1
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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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2
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Shaashua O, Pollok D, Dyadyuk A, Shames AI, Waldvogel SR, Pappo D. Dynamic Thermodynamic Resolution of Racemic 1,1'-Binaphthyl-2,2'-diol (BINOL). Org Lett 2024; 26:2129-2134. [PMID: 38446080 DOI: 10.1021/acs.orglett.4c00520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
A dynamic thermodynamic resolution method for converting (R/S)-BINOL (1,1'-binaphthyl-2,2'-diol) into (R)-BINOL in 100% theoretical yield is reported. This technique involves mixing (R/S)-BINOL with N-benzyl cinchonidinium bromide (1 equiv) and a [Cu2(tmeda)2(μ-OH)2]Br2 (2.5 mol %) redox catalyst in acetonitrile. In the background of this process is the observation that the energy for atropoisomerization decreases significantly when an electron is removed from BINOL. Therefore, it is possible to convert both enantiomers into the thermodynamically favorable [N-benzyl cinchonidinium bromide·(R)-BINOL] adduct.
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Affiliation(s)
- Omer Shaashua
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Dennis Pollok
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Alina Dyadyuk
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Alexander I Shames
- Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Siegfried R Waldvogel
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Doron Pappo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
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3
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Verma K, Mishra M, Maharana PK, Bhattacharyya H, Saha S, Punniyamurthy T. Sc(OTf) 3-Catalyzed Domino C-C/C-N Bond Formation of Aziridines with Quinones via Radical Pathway. Org Lett 2023; 25:7933-7938. [PMID: 37874042 DOI: 10.1021/acs.orglett.3c03318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Sc(III)-catalyzed domino C-C and C-N bond formation of N-sulfonyl aziridines with quinones has been accomplished to furnish functionalized indolines at a moderate temperature. The umpolung reactivity of aziridines, radical pathway, mild reaction conditions, substrate scope, and coupling of drug molecules in a postsynthetic application are the important practical features.
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Affiliation(s)
- Kshitiz Verma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Manmath Mishra
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Prabhat Kumar Maharana
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Hemanga Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Sharajit Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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4
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Hao W, Bay KL, Harris CF, King DS, Guzei IA, Aristov MM, Zhuang Z, Plata RE, Hill DE, Houk KN, Berry JF, Yu JQ, Blackmond DG. Probing Catalyst Speciation in Pd-MPAAM-Catalyzed Enantioselective C(sp 3)–H Arylation: Catalyst Improvement via Destabilization of Off-Cycle Species. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02805] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Wei Hao
- Department of Chemistry, Scripps Research, La Jolla, California 92037 United States
| | - Katherine L. Bay
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Caleb F. Harris
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Daniel S. King
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Ilia A. Guzei
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Michael M. Aristov
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Zhe Zhuang
- Department of Chemistry, Scripps Research, La Jolla, California 92037 United States
| | - R. Erik Plata
- Department of Chemistry, Scripps Research, La Jolla, California 92037 United States
| | - David E. Hill
- Department of Chemistry, Scripps Research, La Jolla, California 92037 United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - John F. Berry
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Jin-Quan Yu
- Department of Chemistry, Scripps Research, La Jolla, California 92037 United States
| | - Donna G. Blackmond
- Department of Chemistry, Scripps Research, La Jolla, California 92037 United States
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5
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Piras M, Patruno I, Nikolakopoulou C, Willment JA, Sloan NL, Zanato C, Brown GD, Zanda M. Synthesis of the Fungal Metabolite YWA1 and Related Constructs as Tools to Study MelLec-Mediated Immune Response to Aspergillus Infections†. J Org Chem 2021; 86:6044-6055. [PMID: 33884881 DOI: 10.1021/acs.joc.0c02324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the chemical synthesis of the fungal naphthopyrones YWA1 and fonsecin B, as well as their functionalization with an amine-spacer arm and the conjugation of the resulting molecules to three different functional tags (i.e., biotin, Oregon green, 1-[3-(succinimidyloxycarbonyl)benzyl]-4-[5-(4-methoxyphenyl)-2-oxazolyl]pyridinium bromide (PyMPO)). The naphthopyrone-biotin and -PyMPO constructs maintained the ability to bind the C-type lectin receptor MelLec, whose interaction with immunologically active fungal metabolites (i.e., 1,8-dihydroxynaphthalene-(DHN)-melanin and YWA1) is a key step in host recognition and induction of protective immune responses against Aspergillus fumigatus. The fluorescent Fonsecin B-PyMPO construct 21 was used to selectively visualize MelLec-expressing cells, thus validating the potential of this strategy for studying the role and functions of MelLec in immunity.
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Affiliation(s)
- Monica Piras
- Kosterlitz Centre for Therapeutics, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, U.K
| | - Ilaria Patruno
- Kosterlitz Centre for Therapeutics, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, U.K
| | - Christina Nikolakopoulou
- Aberdeen Fungal Group, MRC Centre for Medical Mycology, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, U.K.,Medical Research Council Centre for Medical Mycology at the University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, U.K
| | - Janet A Willment
- Aberdeen Fungal Group, MRC Centre for Medical Mycology, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, U.K.,Medical Research Council Centre for Medical Mycology at the University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, U.K
| | - Nikki L Sloan
- Chemistry Department, Loughborough University, Loughborough LE113TU, U.K
| | - Chiara Zanato
- CY Cergy Paris Université, CNRS, BioCIS, 95000 Cergy Pontoise, France
| | - Gordon D Brown
- Aberdeen Fungal Group, MRC Centre for Medical Mycology, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, U.K.,Medical Research Council Centre for Medical Mycology at the University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, U.K
| | - Matteo Zanda
- Kosterlitz Centre for Therapeutics, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, U.K.,Chemistry Department, Loughborough University, Loughborough LE113TU, U.K.,C.N.R.-SCITEC, via Mancinelli 7, 20131 Milan, Italy
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6
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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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7
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Salazar CA, Flesch KN, Haines BE, Zhou PS, Musaev DG, Stahl SS. Tailored quinones support high-turnover Pd catalysts for oxidative C-H arylation with O 2. Science 2020; 370:1454-1460. [PMID: 33214286 DOI: 10.1126/science.abd1085] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 10/12/2020] [Accepted: 11/09/2020] [Indexed: 02/04/2023]
Abstract
Palladium(II)-catalyzed carbon-hydrogen (C-H) oxidation reactions could streamline the synthesis of pharmaceuticals, agrochemicals, and other complex organic molecules. Existing methods, however, commonly exhibit poor catalyst performance with high palladium (Pd) loading (e.g., 10 mole %) and a need for (super)stoichiometric quantities of undesirable oxidants, such as benzoquinone and silver(I) salts. The present study probes the mechanism of a representative Pd-catalyzed oxidative C-H arylation reaction and elucidates mechanistic features that undermine catalyst performance, including substrate-consuming side reactions and sequestration of the catalyst as an inactive species. Systematic tuning of the quinone cocatalyst overcomes these deleterious features. Use of 2,5-di-tert-butyl-p-benzoquinone enables efficient use of molecular oxygen as the oxidant, high reaction yields, and >1900 turnovers by the Pd catalyst.
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Affiliation(s)
- Chase A Salazar
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Kaylin N Flesch
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Brandon E Haines
- Cherry L. Emerson Center for Scientific Computation, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA
| | - Philip S Zhou
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Djamaladdin G Musaev
- Cherry L. Emerson Center for Scientific Computation, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA.
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8
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Daley SK, Downer-Riley N. The biomimetic synthesis of balsaminone A and ellagic acid via oxidative dimerization. Beilstein J Org Chem 2020; 16:2026-2031. [PMID: 32874349 PMCID: PMC7445397 DOI: 10.3762/bjoc.16.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 08/06/2020] [Indexed: 11/23/2022] Open
Abstract
The application of oxidative dimerization for the biomimetic synthesis of balsaminone A and ellagic acid is described. Balsaminone A is synthesized via the oxidative dimerization of 1,2,4-trimethoxynaphthalene under anhydrous conditions using CAN, PIDA in BF3·OEt2 or PIFA in BF3·OEt2 in 7–8% yields over 3 steps. Ellagic acid is synthesized from its biosynthetic precursor gallic acid, in 83% yield over 2 steps.
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Affiliation(s)
- Sharna-kay Daley
- Department of Chemistry, The University of the West Indies, Mona, Jamaica
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9
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Shao Q, Wu K, Zhuang Z, Qian S, Yu JQ. From Pd(OAc) 2 to Chiral Catalysts: The Discovery and Development of Bifunctional Mono-N-Protected Amino Acid Ligands for Diverse C-H Functionalization Reactions. Acc Chem Res 2020; 53:833-851. [PMID: 32227915 DOI: 10.1021/acs.accounts.9b00621] [Citation(s) in RCA: 228] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The functionalization of unactivated carbon-hydrogen bonds is a transformative strategy for the rapid construction of molecular complexity given the ubiquitous presence of C-H bonds in organic molecules. It represents a powerful tool for accelerating the synthesis of natural products and bioactive compounds while reducing the environmental and economic costs of synthesis. At the same time, the ubiquity and strength of C-H bonds also present major challenges toward the realization of transformations that are both highly selective and efficient. The development of practical C-H functionalization reactions has thus remained a compelling yet elusive goal in organic chemistry for over a century.Specifically, the capability to form useful new C-C, C-N, C-O, and C-X bonds via direct C-H functionalization would have wide-ranging impacts in organic synthesis. Palladium is especially attractive as a catalyst for such C-H functionalizations because of the diverse reactivity of intermediate palladium-carbon bonds. Early efforts using cyclopalladation with Pd(OAc)2 and related salts led to the development of many Pd-catalyzed C-H functionalization reactions. However, Pd(OAc)2 and other simple Pd salts perform only racemic transformations, which prompted a long search for effective chiral catalysts dating back to the 1970s. Pd salts also have low reactivity with synthetically useful substrates. To address these issues, effective and reliable ligands capable of accelerating and improving the selectivity of Pd-catalyzed C-H functionalizations are needed.In this Account, we highlight the discovery and development of bifunctional mono-N-protected amino acid (MPAA) ligands, which make great strides toward addressing these two challenges. MPAAs enable numerous Pd(II)-catalyzed C(sp2)-H and C(sp3)-H functionalization reactions of synthetically relevant substrates under operationally practical conditions with excellent stereoselectivity when applicable. Mechanistic studies indicate that MPAAs operate as unique bifunctional ligands for C-H activation in which both the carboxylate and amide are coordinated to Pd. The N-acyl group plays an active role in the C-H cleavage step, greatly accelerating C-H activation. The rigid MPAA chelation also results in a predictable transfer of chiral information from a single chiral center on the ligand to the substrate and permits the development of a rational stereomodel to predict the stereochemical outcome of enantioselective reactions.We also describe the application of MPAA-enabled C-H functionalization in total synthesis and provide an outlook for future development in this area. We anticipate that MPAAs and related next-generation ligands will continue to stimulate development in the field of Pd-catalyzed C-H functionalization.
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Affiliation(s)
- Qian Shao
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Kevin Wu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Zhe Zhuang
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Shaoqun Qian
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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10
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Lautié E, Russo O, Ducrot P, Boutin JA. Unraveling Plant Natural Chemical Diversity for Drug Discovery Purposes. Front Pharmacol 2020; 11:397. [PMID: 32317969 PMCID: PMC7154113 DOI: 10.3389/fphar.2020.00397] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 03/16/2020] [Indexed: 12/11/2022] Open
Abstract
The screening and testing of extracts against a variety of pharmacological targets in order to benefit from the immense natural chemical diversity is a concern in many laboratories worldwide. And several successes have been recorded in finding new actives in natural products, some of which have become new drugs or new sources of inspiration for drugs. But in view of the vast amount of research on the subject, it is surprising that not more drug candidates were found. In our view, it is fundamental to reflect upon the approaches of such drug discovery programs and the technical processes that are used, along with their inherent difficulties and biases. Based on an extensive survey of recent publications, we discuss the origin and the variety of natural chemical diversity as well as the strategies to having the potential to embrace this diversity. It seemed to us that some of the difficulties of the area could be related with the technical approaches that are used, so the present review begins with synthetizing some of the more used discovery strategies, exemplifying some key points, in order to address some of their limitations. It appears that one of the challenges of natural product-based drug discovery programs should be an easier access to renewable sources of plant-derived products. Maximizing the use of the data together with the exploration of chemical diversity while working on reasonable supply of natural product-based entities could be a way to answer this challenge. We suggested alternative ways to access and explore part of this chemical diversity with in vitro cultures. We also reinforced how important it was organizing and making available this worldwide knowledge in an "inventory" of natural products and their sources. And finally, we focused on strategies based on synthetic biology and syntheses that allow reaching industrial scale supply. Approaches based on the opportunities lying in untapped natural plant chemical diversity are also considered.
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Affiliation(s)
- Emmanuelle Lautié
- Centro de Valorização de Compostos Bioativos da Amazônia (CVACBA)-Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, Brazil
| | - Olivier Russo
- Institut de Recherches Internationales SERVIER, Suresnes, France
| | - Pierre Ducrot
- Molecular Modelling Department, 'PEX Biotechnologie, Chimie & Biologie, Institut de Recherches SERVIER, Croissy-sur-Seine, France
| | - Jean A Boutin
- Institut de Recherches Internationales SERVIER, Suresnes, France
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11
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Lv S, Liu H, Kang J, Luo Y, Gong T, Dong Z, Sun G, He C, Sun X, Wang L. Palladium-catalyzed enol/enolate directed oxidative annulation: functionalized naphthofuroquinone synthesis and bioactivity evaluation. Chem Commun (Camb) 2020; 55:14729-14732. [PMID: 31690911 DOI: 10.1039/c9cc05233j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-promoted oxidative annulation reaction for the synthesis of structurally diverse naphthoquinone-containing heterocycles has been developed, providing switchable access to 1,2-naphthofuroquinones and densely functionalized cyclobutene-fused 1,4-naphthofuroquinones by selective enol/enolate-directed processes. The synthetic application was extended by late-stage functionalization of an anti-HIV drug. The practical value of 1,2-naphthofuroquinone synthesis was highlighted in endothelial protective lead compound development.
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Affiliation(s)
- Shuaipeng Lv
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100193, P. R. China.
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12
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Fürtges L, Obermaier S, Thiele W, Foegen S, Müller M. Diversity in Fungal Intermolecular Phenol Coupling of Polyketides: Regioselective Laccase‐Based Systems. Chembiochem 2019; 20:1928-1932. [DOI: 10.1002/cbic.201900041] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Leon Fürtges
- Institute of Pharmaceutical SciencesUniversity of Freiburg Albertstrasse 25 79104 Freiburg Germany
| | - Sebastian Obermaier
- Institute of Pharmaceutical SciencesUniversity of Freiburg Albertstrasse 25 79104 Freiburg Germany
| | - Wiebke Thiele
- Institute of Pharmaceutical SciencesUniversity of Freiburg Albertstrasse 25 79104 Freiburg Germany
| | - Silke Foegen
- Institute of Pharmaceutical SciencesUniversity of Freiburg Albertstrasse 25 79104 Freiburg Germany
| | - Michael Müller
- Institute of Pharmaceutical SciencesUniversity of Freiburg Albertstrasse 25 79104 Freiburg Germany
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13
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Luan Y, Cai Z, Li X, Ramella D, Miao Z, Wang W. An efficient Nozaki-Hiyama allenylation promoted by the acid derived MIL-101 MOF. RSC Adv 2019; 9:7479-7484. [PMID: 35519953 PMCID: PMC9061183 DOI: 10.1039/c8ra09600g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 02/09/2019] [Indexed: 11/21/2022] Open
Abstract
A concise synthesis of the sulfonic acid-containing MIL-101 MOF catalyst was reported using commercially available materials. A series of characterization of as-synthesized MIL-101-SO3H including SEM, XRD, FTIR, BET and TGA was also demonstrated. Using MIL-101-SO3H as a catalyst, an efficient Nozaki-Hiyama allenylation reaction was achieved to generate various polyfunctionalized α-allenic alcohols in high yield and good selectivity. Taking advantage of the high acidity of the MIL-101-SO3H MOF structure, such transformations were also achieved under mild reaction conditions and short reaction times. Based on our observed evidence during this study, a mechanism was proposed involving a substrate activation/γ-nucleophilic addition reaction sequence. In addition, the MIL-101-SO3H catalyst can be recycled ten times during the Nozaki-Hiyama allenylation reaction without compromising the yield and selectivity.
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Affiliation(s)
- Yi Luan
- School of Materials Science and Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District Beijing 100083 P. R. China
| | - Zonghui Cai
- School of Materials Science and Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District Beijing 100083 P. R. China
| | - Xiujuan Li
- School of Materials Science and Engineering, University of Science and Technology Beijing 30 Xueyuan Road, Haidian District Beijing 100083 P. R. China
| | - Daniele Ramella
- Department of Chemistry, Temple University-Beury Hall 1901, N. 13th Street Philadelphia PA 19122 USA
| | - Zongcheng Miao
- Key Laboratory of Organic Polymer Photoelectric Materials, School of Science, Xijing University Xi'an 710123 China
| | - Wenyu Wang
- Broad Institute 415 Main Street Cambridge Massachusetts 02142 USA
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14
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Shalit H, Dyadyuk A, Pappo D. Selective Oxidative Phenol Coupling by Iron Catalysis. J Org Chem 2019; 84:1677-1686. [DOI: 10.1021/acs.joc.8b03084] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hadas Shalit
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Alina Dyadyuk
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Doron Pappo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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15
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Liu L, Lei LS, Zhan ZS, Liu SZ, Wang YX, Tu YQ, Zhang FM, Zhang XM, Ma AJ, Wang SH. A catalytic asymmetric one-pot [3+2] cyclization/semipinacol rearrangement sequence: an efficient construction of a multi-substituted 3H-spiro[benzofuran-2,1′-cyclopentane] skeleton. Chem Commun (Camb) 2019; 55:3789-3792. [DOI: 10.1039/c9cc00811j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report an asymmetric construction of multi-substituted 3H-spiro[benzofuran-2,1’-cyclopentane]s with three new stereocenters and two new ring systems.
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Affiliation(s)
- Lin Liu
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Lin-Sheng Lei
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Zong-Song Zhan
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Si-Zhan Liu
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yu-Xiao Wang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Ai-Jun Ma
- School of Biotechnology and Health Science
- Wuyi University
- Jiangmen 529020
- P. R. China
| | - Shao-Hua Wang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
- School of Biotechnology and Health Science
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16
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Zhao J, Wang W, Tang H, Ramella D, Luan Y. Modification of Cu2+ into Zr-based metal–organic framework (MOF) with carboxylic units as an efficient heterogeneous catalyst for aerobic epoxidation of olefins. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.06.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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17
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Wu X, Iwata T, Scharf A, Qin T, Reichl KD, Porco JA. Asymmetric Synthesis of Gonytolide A: Strategic Use of an Aryl Halide Blocking Group for Oxidative Coupling. J Am Chem Soc 2018; 140:5969-5975. [PMID: 29658717 PMCID: PMC5943148 DOI: 10.1021/jacs.8b02535] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The first synthesis of the chromanone lactone dimer gonytolide A has been achieved employing vanadium(V)-mediated oxidative coupling of the monomer gonytolide C. An o-bromine blocking group strategy was employed to favor para- para coupling and to enable kinetic resolution of (±)-gonytolide C. Asymmetric conjugate reduction enabled practical kinetic resolution of a chiral, racemic precursor and the asymmetric synthesis of (+)-gonytolide A and its atropisomer.
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Affiliation(s)
| | | | - Adam Scharf
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - Tian Qin
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - Kyle D. Reichl
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - John A. Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
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18
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Forkosh H, Vershinin V, Reiss H, Pappo D. Stereoselective Synthesis of Optically Pure 2-Amino-2′-hydroxy-1,1′-binaphthyls. Org Lett 2018; 20:2459-2463. [DOI: 10.1021/acs.orglett.8b00800] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Hagit Forkosh
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Vlada Vershinin
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Hagai Reiss
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Doron Pappo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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19
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Du X, Li X, Tang H, Wang W, Ramella D, Luan Y. A facile 2H-chromene dimerization through an ortho-quinone methide intermediate catalyzed by a sulfonyl derived MIL-101 MOF. NEW J CHEM 2018. [DOI: 10.1039/c8nj01354c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient homo-dimerization of 2H-chromenes was achieved in high yield and diastereoselectivity using a MIL-101–SO3H MOF catalyst.
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Affiliation(s)
- Xin Du
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Xiujuan Li
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Houliang Tang
- Department of Chemistry
- Southern Methodist University
- Dallas
- USA
| | | | | | - Yi Luan
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
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