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Wang T, Zhang M, Zheng Y, Seong J, Lah MS, Koo S. Furan oxidation by Mn(iii)/Co(ii) catalysts - application to benzofuran synthesis. RSC Adv 2021; 11:31395-31399. [PMID: 35496848 PMCID: PMC9041371 DOI: 10.1039/d1ra05305a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/11/2021] [Indexed: 11/21/2022] Open
Abstract
Furans containing a β-ketoester group at 2-position undergo oxidative ring-opening by Mn(iii)/Co(ii) catalysts under an O2 atmosphere to produce 1,4-dicarbonyl moieties through an endoperoxide intermediate, which consecutively cyclized with the β-ketoester unit to afford 4-hydroxy-2-cyclohexen-1-ones. This oxidation/cyclization products were efficiently transformed into versatile benzofuran derivatives after consecutive aromatization and Paal-Knorr reaction.
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Affiliation(s)
- Tingshu Wang
- School of Pharmacy, East China University of Science and Technology Meilong Road 130 Shanghai 200237 P. R. of China
- Department of Energy Science and Technology, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
| | - Miao Zhang
- School of Pharmacy, East China University of Science and Technology Meilong Road 130 Shanghai 200237 P. R. of China
- Department of Energy Science and Technology, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
| | - Yifan Zheng
- School of Pharmacy, East China University of Science and Technology Meilong Road 130 Shanghai 200237 P. R. of China
- Department of Chemistry, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
| | - Junmo Seong
- Department of Chemistry, Ulsan National Institute of Science and Technology UNIST-gil 50 Ulsan 44919 Korea
| | - Myoung Soo Lah
- Department of Chemistry, Ulsan National Institute of Science and Technology UNIST-gil 50 Ulsan 44919 Korea
| | - Sangho Koo
- School of Pharmacy, East China University of Science and Technology Meilong Road 130 Shanghai 200237 P. R. of China
- Department of Energy Science and Technology, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
- Department of Chemistry, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
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Yang Z, Tan Q, Jiang Y, Yang J, Su X, Qiao Z, Zhou W, He L, Qiu H, Zhang M. Asymmetric Total Synthesis of Sarpagine and Koumine Alkaloids. Angew Chem Int Ed Engl 2021; 60:13105-13111. [PMID: 33783073 DOI: 10.1002/anie.202102416] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/24/2021] [Indexed: 12/23/2022]
Abstract
We report here a concise, collective, and asymmetric total synthesis of sarpagine alkaloids and biogenetically related koumine alkaloids, which structurally feature a rigid cage scaffold, with L-tryptophan as the starting material. Two key bridged skeleton-forming reactions, namely tandem sequential oxidative cyclopropanol ring-opening cyclization and ketone α-allenylation, ensure concurrent assembly of the caged sarpagine scaffold and installation of requisite derivative handles. With a common caged intermediate as the branch point, by taking advantage of ketone and allene groups therein, total synthesis of five sarpagine alkaloids (affinisine, normacusine B, trinervine, Na -methyl-16-epipericyclivine, and vellosimine) with various substituents and three koumine alkaloids (koumine, koumimine, and N-demethylkoumine) with more complex cage scaffolds has been accomplished.
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Affiliation(s)
- Zhao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Qiuyuan Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Yan Jiang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Jiaojiao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Xiaojiao Su
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Zhen Qiao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Wenqiang Zhou
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Ling He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Hanyue Qiu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Centre, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
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3
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Yang Z, Tan Q, Jiang Y, Yang J, Su X, Qiao Z, Zhou W, He L, Qiu H, Zhang M. Asymmetric Total Synthesis of Sarpagine and Koumine Alkaloids. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Qiuyuan Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Yan Jiang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Jiaojiao Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Xiaojiao Su
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Zhen Qiao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Wenqiang Zhou
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Ling He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Hanyue Qiu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Centre School of Pharmaceutical Sciences Chongqing University 55 Daxuecheng South Road, Shapingba Chongqing 401331 China
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Tymann DC, Benedix L, Iovkova L, Pallach R, Henke S, Tymann D, Hiersemann M. Photochemical Approach to the Cyclohepta[b]indole Scaffold by Annulative Two-Carbon Ring-Expansion. Chemistry 2020; 26:11974-11978. [PMID: 32463529 PMCID: PMC7540574 DOI: 10.1002/chem.202002581] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Indexed: 12/12/2022]
Abstract
We report on the implementation of the concept of a photochemically elicited two-carbon homologation of a π-donor-π-acceptor substituted chromophore by triple-bond insertion. Implementing a phenyl connector between the slide-in module and the chromophore enabled the synthesis of cylohepta[b]indole-type building blocks by a metal-free annulative one-pot two-carbon ring expansion of the five-membered chromophore. Post-irradiative structural elaboration provided founding members of the indolo[2,3-d]tropone family of compounds. Control experiments in combination with computational chemistry on this multibond reorganization process founded the basis for a mechanistic hypothesis.
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Affiliation(s)
| | - Lars Benedix
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Lyuba Iovkova
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Roman Pallach
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Sebastian Henke
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - David Tymann
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
| | - Martin Hiersemann
- Fakultät für Chemie und Chemische BiologieTU Dortmund44227DortmundGermany
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Liu X, Wang C, Zhang Y, Qiao Y, Pan Y, Ma L. Selective Preparation of 4-Alkylphenol from Lignin-Derived Phenols and Raw Biomass over Magnetic Co-Fe@N-Doped Carbon Catalysts. CHEMSUSCHEM 2019; 12:4791-4798. [PMID: 31453661 DOI: 10.1002/cssc.201901578] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/27/2019] [Indexed: 06/10/2023]
Abstract
Lignin valorization to produce high-value chemicals selectively is an enormous challenge in biorefinery. In this study, 4-alkylphenol, formed by breaking the robust Caryl -OCH3 bonds solely with the retention of other structures in lignin-derived methoxylalkylphenols, was produced selectively over a Co1 -Fe0.1 @NC catalyst from real lignin oil as feedstock, which was obtained by a "lignin-first" strategy from either birch or cornstalk. A yield of 64.7 or 88.3 mol % of 4-propylphenol was obtained if birch lignin oil or eugenol was used as the substrate, respectively. The catalysts were characterized by using methods that include Brunauer-Emmett-Teller measurements, XRD, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, high-angle annular dark-field scanning transmission electron microscopy, energy-dispersive X-ray spectroscopy, and temperature-programmed desorption with synchrotron vacuum ultraviolet photoionization mass spectrometry. The results of catalyst characterization and comparison experiments indicated that CoNx was the main active phase for demethoxylation and hydrogenation, and the incorporation of Fe weakens the adsorption of 4-propylphenol to the catalyst, which inhibits the excessive hydrogenation of 4-propylphenol. This work shows the potential to produce high-value-added 4-alkylphenol from renewable raw biomass.
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Affiliation(s)
- Xiaohao Liu
- CAS Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Chenguang Wang
- CAS Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, P.R. China
| | - Ying Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P.R. China
| | - Yan Qiao
- Shanxi Engineering Research Center of Biorefinery, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P.R. China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, P.R. China
| | - Longlong Ma
- CAS Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
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