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Zheng JY, Wang F, Zhang Y, Zheng Z, Wu JH, Ren X, Su Z, Chen W, Wang T. Novel Stereo-Induction Pattern in Pudovik Addition/Phospha-Brook Rearrangement Towards Chiral Trisubstituted Allenes. Angew Chem Int Ed Engl 2024; 63:e202403707. [PMID: 38520267 DOI: 10.1002/anie.202403707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 03/25/2024]
Abstract
Despite the significance of chiral allene skeletons in catalysis, organic synthesis and medicinal chemistry et al., there is a scarcity of reports on axially chiral allenyl phosphorus compounds. Here, we disclosed an efficient and straightforward cascade reaction between ethynyl ketones and phosphine oxides, resulting in a broad array of trisubstituted allenes incorporating a phosphorus moiety in high yields with excellent stereoselectivities facilitated by peptide-mimic phosphonium salt (PPS) catalysis, Additionally, comprehensive series of mechanistic experiments have been conducted to elucidate that this cascade reaction proceeds via an asymmetric Pudovik addition reaction followed by a subsequent phospha-Brook rearrangement that occurs concomitantly with kinetic resolution, representing a stereospecific rearrangement and protonation process facilitating central-to-axial chirality transfer in a cascade manner. We anticipate that our research will pave the way for a promising exploration of novel stereo-induction pattern in the Pudovik addition/phospha-Brook rearrangement cascade reaction.
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Affiliation(s)
- Jia-Yan Zheng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Fan Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Yan Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zheng Zheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
- Department of Prosthodontics, West China Hospital of Stomatology and Jinjiang Out-patient Section, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Jia-Hong Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Xiaoyu Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Wenchuan Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
- Department of Prosthodontics, West China Hospital of Stomatology and Jinjiang Out-patient Section, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
- Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
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Nakamura A, Imamiya A, Ikegami Y, Rao F, Yuguchi H, Miki Y, Maegawa T. Selective synthesis of 3-formylbenzofuran and 3-acylbenzofuran using a chalcone rearrangement strategy. RSC Adv 2022; 12:30426-30431. [PMID: 36337936 PMCID: PMC9593264 DOI: 10.1039/d2ra06080a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/13/2022] [Indexed: 12/01/2022] Open
Abstract
We developed a method for highly selective synthesis of two benzofuran isomers, by rearranging and subsequently transforming 2-hydroxychalcones. Depending on the reaction conditions, synthesis of 3-formylbenzofurans, unconventional products, and 3-acylbenzofurans was achieved through cyclized 2,3-dihydrobenzofurans obtained from the rearranged products. The facile synthesis of 3-formylbenzofurans facilitated synthesis of the natural product, puerariafuran, from the corresponding chalcone.
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Affiliation(s)
- Akira Nakamura
- School of Pharmaceutical Sciences, Kindai University3-4-1 KowakaeHigashi-osakaOsaka 577-8502Japan
| | - Akira Imamiya
- School of Pharmaceutical Sciences, Kindai University3-4-1 KowakaeHigashi-osakaOsaka 577-8502Japan
| | - Yuichiro Ikegami
- School of Pharmaceutical Sciences, Kindai University3-4-1 KowakaeHigashi-osakaOsaka 577-8502Japan
| | - Fei Rao
- School of Pharmaceutical Sciences, Kindai University3-4-1 KowakaeHigashi-osakaOsaka 577-8502Japan
| | - Harumi Yuguchi
- School of Pharmaceutical Sciences, Kindai University3-4-1 KowakaeHigashi-osakaOsaka 577-8502Japan
| | - Yasuyoshi Miki
- School of Pharmaceutical Sciences, Kindai University3-4-1 KowakaeHigashi-osakaOsaka 577-8502Japan
| | - Tomohiro Maegawa
- School of Pharmaceutical Sciences, Kindai University3-4-1 KowakaeHigashi-osakaOsaka 577-8502Japan
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3
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Transition Metal Catalyzed Hiyama Cross-Coupling: Recent Methodology Developments and Synthetic Applications. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27175654. [PMID: 36080422 PMCID: PMC9458230 DOI: 10.3390/molecules27175654] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/17/2022]
Abstract
Hiyama cross-coupling is a versatile reaction in synthetic organic chemistry for the construction of carbon-carbon bonds. It involves the coupling of organosilicons with organic halides using transition metal catalysts in good yields and high enantioselectivities. In recent years, hectic progress has been made by researchers toward the synthesis of diversified natural products and pharmaceutical drugs using the Hiyama coupling reaction. This review emphasizes the recent synthetic developments and applications of Hiyama cross-coupling.
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Phang YL, Liu S, Zheng C, Xu H. Recent advances in the synthesis of natural products containing the phloroglucinol motif. Nat Prod Rep 2022; 39:1766-1802. [PMID: 35762867 DOI: 10.1039/d1np00077b] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Covering: June 2009 to 2021Natural products containing a phloroglucinol motif include simple and oligomeric phloroglucinols, polycyclic polyprenylated acylphloroglucinols, phloroglucinol-terpenes, xanthones, flavonoids, and coumarins. These compounds represent a major class of secondary metabolites which exhibit a wide range of biological activities such as antimicrobial, anti-inflammatory, antioxidant and hypoglycaemic properties. A number of these compounds have been authorized for therapeutic use or are currently being studied in clinical trials. Their structural diversity and utility in both traditional and conventional medicine have made them popular synthetic targets over the years. In this review, we compile and summarise the recent synthetic approaches to the natural products bearing a phloroglucinol motif. Focus has been given on ingenious strategies to functionalize the phloroglucinol moiety at multiple positions. The isolation and bioactivities of the compounds are also provided.
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Affiliation(s)
- Yee Lin Phang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Song Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China. .,Engineering Research Center of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Hongxi Xu
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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5
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Paul D, Das S, Saha S, Sharma H, Goswami RK. Intramolecular Heck Reaction in Total Synthesis of Natural Products: An Update. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100071] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Debobrata Paul
- School of Chemical Sciences Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Subhendu Das
- School of Chemical Sciences Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Sanu Saha
- School of Chemical Sciences Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Himangshu Sharma
- School of Chemical Sciences Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Rajib Kumar Goswami
- School of Chemical Sciences Indian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
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6
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Yadav S, Dash C. One-pot Tandem Heck alkynylation/cyclization reactions catalyzed by Bis(Pyrrolyl)pyridine based palladium pincer complexes. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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7
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Duc DX. Recent Achievement in the Synthesis of Benzo[b]furans. Curr Org Synth 2020; 17:498-517. [PMID: 32586253 DOI: 10.2174/1570179417666200625212639] [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: 03/05/2020] [Revised: 05/21/2020] [Accepted: 05/28/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Benzo[b]furan derivatives are oxygen-containing heterocyclic compounds consisting of fused benzene and furan rings and are present in a large number of natural and non-natural compounds. This class of compounds has a wide spectrum of biological activities, such as antiarrhythmic, anticancer, inflammatory, antioxidant, antimicrobial, and antiviral. Furthermore, benzo[b]furan derivatives have also been applied in various areas, such as organic electroluminescence device materials and organic dyes, photosensitizing material, organic synthesis as building blocks or intermediates. Because of a broad range of applicability, the synthesis of benzo[b]furan derivative has drawn great attention of chemists and many studies on the synthesis of this class of compounds have been reported recently. This review will give an overview of benzo[b]furan preparation based on studies dating back to the year 2012. OBJECTIVE In this review, recent development in the synthesis of benzo[b]furans are discussed. There has been increasingly new methodologies for the construction of benzo[b]furans skeleton to improve efficiency or develop environmentally friendly procedures. In some studies, reaction mechanisms were also outlined. CONCLUSION Many methods for the synthesis of benzo[b]furans have been reported recently. Most of them involve cyclization or cycloisomerization processes. Unquestionably, more imaginative strategies for the construction of benzo[b]furan skeleton will be established in the near future. Application of known methods to natural products or drug synthesis, on industrial scale for the synthesis of economically or medicinally important benzo[ b]furans will probably be paid attention to.
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Affiliation(s)
- Dau Xuan Duc
- Department of Chemistry, Vinh University, Vinh City, Vietnam
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8
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Ferric Chloride Catalyzed 1,3-Rearrangement of (Phenoxymethyl)heteroarenes to (Heteroarylmethyl)phenols. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Ramesh K, Satyanarayana G. Transition-Metal Catalyzed Stereoselective γ-Arylation and Friedel-Crafts Alkylation: A Concise Synthesis of Indenes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Karu Ramesh
- Department of Chemistry; Indian Institute of Technology (IIT) Hyderabad; 502 285, Sangareddy District Kandi - Telangana INDIA
| | - Gedu Satyanarayana
- Department of Chemistry; Indian Institute of Technology (IIT) Hyderabad; 502 285, Sangareddy District Kandi - Telangana INDIA
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Chiummiento L, D’Orsi R, Funicello M, Lupattelli P. Last Decade of Unconventional Methodologies for the Synthesis of Substituted Benzofurans. Molecules 2020; 25:E2327. [PMID: 32429435 PMCID: PMC7288127 DOI: 10.3390/molecules25102327] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
This review describes the progress of the last decade on the synthesis of substituted benzofurans, which are useful scaffolds for the synthesis of numerous natural products and pharmaceuticals. In particular, new intramolecular and intermolecular C-C and/or C-O bond-forming processes, with transition-metal catalysis or metal-free are summarized. (1) Introduction. (2) Ring generation via intramolecular cyclization. (2.1) C7a-O bond formation: (route a). (2.2) O-C2 bond formation: (route b). (2.3) C2-C3 bond formation: (route c). (2.4) C3-C3a bond formation: (route d). (3) Ring generation via intermolecular cyclization. (3.1) C7a-O and C3-C3a bond formation (route a + d). (3.2) O-C2 and C2-C3 bond formation: (route b + c). (3.3) O-C2 and C3-C3a bond formation: (route b + d). (4) Benzannulation. (5) Conclusion.
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Affiliation(s)
- Lucia Chiummiento
- Department of Science, Via dell’Ateneo Lucano, 10, 85100 Potenza, Italy; (R.D.); (M.F.); (P.L.)
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11
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Abstract
:
The benzofuranyl motif present in compounds exhibits various medicinal properties and
non-drug applications. These derivatives are naturally occurring compounds or synthetic materials,
which cover a broad spectrum of pharmacological activities like anti-inflammatory, anti-diabetic, anti-
depressant, anti-HIV, anti-microbial, anti-proliferative, anti-convulsant, cytotoxic, analgesic, etc.
Few of the commercially interesting compounds from this class are, ailanthoidol (anti-inflammatory),
amiodarone, dronedarone, celivarone (anti-arrhythmic), bufuralol (muscular airways relaxant), morphine,
5-(2-aminopropyl)benzofuran; 5-APB, 6-(2-aminopropyl)benzofuran; 6-APB (CNS), rifampicin
(antibiotic), etc., whereas, some of the non-drug applications are in perfumery industry (bergapten)
and as tannin activators in sunscreen preparations (psoralen, 8-methoxypsoralen, and angelicin).
Considering these interesting biological activities and commercial utilities, a review on the synthetic
aspects of this privileged scaffold was attempted. For the benefit of natural product-based drug discovery,
available sources of these derivatives, extraction process and reported biological activities
have also been outlined in this review.
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Affiliation(s)
- Andiappan Lavanya
- Department of Training and Development, Orchid Pharma Ltd., 138-149, SIDCO Industrial Estate, Alathur, Chennai- 603 110, Tamil Nadu, India
| | - Kilambi Narasimhan
- Department of Training and Development, Orchid Pharma Ltd., 138-149, SIDCO Industrial Estate, Alathur, Chennai- 603 110, Tamil Nadu, India
| | - Vediappen Padmini
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
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12
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Reddy RJ, Kumar JJ, Kumari AH, Krishna GR. Pd‐Catalyzed Annulation of β‐Iodovinyl Sulfones with 2‐Halophenols: A General Route for the Synthesis of 3‐Sulfonyl Benzofuran Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901550] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Raju Jannapu Reddy
- Department of Chemistry, University College of ScienceOsmania University Hyderabad 500 007 India
| | - Jangam Jagadesh Kumar
- Department of Chemistry, University College of ScienceOsmania University Hyderabad 500 007 India
| | - Arram Haritha Kumari
- Department of Chemistry, University College of ScienceOsmania University Hyderabad 500 007 India
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13
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Begala M, Mancinelli M, Delogu GL. Unexpected migration of a benzoyl group in the intramolecular Wittig reaction of o-acyloxybenzylidenephosphoranes with benzoyl chlorides: One-pot synthesis of isomeric 3-benzoyl-2-phenylbenzofurans. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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14
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Oschmann M, Johansson Holm L, Pourghasemi-Lati M, Verho O. Synthesis of Elaborate Benzofuran-2-carboxamide Derivatives through a Combination of 8-Aminoquinoline Directed C-H Arylation and Transamidation Chemistry. Molecules 2020; 25:E361. [PMID: 31952313 PMCID: PMC7024369 DOI: 10.3390/molecules25020361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/20/2022] Open
Abstract
Herein, we present a short and highly modular synthetic route that involves 8-aminoquinoline directed C-H arylation and transamidation chemistry, and which enables access to a wide range of elaborate benzofuran-2-carboxamides. For the directed C-H arylation reactions, Pd catalysis was used to install a wide range of aryl and heteroaryl substituents at the C3 position of the benzofuran scaffold in high efficiency. Directing group cleavage and further diversification of the C3-arylated benzofuran products were then achieved in a single synthetic operation through the utilization of a one-pot, two-step transamidation procedure, which proceeded via the intermediate N-acyl-Boc-carbamates. Given the high efficiency and modularity of this synthetic strategy, it constitutes a very attractive method for generating structurally diverse collections of benzofuran derivatives for small molecule screening campaigns.
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Affiliation(s)
| | | | | | - Oscar Verho
- Arrhenius Laboratory, Department of Organic Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden; (M.O.); (L.J.H.); (M.P.-L.)
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Affiliation(s)
- Divya Bhatt
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab- 140001 India
| | - Chandresh Kumari
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab- 140001 India
| | - Avijit Goswami
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab- 140001 India
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16
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Li Y, Yu J, Bi Y, Yan G, Huang D. Tandem Reactions of Ynones:viaConjugate Addition of Nitrogen‐, Carbon‐, Oxygen‐, Boron‐, Silicon‐, Phosphorus‐, and Sulfur‐Containing Nucleophiles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900611] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yang Li
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Jian Yu
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Yicheng Bi
- Department of ChemistryQingdao University of Science & Technology Qingdao Shandong People's Republic of China
| | - Guobing Yan
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
| | - Dayun Huang
- Department of ChemistryLishui University No. 1 Xueyuan Road Lishui City 323000 Zhejiang Province People's Republic of China
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Miao YH, Hu YH, Yang J, Liu T, Sun J, Wang XJ. Natural source, bioactivity and synthesis of benzofuran derivatives. RSC Adv 2019; 9:27510-27540. [PMID: 35529241 PMCID: PMC9070854 DOI: 10.1039/c9ra04917g] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 08/27/2019] [Indexed: 12/30/2022] Open
Abstract
Benzofuran compounds are a class of compounds that are ubiquitous in nature. Numerous studies have shown that most benzofuran compounds have strong biological activities such as anti-tumor, antibacterial, anti-oxidative, and anti-viral activities. Owing to these biological activities and potential applications in many aspects, benzofuran compounds have attracted more and more attention of chemical and pharmaceutical researchers worldwide, making these substances potential natural drug lead compounds. For example, the recently discovered novel macrocyclic benzofuran compound has anti-hepatitis C virus activity and is expected to be an effective therapeutic drug for hepatitis C disease; novel scaffold compounds of benzothiophene and benzofuran have been developed and utilized as anticancer agents. Novel methods for constructing benzofuran rings have been discovered in recent years. A complex benzofuran derivative is constructed by a unique free radical cyclization cascade, which is an excellent method for the synthesis of a series of difficult-to-prepare polycyclic benzofuran compounds. Another benzofuran ring constructed by proton quantum tunneling has not only fewer side reactions, but also high yield, which is conducive to the construction of complex benzofuran ring systems. This review summarizes the recent studies on the various aspects of benzofuran derivatives including their important natural product sources, biological activities and drug prospects, and chemical synthesis, as well as the relationship between the bioactivities and structures.
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Affiliation(s)
- Yu-Hang Miao
- School of Medicine and Life Sciences, University of Jinan, Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Yu-Heng Hu
- School of Medicine and Life Sciences, University of Jinan, Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Jie Yang
- School of Medicine and Life Sciences, University of Jinan, Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Teng Liu
- School of Medicine and Life Sciences, University of Jinan, Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Jie Sun
- School of Medicine and Life Sciences, University of Jinan, Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Xiao-Jing Wang
- School of Medicine and Life Sciences, University of Jinan, Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
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Yadav S, Singh A, Mishra I, Ray S, Mobin SM, Dash C. Well‐Defined N‐Heterocyclic Carbene‐Palladium Complexes as Efficient Catalysts for Domino Sonogashira Coupling/Cyclization Reaction and C‐H bond Arylation of Benzothiazole. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4936] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Seema Yadav
- Department of Chemistry, School of Chemical Sciences and PharmacyCentral University of Rajasthan Bandarsindri India
| | - Ajeet Singh
- Department of ChemistryIndian Institute of Technology (IIT) Indore Simrol, Khandwa Road Indore 453552 India
| | - Isha Mishra
- Department of Chemistry, School of Chemical Sciences and PharmacyCentral University of Rajasthan Bandarsindri India
| | - Sriparna Ray
- Department of Chemistry, School of Basic SciencesManipal University Jaipur Jaipur Rajasthan 303007 India
| | - Shaikh M. Mobin
- Department of ChemistryIndian Institute of Technology (IIT) Indore Simrol, Khandwa Road Indore 453552 India
| | - Chandrakanta Dash
- Department of Chemistry, School of Chemical Sciences and PharmacyCentral University of Rajasthan Bandarsindri India
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19
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Sha Q, Liu H, Li Y. Trifluoroacetic Acid Catalyzed Cascade Reactions of 2,3‐Diketoesters with Cyclohexane‐1,3‐diones: Strategy Towards 4‐Hydroxybenzofuran Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qiang Sha
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Haixuan Liu
- Sanhome R&D CentreNanjing Sanhome Pharmaceutical Co., Ltd. Nanjing 211135 People's Republic of China
| | - Yuan Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
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20
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Singh C, Prakasham AP, Ghosh P. Palladium Acyclic Diaminocarbene (ADC) Triflate Complexes as Effective Precatalysts for the Hiyama Alkynylation/Cyclization Reaction Yielding Benzofuran Compounds: Probing the Influence of the Triflate Co-Ligand in the One-Pot Tandem Reaction. ChemistrySelect 2019. [DOI: 10.1002/slct.201803292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chandan Singh
- Department of Chemistry; Indian Institute of Technology Bombay Powai; Mumbai 400 076 Fax: +91 22 2572 3480
| | - A. P. Prakasham
- Department of Chemistry; Indian Institute of Technology Bombay Powai; Mumbai 400 076 Fax: +91 22 2572 3480
| | - Prasenjit Ghosh
- Department of Chemistry; Indian Institute of Technology Bombay Powai; Mumbai 400 076 Fax: +91 22 2572 3480
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21
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Sha Q, Liu H. De novo synthesis of benzofurans via trifluoroacetic acid catalyzed cyclization/oxidative aromatization cascade reaction of 2-hydroxy-1,4-diones. Org Biomol Chem 2019; 17:7547-7551. [DOI: 10.1039/c9ob01422e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A simple metal-free cyclization/oxidative aromatization reaction starting from 2-hydroxy-1,4-diones for the de novo synthesis of benzofurans was developed.
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Affiliation(s)
- Qiang Sha
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- P. R. China
| | - Haixuan Liu
- Sanhome R&D Centre
- Nanjing Sanhome Pharmaceutical Co
- Ltd
- Nanjing 211135
- P. R. China
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22
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Abstract
Flavan-3-ols are a series of natural products widely present in plants and show versatile biological activities. The structures of such compounds are characterized by owing two adjacent chiral centers and three rings. Their interesting structures and promising biological activities have driven increasing research developments toward the preparation of enantioenriched flavan-3-ols. This review summarizes the recent approaches for the asymmetric synthesis of chiral flavan-3-ols from two strategies in the construction of chiral centers. The key steps in the synthetic protocol involve Sharpless asymmetric dihydroxylation, Shi asymmetric epoxidation and Sharpless asymmetric epoxidation.
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Affiliation(s)
- Zehua Yang
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Fang Xiao
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Yinxiang Zhang
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Zaoduan Wu
- c Affiliated Nanhua Hospital, University of South China , Hengyang , Hunan , PR China
| | - Xing Zheng
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
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23
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Thévenin M, Thoret S, Dubois J. First Total Synthesis of Original Chalcone-Flavone Dimers as Cissampeloflavone Analogues. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Marion Thévenin
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Université Paris Sud; Université Paris Saclay; 1 avenue de la Terrasse 91198 Gif sur Yvette CEDEX France
| | - Sylviane Thoret
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Université Paris Sud; Université Paris Saclay; 1 avenue de la Terrasse 91198 Gif sur Yvette CEDEX France
| | - Joëlle Dubois
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Université Paris Sud; Université Paris Saclay; 1 avenue de la Terrasse 91198 Gif sur Yvette CEDEX France
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24
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Singh C, Prakasham AP, Gangwar MK, Ghosh P. Binuclear Fused 5-membered Palladacycle and Palladium Complex of Amido-Functionalized N-heterocyclic Carbene Precatalysts for the One-Pot Tandem Hiyama Alkynylation/Cyclization Reactions. ChemistrySelect 2018. [DOI: 10.1002/slct.201801667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chandan Singh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - A. P. Prakasham
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Manoj Kumar Gangwar
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Prasenjit Ghosh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
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25
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Saraiah B, Gautam V, Acharya A, Pasha MA, Ila H. One-Pot Synthesis of 2-(Het)aryl/alkyl-3-cyanobenzofurans from 2-(2-Bromoaryl)-3-(het)aryl-3-(methylthio)acrylonitriles and Benzyl Carbamate. ACS OMEGA 2018; 3:8355-8364. [PMID: 31458967 PMCID: PMC6644376 DOI: 10.1021/acsomega.8b01172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 07/13/2018] [Indexed: 06/10/2023]
Abstract
A one-pot synthesis of 2-(het)aryl/alkyl-3-cyanobenzofurans has been reported. The overall sequence involves base-induced reaction of 2-(2-bromoaryl)-3-(het)aryl-3-(methylthio)acrylonitriles with benzyl carbamate, generating α-(het)aroyl-α-(2-bromoaryl)acetonitriles, which are in situ subjected to copper-catalyzed intramolecular O-arylation, furnishing the 2-(het)aryl/alkyl-3-cyanobenzofurans in high yields. A probable mechanism for the base-induced cleavage of 2-(2-bromoaryl)-3-(het)aryl-3-(methylthio)acrylonitriles to α-(het)aroyl-α-(2-bromoaryl)acetonitriles in the presence of benzyl carbamate has been proposed.
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Affiliation(s)
- Bonagiri Saraiah
- Department
of Studies in Chemistry, Central College campus, Bangalore University, Palace Road, Bangalore 560001, India
| | - Vibha Gautam
- New
Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Anand Acharya
- New
Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Mohamed Afzal Pasha
- Department
of Studies in Chemistry, Central College campus, Bangalore University, Palace Road, Bangalore 560001, India
| | - Hiriyakkanavar Ila
- New
Chemistry Unit, Jawaharlal Nehru Centre
for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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26
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Villuri BK, Ichake SS, Reddy SR, Kavala V, Bandi V, Kuo CW, Yao CF. Copper-Catalyzed Cascade Synthesis of 2-Aryl-3-cyanobenzofuran and Dibenzo[b,f]oxepine-10-carbonitrile Derivatives. J Org Chem 2018; 83:10241-10247. [DOI: 10.1021/acs.joc.8b01443] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bharath Kumar Villuri
- Department of Chemistry, National Taiwan Normal University, 88, Section 4, Ting-Chow Road, Taipei 116, Taiwan
| | - Sachin S. Ichake
- Department of Chemistry, National Taiwan Normal University, 88, Section 4, Ting-Chow Road, Taipei 116, Taiwan
| | - Sabbasani Rajasekhara Reddy
- Department of Chemistry, National Taiwan Normal University, 88, Section 4, Ting-Chow Road, Taipei 116, Taiwan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore 632014, India
| | - Veerababurao Kavala
- Department of Chemistry, National Taiwan Normal University, 88, Section 4, Ting-Chow Road, Taipei 116, Taiwan
| | - Vijayalakshmi Bandi
- Department of Chemistry, National Taiwan Normal University, 88, Section 4, Ting-Chow Road, Taipei 116, Taiwan
| | - Chun-Wei Kuo
- Department of Chemistry, National Taiwan Normal University, 88, Section 4, Ting-Chow Road, Taipei 116, Taiwan
| | - Ching-Fa Yao
- Department of Chemistry, National Taiwan Normal University, 88, Section 4, Ting-Chow Road, Taipei 116, Taiwan
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27
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Begala M, Caboni P, Matos MJ, Delogu GL. Unexpected one-step synthesis of 3-benzoyl-2-phenylbenzofurans under Wittig conditions. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Singh C, Prakasham AP, Gangwar MK, Butcher RJ, Ghosh P. One-Pot Tandem Hiyama Alkynylation/Cyclizations by Palladium(II) Acyclic Diaminocarbene (ADC) Complexes Yielding Biologically Relevant Benzofuran Scaffolds. ACS OMEGA 2018; 3:1740-1756. [PMID: 31458491 PMCID: PMC6641338 DOI: 10.1021/acsomega.7b01974] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/23/2018] [Indexed: 06/10/2023]
Abstract
A series of palladium acyclic diaminocarbene (ADC) complexes of the type cis-[(R1NH)(R2)methylidene]PdCl2(CNR1) [R1 = 2,4,6-(CH3)3C6H2: R2 = NC5H10 (2); NC4H8 (3); NC4H8O (4)] were used not only to perform the Csp2 -Csp Hiyama coupling between aryl iodide and triethoxysilylalkynes but also to subsequently carry out the one-pot tandem Hiyama alkynylation/cyclization reaction between 2-iodophenol and triethoxysilylalkynes, giving a convenient time-efficient access to the biologically relevant benzofuran compounds. The palladium ADC complexes (2-4) were conveniently synthesized by the nucleophilic addition of secondary amines, namely, piperidine, pyrrolidine, and morpholine on the cis-{(2,4,6-(CH3)3C6H2)NC}2PdCl2 in moderate yields (ca. 61-66%).
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Affiliation(s)
- Chandan Singh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - A. P. Prakasham
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Manoj Kumar Gangwar
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
| | - Raymond J. Butcher
- Department
of Chemistry, Howard University, Washington DC 20059, United States
| | - Prasenjit Ghosh
- Department
of Chemistry, Indian Institute of Technology
Bombay, Powai, Mumbai 400 076, India
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29
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Jian J, Fan J, Yang H, Lan P, Li M, Liu P, Gao H, Sun P. Total Synthesis of the Flavonoid Natural Product Houttuynoid A. JOURNAL OF NATURAL PRODUCTS 2018; 81:371-377. [PMID: 29394065 DOI: 10.1021/acs.jnatprod.7b00791] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The first total synthesis of the antiviral flavonoid houttuynoid A (1) has been achieved from aryl ketone 6 and benzofuran aldehyde 5 in nine linear steps. The C6-C3-C6 structure of the flavonoid was synthesized by an I2-catalyzed oxa-Michael addition of a chalcone intermediate, generated by the Claisen-Schmidt condensation of 5 and 6. This work provides a method for the synthesis of houttuynoids and provides a reference for the synthesis of the remaining members of the houttuynoid family.
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Affiliation(s)
- Jie Jian
- Department of Medicinal Chemistry and Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University , Guangzhou 510632, People's Republic of China
| | - Jilin Fan
- Department of Medicinal Chemistry and Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University , Guangzhou 510632, People's Republic of China
| | - Hui Yang
- Department of Medicinal Chemistry and Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University , Guangzhou 510632, People's Republic of China
| | - Ping Lan
- Department of Food Science and Engineering, College of Science and Engineering, Jinan University , Guangzhou 510632, People's Republic of China
| | - Manmei Li
- Department of Medicinal Chemistry and Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University , Guangzhou 510632, People's Republic of China
| | - Peijun Liu
- Pharmacy School, Zunyi Medical University , Zunyi 563003, People's Republic of China
| | - Hao Gao
- Department of Medicinal Chemistry and Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University , Guangzhou 510632, People's Republic of China
| | - Pinghua Sun
- Department of Medicinal Chemistry and Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy/Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University , Guangzhou 510632, People's Republic of China
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30
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Wang C, Fan Y, Yao Y, Chen W, Cui X, Zhu G, Zhou W, Tang L. Base-Promoted Substitution Reaction: A Simple, Economical, and Efficient Method for Obtaining 3-Sulfenylated Benzo[ b
]furan Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201702142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Cong Wang
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
| | - Yuxin Fan
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
| | - Yaoyao Yao
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Wenzhang Chen
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Xing Cui
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Gaofeng Zhu
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Wei Zhou
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
| | - Lei Tang
- School of Pharmacy; Guizhou Medical University; Guiyang 550025, Guizhou, P. R. China
- State Key Laboratory of Functions and Applications of Medicinal Plants; Guizhou Medcial University; Guiyang 550014, Guizhou, P. R. China
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D; Guizhou Medical University; Guiyang 550004, Guizhou, P. R. China
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31
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Zhang H, Ma C, Zheng Z, Sun R, Yu X, Zhao J. Synthesis of 2-arylbenzofuran-3-carbaldehydes via an organocatalytic [3+2] annulation/oxidative aromatization reaction. Chem Commun (Camb) 2018; 54:4935-4938. [DOI: 10.1039/c8cc02474j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel organocatalytic [3+2] annulation/oxidative aromatization reaction of enals with 2-halophenols is developed for the synthesis of 2-arylbenzofuran-3-carbaldehydes.
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Affiliation(s)
- Huiwen Zhang
- State Key Laboratory of Bioengineering Reactors and Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Chunmei Ma
- State Key Laboratory of Bioengineering Reactors and Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Ziwei Zheng
- State Key Laboratory of Bioengineering Reactors and Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Rengwei Sun
- State Key Laboratory of Bioengineering Reactors and Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xinhong Yu
- State Key Laboratory of Bioengineering Reactors and Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jianhong Zhao
- State Key Laboratory of Bioengineering Reactors and Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
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32
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Zhang W, Xue W, Jia Y, Wen G, Lian X, Shen J, Liu A, Wu S. A concise synthesis of (±)-7-O-galloyltricetiflavan. RSC Adv 2018; 8:14389-14392. [PMID: 35540744 PMCID: PMC9079901 DOI: 10.1039/c8ra01606b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 03/23/2018] [Indexed: 11/23/2022] Open
Abstract
(±)-7-O-galloyltricetiflavan (1a) was synthesized successfully in five steps from the commercially available trihydroxyacetophenone (2) and trimethoxybenzoyl chloride (3). The flavone 4a was prepared in a one-pot reaction and it gave hex-O-methylflavan 6 followed by acylation and reduction. However, the demethylation of flavan 6, 5-O-acetylflavan 10 and 5-O-phenylacetylflavan 11 by BBr3 gave all the hydrolyzed fragments 7 and 8 as the major products. By contrast, in the same condition, hept-O-methylflavan 9 could provide the desired product (±)-7-O-galloyltricetiflavan (1a) in 91% yield. The additional 5-O-B-Br2 complex may stabilize the ester bond during the demethylation process. We report the first total synthesis of (±)-7-O-galloyltricetiflavan (1a) in five steps as well as an interesting discovery during the demethylation process.![]()
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Affiliation(s)
- Wenxuan Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
| | - Wenjie Xue
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
| | - Yuqing Jia
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
| | - Gang Wen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
| | - Xu Lian
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
| | - Jing Shen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
| | - Ailin Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
| | - Song Wu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- People's Republic of China
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33
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Cui HL, Deng HQ, Lei JJ. Metal-free one-pot synthesis of benzofurans with ynones and quinones through aza-Michael/Michael/annulation sequence. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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34
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Tang Y, Jiang C, Zhang X, Liu C, Lin J, Wang Y, Du C, Peng X, Li W, Liu Y, Cheng M. Collective Syntheses of 2-(3-Methylbenzofuran-2-yl)phenol-Derived Natural Products by a Cascade [3,3]-Sigmatropic Rearrangement/Aromatization Strategy. J Org Chem 2017; 82:11102-11109. [PMID: 28944672 DOI: 10.1021/acs.joc.7b02066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A cascade [3,3]-sigmatropic rearrangement/aromatization strategy to the synthesis of 2-(3-methylbenzofuran-2-yl)phenol derivatives was developed and applied to the collective syntheses of seven 2-arylbenzofuran-containing natural products, namely glycybenzofuran, glycyuralin E, lespedezol A1, puerariafuran, 7,2',4'-trihydroxy-3-benzofurancarboxylic acid, coumestrol, and 4'-O-methylcoumestrol. Among them, the total syntheses of glycybenzofuran, glycyuralin E, puerariafuran, 7,2',4'-trihydroxy-3-benzofurancarboxylic acid, and 4'-O-methylcoumestrol were reported for the first time. The practicality of this novel strategy in preparation of the key intermediates was demonstrated by performing the reaction on gram scale and by synthesizing a series of natural products with 2-(3-methylbenzofuran-2-yl)phenol scaffolds in a common strategy.
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Affiliation(s)
- Yingzhan Tang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Chongguo Jiang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Xinhang Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Chengjun Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Jingsheng Lin
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Yanshi Wang
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Chuan Du
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Xiaoshi Peng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
| | - Wei Li
- Faculty of Pharmaceutical Sciences, Toho University , Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University , Shenyang 110016, P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China , Benxi 117000, P. R. China
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35
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Chen R, Fan X, Xu Z, He Z. Facile synthesis of polysubstituted furans and dihydrofurans via cyclization of bromonitromethane with oxodienes. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.08.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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36
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Wu W, Yi S, Huang W, Luo D, Jiang H. Ag-Catalyzed Oxidative Cyclization Reaction of 1,6-Enynes and Sodium Sulfinate: Access to Sulfonylated Benzofurans. Org Lett 2017; 19:2825-2828. [DOI: 10.1021/acs.orglett.7b00980] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wanqing Wu
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Songjian Yi
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wei Huang
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Di Luo
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- Key
Laboratory of Functional Molecular Engineering of Guangdong Province,
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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37
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Gao F, Wang JT, Liu LL, Ma N, Yang C, Gao Y, Xia W. Synthesis of carbonylated heteroaromatic compounds via visible-light-driven intramolecular decarboxylative cyclization of o-alkynylated carboxylic acids. Chem Commun (Camb) 2017; 53:8533-8536. [DOI: 10.1039/c7cc04813k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
An efficient strategy for the easy access to carbonylated heteroaromatic compounds has been developed via a visible-light-promoted intramolecular decarboxylative cyclization reaction of o-alkynylated carboxylic acids.
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Affiliation(s)
- Fei Gao
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Jiu-Tao Wang
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Lin-Lin Liu
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Na Ma
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
| | - Yuan Gao
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai
- China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology (Shenzhen)
- Shenzhen
- China
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38
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Sun P, Gao S, Yang C, Guo S, Lin A, Yao H. Controllable Rh(III)-Catalyzed Annulation between Salicylaldehydes and Diazo Compounds: Divergent Synthesis of Chromones and Benzofurans. Org Lett 2016; 18:6464-6467. [DOI: 10.1021/acs.orglett.6b03355] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peng Sun
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, School of
Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Shang Gao
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, School of
Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Chi Yang
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, School of
Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Songjin Guo
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, School of
Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, School of
Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural
Medicines (SKLNM) and Department of Medicinal Chemistry, School of
Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
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39
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40
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Ponomarenko MV, Grabowsky S, Pal R, Röschenthaler GV, Fokin AA. SF5-Enolates in Ti(IV)-Mediated Aldol Reactions. J Org Chem 2016; 81:6783-91. [PMID: 27384450 DOI: 10.1021/acs.joc.6b00946] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The F···Ti bonding in the transition structures determines high trans- and syn-diastereoselectivities for aldol reactions of SF5-acetates with aldehydes in the presence of TiCl4 in the non-nucleophilic solvent CH2Cl2. Such bonding is canceled in nucleophilic solvents where opposite cis-stereochemistry is observed. The potential of thus obtained stereoisomeric SF5-aryl acrylates as dipolarophiles in the preparation of SF5-containing heterocycles is demonstrated.
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Affiliation(s)
- Maksym V Ponomarenko
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH , Campus Ring 1, 28759 Bremen, Germany
| | - Simon Grabowsky
- Universität Bremen , Institut für Anorganische Chemie und Kristallographie, Leobener Str. NW2, 28359 Bremen, Germany
| | - Rumpa Pal
- Universität Bremen , Institut für Anorganische Chemie und Kristallographie, Leobener Str. NW2, 28359 Bremen, Germany
| | - Gerd-Volker Röschenthaler
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH , Campus Ring 1, 28759 Bremen, Germany
| | - Andrey A Fokin
- Department of Organic Chemistry, Kiev Polytechnic Institute , pr. Pobedy 37, 03056 Kiev, Ukraine
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41
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42
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Kumar A, Gangwar MK, Prakasham AP, Mhatre D, Kalita AC, Ghosh P. Accessing a Biologically Relevant Benzofuran Skeleton by a One-Pot Tandem Heck Alkynylation/Cyclization Reaction Using Well-Defined Palladium N-Heterocyclic Carbene Complexes. Inorg Chem 2016; 55:2882-93. [DOI: 10.1021/acs.inorgchem.5b02727] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - Prasenjit Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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43
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Zhang L, Peng Z, Wen Q, Li X, Lu P, Wang Y. Copper-Catalyzed Preparation of 2-Aryl-3-cyanobenzofurans with Bright Blue Photoluminescence. Org Lett 2016; 18:728-31. [DOI: 10.1021/acs.orglett.5b03704] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lianpeng Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zhixing Peng
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Qiaodong Wen
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xihui Li
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Ping Lu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanguang Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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44
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Watanabe K, Mino T, Ikematsu T, Hatta C, Yoshida Y, Sakamoto M. Hydrazone–palladium catalyzed annulation of 1-cinnamyloxy-2-ethynylbenzene derivatives. Org Chem Front 2016. [DOI: 10.1039/c6qo00112b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The annulation of 1-cinnamyloxy-2-ethynylbenzene derivatives using a hydrazone–palladium catalyst system proceeded smoothly and gave the corresponding 2-substituted-3-cinnamylbenzofurans in good-to-excellent yields.
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Affiliation(s)
- Kohei Watanabe
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Takashi Mino
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Tatsuya Ikematsu
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Chikako Hatta
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Yasushi Yoshida
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
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45
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Kumar RK, Bi X. Catalytic σ-activation of carbon–carbon triple bonds: reactions of propargylic alcohols and alkynes. Chem Commun (Camb) 2016; 52:853-68. [DOI: 10.1039/c5cc08386a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of organic transformations have been developed based on conceptually novel catalytic σ-activation of CC bonds of alkynes.
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Affiliation(s)
- Rapolu Kiran Kumar
- Department of Chemistry
- Northeast Normal University
- 130024 Changchun
- P. R. China
| | - Xihe Bi
- Department of Chemistry
- Northeast Normal University
- 130024 Changchun
- P. R. China
- State Key Laboratory of Elemento-Organic Chemistry
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46
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Kang B, Lee MH, Kim M, Hwang J, Kim HB, Chi DY. Transition-Metal-Free Synthesis of 2-Substituted Methyl Benzo[b]furan-3-carboxylates. J Org Chem 2015; 80:8254-61. [DOI: 10.1021/acs.joc.5b01311] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Byungsoo Kang
- Department
of Chemistry, Sogang University, 35 Baekbeomro Mapogu, Seoul 121-742, Korea
| | - Min Hyung Lee
- Department
of Chemistry, Sogang University, 35 Baekbeomro Mapogu, Seoul 121-742, Korea
| | - Mijung Kim
- Department
of Chemistry, Sogang University, 35 Baekbeomro Mapogu, Seoul 121-742, Korea
| | - Jungwoon Hwang
- Department
of Chemistry, Sogang University, 35 Baekbeomro Mapogu, Seoul 121-742, Korea
| | - Hyeong Baik Kim
- Department
of Chemistry, Sogang University, 35 Baekbeomro Mapogu, Seoul 121-742, Korea
| | - Dae Yoon Chi
- Department
of Chemistry, Sogang University, 35 Baekbeomro Mapogu, Seoul 121-742, Korea
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47
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Li L, Xia XH, Wang Y, Bora PP, Kang Q. Synthesis of BenzofuransviaTandem Rhodium-Catalyzed C(sp3)H Insertion and Copper-Catalyzed Dehydrogenation. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500396] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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48
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49
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Xu T, Zhang E, Wang D, Wang Y, Zou Y. Cu-Catalyzed Consecutive Hydroxylation and Aerobic Oxidative Cycloetherification under Microwave Conditions: Entry to 2-Arylbenzofuran-3-carboxylic Acids. J Org Chem 2015; 80:4313-24. [DOI: 10.1021/jo502802k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tianlong Xu
- Guangzhou
Institute of Chemistry, Chinese Academy of Science, Guangzhou 510650, China
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Ensheng Zhang
- Guangzhou
Institute of Chemistry, Chinese Academy of Science, Guangzhou 510650, China
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Dejian Wang
- Guangzhou
Institute of Chemistry, Chinese Academy of Science, Guangzhou 510650, China
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Yan Wang
- New
Drug Research and Development Center, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Yong Zou
- School
of Pharmaceutical Science, Sun Yat-sun University, Guangzhou 510006, China
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50
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Prakash R, Shekarrao K, Saikia P, Gogoi S, Boruah RC. Palladium mediated regioselective intramolecular Heck reaction: synthesis of 1,3,4-trisubstituted pyrazolo[3,4-b]pyridines, 3H-pyrazolo[3,4-c]isoquinolines and 3H-pyrazolo[4,3-f][1,7]naphthyridines. RSC Adv 2015. [DOI: 10.1039/c4ra17190j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A new approach for the synthesis of 1,3,4-trisubstituted pyrazolo[3,4-b]pyridines, 3H-pyrazolo[3,4-c]isoquinolines and 3H-pyrazolo[4,3-f][1,7]naphthyridines via an intramolecular Heck reaction is described.
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Affiliation(s)
- Rashmi Prakash
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Kommuri Shekarrao
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Pallabi Saikia
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Sanjib Gogoi
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
| | - Romesh C. Boruah
- Medicinal Chemistry Division
- North-East Institute of Science and Technology
- Jorhat
- India
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