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Baars J, Grimm I, Blunk D, Neudörfl J, Schmalz H. Enantioselektive Totalsynthese und Strukturrevision von Dysiherbol A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Julian Baars
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Isabelle Grimm
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Dirk Blunk
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Jörg‐Martin Neudörfl
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
| | - Hans‐Günther Schmalz
- University of Cologne Department of Chemistry Greinstraße 4 50939 Köln Deutschland
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2
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Baars J, Grimm I, Blunk D, Neudörfl J, Schmalz H. Enantioselective Total Synthesis and Structural Revision of Dysiherbol A. Angew Chem Int Ed Engl 2021; 60:14915-14920. [PMID: 33978302 PMCID: PMC8251742 DOI: 10.1002/anie.202105733] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Indexed: 12/25/2022]
Abstract
A 12-step total synthesis of the natural product dysiherbol A, a strongly anti-inflammatory and anti-tumor avarane meroterpene isolated from the marine sponge Dysidea sp., was elaborated. As key steps, the synthesis features an enantioselective Cu-catalyzed 1,4-addition/enolate-trapping opening move, an Au-catalyzed double cyclization to build up the tetracyclic core-carbon skeleton, and a late installation of the C5-bridgehead methyl group via proton-induced cyclopropane opening associated with spontaneous cyclic ether formation. The obtained pentacyclic compound (corresponding to an anhydride of the originally suggested structure for dysiherbol A) showed identical spectroscopic data as the natural product, but an opposite molecular rotation. CD-spectroscopic measurements finally confirmed that both the constitution and the absolute configuration of the originally proposed structure of (+)-dysiherbol A need to be revised.
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Affiliation(s)
- Julian Baars
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
| | - Isabelle Grimm
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
| | - Dirk Blunk
- University of CologneDepartment of ChemistryGreinstrasse 450939CologneGermany
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3
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Harris RJ, Nakafuku K, Duncan AN, Carden RG, Timmerman JC, Widenhoefer RA. Kinetics and Mechanism of the Gold-Catalyzed Hydroamination of 1,1-Dimethylallene with N-Methylaniline. Chemistry 2021; 27:10377-10386. [PMID: 33951230 DOI: 10.1002/chem.202100741] [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: 02/28/2021] [Indexed: 12/17/2022]
Abstract
The mechanism of the intermolecular hydroamination of 3-methylbuta-1,2-diene (1) with N-methylaniline (2) catalyzed by (IPr)AuOTf has been studied by employing a combination of kinetic analysis, deuterium labelling studies, and in situ spectral analysis of catalytically active mixtures. The results of these and additional experiments are consistent with a mechanism for hydroamination involving reversible, endergonic displacement of N-methylaniline from [(IPr)Au(NHMePh)]+ (4) by allene to form the cationic gold π-C1,C2-allene complex [(IPr)Au(η2 -H2 C=C=CMe2 )]+ (I), which is in rapid, endergonic equilibrium with the regioisomeric π-C2,C3-allene complex [(IPr)Au(η2 -Me2 C=C=CH2 )]+ (I'). Rapid and reversible outer-sphere addition of 2 to the terminal allene carbon atom of I' to form gold vinyl complex (IPr)Au[C(=CH2 )CMe2 NMePh] (II) is superimposed on the slower addition of 2 to the terminal allene carbon atom of I to form gold vinyl complex (IPr)Au[C(=CMe2 )CH2 NMePh] (III). Selective protodeauration of III releases N-methyl-N-(3-methylbut-2-en-1-yl)aniline (3 a) with regeneration of 4. At high conversion, gold vinyl complex II is competitively trapped by an (IPr)Au+ fragment to form the cationic bis(gold) vinyl complex {[(IPr)Au]2 [C(=CH2 )CMe2 NMePh]}+ (6).
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Affiliation(s)
- Robert J Harris
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Kohki Nakafuku
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Alethea N Duncan
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Robert G Carden
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Jacob C Timmerman
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
| | - Ross A Widenhoefer
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708-0346, USA
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4
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Park Y, Lee JS, Ryu J. Gold(I)‐Catalyzed Intramolecular Dehydrative Amination of Sulfamate Esters Tethered to Allylic Alcohols: A Strategy for the Synthesis of Cyclic Sulfamidates. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yunjeong Park
- College of Pharmacy & Graduate School of Pharmaceutical Sciences Ewha Womans University 52 Ewhayeodae-gil, Seodaemun-gu Seoul 03760 Republic of Korea
| | - Ji Sun Lee
- College of Pharmacy & Graduate School of Pharmaceutical Sciences Ewha Womans University 52 Ewhayeodae-gil, Seodaemun-gu Seoul 03760 Republic of Korea
| | - Jae‐Sang Ryu
- College of Pharmacy & Graduate School of Pharmaceutical Sciences Ewha Womans University 52 Ewhayeodae-gil, Seodaemun-gu Seoul 03760 Republic of Korea
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5
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Manda JN, Butler BB, Aponick A. Synthesis and Biological Evaluation of the Southern Hemisphere of Spirastrellolide A and Analogues. J Org Chem 2020; 85:13694-13709. [PMID: 33111529 DOI: 10.1021/acs.joc.0c01867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis and biological evaluation of truncated spirastrellolide A analogues comprised of the southern hemisphere against protein phosphatase 2A are described. A convergent synthesis was designed featuring two gold-catalyzed cyclization reactions, specifically, a dehydrative cyclization of monoallylic diols for the synthesis of the tetrahydropyran (A-ring) and a regioselective spiroketalization for the efficient generation of the [6,6]-spiroketal (B, C-ring system). The synthesis of the southern hemisphere of spirastrellolide A was achieved involving the longest linear sequence of 19 steps. A total of eight spirastrellolide A analogues were synthesized, and preliminary PP2A enzyme assay inhibition studies were performed for the first time on analogues of the southern hemisphere. Several analogues showed inhibition, which is a positive indication and perhaps suggests that the unsaturated spiroketal fragment might be crucial to induce PP2A inhibition.
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Affiliation(s)
- Jagadeesh Nagendra Manda
- Florida Center for Heterocyclic Compounds and Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Barry B Butler
- Florida Center for Heterocyclic Compounds and Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds and Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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6
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Harris RJ, Carden RG, Duncan AN, Widenhoefer RA. Kinetics and Mechanism of the Gold-Catalyzed Intermolecular Hydroalkoxylation of Allenes with Alcohols. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02211] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robert J. Harris
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
| | - Robert G. Carden
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
| | - Alethea N. Duncan
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
| | - Ross A. Widenhoefer
- Department of Chemistry, French Family Science
Center, Duke University, Durham, North Carolina 27708, United States
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7
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Liu J, Miotto RJ, Segard J, Erb AM, Aponick A. Catalytic Dehydrative Lactonization of Allylic Alcohols. Org Lett 2018; 20:3034-3038. [PMID: 29737174 DOI: 10.1021/acs.orglett.8b01063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A convenient strategy for the synthesis of phthalides and γ-butyrolactones is reported. The method utilizes readily prepared allylic alcohols in formal Au(I)- and Pd(II)-catalyzed SN2' reactions. Using these catalysts, exclusive formation of the desired five-membered lactones is observed, completely avoiding the competing direct lactonization pathway that forms the undesired seven-membered ring with protic acids and alternative metal salts. This mild and operationally simple method notably tolerates exomethylene groups and should find use in both phthalide and terpene syntheses.
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Affiliation(s)
- Ji Liu
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Romain J Miotto
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Julien Segard
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Ashley M Erb
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds and Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
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8
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Akkarasamiyo S, Sawadjoon S, Orthaber A, Samec JSM. Tsuji-Trost Reaction of Non-Derivatized Allylic Alcohols. Chemistry 2018; 24:3488-3498. [DOI: 10.1002/chem.201705164] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Sunisa Akkarasamiyo
- Department of Organic Chemistry; Stockholm University; 106 91 Stockholm Sweden
| | - Supaporn Sawadjoon
- Department of Organic Chemistry; Stockholm University; 106 91 Stockholm Sweden
| | - Andreas Orthaber
- Department of Chemistry, Ångström Laboratories; Uppsala University, Box 523; 75120 Uppsala Sweden
| | - Joseph S. M. Samec
- Department of Organic Chemistry; Stockholm University; 106 91 Stockholm Sweden
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9
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Huang K, Wang H, Liu L, Chang W, Li J. Mutual Cooperation in the Formal Allyl Alcohol Nucleophilic Substitution and Hydration of Alkynes for the Construction of γ-Substituted Ketones. Chemistry 2016; 22:6458-65. [PMID: 26946315 DOI: 10.1002/chem.201600248] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 01/23/2023]
Abstract
Mutual cooperation in the formal allyl alcohol nucleophilic substitution reaction and hydration of an alkyne has been utilized in the presence of a gold catalyst to give a series of γ-functionalized ketones with high to excellent yields. This reaction actually involved an intramolecular O-H insertion cyclization of an alkyne to form the dihydrofuran intermediate, which was followed by the nucleophilic addition ring-opening of a dihydrofuran to give the target compound.
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Affiliation(s)
- Kaimeng Huang
- The College of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Wiejin Road 94#, Tianjin, 300071, P. R. China
| | - Hongkai Wang
- The College of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Wiejin Road 94#, Tianjin, 300071, P. R. China
| | - Lingyan Liu
- The College of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Wiejin Road 94#, Tianjin, 300071, P. R. China.
| | - Weixing Chang
- The College of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Wiejin Road 94#, Tianjin, 300071, P. R. China
| | - Jing Li
- The College of Chemistry, the State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Wiejin Road 94#, Tianjin, 300071, P. R. China. .,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, P. R. China.
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10
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Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum-University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Bandini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum-University of Bologna; Via Selmi 2 40126 Bologna Italy
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11
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Bosset C, Angibaud P, Stanfield I, Meerpoel L, Berthelot D, Guérinot A, Cossy J. Iron-Catalyzed Synthesis of C2 Aryl- and N-Heteroaryl-Substituted Tetrahydropyrans. J Org Chem 2015; 80:12509-25. [DOI: 10.1021/acs.joc.5b02371] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cyril Bosset
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Patrick Angibaud
- Janssen Research & Development, Oncology Medicinal Chemistry, Campus de Maigremont-BP615-27106, Val de Reuil Cedex, France
| | - Ian Stanfield
- Janssen Research & Development, Oncology Medicinal Chemistry, Campus de Maigremont-BP615-27106, Val de Reuil Cedex, France
| | - Lieven Meerpoel
- Janssen Research & Development, Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Didier Berthelot
- Janssen Research & Development, Oncology Medicinal Chemistry, Campus de Maigremont-BP615-27106, Val de Reuil Cedex, France
| | - Amandine Guérinot
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Janine Cossy
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France
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12
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Goodwin JA, Ballesteros CF, Aponick A. Diastereoselective Synthesis of Protected 1,3-Diols by Catalytic Diol Relocation. Org Lett 2015; 17:5574-7. [DOI: 10.1021/acs.orglett.5b02725] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Justin A. Goodwin
- Department of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - Carl F. Ballesteros
- Department of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Department of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
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13
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Barker G, Johnson DG, Young PC, Macgregor SA, Lee AL. Chirality Transfer in Gold(I)-Catalysed Direct Allylic Etherifications of Unactivated Alcohols: Experimental and Computational Study. Chemistry 2015; 21:13748-57. [PMID: 26248980 PMCID: PMC4586480 DOI: 10.1002/chem.201501607] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Indexed: 11/05/2022]
Abstract
Gold(I)-catalysed direct allylic etherifications have been successfully carried out with chirality transfer to yield enantioenriched, γ-substituted secondary allylic ethers. Our investigations include a full substrate-scope screen to ascertain substituent effects on the regioselectivity, stereoselectivity and efficiency of chirality transfer, as well as control experiments to elucidate the mechanistic subtleties of the chirality-transfer process. Crucially, addition of molecular sieves was found to be necessary to ensure efficient and general chirality transfer. Computational studies suggest that the efficiency of chirality transfer is linked to the aggregation of the alcohol nucleophile around the reactive π-bound Au-allylic ether complex. With a single alcohol nucleophile, a high degree of chirality transfer is predicted. However, if three alcohols are present, alternative proton transfer chain mechanisms that erode the efficiency of chirality transfer become competitive.
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Affiliation(s)
- Graeme Barker
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (UK)
| | - David G Johnson
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (UK)
| | - Paul C Young
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (UK)
| | - Stuart A Macgregor
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (UK).
| | - Ai-Lan Lee
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (UK).
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14
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Butler BB, Manda JN, Aponick A. Synthesis of the Spirastrellolide A, B/C Spiroketal: Enabling Solutions for Problematic Au(I)-Catalyzed Spiroketalizations. Org Lett 2015; 17:1902-5. [DOI: 10.1021/acs.orglett.5b00711] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Barry B. Butler
- Department of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - Jagadeesh Nagendra Manda
- Department of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Department of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
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15
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Cornil J, Gonnard L, Bensoussan C, Serra-Muns A, Gnamm C, Commandeur C, Commandeur M, Reymond S, Guérinot A, Cossy J. Iron- and indium-catalyzed reactions toward nitrogen- and oxygen-containing saturated heterocycles. Acc Chem Res 2015; 48:761-73. [PMID: 25674664 DOI: 10.1021/ar5004412] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A myriad of natural and/or biologically active products include nitrogen- and oxygen-containing saturated heterocycles, which are thus considered as attractive scaffolds in the drug discovery process. As a consequence, a wide range of reactions has been developed for the construction of these frameworks, much effort being specially devoted to the formation of substituted tetrahydropyrans and piperidines. Among the existing methods to form these heterocycles, the metal-catalyzed heterocyclization of amino- or hydroxy-allylic alcohol derivatives has emerged as a powerful and stereoselective strategy that is particularly interesting in terms of both atom-economy and ecocompatibility. For a long time, palladium catalysts have widely dominated this area either in Tsuji-Trost reactions [Pd(0)] or in an electrophilic activation process [Pd(II)]. More recently, gold-catalyzed formation of saturated N- and O-heterocycles has received growing attention because it generally exhibits high efficiency and diastereoselectivity. Despite their demonstrated utility, Pd- and Au-complexes suffer from high costs, toxicity, and limited natural abundance, which can be barriers to their widespread use in industrial processes. Thus, the replacement of precious metals with less expensive and more environmentally benign catalysts has become a challenging issue for organic chemists. In 2010, our group took advantage of the ability of the low-toxicity and inexpensive FeCl3 in activating allylic or benzylic alcohols to develop iron-catalyzed N- and O-heterocylizations. We first focused on N-heterocycles, and a variety of 2,6-disubstituted piperidines as well as pyrrolidines were synthesized in a highly diastereoselective fashion in favor of the cis-compounds. The reaction was further extended to the construction of substituted tetrahydropyrans. Besides triggering the formation of heterocycles, the iron salts were shown to induce a thermodynamic epimerization, which is the key to reach the high diastereoselectivities observed in favor of the most stable cis-isomers. It is worth noting that spiroketals could be prepared by using this method, which was successfully applied to a synthetic approach toward natural products belonging to the bistramide family. We then turned our attention to heterocycles incorporating two heteroatoms such as isoxazolidines. These frameworks can be found in biologically active natural products, and in addition, they can be transformed into 1,3-amino alcohols, which are of importance in organic chemistry. The use of FeCl3·6H2O allowed the access to a large variety of 3,5-disubstituted isoxazolidines from δ-hydroxylamino allylic alcohol derivatives with good yields and diastereoselectivities in favor of the cis-isomer. Recently, a Lewis acid-catalyzed synthesis of six- and five-membered ring carbonates starting from linear tert-butyl carbonates was reported. In some cases, the mild and chemoselective InCl3 was preferred over FeCl3·6H2O to avoid side-product formation. The resulting cyclic carbonates were easily transformed into 1,3- or 1,2-diols, and a total synthesis of (3S,5S)-alpinikatin was achieved.
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Affiliation(s)
- Johan Cornil
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Laurine Gonnard
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Charlélie Bensoussan
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Anna Serra-Muns
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Christian Gnamm
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Claude Commandeur
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Malgorzata Commandeur
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Sébastien Reymond
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Amandine Guérinot
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
| | - Janine Cossy
- Laboratoire
de Chimie Organique,
Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI
ParisTech, CNRS, PSL Research University, 10 Rue Vauquelin Paris 75231 Cedex 05, France
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16
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Webster S, Young PC, Barker G, Rosair GM, Lee AL. Dehydrative thiolation of allenols: indium vs gold catalysis. J Org Chem 2015; 80:1703-18. [PMID: 25522131 DOI: 10.1021/jo502648w] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Intermolecular additions of thiols to allenols via formal S(N)2' selectivity to produce functionalized dienes are described. Although this dehydrative reaction was initially developed using gold(I) catalysis, indium(III) proves to be a far superior catalyst in terms of selectivity and substrate scope.
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Affiliation(s)
- S Webster
- Institute of Chemical Sciences, Heriot-Watt University , Edinburgh EH14 4AS, United Kingdom
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17
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Paioti PHS, Ketcham JM, Aponick A. Controlling Regiochemistry in the Gold-Catalyzed Synthesis of Unsaturated Spiroketals. Org Lett 2014; 16:5320-3. [DOI: 10.1021/ol5024954] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paulo H. S. Paioti
- Department
of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - John M. Ketcham
- Department
of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Department
of Chemistry,
Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611, United States
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18
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Herkert L, Green SLJ, Barker G, Johnson DG, Young PC, Macgregor SA, Lee AL. Gold(I)-catalysed direct thioetherifications using allylic alcohols: an experimental and computational study. Chemistry 2014; 20:11540-8. [PMID: 25080400 PMCID: PMC4517163 DOI: 10.1002/chem.201403293] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Indexed: 01/11/2023]
Abstract
A gold(I)-catalysed direct thioetherification reaction between allylic alcohols and thiols is presented. The reaction is generally highly regioselective (S(N)2'). This dehydrative allylation procedure is very mild and atom economical, producing only water as the by-product and avoiding any unnecessary waste/steps associated with installing a leaving or activating group on the substrate. Computational studies are presented to gain insight into the mechanism of the reaction. Calculations indicate that the regioselectivity is under equilibrium control and is ultimately dictated by the thermodynamic stability of the products.
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Affiliation(s)
- Lorena Herkert
- Institute of Chemical Sciences, Heriot-Watt UniversityEdinburgh, EH14 4AS (UK) E-mail:
| | - Samantha L J Green
- Institute of Chemical Sciences, Heriot-Watt UniversityEdinburgh, EH14 4AS (UK) E-mail:
| | - Graeme Barker
- Institute of Chemical Sciences, Heriot-Watt UniversityEdinburgh, EH14 4AS (UK) E-mail:
| | - David G Johnson
- Institute of Chemical Sciences, Heriot-Watt UniversityEdinburgh, EH14 4AS (UK) E-mail:
| | - Paul C Young
- Institute of Chemical Sciences, Heriot-Watt UniversityEdinburgh, EH14 4AS (UK) E-mail:
| | - Stuart A Macgregor
- Institute of Chemical Sciences, Heriot-Watt UniversityEdinburgh, EH14 4AS (UK) E-mail:
| | - Ai-Lan Lee
- Institute of Chemical Sciences, Heriot-Watt UniversityEdinburgh, EH14 4AS (UK) E-mail:
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19
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Paioti PHS, Aponick A. Gold-Catalyzed Transformation of Unsaturated Alcohols. Top Curr Chem (Cham) 2014; 357:63-94. [DOI: 10.1007/128_2014_590] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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20
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Wright J, Young PC, Lucas N, Lee AL, Crowley JD. Gold(I) and Palladium(II) Complexes of 1,3,4-Trisubstituted 1,2,3-Triazol-5-ylidene "Click" Carbenes: Systematic Study of the Electronic and Steric Influence on Catalytic Activity. Organometallics 2013; 32:7065-7076. [PMID: 24353365 PMCID: PMC3862405 DOI: 10.1021/om400773n] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Indexed: 02/06/2023]
Abstract
The synthesis of a small family of six electronically and sterically modified 1,3,4-trisubstituted 1,2,3-triazol-5-ylidene gold(I) chloride complexes is described. Additionally, the corresponding trans-[PdBr2(iPr2-bimy)(1,3,4-trisubstituted 1,2,3-triazol-5-ylidene)] complexes are also generated and used to examine the donor strength of the 1,3,4-trisubstituted 1,2,3-triazol-5-ylidene ligands. All compounds have been characterized by 1H and 13C NMR and IR spectroscopy, high-resolution electrospray mass spectrometry (HR-ESI-MS), and elemental analysis. The molecular structures of four of the gold(I) and four of the palladium(II) complexes were determined using X-ray crystallography. Finally, it is demonstrated that these 1,2,3-triazol-5-ylidene gold(I) chloride complexes (Au(trz)Cl) are able to catalyze the cycloisomerization of 1,6-enynes, in high yield and regioselectivity, as well as the intermolecular direct etherification of allylic alcohols. Exploiting the Au(trz)Cl precatalysts allowed the etherification of allylic alcohols to be carried out under milder conditions, with better yield and regioselectivity than selected commercially available gold(I) catalysts.
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Affiliation(s)
- James
R. Wright
- Department of Chemistry, University of Otago,
P.O. Box 56, Dunedin, New Zealand
| | - Paul C. Young
- Institute of Chemical Sciences, School of Engineering
and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Nigel
T. Lucas
- Department of Chemistry, University of Otago,
P.O. Box 56, Dunedin, New Zealand
| | - Ai-Lan Lee
- Institute of Chemical Sciences, School of Engineering
and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - James D. Crowley
- Department of Chemistry, University of Otago,
P.O. Box 56, Dunedin, New Zealand
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21
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Coutant E, Young PC, Barker G, Lee AL. Gold(I)-catalysed one-pot synthesis of chromans using allylic alcohols and phenols. Beilstein J Org Chem 2013; 9:1797-806. [PMID: 24062845 PMCID: PMC3778418 DOI: 10.3762/bjoc.9.209] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 08/13/2013] [Indexed: 11/23/2022] Open
Abstract
A gold(I)-catalysed reaction of allylic alcohols and phenols produces chromans regioselectively via a one-pot Friedel-Crafts allylation/intramolecular hydroalkoxylation sequence. The reaction is mild, practical and tolerant of a wide variety of substituents on the phenol.
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Affiliation(s)
- Eloi Coutant
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 1LP, United Kingdom
| | - Paul C Young
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 1LP, United Kingdom
| | - Graeme Barker
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 1LP, United Kingdom
| | - Ai-Lan Lee
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 1LP, United Kingdom
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22
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Ketcham JM, Cardoso FSP, Biannic B, Piras H, Aponick A. Nitrogen Nucleophiles in Au-Catalyzed Dehydrative Cyclization Reactions. Isr J Chem 2013. [DOI: 10.1002/ijch.201300041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Abstract
Versatile and chemoselective preparation of substituted oxygenated heterocycles is described. Highly diastereoselective metal-catalyzed syntheses of trans-2,6- and cis-2,6-disubstituted tetrahydropyrans (THPs) are presented, along with an easy one-pot access to various ring size benzoannulated spiroketals.
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Mukherjee P, Widenhoefer RA. The regio- and stereospecific intermolecular dehydrative alkoxylation of allylic alcohols catalyzed by a gold(I) N-heterocyclic carbene complex. Chemistry 2013; 19:3437-44. [PMID: 23348826 PMCID: PMC3882269 DOI: 10.1002/chem.201203987] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Indexed: 11/10/2022]
Abstract
A 1:1 mixture of [AuCl(IPr)] (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidine) and AgClO(4) catalyzes the intermolecular dehydrative alkoxylation of primary and secondary allylic alcohols with aliphatic primary and secondary alcohols to form allylic ethers. These transformations are regio- and stereospecific with preferential addition of the alcohol nucleophile at the γ-position of the allylic alcohol syn to the departing hydroxyl group and with predominant formation of the E stereoisomer. The minor α regioisomer is formed predominantly through a secondary reaction manifold involving regioselective γ-alkoxylation of the initially formed allylic ether rather than by the direct α-alkoxylation of the allylic alcohol.
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Affiliation(s)
- Paramita Mukherjee
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708 (USA), Fax: (+1) (919)-660-1605
| | - Ross A. Widenhoefer
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708 (USA), Fax: (+1) (919)-660-1605
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25
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Young PC, Schopf NA, Lee AL. Gold(i)-catalysed direct allylic etherification of unactivated alcohols. Chem Commun (Camb) 2013; 49:4262-4. [DOI: 10.1039/c2cc36760b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Ketcham JM, Biannic B, Aponick A. The tandem intermolecular hydroalkoxylation/Claisen rearrangement. Chem Commun (Camb) 2012; 49:4157-9. [PMID: 23160013 DOI: 10.1039/c2cc37166a] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Au(I)-catalyzed intermolecular hydroalkoxylation of alkynes with allylic alcohols to provide allyl vinyl ethers that subsequently undergo Claisen rearrangement is reported. This new cascade reaction strategy facilitates the direct formation of γ,δ-unsaturated ketones from simple starting materials in a single step.
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Affiliation(s)
- John M Ketcham
- Department of Chemistry, University of Florida, P. O. Box 117200, Gainesville, FL 32611, USA
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27
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Borrero NV, Aponick A. Total Synthesis of Acortatarin A Using a Pd(II)-Catalyzed Spiroketalization Strategy. J Org Chem 2012; 77:8410-6. [DOI: 10.1021/jo301835e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Nicholas V. Borrero
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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28
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Jašíková L, Roithová J. Interaction of the Gold(I) Cation Au(PMe3)+ with Unsaturated Hydrocarbons. Organometallics 2012. [DOI: 10.1021/om2012387] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lucie Jašíková
- Department of Organic
Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Jana Roithová
- Department of Organic
Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
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