1
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Wiese L, Kolbe SM, Weber M, Ludlow M, Christmann M. Synthesis and biological evaluation of cleistocaltone A, an inhibitor of respiratory syncytial virus (RSV). Chem Sci 2024; 15:10121-10125. [PMID: 38966381 PMCID: PMC11220581 DOI: 10.1039/d4sc01897d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 05/20/2024] [Indexed: 07/06/2024] Open
Abstract
The first chemical synthesis of the phloroglucinol meroterpenoid cleistocaltone A (1) is presented. This compound, previously isolated from Cleistocalyx operculatus was reported to show promising antiviral properties. Based on a modified biosynthesis proposal, a synthetic strategy was devised featuring an intramolecular Diels-Alder reaction and an epoxidation/elimination sequence to generate the allyl alcohol handle in the side chain. The strategy was successfully executed and synthetic cleistcaltone A was evaluated against a contemporary RSV-A strain.
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Affiliation(s)
- Lorenz Wiese
- Institute of Chemistry and Biochemistry, Freie Universität Berlin 14195 Berlin Germany
| | - Sophie M Kolbe
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover Foundation 30559 Hanover Germany
| | - Manuela Weber
- Institute of Chemistry and Biochemistry, Freie Universität Berlin 14195 Berlin Germany
| | - Martin Ludlow
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover Foundation 30559 Hanover Germany
| | - Mathias Christmann
- Institute of Chemistry and Biochemistry, Freie Universität Berlin 14195 Berlin Germany
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2
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Wang C, Lin J, Huang H, Ye C, Bao H. Regio- and Diastereoselective Radical Dimerization Reactions for the Construction of Benzo[ f]isoindole Dimers. Org Lett 2024; 26:2580-2584. [PMID: 38526484 DOI: 10.1021/acs.orglett.4c00587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
This study presents a novel approach for synthesizing benzo[f]isoindole dimers, which involves cascade cyclization and oxidative radical dimerization. Our method allows for the formation of up to five carbon-carbon bonds in a single reaction, exhibiting remarkable diastereoselectivity and regioselectivity. The mechanism and regioselectivity were investigated through a combination of experiments and calculations.
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Affiliation(s)
- Chuanchuan Wang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. of China
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Jingyi Lin
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. of China
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Haiyang Huang
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Changqing Ye
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
| | - Hongli Bao
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. of China
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3
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Li XZ, He YP, Wu H. Multicomponent Cyclizative 1,2-Rearrangement Enabled Enantioselective Construction of 2,2-Disubstituted Pyrrolinones. Angew Chem Int Ed Engl 2024; 63:e202317182. [PMID: 38150406 DOI: 10.1002/anie.202317182] [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: 11/12/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 12/29/2023]
Abstract
The 1,2-rearrangement reaction is one of the most important approaches to construct carbon-carbon bonds in organic synthesis. However, the development of catalytic asymmetric 1,2-rearrangements is still far from mature and often suffers from problems such as complex substrates, single product structure, and lack of synthetic application. Multicomponent reaction has been recognized as a robust tool for the synthesis of diverse and tunable products from readily available starting material. Conceptionally and practically, the development of multicomponent asymmetric 1,2-rearrangements is highly desirable. In this regard, we report herein a three-component benzilic acid-type rearrangement of 2,3-diketoesters, aromatic amines and aldehydes for the asymmetric construction of synthetically challenging pyrrolinones bearing aza-quaternary stereocenters. To the best of our knowledge, this reaction represents the first example of organocatalyzed multicomponent asymmetric 1,2-rearrangements.
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Affiliation(s)
- Xing-Zi Li
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
| | - Yu-Ping He
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
| | - Hua Wu
- Shanghai Frontiers Science Center for Drug Target Identification and Delivery, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai, 200240, China
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4
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Verma S, Paliwal S. Recent Developments and Applications of Biocatalytic and Chemoenzymatic Synthesis for the Generation of Diverse Classes of Drugs. Curr Pharm Biotechnol 2024; 25:448-467. [PMID: 37885105 DOI: 10.2174/0113892010238984231019085154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 08/26/2023] [Accepted: 09/19/2023] [Indexed: 10/28/2023]
Abstract
Biocatalytic and chemoenzymatic biosynthesis are powerful methods of organic chemistry that use enzymes to execute selective reactions and allow the efficient production of organic compounds. The advantages of these approaches include high selectivity, mild reaction conditions, and the ability to work with complex substrates. The utilization of chemoenzymatic techniques for the synthesis of complicated compounds has lately increased dramatically in the area of organic chemistry. Biocatalytic technologies and modern synthetic methods are utilized synergistically in a multi-step approach to a target molecule under this paradigm. Chemoenzymatic techniques are promising for simplifying access to essential bioactive compounds because of the remarkable regio- and stereoselectivity of enzymatic transformations and the reaction diversity of modern organic chemistry. Enzyme kits may include ready-to-use, reproducible biocatalysts. Its use opens up new avenues for the synthesis of active therapeutic compounds and aids in drug development by synthesizing active components to construct scaffolds in a targeted and preparative manner. This study summarizes current breakthroughs as well as notable instances of biocatalytic and chemoenzymatic synthesis. To assist organic chemists in the use of enzymes for synthetic applications, it also provides some basic guidelines for selecting the most appropriate enzyme for a targeted reaction while keeping aspects like cofactor requirement, solvent tolerance, use of whole cell or isolated enzymes, and commercial availability in mind.
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Affiliation(s)
- Swati Verma
- Department of Pharmacy, ITS College of Pharmacy, Muradnagar, Ghaziabad, India
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, 304022, Rajasthan, India
| | - Sarvesh Paliwal
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, 304022, Rajasthan, India
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5
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Fay N, Kouklovsky C, de la Torre A. Natural Product Synthesis: The Endless Quest for Unreachable Perfection. ACS ORGANIC & INORGANIC AU 2023; 3:350-363. [PMID: 38075446 PMCID: PMC10704578 DOI: 10.1021/acsorginorgau.3c00040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/24/2023] [Accepted: 09/25/2023] [Indexed: 06/13/2024]
Abstract
Total synthesis is a field in constant progress. Its practitioners aim to develop ideal synthetic strategies to build complex molecules. As such, they are both a driving force and a showcase of the progress of organic synthesis. In this Perspective, we discuss recent notable total syntheses. The syntheses selected herein are classified according to the key strategic considerations for each approach.
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Affiliation(s)
- Nicolas Fay
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 Avenue des Sciences, 91405 Orsay, France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 Avenue des Sciences, 91405 Orsay, France
| | - Aurélien de la Torre
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 17 Avenue des Sciences, 91405 Orsay, France
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6
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Kang G, Han S. Synthesis of Suffranidine B. J Am Chem Soc 2023. [PMID: 37917347 DOI: 10.1021/jacs.3c09969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Efficiently generating intricate molecular complexity is a coveted goal in organic synthesis. This can be realized through the implementation of inventive and audacious strategies coupled with the exploration and advancement of novel molecular reactivity pathways. Herein, we present a concise two-step synthesis of a high-oxidation state heterotrimeric securinega alkaloid, suffranidine B, from 2,3-dehydroallosecurinine and the vinylogous ketoaldehyde compound derived from kojic acid. Key to the success was the astute selection of appropriate acids during both the heterotrimerization and the desymmetrizing cyclization steps. This study underscores the value of biomimicry in the synthesis of complex natural products.
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Affiliation(s)
- Gyumin Kang
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea
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7
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French SA, Sumby CJ, Huang DM, George JH. Total Synthesis of Atrachinenins A and B. J Am Chem Soc 2022; 144:22844-22849. [DOI: 10.1021/jacs.2c09978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sarah A. French
- Department of Chemistry, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Christopher J. Sumby
- Department of Chemistry, The University of Adelaide, Adelaide, SA 5005, Australia
| | - David M. Huang
- Department of Chemistry, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Jonathan H. George
- Department of Chemistry, The University of Adelaide, Adelaide, SA 5005, Australia
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8
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Li LX, Min L, Yao TB, Ji SX, Qiao C, Tian PL, Sun J, Li CC. Total Synthesis of Yuzurine-type Alkaloid Daphgraciline. J Am Chem Soc 2022; 144:18823-18828. [PMID: 36198113 DOI: 10.1021/jacs.2c09548] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of daphgraciline has been achieved, which also represents the first example of the synthesis of Daphniphyllum yuzurine-type alkaloids (∼50 members). The unique bridged azabicyclo[4.3.1] ring system in the yuzurine-type subfamily was efficiently and diastereoselectively assembled via a mild type II [5+2] cycloaddition for the first time. The compact tetracyclic [6-7-5-5] skeleton was installed efficiently via an intramolecular Diels-Alder reaction, followed by a benzilic acid-type rearrangement. The synthetically challenging spiro tetrahydropyran moiety in the final product was installed diastereoselectively via a TiIII-mediated reductive epoxide coupling reaction. Potential access to enantioenriched daphgraciline is presented.
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Affiliation(s)
- Li-Xuan Li
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Long Min
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Tian-Bing Yao
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shu-Xiao Ji
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang Qiao
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Pei-Lin Tian
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.,Shenzhen Bay Laboratory, Shenzhen 518132, China
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9
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Hui C, Craggs L, Antonchick AP. Ring contraction in synthesis of functionalized carbocycles. Chem Soc Rev 2022; 51:8652-8675. [PMID: 36172989 DOI: 10.1039/d1cs01080h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbocycles are a key and widely present structural motif in organic compounds. The construction of structurally intriguing carbocycles, such as highly-strained fused rings, spirocycles or highly-functionalized carbocycles with congested stereocenters, remains challenging in organic chemistry. Cyclopropanes, cyclobutanes and cyclopentanes within such carbocycles can be synthesized through ring contraction. These ring contractions involve re-arrangement of and/or small molecule extrusion from a parental ring, which is either a carbocycle or a heterocycle of larger size. This review provides an overview of synthetic methods for ring contractions to form cyclopropanes, cyclobutanes and cyclopentanes en route to structurally intriguing carbocycles.
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Affiliation(s)
- Chunngai Hui
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany. .,Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Luke Craggs
- Nottingham Trent University, School of Science and Technology, Department of Chemistry and Forensics, Clifton Lane, NG11 8NS Nottingham, UK
| | - Andrey P Antonchick
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany. .,Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany.,Nottingham Trent University, School of Science and Technology, Department of Chemistry and Forensics, Clifton Lane, NG11 8NS Nottingham, UK
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10
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Cao PR, Li M, Zhang JS, Zheng YL, Chen J, Zhao YQ, Qi XD, Zhu PH, Gu YC, Kong LY, Yang MH. Epicoccanes A-D, Four Oxidative Dimers of Pyrogallol Analogues from Epicoccum nigrum. Org Lett 2022; 24:6789-6793. [PMID: 36094854 DOI: 10.1021/acs.orglett.2c02666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Epicoccanes A-D (1-4) are four novel metabolites of an endophytic fungus Epicoccum nigrum. Their distinct unprecedented structures are hypothesized as oxidative dimers of pyrogallol analogues. Compounds 1 and 2 possess a novel spirobicyclo[3.2.1]octane-6,1'-cyclopentane or -cyclohexane core skeleton. Compound 3 is of a unique cage-like pentacyclic system, which unusually contained three continuous spiro-carbons. Compound 4 is a highly rearranged dimer with five contiguous chiral centers. The absolute structures of 1 and 2 were deduced by electronic circular dichroism (ECD) calculations, and those of 3 and 4 were determined by X-ray crystallography. Compounds 1 and 4 showed potential antiliver fibrosis activity.
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Affiliation(s)
- Peng-Ran Cao
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Min Li
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Jing-Shu Zhang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Yi-Lei Zheng
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Jie Chen
- The Third People's Hospital of Kunming, 357 Wujing Road, Guandu District, Kunming 650000, People's Republic of China
| | - Yong-Qin Zhao
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xiao-Dong Qi
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Pan-Hu Zhu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Yu-Cheng Gu
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ming-Hua Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
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11
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Liu Q, Zhang D, Xu Y, Gao S, Gong Y, Cai X, Yao M, Yang X. Cloning and Functional Characterization of the Polyketide Synthases Based on Genome Mining of Preussia isomera XL-1326. Front Microbiol 2022; 13:819086. [PMID: 35602042 PMCID: PMC9116485 DOI: 10.3389/fmicb.2022.819086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 03/31/2022] [Indexed: 11/21/2022] Open
Abstract
Fungal polyketides (PKs) are one of the largest families of structurally diverse bioactive natural products biosynthesized by multidomain megasynthases, in which thioesterase (TE) domains act as nonequivalent decision gates determining both the shape and the yield of the polyketide intermediate. The endophytic fungus Preussia isomera XL-1326 was discovered to have an excellent capacity for secreting diverse bioactive PKs, i.e., the hot enantiomers (±)-preuisolactone A with antibacterial activity, the single-spiro minimoidione B with α-glucosidase inhibition activity, and the uncommon heptaketide setosol with antifungal activity, which drive us to illustrate how the unique PKs are biosynthesized. In this study, we first reported the genome sequence information of P. isomera. Based on genome mining, we discovered nine transcriptionally active genes encoding polyketide synthases (PKSs), Preu1–Preu9, of which those of Preu3, Preu4, and Preu6 were cloned and functionally characterized due to possessing complete sets of synthetic and release domains. Through heterologous expression in Saccharomyces cerevisiae, Preu3 and Preu6 could release high yields of orsellinic acid (OA) derivatives [3-methylorsellinic acid (3-MOA) and lecanoric acid, respectively]. Correspondingly, we found that Preu3 and Preu6 were clustered into OA derivative synthase groups by phylogenetic analysis. Next, with TE domain swapping, we constructed a novel “non-native” PKS, Preu6-TEPreu3, which shared a very low identity with OA synthase, OrsA, from Aspergillus nidulans but could produce a large amount of OA. In addition, with the use of Preu6-TEPreu3, we synthesized methyl 3-methylorsellinate (synthetic oak moss of great economic value) from 3-MOA as the substrate, and interestingly, 3-MOA exhibited remarkable antibacterial activities, while methyl 3-methylorsellinate displayed broad-spectrum antifungal activity. Taken together, we identified two novel PKSs to biosynthesize 3-MOA and lecanoric acid, respectively, with information on such kinds of PKSs rarely reported, and constructed one novel “non-native” PKS to largely biosynthesize OA. This work is our first step to explore the biosynthesis of the PKs in P. isomera, and it also provides a new platform for high-level environment-friendly production of OA derivatives and the development of new antimicrobial agents.
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Affiliation(s)
- Qingpei Liu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
| | - Dan Zhang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
| | - Yao Xu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
| | - Shuaibiao Gao
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
| | - Yifu Gong
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
| | - Xianhua Cai
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
| | - Ming Yao
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
| | - Xiaolong Yang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, China
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12
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Kinner A, Nerke P, Siedentop R, Steinmetz T, Classen T, Rosenthal K, Nett M, Pietruszka J, Lütz S. Recent Advances in Biocatalysis for Drug Synthesis. Biomedicines 2022; 10:964. [PMID: 35625702 PMCID: PMC9138302 DOI: 10.3390/biomedicines10050964] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/16/2022] [Accepted: 04/17/2022] [Indexed: 02/01/2023] Open
Abstract
Biocatalysis is constantly providing novel options for the synthesis of active pharmaceutical ingredients (APIs). In addition to drug development and manufacturing, biocatalysis also plays a role in drug discovery and can support many active ingredient syntheses at an early stage to build up entire scaffolds in a targeted and preparative manner. Recent progress in recruiting new enzymes by genome mining and screening or adapting their substrate, as well as product scope, by protein engineering has made biocatalysts a competitive tool applied in academic and industrial spheres. This is especially true for the advances in the field of nonribosomal peptide synthesis and enzyme cascades that are expanding the capabilities for the discovery and synthesis of new bioactive compounds via biotransformation. Here we highlight some of the most recent developments to add to the portfolio of biocatalysis with special relevance for the synthesis and late-stage functionalization of APIs, in order to bypass pure chemical processes.
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Affiliation(s)
- Alina Kinner
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Philipp Nerke
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Regine Siedentop
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Till Steinmetz
- Laboratory for Technical Biology, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (M.N.)
| | - Thomas Classen
- Institute of Bio- and Geosciences: Biotechnology (IBG-1), Forschungszentrum Jülich, 52428 Jülich, Germany; (T.C.); (J.P.)
| | - Katrin Rosenthal
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Markus Nett
- Laboratory for Technical Biology, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (M.N.)
| | - Jörg Pietruszka
- Institute of Bio- and Geosciences: Biotechnology (IBG-1), Forschungszentrum Jülich, 52428 Jülich, Germany; (T.C.); (J.P.)
- Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf Located at Forschungszentrum Jülich, 52426 Jülich, Germany
| | - Stephan Lütz
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
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13
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Abstract
Natural product synthesis remains one of the most vibrant and intellectually rewarding areas of chemistry, although the justifications for pursuing it have evolved over time. In the early years, the emphasis lay on structure elucidation and confirmation through synthesis, as exemplified by celebrated studies on cocaine, morphine, strychnine and chlorophyll. This was followed by a phase where the sheer demonstration that highly complex molecules could be recreated in the laboratory in a rational manner was enough to justify the economic expense and intellectual agonies of a synthesis. Since then, syntheses of natural products have served as platforms for the demonstration of elegant strategies, for inventing new methodology 'on the fly' or to demonstrate the usefulness and scope of methods established with simpler molecules. We now add another aspect that we find fascinating, viz. 'natural product anticipation'. In this Review, we survey cases where the synthesis of a compound in the laboratory has preceded its isolation from nature. The focus of our Review lies on examples where this anticipation of a natural product has triggered a successful search or where synthesis and isolation have occurred independently. Finally, we highlight cases where a potential natural product structure has been suggested as a result of synthetic endeavours but not yet confirmed by isolation, inviting further collaborations between synthetic and natural product chemists.
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14
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Novak AJE, Trauner D. Complex Natural Products Derived from Pyrogallols. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2022; 118:1-46. [PMID: 35416516 DOI: 10.1007/978-3-030-92030-2_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Pyrogallols (1,2,3-trihydroxybenzenes) are abundant in Nature, easily oxidized, and are central precursors to important natural products. The rich chemistry of their oxidized derivatives, the hydroxy-o-quinones, has been studied for over a century and still attracts the interest of the scientific community. Only in the last ten years have critical insights of pyrogallol chemistry from the mid-twentieth century been applied to modern natural product synthesis. Historical studies of pyrogallol chemistry, including [5+2], [4+2], and formal [5+5] cycloadditions are discussed here and reactivity guidelines established. The application and remarkable selectivity of these cycloadditions is then showcased in the recent syntheses of several fungal natural products, including dibefurin, epicolactone, the merocytochalasans, and preuisolactone A. The authors hope that this contribution will spark further interest in the fascinating chemistry of pyrogallols and natural products derived from them.
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Affiliation(s)
- Alexander J E Novak
- Department of Chemistry, New York University, 31 Washington Place, New York, NY, 10003, USA
| | - Dirk Trauner
- Department of Chemistry, New York University, 31 Washington Place, New York, NY, 10003, USA.
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15
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Hui C, Brieger L, Strohmann C, Antonchick AP. Stereoselective Synthesis of Cyclobutanes by Contraction of Pyrrolidines. J Am Chem Soc 2021; 143:18864-18870. [PMID: 34748319 PMCID: PMC8603356 DOI: 10.1021/jacs.1c10175] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Here we report a contractive synthesis of multisubstituted cyclobutanes containing multiple stereocenters from readily accessible pyrrolidines using iodonitrene chemistry. Mediated by a nitrogen extrusion process, the stereospecific synthesis of cyclobutanes involves a radical pathway. Unprecedented unsymmetrical spirocyclobutanes were prepared successfully, and a concise, formal synthesis of the cytotoxic natural product piperarborenine B is reported.
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Affiliation(s)
- Chunngai Hui
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany.,Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Lukas Brieger
- Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Carsten Strohmann
- Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
| | - Andrey P Antonchick
- Max Planck Institute of Molecular Physiology, Department of Chemical Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany.,Technical University Dortmund, Faculty of Chemistry and Chemical Biology, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany.,Nottingham Trent University, School of Science and Technology, Department of Chemistry and Forensics, Clifton Lane, NG11 8NS Nottingham, United Kingdom
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16
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Zask A, Ellestad GA. Reflections on the intriguing occurrence of some recently isolated natural products as racemates and scalemic mixtures. Chirality 2021; 33:915-930. [PMID: 34633708 DOI: 10.1002/chir.23360] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 12/12/2022]
Abstract
This review continues our interest in the intriguing reports of a variety of new racemic natural products (at least 11 in the past 4 years). These include the polyphenolic racemate galewone, the polycyclic prenylated acylphloroglucinol garcinielliptone; variecolortide, a combination of an anthraquinone and a isochinulin-type alkaloid; the isoindoline alkaloid irpexine, the new hybrid phenylproanoid asarone; colletopyandione an indolydenepyradione; the enantiomerically enriched (scalemic) neolignans, gardenifolins; and meroterpenoid pabmaragramin in addition to some marine lipids. We also present a recent biomimetic synthesis of the polyketide preuisolactone A; synthesis of the polyketide spiromamakone A, which also corrected the proposed structure of another metabolite as identical to spiromamakone A; and the melicolones A and B. The continuing reports of natural racemates provoke speculation as to their role in the producing organism.
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Affiliation(s)
- Arie Zask
- Department of Biological Sciences, Columbia University, New York, NY, USA
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17
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Abstract
[Figure: see text].
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Affiliation(s)
- Lu Cheng
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Key Laboratory of New Power Batteries, and Key Laboratory of Applied Photochemistry, Nanjing Normal University, Nanjing 210023, China.,School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Huihui Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Key Laboratory of New Power Batteries, and Key Laboratory of Applied Photochemistry, Nanjing Normal University, Nanjing 210023, China.,School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Hengrui Cai
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Key Laboratory of New Power Batteries, and Key Laboratory of Applied Photochemistry, Nanjing Normal University, Nanjing 210023, China.,School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Jie Zhang
- School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Xu Gong
- School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Wei Han
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Key Laboratory of New Power Batteries, and Key Laboratory of Applied Photochemistry, Nanjing Normal University, Nanjing 210023, China.,School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
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18
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Alabugin IV, Kuhn L, Medvedev MG, Krivoshchapov NV, Vil' VA, Yaremenko IA, Mehaffy P, Yarie M, Terent'ev AO, Zolfigol MA. Stereoelectronic power of oxygen in control of chemical reactivity: the anomeric effect is not alone. Chem Soc Rev 2021; 50:10253-10345. [PMID: 34263287 DOI: 10.1039/d1cs00386k] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Although carbon is the central element of organic chemistry, oxygen is the central element of stereoelectronic control in organic chemistry. Generally, a molecule with a C-O bond has both a strong donor (a lone pair) and a strong acceptor (e.g., a σ*C-O orbital), a combination that provides opportunities to influence chemical transformations at both ends of the electron demand spectrum. Oxygen is a stereoelectronic chameleon that adapts to the varying situations in radical, cationic, anionic, and metal-mediated transformations. Arguably, the most historically important stereoelectronic effect is the anomeric effect (AE), i.e., the axial preference of acceptor groups at the anomeric position of sugars. Although AE is generally attributed to hyperconjugative interactions of σ-acceptors with a lone pair at oxygen (negative hyperconjugation), recent literature reports suggested alternative explanations. In this context, it is timely to evaluate the fundamental connections between the AE and a broad variety of O-functional groups. Such connections illustrate the general role of hyperconjugation with oxygen lone pairs in reactivity. Lessons from the AE can be used as the conceptual framework for organizing disjointed observations into a logical body of knowledge. In contrast, neglect of hyperconjugation can be deeply misleading as it removes the stereoelectronic cornerstone on which, as we show in this review, the chemistry of organic oxygen functionalities is largely based. As negative hyperconjugation releases the "underutilized" stereoelectronic power of unshared electrons (the lone pairs) for the stabilization of a developing positive charge, the role of orbital interactions increases when the electronic demand is high and molecules distort from their equilibrium geometries. From this perspective, hyperconjugative anomeric interactions play a unique role in guiding reaction design. In this manuscript, we discuss the reactivity of organic O-functionalities, outline variations in the possible hyperconjugative patterns, and showcase the vast implications of AE for the structure and reactivity. On our journey through a variety of O-containing organic functional groups, from textbook to exotic, we will illustrate how this knowledge can predict chemical reactivity and unlock new useful synthetic transformations.
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Affiliation(s)
- Igor V Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA.
| | - Leah Kuhn
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA.
| | - Michael G Medvedev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation.,A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova St., 119991 Moscow, Russian Federation
| | - Nikolai V Krivoshchapov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation.,Lomonosov Moscow State University, Leninskie Gory 1 (3), Moscow, 119991, Russian Federation
| | - Vera A Vil'
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Ivan A Yaremenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Patricia Mehaffy
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, USA.
| | - Meysam Yarie
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65167, Iran
| | - Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation
| | - Mohammad Ali Zolfigol
- Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65167, Iran
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19
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Wu H, Ding Y, Hu K, Long X, Qu C, Puno PT, Deng J. Bioinspired Network Analysis Enabled Divergent Syntheses and Structure Revision of Pentacyclic Cytochalasans. Angew Chem Int Ed Engl 2021; 60:15963-15971. [PMID: 33860618 DOI: 10.1002/anie.202102831] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Indexed: 12/11/2022]
Abstract
We accomplished the divergent total syntheses of ten pentacyclic cytochalasans (aspergillin PZ, trichodermone, trichoderones, flavipesines, and flavichalasines) from a common precursor aspochalasin D and revised the structures of trichoderone B, spicochalasin A, flavichalasine C, aspergilluchalasin based on structure network analysis of the cytochalasans biosynthetic pathways and DFT calculations. The key steps of the syntheses include transannular alkene/epoxyalkene and carbonyl-ene cyclizations to establish the C/D ring of pentacyclic aspochalasans. Our bioinspired approach to these pentacyclic cytochalasans validate the proposed biosynthetic speculation from a chemical view and provide a platform for the synthesis of more than 400 valuable cytochalasans bearing different macrocycles and amino-acid residues.
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Affiliation(s)
- Hai Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yiming Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, China
| | - Xianwen Long
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Chunlei Qu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, China
| | - Jun Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming, 650201, China.,State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
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20
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Wu H, Ding Y, Hu K, Long X, Qu C, Puno P, Deng J. Bioinspired Network Analysis Enabled Divergent Syntheses and Structure Revision of Pentacyclic Cytochalasans. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hai Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
- University of Chinese Academy of Sciences Beijing 100049 China
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Yiming Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
- University of Chinese Academy of Sciences Beijing 100049 China
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
| | - Xianwen Long
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
- University of Chinese Academy of Sciences Beijing 100049 China
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Chunlei Qu
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
- University of Chinese Academy of Sciences Beijing 100049 China
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Pema‐Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
| | - Jun Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
- State Key Laboratory and Institute of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
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21
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Kahlert L, Bernardi D, Hauser M, Ióca LP, Berlinck RGS, Skellam EJ, Cox RJ. Early Oxidative Transformations During the Biosynthesis of Terrein and Related Natural Products. Chemistry 2021; 27:11895-11903. [PMID: 34114710 PMCID: PMC8453496 DOI: 10.1002/chem.202101447] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Indexed: 01/09/2023]
Abstract
The mycotoxin terrein is derived from the C10‐precursor 6‐hydroxymellein (6‐HM) via an oxidative ring contraction. Although the corresponding biosynthetic gene cluster (BGC) has been identified, details of the enzymatic oxidative transformations are lacking. Combining heterologous expression and in vitro studies we show that the flavin‐dependent monooxygenase (FMO) TerC catalyzes the initial oxidative decarboxylation of 6‐HM. The reactive intermediate is further hydroxylated by the second FMO TerD to yield a highly oxygenated aromatic species, but further reconstitution of the pathway was hampered. A related BGC was identified in the marine‐derived Roussoella sp. DLM33 and confirmed by heterologous expression. These studies demonstrate that the biosynthetic pathways of terrein and related (polychlorinated) congeners diverge after oxidative decarboxylation of the lactone precursor that is catalyzed by a conserved FMO and further indicate that early dehydration of the side chain is an essential step.
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Affiliation(s)
- Lukas Kahlert
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Darlon Bernardi
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany.,Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, CEP, 13560-970, São Carlos, SP, Brazil
| | - Maurice Hauser
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany
| | - Laura P Ióca
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, CEP, 13560-970, São Carlos, SP, Brazil
| | - Roberto G S Berlinck
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, CEP, 13560-970, São Carlos, SP, Brazil
| | - Elizabeth J Skellam
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany.,Department of Chemistry & BioDiscovery Institute, University of North Texas, 1155 Union Circle 305220, Denton, Texas, 76203, USA
| | - Russell J Cox
- Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover, Schneiderberg 38, 30167, Hannover, Germany
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22
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He YP, Wu H, Wang Q, Zhu J. Catalytic Enantioselective Synthesis of Morpholinones Enabled by Aza-Benzilic Ester Rearrangement. J Am Chem Soc 2021; 143:7320-7325. [PMID: 33955753 DOI: 10.1021/jacs.1c03915] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chiral morpholinone is an important building block in organic synthesis and a pharmacophore in medicinal chemistry. However, catalytic enantioselective methods for the construction of this N,O-heterocycle remain scarce. We report herein a chiral phosphoric acid-catalyzed enantioselective synthesis of C3-substituted morpholinones from aryl/alkylglyoxals and 2-(arylamino)ethan-1-ols. The reaction proceeds through a domino [4 + 2] heteroannulation followed by a 1,2-aryl/alkyl shift of the resulting cyclic α-iminium hemiacetals. It represents formally an unprecedented asymmetric aza-benzilic ester rearrangement reaction. A concise synthesis of L-742,694, a neurokinin-1 receptor antagonist, featuring this reaction is documented.
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Affiliation(s)
- Yu-Ping He
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Hua Wu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland.,School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
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23
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Zhang H, Novak AJE, Jamieson CS, Xue XS, Chen S, Trauner D, Houk KN. Computational Exploration of the Mechanism of Critical Steps in the Biomimetic Synthesis of Preuisolactone A, and Discovery of New Ambimodal (5 + 2)/(4 + 2) Cycloadditions. J Am Chem Soc 2021; 143:6601-6608. [PMID: 33887906 PMCID: PMC11321821 DOI: 10.1021/jacs.1c01856] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Computational studies with ωB97X-D density functional theory of the mechanisms of the steps in Trauner's biomimetic synthesis of preuisolactone A have elaborated and refined mechanisms of several unique processes. An ambimodal transition state has been identified for the cycloaddition between an o-quinone and a hydroxy-o-quinone; this leads to both (5 + 2) (with H shift) and (4 + 2) cycloaddition products, which can in principle interconvert via α-ketol rearrangements. The origins of periselectivity of this ambimodal cycloaddition have been investigated computationally with molecular dynamics simulations and tested further by an experimental study. In the presence of bicarbonate ions, the deprotonated hydroxy-o-quinone leads to only the (5 + 2) cycloaddition adduct. A new mechanism for a benzilic acid rearrangement resulting in ring contraction is proposed.
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Affiliation(s)
- Hong Zhang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Alexander J E Novak
- Department of Chemistry, New York University, Silver Center, 100 Washington Square East, Room 712, New York, New York 10002, United States
| | - Cooper S Jamieson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Xiao-Song Xue
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Shuming Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Dirk Trauner
- Department of Chemistry, New York University, Silver Center, 100 Washington Square East, Room 712, New York, New York 10002, United States
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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24
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Delayre B, Wang Q, Zhu J. Natural Product Synthesis Enabled by Domino Processes Incorporating a 1,2-Rearrangement Step. ACS CENTRAL SCIENCE 2021; 7:559-569. [PMID: 34056086 PMCID: PMC8155462 DOI: 10.1021/acscentsci.1c00075] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Indexed: 05/07/2023]
Abstract
The art of natural product total synthesis is closely associated with two major determinants: the development/application of novel chemical reactions and the innovation in strategic use of classic organic reactions. While purposely seeking/applying a new synthetic methodology allowing nonconventional bond disconnections could shorten the synthetic route, the development of domino processes composed of a series of well-established reactions could also lead to a concise, practical, and aesthetically appealing synthesis. As an important class of textbook reactions, the 1,2-anionotropic rearrangements discovered at the dawn of modern organic chemistry have important bearings not only on chemical synthesis but also on the conceptual breakthroughs in the field. In its basic form, the 1,2-shift affords nothing but a constitutional isomer of the starting material and is therefore not a complexity-generating transformation. However, such a simple 1,2-shift could in fact change the molecular topology if the precursor is cleverly designed. More dramatically, it can metamorphosize the structure of the substrate when it is combined with other transformations in a domino sequence. In this Outlook, we highlight recent examples of natural product synthesis featuring a key domino process incorporating a 1,2-anionotropic rearrangement. Specifically, domino reactions integrating Wagner-Meerwein, pinacol, α-ketol, α-aminoketone, α-iminol, or benzilic acid rearrangements will be discussed.
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25
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Brandau NM, Wiget PA. Bicyclic cycloadduct fragmentations as a means of stereocontrol. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Sun J, Yang H, Tang W. Recent advances in total syntheses of complex dimeric natural products. Chem Soc Rev 2021; 50:2320-2336. [PMID: 33470268 DOI: 10.1039/d0cs00220h] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dimeric natural products are a collection of molecules with diverse molecular architectures and significant bio-activities. In this tutorial review, total synthesis of complex dimeric natural products accomplished in recent years are summarized and various dimerization strategies are discussed. By highlighting the selected representative examples, this review aims to demonstrate the recent tactics of dimerization which is an important process integrated into the whole synthetic sequences of dimeric natural products, provide insights on structural and chemical properties of monomers and dimers of related natural products, and promote further technological advances in organic synthesis and biological studies of complex dimeric natural products.
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Affiliation(s)
- Jiawei Sun
- State Key Laboratory of Bio-Organic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
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27
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Abstract
The focus article discusses the innovation of hypervalent(iii) iodine regarding skeletal rearrangement, cycloaddition and cyclization, and sp3 C–H functionalization in natural product synthesis.
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Affiliation(s)
- Zhuo Wang
- Southern University of Science and Technology
- School of Medicine
- Shenzhen
- People's Republic of China
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28
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29
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Zhang W, Zhou ZX, Zhu XJ, Sun ZH, Dai WM, Li CC. Asymmetric Total Synthesis of the Highly Strained 4β-Acetoxyprobotryane-9β,15α-diol. J Am Chem Soc 2020; 142:19868-19873. [DOI: 10.1021/jacs.0c10116] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Wen Zhang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Zi-Xiong Zhou
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xu-Jiang Zhu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhang-Hua Sun
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wei-Min Dai
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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30
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Fernandes RA, Kumar P, Choudhary P. Evolution of Strategies in Protecting‐Group‐Free Synthesis of Natural Products: A Recent Update. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Rodney A. Fernandes
- Department of Chemistry Indian Institute of Technology Bombay 400076 Mumbai, Powai Maharashtra India
| | - Praveen Kumar
- Department of Chemistry Indian Institute of Technology Bombay 400076 Mumbai, Powai Maharashtra India
| | - Priyanka Choudhary
- Department of Chemistry Indian Institute of Technology Bombay 400076 Mumbai, Powai Maharashtra India
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31
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Schneider M, Richter MJR, Carreira EM. Total Synthesis of (-)-Mitrephorone A Enabled by Stereoselective Nitrile Oxide Cycloaddition and Tetrasubstituted Olefin Synthesis. J Am Chem Soc 2020; 142:17802-17809. [PMID: 33021371 PMCID: PMC7564100 DOI: 10.1021/jacs.0c09520] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
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A highly enantioselective and
diastereoselective total
synthesis of the diterpenoid (−)-mitrephorone A is presented.
Key to the synthesis are stereocontrolled 1,4-semihydrogenation
of a 1,3-diene to a tetrasubstituted double bond, enzyme-catalyzed
malonate desymmetrization, and highly diastereoselective nitrile
oxide cycloaddition. The streamlined strategy is a considerable improvement
to those reported earlier in terms of diastereo- and enantioselectivity.
For the first time, the combination of modern Pd-cross-coupling with
Cr-catalyzed reduction allows for rapid access to tetrasubstituted
olefins with full stereocontrol.
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Affiliation(s)
| | | | - Erick M Carreira
- ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093 Zürich, Switzerland
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32
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Affiliation(s)
- Hua Wu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne EPFL-SB-ISIC-LSPN BCH 5304 1015 Lausanne Switzerland
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33
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Biosynthetically Inspired Syntheses of Secu′amamine A and Fluvirosaones A and B. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Lee S, Kang G, Chung G, Kim D, Lee H, Han S. Biosynthetically Inspired Syntheses of Secu′amamine A and Fluvirosaones A and B. Angew Chem Int Ed Engl 2020; 59:6894-6901. [DOI: 10.1002/anie.201916613] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/08/2020] [Indexed: 01/18/2023]
Affiliation(s)
- Sanghyeon Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Gyumin Kang
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon FunctionalizationsInstitute for Basic Science (IBS) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Garam Chung
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon FunctionalizationsInstitute for Basic Science (IBS) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Hee‐Yoon Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Sunkyu Han
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon FunctionalizationsInstitute for Basic Science (IBS) 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
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35
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Wu H, Wang Q, Zhu J. Catalytic Enantioselective Benzilic Ester Rearrangement. Angew Chem Int Ed Engl 2020; 59:7261-7265. [PMID: 32078228 DOI: 10.1002/anie.202001258] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Indexed: 12/29/2022]
Abstract
We report the first examples of catalytic enantioselective benzilic ester rearrangement reaction. In the presence of a catalytic amount of Cu(OTf)2 and a chiral box ligand under mild conditions, reaction of 2,3-diketoesters with alcohols afforded structurally diverse α-aryl(alkyl) substituted-α-hydroxy malonates (tartronic esters) in good to excellent yields with high enantioselectivities. Preliminary mechanistic studies indicated that hemiketalization, rather than the dynamic kinetic resolution of hemiketal, was the enantiodetermining step under our reaction conditions.
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Affiliation(s)
- Hua Wu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
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36
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Wang WL, Liu XQ, Zhang MH, Lin B, Zhu DR, Li LN, Chen C, Han C, Luo JG, Kong LY. Taxodisones A and B: bioactive C30-terpenes with new skeletons from Taxodium distichum and their biosynthetic origin. Chem Commun (Camb) 2020; 56:3329-3332. [DOI: 10.1039/c9cc09433d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, taxodisones A and B were isolated from the seeds of T. distichum, and the structures, configurations, bioactivities and origin of these compounds were determined.
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37
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Long Y, Ding Y, Wu H, Qu C, Liang H, Zhang M, Zhao X, Long X, Wang S, Puno P, Deng J. Total Synthesis of (−)‐Perezoperezone through an Intermolecular [5+2] Homodimerization of Hydroxy
p
‐Quinone. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yang Long
- Department of Medicinal Natural ProductsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
| | - Yiming Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hai Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chunlei Qu
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hong Liang
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Min Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiaoli Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xianwen Long
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shu Wang
- Department of Medicinal Natural ProductsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Pema‐Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
| | - Jun Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
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38
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Long Y, Ding Y, Wu H, Qu C, Liang H, Zhang M, Zhao X, Long X, Wang S, Puno P, Deng J. Total Synthesis of (−)‐Perezoperezone through an Intermolecular [5+2] Homodimerization of Hydroxy
p
‐Quinone. Angew Chem Int Ed Engl 2019; 58:17552-17557. [PMID: 31608523 DOI: 10.1002/anie.201911978] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/11/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Yang Long
- Department of Medicinal Natural ProductsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
| | - Yiming Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hai Wu
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Chunlei Qu
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hong Liang
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Min Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiaoli Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xianwen Long
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shu Wang
- Department of Medicinal Natural ProductsWest China School of PharmacySichuan University Chengdu 610041 P. R. China
| | - Pema‐Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
| | - Jun Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West ChinaYunnan Key Laboratory of Natural Medicinal ChemistryKunming Institute of BotanyChinese Academy of Sciences 132 Lanhei Road Kunming China
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39
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Hill RA, Sutherland A. Hot off the Press. Nat Prod Rep 2019. [DOI: 10.1039/c9np90045d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A personal selection of 32 recent papers is presented covering various aspects of current developments in bioorganic chemistry and novel natural products such as burlemarxione A from Clusia burle-marxii.
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