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Heinrich CF, Durand D, Starck J, Michelet V. Ruthenium Metathesis: A Key Step To Access a New Cyclic Tetrasubstituted Olefin Platform. Org Lett 2020; 22:7064-7067. [PMID: 32806204 DOI: 10.1021/acs.orglett.0c01344] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An rapid and mild synthetic route for the preparation of cyclic tetrasubstituted platforms via ruthenium-catalyzed ring-closing metathesis (RCM) has been developed. This process tolerates a wide range of functionalities such as nitrogen, oxygen, sulfur, silicon, and carbon tethered groups, as well as very challenging fluorine and boron atoms (36 derivatives, up to 96%). This diversity-oriented method was further demonstrated by the postfunctionalization reactions, such as Pd-couplings, N-substitution, and reductive amination introducing a morpholine moiety.
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Affiliation(s)
- Clément F Heinrich
- PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, 11 rue P. et M. Curie, 75005 Paris, France
| | - Didier Durand
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - Jérôme Starck
- Institut de Recherches Servier, 125 Chemin de Ronde, 78290 Croissy-Seine, France
| | - Véronique Michelet
- PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, 11 rue P. et M. Curie, 75005 Paris, France.,University Côte d'Azur, Institut de Chimie de Nice, Parc Valrose, Faculté des Sciences, 06100 Nice, France
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Petko D, Stratton M, Koh S, Tam W. Cationic Ruthenium-Catalyzed Bis-Homo-Diels-Alder Cycloaddition. Curr Org Synth 2020; 16:787-792. [PMID: 31984894 DOI: 10.2174/1570179416666190401204448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/11/2019] [Accepted: 02/22/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The ruthenium-catalyzed Bis-Homo-Diels-Alder cycloaddition between 1,5- cyclooctadiene and alkynes was explored, and the use of commercially available cationic catalysts was investigated. It was noted that [CpRu(CH3CN)3]PF6 was effective at catalyzing this cycloaddition and yields of the desired tricyclo[4.2.2.02,5]dec-7-ene adduct ranging from 13 to 83% were achieved using this cationic catalyst. Several cycloadducts that were previously unobtainable with the use of the neutral (Cp*RuCl(COD) catalysts were also successfully made using [CpRu(CH3CN)3]PF6 albeit in low yields. METHODS Commercially available, and previously synthesized alkynes were combined with 1,5-cyclooctadiene and treated with a ruthenium catalyst within a glovebox. The reaction mixture was stirred for 72h at temperatures ranging from 25 to 70oC. The desired cycloadduct was then isolated using flash column chromatography and analyzed and characterized using NMR, IR and MS. RESULTS Several previously unattainable adducts were synthesized using the cationic [CpRu(CH3CN)3]PF6. When this catalyst was compared to the neutral Cp*RuCl(COD) greater yields were observed. CONCLUSION The present study describes an improved method for the formation of the tricyclo[4.2.2.02,5]dec-7- ene framework using a commercially available cationic ruthenium catalyst. It was noted that the use of [CpRu(CH3CN)3]PF6 led to improved yields when compared to Cp*RuCl(COD).
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Affiliation(s)
- Dina Petko
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Matthew Stratton
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - Samuel Koh
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - William Tam
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
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Perla R, Atla R, Jangili P, Anjibabu R. Stereoselective total synthesis of cryptomoscatone D1 and (5 R ,7 S )-kurzilactone via ring closing metathesis. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.01.091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Liu Y, Roose J, Lam JWY, Tang BZ. Multicomponent Polycoupling of Internal Diynes, Aryl Diiodides, and Boronic Acids to Functional Poly(tetraarylethene)s. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01946] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yajing Liu
- HKUST-Shenzhen Research Institute, No.
9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
- Department
of Chemistry, Hong Kong Branch of National Engineering Research Center
for Tissue Restoration Reconstruction, Division of Life Science, State
Key Laboratory of Molecular Neuroscience, Institute for Advanced Study,
Institute of Molecular Functional Materials, and Division of Biomedical
Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jesse Roose
- Department
of Chemistry, Hong Kong Branch of National Engineering Research Center
for Tissue Restoration Reconstruction, Division of Life Science, State
Key Laboratory of Molecular Neuroscience, Institute for Advanced Study,
Institute of Molecular Functional Materials, and Division of Biomedical
Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W. Y. Lam
- HKUST-Shenzhen Research Institute, No.
9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
- Department
of Chemistry, Hong Kong Branch of National Engineering Research Center
for Tissue Restoration Reconstruction, Division of Life Science, State
Key Laboratory of Molecular Neuroscience, Institute for Advanced Study,
Institute of Molecular Functional Materials, and Division of Biomedical
Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- HKUST-Shenzhen Research Institute, No.
9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen 518057, China
- Department
of Chemistry, Hong Kong Branch of National Engineering Research Center
for Tissue Restoration Reconstruction, Division of Life Science, State
Key Laboratory of Molecular Neuroscience, Institute for Advanced Study,
Institute of Molecular Functional Materials, and Division of Biomedical
Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Guangdong
Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State
Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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Kuznetsov NY, Khrustalev VN, Strelkova TV, Bubnov YN. Synthesis of 11-methyl-13-azabicyclo[7.3.1]trideca-3,10-diene, a macrobicycle with the 9b-azaphenalene carbon framework, based on the combination of allylboration and intramolecular metathesis. Russ Chem Bull 2014. [DOI: 10.1007/s11172-014-0768-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zhu L, Lin NT, Xie ZY, Lee SL, Huang SL, Yang JH, Lee YD, Chen CH, Chen CH, Luh TY. Ruthenium-Catalyzed Cascade Metathetical Cyclopolymerization of Bisnorbornenes with Flexible Linkers. Macromolecules 2013. [DOI: 10.1021/ma302293q] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lei Zhu
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
- Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, Lingling Lu, Shanghai, China 200032
| | - Nai-Ti Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
| | - Zhen-Yu Xie
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
- Genomic Research Center, Academia Sinica, Nangang, Taipei, Taiwan 115
| | - Shern-Long Lee
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
| | - Shou-Ling Huang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
| | - Jian-He, Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 300
| | - Yu-Der, Lee
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 300
| | - Chun-hsien Chen
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
| | - Chung-Hsuan Chen
- Genomic Research Center, Academia Sinica, Nangang, Taipei, Taiwan 115
| | - Tien-Yau Luh
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 106
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Nishihara Y, Doi Y, Izawa S, Li HY, Inoue Y, Kojima M, Chen JT, Takagi K. Enantioseparation of doubly functionalized polar norbornenes by HPLC and their ruthenium-catalyzed ring-opening metathesis polymerization. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23781] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Constable EC, Housecroft CE, Neuburger M, Rösel PJ, Schaffner S. Diversification of ligand families through ferroin–neocuproin metal-binding domain manipulation. Dalton Trans 2009:4918-27. [DOI: 10.1039/b905988a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Desymmetrization of 7-azabicycloalkenes by tandem olefin metathesis for the preparation of natural product scaffolds. Beilstein J Org Chem 2007; 3:48. [PMID: 18088413 PMCID: PMC2200670 DOI: 10.1186/1860-5397-3-48] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2007] [Accepted: 12/18/2007] [Indexed: 11/18/2022] Open
Abstract
Background Tandem olefin metathesis sequences are known to be versatile for the generation of natural product scaffolds and have also been used for ring opening of strained carbo- and heterocycles. In this paper we demonstrate the potential of these reactions for the desymmetrization of 7-azabicycloalkenes. Results We have established efficient protocols for the desymmetrization of different 7-azabicycloalkenes by intra- and intermolecular tandem metathesis sequences with ruthenium based catalysts. Conclusion Desymmetrization of 7-azabicycloalkenes by olefin metathesis is an efficient process for the preparation of common natural product scaffolds such as pyrrolidines, indolizidines and isoindoles.
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Colacino E, Martinez J, Lamaty F. Preparation of NHC–ruthenium complexes and their catalytic activity in metathesis reaction. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.07.017] [Citation(s) in RCA: 186] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Brass S, Chan NS, Gerlach C, Luksch T, Böttcher J, Diederich WE. Synthesis of 2,3,4,7-tetrahydro-1H-azepines as privileged ligand scaffolds for the design of aspartic protease inhibitors via a ring-closing metathesis approach. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.09.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Büchert M, Meinke S, Prenzel AHGP, Deppermann N, Maison W. Azabicycloalkenes as Synthetic Intermediates − Synthesis of Azabicyclo[X.3.0]alkane Scaffolds. Org Lett 2006; 8:5553-6. [PMID: 17107070 DOI: 10.1021/ol062219+] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general method to synthesize functionalized azabicyclo[X.3.0]alkane scaffolds 5 is reported. Key intermediates are azabicycloalkenes such as 1 and 2, which are acylated with unsaturated carboxylic acids and subsequently submitted to tandem olefin metathesis. The resulting bicyclic heterocycles are versatile intermediates for different dipeptide mimetics and can be used as intermediates for natural products with indolizidine scaffolds or analogues thereof. [reaction: see text].
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Affiliation(s)
- Marina Büchert
- Justus-Liebig Universität Giessen, Institut für Organische Chemie, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
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Majumdar KC, Islam R, Rahaman H, Roy B. Synthesis of spiro-pyridopyridine analogues by Grubbs' catalyst mediated alkene and enyne metathesis reaction. Org Biomol Chem 2006; 4:2393-8. [PMID: 16763684 DOI: 10.1039/b603125k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical synthesis of spiro-naphthyridinone derivatives is described by the combination of the Claisen rearrangement and ring-closing metathesis/ring-closing enyne metathesis process. The RCM or RCEM proceeded smoothly in the presence of Grubbs' first generation catalyst at room temperature under a nitrogen atmosphere.
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Affiliation(s)
- K C Majumdar
- Department of Chemistry, University of Kalyani, West Bengal, India.
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15
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Bruneau C, Dixneuf PH. Metal Vinylidenes and Allenylidenes in Catalysis: Applications in Anti-Markovnikov Additions to Terminal Alkynes and Alkene Metathesis. Angew Chem Int Ed Engl 2006; 45:2176-203. [PMID: 16521143 DOI: 10.1002/anie.200501391] [Citation(s) in RCA: 421] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The involvement of a catalytic metal vinylidene species was proposed for the first time in 1986 to explain the regioselective formation of vinyl carbamates directly from terminal alkynes, carbon dioxide, and amines. Since this initial report, various metal vinylidenes and allenylidenes, which are key activation intermediates, have proved extremely useful for many alkyne transformations. They have contributed to the rational design of new catalytic reactions. This 20th anniversary is a suitable occasion to present the advancement of organometallic vinylidenes and allenylidenes in catalysis.
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Affiliation(s)
- Christian Bruneau
- Institut de Chimie, UMR 6509, CNRS-Université de Rennes 1, Organométalliques et Catalyse: Chimie et Electrochimie Moléculaires, Campus de Beaulieu, 35042 Rennes Cedex, France.
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16
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Brass S, Gerber HD, Dörr S, Diederich WE. Facile synthesis of substituted 2,3,4,7-tetrahydro-1H-azepines via ring-closing metathesis. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.11.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Bai CX, Lu XB, He R, Zhang WZ, Feng XJ. Lewis-acid assisted cross metathesis of acrylonitrile with functionalized olefins catalyzed by phosphine-free ruthenium carbene complex. Org Biomol Chem 2005; 3:4139-42. [PMID: 16267595 DOI: 10.1039/b510776h] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The exchange of the PPh3 ligand in the complex [1,3-bis(2,6-dimethylphenyl)4,5-dihydroimidazol-2-ylidene](PPh3)(Cl)2Ru=CHPh (7) for a pyridine ligand at ambient temperature leads to the formation of the stable phosphine-free carbene ruthenium complex [1,3-bis(2,6-dimethylphenyl)4,5-dihydroimidazol-2-ylidene](C5H5N)2(Cl)2 Ru=CHPh (8). The resulted ruthenium complex exhibits highly catalytic activity for the cross metathesis of acrylonitrile with various functionalized olefins under mild conditions, and its activity can be further improved by the addition of a Lewis acid such as Ti(OiPr)4. In the mixture products, the Z-isomer predominates.
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Affiliation(s)
- Chen-Xi Bai
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 158 Zhongshan Road, Dalian, 116012, PR China
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Bai CX, Zhang WZ, He R, Lu XB, Zhang ZQ. Highly active phosphine-free carbene ruthenium catalyst for cross-metathesis of acrylonitrile with functionalized olefins. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.08.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Maechling S, Zaja M, Blechert S. Unexpected Results of a Turnover Number (TON) Study Utilising Ruthenium-Based Olefin Metathesis Catalysts. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200505053] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Weigl K, Köhler K, Dechert S, Meyer F. Synthesis and Structure of N-Heterocyclic Carbene Complexes with Tethered Olefinic Groups: Application of the Ruthenium Catalyst in Olefin Metathesis. Organometallics 2005. [DOI: 10.1021/om0503242] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kerstin Weigl
- Merck KGaA, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Katrin Köhler
- Merck KGaA, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Sebastian Dechert
- Merck KGaA, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Franc Meyer
- Merck KGaA, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Enders D, Lenzen A, Raabe G. Asymmetric Synthesis of the 1-epi Aglycon of the Cripowellins A and B. Angew Chem Int Ed Engl 2005; 44:3766-9. [PMID: 15892131 DOI: 10.1002/anie.200500556] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dieter Enders
- Institut für Organische Chemie, RWTH Aachen, Landoltweg 1, 52074 Aachen, Germany.
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Enders D, Lenzen A, Raabe G. Asymmetrische Synthese des Grundgerüsts der Cripowelline A und B - das 1-epi-Aglycon. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500556] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Piscopio AD, Robinson JE. Recent applications of olefin metathesis to combinatorial chemistry. Curr Opin Chem Biol 2005; 8:245-54. [PMID: 15183322 DOI: 10.1016/j.cbpa.2004.04.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Olefin metathesis has emerged as a versatile technology for the synthesis of combinatorial libraries with regard to both scaffold creation and embellishment. The incessant pursuit of 'next-generation' catalysts continues to raise the bar in terms of efficiency, functional group tolerability, diminished reaction times and temperatures and has helped foster both diversity-oriented and target-directed efforts. This report summarizes recent contributions in the area of olefin cross-metathesis and ring-closing metathesis as applied to combinatorial and parallel synthesis. These examples include generation of dimeric benzo[b]furans as novel probes for protein-protein interaction, a cross-metathesis approach to 'traceless linkers' for azide-containing sugars, stereo-diversified synthesis of 1,4- and 1,5-enediols, a novel mannitol derived combinatorial scaffold, parallel synthesis strategies for aza-sugars, as well as the synthesis of dehydro-Freidinger lactams.
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Affiliation(s)
- Anthony D Piscopio
- Array BioPharma Inc., Process Chemistry Division, 3200 Walnut Street, Boulder, Colorado 80301, USA.
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Abstract
[reaction: see text] An esterification/ring-closing metathesis approach to dictyostatin and discodermolide is introduced. The approach provides for facile fragment coupling of two main segments of these natural products at the C10-C11 alkene with high to complete Z-selectivity.
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Affiliation(s)
- Cyrous O Kangani
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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Dewi P, Randl S, Blechert S. Cross-metathesis of 1,3-dienes with electron-deficient olefins. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2004.11.154] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Plietker B. The RuO4-Catalyzed Ketohydroxylation. Part 1. Development, Scope, and Limitation. J Org Chem 2004; 69:8287-96. [PMID: 15549799 DOI: 10.1021/jo048822s] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new straightforward oxidation of C,C-double bonds to unsymmetrical alpha-hydroxy ketones using catalytic amounts of RuCl(3) and stoichiometric amounts of Oxone under buffered conditions has been developed, a reaction for which we coined the expression "ketohydroxylation". The transformation allows the direct formation of alpha-hydroxy ketones (acyloins) from olefins without intermediate formation of syn-diols. The present paper will provide detailed information starting with the underlying concept and the subsequent development of the reaction. The effect of base, solvent stoichiometry, and temperature will be discussed resulting in an improved mechanistic model that might help to explain the influence of different reaction parameters on reactivity and selectivity in RuO(4)-catalyzed oxidations of C,C-double bonds. Furthermore, an improved workup procedure allows the recovery of the ruthenium catalyst by precipitation while simplifying the overall product purification. The second part of the paper focuses on exploration of scope and limitation. A variety of substituted olefins are oxidized to alpha-hydroxy ketones in good to excellent regioselectivities and yield. Cyclic substrates proved to be problematic to oxidize; however, a careful analysis of temperature effects resulted in the development of a successful protocol for the ketohydroxylation of cyclic substrates by simply decreasing the reaction temperature.
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Affiliation(s)
- Bernd Plietker
- Organic Chemistry II, Chemistry Faculty, Dortmund University, Otto-Hahn-Str. 6, D-44221 Dortmund, Germany.
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Abstract
A new mild method for the oxidation of a variety of olefins to alpha-hydroxy ketones is described. Using the concept of a nucleophilic reoxidant, different olefins were ketohydroxylated with high regioselectivity in good to excellent yields.
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Affiliation(s)
- Bernd Plietker
- Organic Chemistry II, Chemistry Faculty, Dortmund University, Otto-Hahn-Str. 6, D-44221 Dortmund, Germany.
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Arjona O, Csákÿ A, Plumet J. Sequential Metathesis in Oxa‐ and Azanorbornene Derivatives. European J Org Chem 2003. [DOI: 10.1002/ejoc.200390100] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Odón Arjona
- Universidad Complutense, Facultad de Química, Departamento de Química Orgánica 28040. Madrid, Spain, Fax (internat.) +34‐91/394‐4100
| | - Aurelio G. Csákÿ
- Universidad Complutense, Facultad de Química, Departamento de Química Orgánica 28040. Madrid, Spain, Fax (internat.) +34‐91/394‐4100
| | - Joaquín Plumet
- Universidad Complutense, Facultad de Química, Departamento de Química Orgánica 28040. Madrid, Spain, Fax (internat.) +34‐91/394‐4100
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Stüer W, Wolf J, Werner H. A tertiary phosphine that is too bulky: preparation of catalytically less active carbene and vinylidene ruthenium(II) complexes. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(01)01300-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fürstner A, Thiel OR, Lehmann CW. Study Concerning the Effects of Chelation on the Structure and Catalytic Activity of Ruthenium Carbene Complexes. Organometallics 2001. [DOI: 10.1021/om0108503] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Oliver R. Thiel
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
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36
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Abstract
A concise total synthesis of the potent cytotoxic marine natural products salicylihalamide A and B (la, b) is reported. Key steps of our approach were the asymmetric hydrogenation reactions of beta-keto esters 18 and 32 catalyzed by [((S)-BINAP)Ru-Cl2]2. NEt3 and the cyclization of the macrolide core by ring closing olefin metathesis (RCM) using the "second-generation" ruthenium carbene complex 24 as the catalyst which bears an imidazol-2-ylidene ligand. The EIZ ratio obtained in this macrocyclization reaction was determined by the protecting groups at the remote phenolic OH group of the cyclization precursor. The elaboration of the resulting cycloalkene 37 into the final target involved a CrCl2-mediated synthesis of vinyliodide 49 which, after deprotection, did undergo a copper-catalyzed cross-coupling process with the (Z,Z)-configurated carboxamide 42 to form the labile enamide moiety of 1. Compound 42 was derived from a palladium-catalyzed Negishi coupling between butynylzinc chloride and 3-iodoacrylate 39 followed by a Lindlar reduction of enyne 40 thus obtained and a final aminolysis of the ester group.
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Affiliation(s)
- A Fürstner
- Max-Planck-Institut für Kohlenforschung Mülheim an der Ruhr, Germany.
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37
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Fürstner A, Guth O, Düffels A, Seidel G, Liebl M, Gabor B, Mynott R. Indenylidene complexes of ruthenium: optimized synthesis, structure elucidation, and performance as catalysts for olefin metathesis--application to the synthesis of the ADE-ring system of nakadomarin A. Chemistry 2001; 7:4811-20. [PMID: 11763450 DOI: 10.1002/1521-3765(20011119)7:22<4811::aid-chem4811>3.0.co;2-p] [Citation(s) in RCA: 225] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An optimized and large scale adaptable synthesis of the ruthenium phenylindenylidene complex 3 is described which employs commercially available diphenyl propargyl alcohol 5 as a stable and convenient carbene source. Previous ambiguities as to the actual structure of the complex have been ruled out by a full analysis of its NMR spectra. A series of applications to ring closing metathesis (RCM) reactions shows that complex 3 is as good as or even superior to the classical Grubbs carbene 1 in terms of yield, reaction rate, and tolerance towards polar functional groups. Complex 3 turns out to be the catalyst of choice for the synthesis of the enantiopure core segment 77 of the marine alkaloid nakadomarin A 60 comprising the ADE rings of this target. Together with a series of other examples, this particular application illustrates that catalyst 3 is particularly well suited for the cyclization of medium-sized rings by RCM. Other key steps en route to nakadomarin A are a highly selective intramolecular Michael addition setting the quaternary center at the juncture of the A and D rings and a Takai-Nozaki olefination of aldehyde 73 with CH2I2, Ti(OiPr)4 and activated zinc dust.
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Affiliation(s)
- A Fürstner
- Max-Planck-Institut für Kohlenforschung, Mülheim/Ruhr, Germany.
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38
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Hultzsch KC, Bonitatebus, PJ, Jernelius J, Schrock RR, Hoveyda AH. Molybdenum Imido Alkylidene Complexes Containing Biphen Ligands that Have Silyl Groups Attached through the 6 and 6‘ Methyl Group Carbon Atoms. Organometallics 2001. [DOI: 10.1021/om010430d] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kai C. Hultzsch
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, and Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02167
| | - Peter J. Bonitatebus,
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, and Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02167
| | - Jesper Jernelius
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, and Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02167
| | - Richard R. Schrock
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, and Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02167
| | - Amir H. Hoveyda
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, and Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02167
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39
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Rosillo M, Casarrubios L, Domı́nguez G, Pérez-Castells J. Synthesis of aromatic natural product frameworks using enyne metathesis. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01313-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Hoffmann T, Lanig H, Waibel R, Gmeiner P. Rational Molecular Design and EPC Synthesis of a Type VIβ-Turn Inducing Peptide Mimetic. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010917)113:18<3465::aid-ange3465>3.0.co;2-c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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Hoffmann T, Lanig H, Waibel R, Gmeiner P. Rational Molecular Design and EPC Synthesis of a Type VI beta-Turn Inducing Peptide Mimetic This work was supported by the BMBF and the Fonds der Chemischen Industrie. EPC=enantiomerically pure compound. Angew Chem Int Ed Engl 2001; 40:3361-3364. [PMID: 11592138 DOI: 10.1002/1521-3773(20010917)40:18<3361::aid-anie3361>3.0.co;2-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tobias Hoffmann
- Department of Medicinal Chemistry Emil Fischer Center, Friedrich-Alexander-University Schuhstrasse 19, 91052 Erlangen (Germany)
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42
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Nicolaou KC, Hughes R, Cho SY, Winssinger N, Labischinski H, Endermann R. Synthesis and biological evaluation of vancomycin dimers with potent activity against vancomycin-resistant bacteria: target-accelerated combinatorial synthesis. Chemistry 2001; 7:3824-43. [PMID: 11575783 DOI: 10.1002/1521-3765(20010903)7:17<3824::aid-chem3824>3.0.co;2-1] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Based on the notion that dimerization and/or variation of amino acid 1 of vancomycin could potentially enhance biological activity, a series of synthetic and chemical biology studies were undertaken in order to discover potent antibacterial agents. Herein we describe two ligation methods (disulfide formation and olefin metathesis) for dimerizing vancomycin derivatives and applications of target-accelerated combinatorial synthesis (e.g. combinatorial synthesis in the presence of vancomycin's target Ac2-L-Lys-D-Ala-D-Ala) to generate libraries of vancomycin dimers. Screening of these compound libraries led to the identification of a number of highly potent antibiotics effective against vancomycin-suspectible, vancomycin-intermediate resistant and, most significantly, vancomycin-resistant bacteria.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry, and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla 92037, USA
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43
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Cross-metathesis reaction. Generation of highly functionalized olefins from unsaturated alcohols. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(01)01125-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Fürstner A, Ackermann L, Gabor B, Goddard R, Lehmann CW, Mynott R, Stelzer F, Thiel OR. Comparative investigation of ruthenium-based metathesis catalysts bearing N-heterocyclic carbene (NHC) ligands. Chemistry 2001; 7:3236-53. [PMID: 11531110 DOI: 10.1002/1521-3765(20010803)7:15<3236::aid-chem3236>3.0.co;2-s] [Citation(s) in RCA: 377] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Exchange of one PCy3 unit of the classical Grubbs catalyst 1 by N-heterocyclic carbene (NHC) ligands leads to "second-generation" metathesis catalysts of superior reactivity and increased stability. Several complexes of this type have been prepared and fully characterized, six of them by X-ray crystallography. These include the unique chelate complexes 13 and 14 in which the NHC- and the Ru-CR entities are tethered to form a metallacycle. A particularly favorable design feature is that the reactivity of such catalysts can be easily adjusted by changing the electronic and steric properties of the NHC ligands. The catalytic activity also strongly depends on the solvent used; NMR investigations provide a tentative explanation of this effect. Applications of the "second-generation" catalysts to ring closing alkene metathesis and intramolecular enyne cycloisomerization reactions provide insights into their catalytic performance. From these comparative studies it is deduced that no single catalyst is optimal for different types of applications. The search for the most reactive catalyst for a specific transformation is facilitated by IR thermography allowing a rapid and semi-quantitative ranking among a given set of catalysts.
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Affiliation(s)
- A Fürstner
- Max-Planck-Institut für Kohlenforschung, Mülheim/Ruhr, Germany.
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45
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Cossy J, BouzBouz S, Hoveyda AH. Cross-metathesis reaction. Generation of highly functionalized olefins from unsaturated alcohols. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(00)00932-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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Krafft ME, Fu Z, Boñaga LVR. Synthesis of medium-sized rings using the intramolecular Pauson–Khand reaction. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(00)02299-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Fürstner A, Grabowski J, Lehmann CW, Kataoka T, Nagai K. Synthesis and biological evaluation of nonylprodigiosin and macrocyclic prodigiosin analogues. Chembiochem 2001; 2:60-8. [PMID: 11828428 DOI: 10.1002/1439-7633(20010105)2:1<60::aid-cbic60>3.0.co;2-p] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Nonylprodigiosin (4) and various of its analogues have been prepared by Suzuki cross-coupling reactions of a well accessible pyrrolyl triflate with (hetero)aryl boronic acid derivatives bearing alkenyl side chains. The resulting alkenes or dienes were subjected to metathesis dimerization or ring-closing metathesis (RCM) reactions, respectively, by using a ruthenium indenylidene complex as the catalyst. The biological activity of the products thus obtained was tested in two different assays monitoring i) the proliferation of murine spleen cells induced by lipopolysaccharides (LPS) and concanavalin A (Con A), and ii) the vacuolar acidification of baby hamster kidney (BHK) cells. Compounds 4 and 21 suppressed Con A-induced T-cell proliferation much more potently than LPS-induced B-cell proliferation. Furthermore, compounds 4 and 26 markedly inhibited vacuolar acidification, although other compounds exhibited no or only marginal effects. Thus, the immunosuppressive activity of prodigiosins toward T-cell proliferation seems to be mediated through cellular targets distinct from vacuolar acidification, and the prodigiosin analogues might be powerful tools to dissect these biological responses. The X-ray crystal structure of the macrocyclic product 25 has been determined, showing that the replacement of one pyrrole ring of the parent compound 4 by a phenyl group does not alter the overall electronic features of the remaining heterocyclic ring system of these alkaloids.
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Affiliation(s)
- A Fürstner
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr Germany.
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48
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Fürstner A, Radkowski K, Grabowski J, Wirtz C, Mynott R. Ring-closing alkyne metathesis. Application to the total synthesis of sophorolipid lactone. J Org Chem 2000; 65:8758-62. [PMID: 11112600 DOI: 10.1021/jo0012952] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first total synthesis of a major component of the microbial biosurfactant sophorolipid has been achieved. This approach to the 26-membered macrolide 1 containing a Z-configured alkene group in its lipidic tether spanning the sophorose backbone is based on a ring-closing metathesis reaction of diyne 21 catalyzed by Mo[N(t-Bu)(Ar)](3) (5; Ar = 3,5-dimethylphenyl) activated in situ by CH(2)Cl(2), followed by Lindlar reduction of the resulting cycloalkyne 22. The two beta-glycosidic linkages of compound 21 were installed by means of the glucal epoxide method and a modified Koenigs-Knorr reaction promoted by AgOTf/lutidine, respectively.
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Affiliation(s)
- A Fürstner
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany.
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49
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Variable and stereoselective synthesis of azasugar analogues by a ruthenium-catalyzed ring rearrangement. Org Lett 2000; 2:3971-4. [PMID: 11112620 DOI: 10.1021/ol000188r] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel ruthenium-catalyzed ring opening/ring closing tandem metathesis reaction with a catalytic transfer of stereocenters from a ring to an olefinic chain is described. This ring rearrangement serves as the key step in the stereoselective synthesis of the new azasugar analogues 1 and 2.
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50
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Wu Y, Esser L, De Brabander JK. Revision of the Absolute Configuration of Salicylihalamide A through Asymmetric Total Synthesis. Angew Chem Int Ed Engl 2000; 39:4308-4310. [PMID: 29711902 DOI: 10.1002/1521-3773(20001201)39:23<4308::aid-anie4308>3.0.co;2-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2000] [Indexed: 11/08/2022]
Affiliation(s)
- Yusheng Wu
- Department of Biochemistry University of Texas Southwestern Medical Center at Dallas 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA, Fax: (+1) 214-648-6455
| | - Lothar Esser
- Department of Biochemistry University of Texas Southwestern Medical Center at Dallas 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA, Fax: (+1) 214-648-6455
| | - Jef K De Brabander
- Department of Biochemistry University of Texas Southwestern Medical Center at Dallas 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA, Fax: (+1) 214-648-6455
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