suzhou University of Science and Technology Suzhou 215009 China
| | - Jun Luo
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P. R. China
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Drennhaus T, Öhler L, Djalali S, Höfmann S, Müller C, Pietruszka J, Worgull D. Enantioselective Ammonium Ylide Mediated One‐Pot Synthesis of Highly Substituted
γ
‐Butyrolactones. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Till Drennhaus
- Institute of Bio- and Geosciences (IBG-1)Forschungszentrum Jülich 52426 Jülich Germany
| | - Laura Öhler
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf located at Forschungszentrum Jülich Stetternicher Forst, Building 15.8 52426 Jülich Germany
| | - Saveh Djalali
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf located at Forschungszentrum Jülich Stetternicher Forst, Building 15.8 52426 Jülich Germany
| | - Svenja Höfmann
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf located at Forschungszentrum Jülich Stetternicher Forst, Building 15.8 52426 Jülich Germany
| | - Clemens Müller
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf located at Forschungszentrum Jülich Stetternicher Forst, Building 15.8 52426 Jülich Germany
| | - Jörg Pietruszka
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf located at Forschungszentrum Jülich Stetternicher Forst, Building 15.8 52426 Jülich Germany
- Institute of Bio- and Geosciences (IBG-1)Forschungszentrum Jülich 52426 Jülich Germany
| | - Dennis Worgull
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf located at Forschungszentrum Jülich Stetternicher Forst, Building 15.8 52426 Jülich Germany
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Mahto P, Rana NK, Shukla K, Das BG, Joshi H, Singh VK. Asymmetric Multifunctional Modular Organocatalysis: One-Pot Direct Strategy to Enantiopure α,β-Disubstituted γ-Butyrolactones. Org Lett 2019; 21:5962-5966. [PMID: 31322898 DOI: 10.1021/acs.orglett.9b02094] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A simple and efficient approach to enantioenriched α,β-disubstituted γ-butyrolactones has been developed through multifunctional modular organocatalysis in a highly enantioselective (>99% ee) and diastereoselective (>30:1) manner following a one-pot sequential Michael-hemiacetalization-oxidation reaction. The catalytic process has great substrate compatibility, and the products have been transformed to synthetically useful molecules. The methodology has also been applied to the formal synthesis of (+)-Pilocarpine.
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Affiliation(s)
- Pratibha Mahto
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Nirmal K Rana
- Department of Chemistry , Indian Institute of Technology Jodhpur , Jodhpur - 342 037 , Rajasthan , India
| | - Khyati Shukla
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Braja G Das
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Harshit Joshi
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
| | - Vinod K Singh
- Department of Chemistry , Indian Institute of Technology Kanpur , Kanpur - 208 016 , UP , India
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Khopade TM, Warghude PK, Sonawane AD, Bhat RG. Multicomponent synthesis of pyroglutamic acid derivatives via Knoevenagel-Michael-hydrolysis-lactamization-decarboxylation (KMHL-D) sequence. Org Biomol Chem 2019; 17:561-566. [PMID: 30574984 DOI: 10.1039/c8ob02473a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel and practical method for the synthesis of 3-substituted pyroglutamic acid derivatives is described. One pot multicomponent reaction of Meldrum's acid, aldehyde and Schiff's base followed an unprecedented chemoselective Knoevenagel-Michael-hydrolysis-lactamization domino sequence to afford 4-carboxy 3-substituted pyroglutamic acid derivatives under mild conditions. A carboxy intermediate formed appears to accelerate its own formation. The generality of the synthesis is exemplified by the use of a wide variety of aldehydes including enolizable aliphatic aldehydes, while substrates are stable under reaction conditions.
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Affiliation(s)
- Tushar M Khopade
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr Homi Bhabha Road, Pashan, 411008, Pune, Maharashtra, India.
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Miao YH, Hua YZ, Wang MC. Dinuclear zinc cooperative catalytic three-component reactions for highly enantioselective synthesis of 3,3′-dihydrofuran spirooxindoles. Org Biomol Chem 2019; 17:7172-7181. [DOI: 10.1039/c9ob01233h] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new dinuclear zinc cooperative catalytic enantioselective three-component reaction via a domino Knoevenagel/Michael/cyclization sequence has been developed.
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Affiliation(s)
- Yu-Hang Miao
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- People's Republic of China
| | - Yuan-Zhao Hua
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- People's Republic of China
| | - Min-Can Wang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- People's Republic of China
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