1
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Romero EO, Perkins JC, Burch JE, Delgadillo DA, Nelson HM, Narayan ARH. Chemoenzymatic Synthesis of (+)-Xyloketal B. Org Lett 2023; 25:1547-1552. [PMID: 36827601 DOI: 10.1021/acs.orglett.3c00334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
Xyloketal B is a pentacyclic fungal marine natural product that has shown potential for the treatment of diseases such as Alzheimer's disease and atherosclerosis. Herein, we describe the first asymmetric synthesis of this natural product, which relies on a chemoenzymatic strategy. This approach leverages a biocatalytic benzylic hydroxylation to access to an ortho-quinone methide intermediate which is captured in a [4 + 2] cycloaddition to stereoselectively yield a key cyclic ketal intermediate enroute to (+)-xyloketal B. The relative configuration of this intermediate was rapidly confirmed as the desired stereoisomer using MicroED. To complete the synthesis, a second ortho-quinone methide was accessed through a reductive approach, ultimately leading to the stereoselective synthesis of (+)-xyloketal B.
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Affiliation(s)
- Evan O Romero
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States.,Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jonathan C Perkins
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States.,Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica E Burch
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - David A Delgadillo
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Hosea M Nelson
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Alison R H Narayan
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States.,Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States.,Program in Chemical Biology, University of Michigan, Ann Arbor, Michigan 48109, United States
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2
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Zhang Y, Duan J, Zhou Y, Li X, Yao W, Wang Z. Rapid Construction of Tricyclic Furanobenzodihydropyrans by Asymmetric Tandem Reaction. J Org Chem 2023; 88:1815-1827. [PMID: 36644839 DOI: 10.1021/acs.joc.2c02228] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A process based on the organocatalyzed Mannich/cycloketalization/transesterification tandem reaction of 1-(2-hydroxyaryl)-1,3-diketones and β,γ-alkynyl α-imino esters has been developed, delivering a variety of tricyclic furanobenzodihydropyrans with excellent results (up to 99% yield, 99% ee, and >19:1 dr).
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Affiliation(s)
- Yulong Zhang
- Chongqing Key Laboratory of Green Synthesis and Application, College of Chemistry, Chongqing Normal University, Chongqing 401331, PR China
| | - Jingxiang Duan
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, PR China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Xiaoyi Li
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, PR China
| | - Weijun Yao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Zhen Wang
- School of Pharmaceutical Sciences and Chongqing Key Laboratory of Natural Drug Research, Chongqing University, Chongqing 401331, PR China
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3
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Mandal D, Kumar A, Patil NT. Gold catalysis in organic synthesis: fifteen years of research in India. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2022. [DOI: 10.1007/s43538-022-00106-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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4
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Kaur N, Kumar P, Dutt S, Banerjee P. Accessing Complex Tetrahydrofurobenzo-Pyran/Furan Scaffolds via Lewis-Acid Catalyzed Bicyclization of Cyclopropane Carbaldehydes with Quinone Methides/Esters. J Org Chem 2022; 87:7905-7918. [PMID: 35658458 DOI: 10.1021/acs.joc.2c00566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Herein, we report a straightforward one-pot synthesis of tetrahydrofurobenzopyran and tetrahydrofurobenzofuran systems via an in situ ring-expansion of the cyclopropane carbaldehydes followed by a [2 + n] cycloaddition with the quinone derivatives. The transformation not only unveils a new reaction mode of cyclopropane carbaldehydes with quinone methides/esters, but also promotes a step-efficient diastereoselective route to the sophisticatedly fused oxygen tricycles that can be further dehydrogenated to access the valued dihydro-2H-furo[2,3-b]chromene frameworks.
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Affiliation(s)
- Navpreet Kaur
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Shiv Dutt
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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5
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Total syntheses of hyperaspidinols A and B enabled by a bioinspired diastereoselective cascade sequence. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Nanda SK, Mallik R. Transition Metal-Catalyzed Hydroalkoxylation of Alkynes: An Overview. Chemistry 2021; 27:15571-15604. [PMID: 34343374 DOI: 10.1002/chem.202102194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Indexed: 01/12/2023]
Abstract
Oxygen-bearing motifs, mainly the congener heterocycles are ubiquitous due to their presence in various natural products and bioactive scaffolds. Although in literature, several strategies have been developed for their synthesis, hydroalkoxylation of alkynes has come forward as a method of choice and has been used extensively. In particular, hydroalkoxylation of alkynes has gained enormous attention from the synthetic community due to the rapid access to a very useful and reactive synthetic intermediate like 'enol ether'. Furthermore, to manifold the utility of these methods, reports have been developed elaborating the generation of 'enol ether' using hydroalkoxylation and their usage in various reactions in cascade or tandem manner. This review focuses on recent development on the hydroalkoxylation of alkynes for the synthesis of oxygen-containing entities.
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Affiliation(s)
- Santosh K Nanda
- Department of Chemistry, School of Applied Science, Centurion University of Technology and Management Paralakhemundi, Odisha, 761211, India
| | - Rosy Mallik
- Department of Chemistry, School of Applied Science, Centurion University of Technology and Management Paralakhemundi, Odisha, 761211, India
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7
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Praveen C. Cycloisomerization of π-Coupled Heteroatom Nucleophiles by Gold Catalysis: En Route to Regiochemically Defined Heterocycles. CHEM REC 2021; 21:1697-1737. [PMID: 34061426 DOI: 10.1002/tcr.202100105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/08/2021] [Accepted: 05/11/2021] [Indexed: 11/06/2022]
Abstract
Since the dawn of millennium, catalytic gold chemistry is at the forefront to set off diverse organic reactions via unique activation of π-bonded molecules. Within this purview, cycloisomerization of heteroatom nucleophiles linked to a π-system is one of the well recognized chemistry for the construction of numerous heterocyclic cores. Though the rudimentary aspects of this transformation are reviewed by several groups in different timeline, a holistic view on regiochemistry of such reactions went largely overlooked. Hence, this account emphasizes the gold catalyzed regioselective cycloisomerization of structurally distinctive π-connected hetero-nucleophiles leading to different heterocycles documented in the last two decades. From an application perspective, this account also highlights those methodologies which find a role in the total synthesis of natural products. Wherever appropriate, mechanistic details and contributing factors for selectivity are also discussed.
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Affiliation(s)
- Chandrasekar Praveen
- Electrochemical Power Sources Division, Central Electrochemical Research Institute (CSIR Laboratory), Alagappapuram, Karaikudi, 630003, Sivagangai District, Tamil Nadu, India
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8
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Chakrabarty S, Romero EO, Pyser JB, Yazarians JA, Narayan ARH. Chemoenzymatic Total Synthesis of Natural Products. Acc Chem Res 2021; 54:1374-1384. [PMID: 33600149 PMCID: PMC8210581 DOI: 10.1021/acs.accounts.0c00810] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The total synthesis of structurally complex natural products has challenged and inspired generations of chemists and remains an exciting area of active research. Despite their history as privileged bioactivity-rich scaffolds, the use of natural products in drug discovery has waned. This shift is driven by their relatively low abundance hindering isolation from natural sources and the challenges presented by their synthesis. Recent developments in biocatalysis have resulted in the application of enzymes for the construction of complex molecules. From the inception of the Narayan lab in 2015, we have focused on harnessing the exquisite selectivity of enzymes alongside contemporary small molecule-based approaches to enable concise chemoenzymatic routes to natural products.We have focused on enzymes from various families that perform selective oxidation reactions. For example, we have targeted xyloketal natural products through a strategy that relies on a chemo- and site-selective biocatalytic hydroxylation. Members of the xyloketal family are characterized by polycyclic ketal cores and demonstrate potent neurological activity. We envisioned assembling a representative xyloketal natural product (xyloketal D) involving a biocatalytically generated ortho-quinone methide intermediate. The non-heme iron (NHI) dependent monooxygenase ClaD was used to perform the benzylic hydroxylation of a resorcinol precursor, the product of which can undergo spontaneous loss of water to form an ortho-quinone methide under mild conditions. This intermediate was trapped using a chiral dienophile to complete the total synthesis of xyloketal D.A second class of biocatalytic oxidation that we have employed in synthesis is the hydroxylative dearomatization of resorcinol compounds using flavin-dependent monooxygenases (FDMOs). We anticipated that the catalyst-controlled site- and stereoselectivity of FDMOs would enable the total synthesis of azaphilone natural products. Azaphilones are bioactive compounds characterized by a pyranoquinone bicyclic core and a fully substituted chiral carbon atom. We leveraged the stereodivergent reactivity of FDMOs AzaH and AfoD to achieve the enantioselective synthesis of trichoflectin enantiomers, deflectin 1a, and lunatoic acid. We also leveraged FDMOs to construct tropolone and sorbicillinoid natural products. Tropolones are a structurally diverse class of bioactive molecules characterized by an aromatic cycloheptatriene core bearing an α-hydroxyketone moiety. We developed a two-step biocatalytic cascade to the tropolone natural product stipitatic aldehyde using the FDMO TropB and a NHI monooxygenase TropC. The FDMO SorbC obtained from the sorbicillin biosynthetic pathway was used in the concise total synthesis of a urea sorbicillinoid natural product.Our long-standing interest in using enzymes to carry out C-H hydroxylation reactions has also been channeled for the late-stage diversification of complex scaffolds. For example, we have used Rieske oxygenases to hydroxylate the tricyclic core common to paralytic shellfish toxins. The systemic toxicity of these compounds can be reduced by adding hydroxyl and sulfate groups, which improves their properties and potential as therapeutic agents. The enzymes SxtT, GxtA, SxtN, and SxtSUL were used to carry out selective C-H hydroxylation and O-sulfation in saxitoxin and related structures. We conclude this Account with a discussion of existing challenges in biocatalysis and ways we can currently address them.
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Affiliation(s)
- Suman Chakrabarty
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Evan O. Romero
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Joshua B. Pyser
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica A. Yazarians
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Alison R. H. Narayan
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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9
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Zhao C, Shah BH, Li H, Wu X, Zhang YJ. Palladium‐Catalyzed Allylic Cycloaddition of Vinylethylene Carbonates with 3‐Nitrochromone. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000714] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Can Zhao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai P. R. China
| | - Babar Hussain Shah
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai P. R. China
| | - Hongfang Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai P. R. China
- Department of Chemistry College of Science Yanbian University 977 Gongyuan Road, Yanji 133002 Jilin P. R. China
| | - Xue Wu
- Department of Chemistry College of Science Yanbian University 977 Gongyuan Road, Yanji 133002 Jilin P. R. China
| | - Yong Jian Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai P. R. China
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10
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Roy B, Rout N, Kuila P, Sarkar D. Synthesis and structural anomaly of
xyloketals‐unique
benzoxacycles: A review. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4152] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Barnali Roy
- Department of Chemistry NIT Rourkela Odisha India
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11
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Panda B, Gooyee AK. Bioactivity of Marine Natural Product Xyloketals. LETT ORG CHEM 2020. [DOI: 10.2174/1570178617999200909114431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:
Oceans can play a major role in supplying life-saving medicines in the world in future. Although considerable
progress has been made in finding new medicines from marine sources, large efforts are still necessary to examine such
molecules for clinical applications. Xyloketals are an important group of natural products with various powerful and prominent bioactivities such as inhibition of acetylcholine esterase, antioxidant activity, inhibition of L-calcium channels, radicalscavenging behavior, suppression of cell proliferation, reduction of neonatal hypoxic-ischemic brain injury, etc. This review
describes the isolation and structural characterization of all xyloketal natural products giving major emphasis on their bioactivity.
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Affiliation(s)
- Biswajit Panda
- Department of Chemistry, City College, 102/1 Raja Rammohan Sarani, Kolkata-700009, India
| | - Amal Kumar Gooyee
- Department of Chemistry, City College, 102/1 Raja Rammohan Sarani, Kolkata-700009, India
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12
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Lai Y, Nagaraju K, Gurubrahamam R, Chen K. Enantioselective Organocatalytic Synthesis of
δ
‐Lactone‐Fused 4‐Chromanones. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000667] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yu‐Ting Lai
- Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan R.O.C
| | - Koppanathi Nagaraju
- Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan R.O.C
| | - Ramani Gurubrahamam
- Department of Chemistry Indian Institute of Technology Jammu, Jagti, NH 44 Jammu (J&K) 181221 India
| | - Kwunmin Chen
- Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan R.O.C
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13
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Panda B. Joy and Challenges of Alkynylation of Arenes and Heteroarenes through Double C−H Functionalizations. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.201900733] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Biswajit Panda
- Department of ChemistryCity College 102/1 Raja Rammohan Sarani Kolkata 700009 India
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14
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Mao W, Lin S, Zhang L, Lu H, Jia J, Xu Z. Gold-catalyzed domino reactions of alkynol and p-quinone methides: divergent synthesis of fused- and spiro-ketals. Org Chem Front 2020. [DOI: 10.1039/d0qo00022a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A gold-catalyzed domino reaction of alkynyl alcohols and p-quinone methides to obtain divergent fused- and spiro-ketals has been developed.
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Affiliation(s)
- Wenxiu Mao
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Shiquan Lin
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Liang Zhang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Haifeng Lu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Jiong Jia
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Zhenghu Xu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- People's Republic of China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry
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15
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Doyon TJ, Perkins JC, Baker Dockrey SA, Romero EO, Skinner KC, Zimmerman PM, Narayan ARH. Chemoenzymatic o-Quinone Methide Formation. J Am Chem Soc 2019; 141:20269-20277. [PMID: 31840992 DOI: 10.1021/jacs.9b10474] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Generation of reactive intermediates and interception of these fleeting species under physiological conditions is a common strategy employed by Nature to build molecular complexity. However, selective formation of these species under mild conditions using classical synthetic techniques is an outstanding challenge. Here, we demonstrate the utility of biocatalysis in generating o-quinone methide intermediates with precise chemoselectivity under mild, aqueous conditions. Specifically, α-ketoglutarate-dependent non-heme iron enzymes, CitB and ClaD, are employed to selectively modify benzylic C-H bonds of o-cresol substrates. In this transformation, biocatalytic hydroxylation of a benzylic C-H bond affords a benzylic alcohol product which, under the aqueous reaction conditions, is in equilibrium with the corresponding o-quinone methide. o-Quinone methide interception by a nucleophile or a dienophile allows for one-pot conversion of benzylic C-H bonds into C-C, C-N, C-O, and C-S bonds in chemoenzymatic cascades on preparative scale. The chemoselectivity and mild nature of this platform is showcased here by the selective modification of peptides and chemoenzymatic synthesis of the chroman natural product (-)-xyloketal D.
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16
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Panda B. Total Synthesis of Xyloketals and Related Natural Product Alboatrin: Strategies and Tactics. ChemistrySelect 2019. [DOI: 10.1002/slct.201900779] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Biswajit Panda
- Department of ChemistryCity College, 102/1 Raja Rammohan Sarani Kolkata- 700009 India
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17
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Fernández-Pulido Y, López R, Menéndez MI. Gold(I)-catalyzed intermolecular dioxolane addition to alkynes: the role of water. Theor Chem Acc 2019. [DOI: 10.1007/s00214-019-2460-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Guo J, Miao H, Zhao Y, Bai X, Zhu Y, Wang Q, Bu Z. An unexpected multi-component one-pot cascade reaction to access furanobenzodihydropyran-fused polycyclic heterocycles. Chem Commun (Camb) 2019; 55:5207-5210. [DOI: 10.1039/c9cc02170a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unexpected multi-component one-pot cascade reaction of hydroxyketones with ortho-hydroxychalcones has been developed to afford an array of new furanobenzopyran-fused polycyclic compounds with complex molecular architectures.
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Affiliation(s)
- Jiaomei Guo
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Hongjie Miao
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Yang Zhao
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Xuguan Bai
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Yanshuo Zhu
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Qilin Wang
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Zhanwei Bu
- Institute of Functional Organic Molecular Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
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19
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Mrug GP, Bondarenko NV, Bondarenko SP, Frasinyuk MS. Reactivity of Condensed Isoflavone Derivatives for Hydrazine. Chem Nat Compd 2018. [DOI: 10.1007/s10600-018-2439-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Pflästerer D, Rudolph M, Hashmi ASK. Gold-Catalyzed Hydrofunctionalizations and Spiroketalizations of Alkynes as Key Steps in Total Synthesis. Isr J Chem 2018. [DOI: 10.1002/ijch.201700056] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Daniel Pflästerer
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - A. Stephen K. Hashmi
- Heidelberg University; Organisch-Chemisches Institut; Im Neuenheimer Feld 270 69120 Heidelberg Germany
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21
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Khan I, Zhao C, Zhang YJ. Pd-Catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones. Chem Commun (Camb) 2018; 54:4708-4711. [DOI: 10.1039/c8cc02456a] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An efficient method for the construction of furanobenzodihydropyran skeletons has been developed through Pd-catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones.
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Affiliation(s)
- Ijaz Khan
- School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory of Electrical Insulation and Thermal Aging
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Can Zhao
- School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory of Electrical Insulation and Thermal Aging
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Yong Jian Zhang
- School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory of Electrical Insulation and Thermal Aging
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
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22
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Mulokwe P, Marakalala MB, Mabasa TF, Kinfe HH. NaHSO4–SiO2-catalyzed aza-Diels–Alder reaction of o-hydroxybenzaldimines with 2,3-dihydrofuran: Diastereoselective synthesis of furanobenzopyrans. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1377257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Pfanelo Mulokwe
- Department of Chemistry, Research Centre for Synthesis and Catalysis, University of Johannesburg, Johannesburg, South Africa
| | - Mokgethwa B. Marakalala
- Department of Chemistry, Research Centre for Synthesis and Catalysis, University of Johannesburg, Johannesburg, South Africa
| | - Tommy F. Mabasa
- Department of Chemistry, Research Centre for Synthesis and Catalysis, University of Johannesburg, Johannesburg, South Africa
| | - Henok H. Kinfe
- Department of Chemistry, Research Centre for Synthesis and Catalysis, University of Johannesburg, Johannesburg, South Africa
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Recent applications of gold-catalyzed cascade reactions in total synthesis of natural product. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.10.029] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Metal-free Hydroalkoxylation-Formal [4+2] Cycloaddition Cascade for the Synthesis of Ketals. Chemistry 2017; 23:10007-10012. [DOI: 10.1002/chem.201701659] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Indexed: 11/07/2022]
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Yang J, Qiu G, Jiang J, Hu Y, Chen S, Zhang S, Zhang Y. Asymmetric Organocatalytic Synthesis of Benzopyran- and Benzofuran-Fused Polycyclic Acetals. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601335] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiyang Yang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Gang Qiu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
- Haiyan People's Hospital; 901 South Yanhu Road, Wuyuan Street Haiyan, Zhejiang 314300 People's Republic of China
| | - Jing Jiang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Yanwei Hu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Shaohua Chen
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Shilei Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
| | - Yinan Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases & Department of Medicinal Chemistry, College of Pharmaceutical Sciences; Soochow University; Suzhou 215123 People's Republic of China
- College of Pharmacy; University of Kentucky; 789 South Limestone Street Lexington, Kentucky 40536 USA
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Quach R, Furkert DP, Brimble MA. Gold catalysis: synthesis of spiro, bridged, and fused ketal natural products. Org Biomol Chem 2017; 15:3098-3104. [DOI: 10.1039/c7ob00496f] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This review summarises the application of gold catalysis for the syntheses of spiro, bridged and fused ketal natural products.
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Affiliation(s)
- Rachelle Quach
- The School of Chemical Sciences
- University of Auckland
- Auckland 1010
- New Zealand
| | - Daniel P. Furkert
- The School of Chemical Sciences
- University of Auckland
- Auckland 1010
- New Zealand
| | - Margaret A. Brimble
- The School of Chemical Sciences
- University of Auckland
- Auckland 1010
- New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery
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Pflästerer D, Hashmi ASK. Gold catalysis in total synthesis – recent achievements. Chem Soc Rev 2016; 45:1331-67. [DOI: 10.1039/c5cs00721f] [Citation(s) in RCA: 600] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The most recent achievements of gold catalysed transformations applied in total synthesis of natural products are reviewed and analysed.
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Affiliation(s)
- Daniel Pflästerer
- Organisch-Chemisches Institut
- Universität Heidelberg
- 69120 Heidelberg
- Germany
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28
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Sang XN, Chen SF, Chen G, An X, Li SG, Li XN, Lin B, Bai J, Wang HF, Pei YH. Phomeketales A–F, six unique metabolites from the endophytic fungus Phoma sp. YN02-P-3. RSC Adv 2016. [DOI: 10.1039/c6ra12509c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Phomeketales A–F (1–6), six new xyloketals, with unprecendented carbon substitution at C-16 and C-17 simultaneously, were isolated from the endophytic fungus Phoma sp. YN02-P-3.
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Zalesskiy SS, Khrustalev VN, Kostukovich AY, Ananikov VP. Carboxylic Group-Assisted Proton Transfer in Gold-Mediated Thiolation of Alkynes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00210] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Sergey S. Zalesskiy
- N.D.
Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect, 47, Moscow, 119991, Russia
| | - Victor N. Khrustalev
- A.N.
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow, 119991, Russia
| | - Alexandr Yu. Kostukovich
- A.N.
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow, 119991, Russia
| | - Valentine P. Ananikov
- N.D.
Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect, 47, Moscow, 119991, Russia
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Veenboer RP, Dupuy S, Nolan SP. Stereoselective Gold(I)-Catalyzed Intermolecular Hydroalkoxlation of Alkynes. ACS Catal 2015; 5:1330-1334. [PMID: 29291136 PMCID: PMC5745073 DOI: 10.1021/cs501976s] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/20/2015] [Indexed: 01/16/2023]
Abstract
We report the use of cationic gold complexes [Au(NHC)(CH3CN)][BF4] and [{Au(NHC)}2(μ-OH)][BF4] (NHC = N-heterocyclic carbene) as highly active catalysts in the solvent-free hydroalkoxylation of internal alkynes using primary and secondary alcohols. Using this simple protocol, a broad range of (Z)-vinyl ethers were obtained in excellent yields and high stereoselectivities. The methodology allows for the use of catalyst loadings as low as 200 ppm for the addition of primary alcohols to internal alkynes (TON = 35 000, TOF = 2188 h-1).
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Affiliation(s)
| | | | - Steven P. Nolan
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, U.K.
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32
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Majumdar KC, Sinha B. Coinage metals (Cu, Ag and Au) in the synthesis of natural products. RSC Adv 2014. [DOI: 10.1039/c3ra44336a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Sanz-Marco A, García-Ortiz A, Blay G, Fernández I, Pedro JR. Highly Enantioselective Copper(I)-Catalyzed Conjugate Addition of Terminal Alkynes to 1,1-Difluoro-1-(phenylsulfonyl)-3-en-2-ones: New Ester/Amide Surrogates in Asymmetric Catalysis. Chemistry 2013; 20:668-72. [DOI: 10.1002/chem.201303920] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Indexed: 11/11/2022]
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