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Heis F, Gallienne E, Martin OR. Synthesis of the aminocyclopentenediol fragment of queuosine by way of the stereoselective addition of an organometallic reagent to a N-t-butanesulfinyl glycosylamine. Org Biomol Chem 2023; 22:106-113. [PMID: 38050471 DOI: 10.1039/d3ob01713c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
An innovative, concise synthesis of the aminocyclopentenediol fragment of queuosine is reported. The synthesis is based on the stereocontrolled addition of a vinylGrignard·LiCl reagent to a t-butanesulfinyl L-ribofuranosylamine, followed by dehydrodeoxygenation to generate a second vinyl group and ring-closing metathesis to form the five-membered ring scaffold of the natural product. This approach has the potential for the development of a larger scale synthesis.
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Affiliation(s)
- Floriane Heis
- Institute of Organic and Analytical Chemistry, UMR 7311, University of Orleans and CNRS, Rue de Chartres, 45067 Orleans, France.
| | - Estelle Gallienne
- Institute of Organic and Analytical Chemistry, UMR 7311, University of Orleans and CNRS, Rue de Chartres, 45067 Orleans, France.
| | - Olivier R Martin
- Institute of Organic and Analytical Chemistry, UMR 7311, University of Orleans and CNRS, Rue de Chartres, 45067 Orleans, France.
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2
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Piperidine‐Mediated [3+2] Cyclization of Donor‐Acceptor Cyclopropanes and β‐Nitrostyrenes: Access to Polysubsituted Cyclopentenes with High Diastereoselectivity. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Harit VK, Ramesh NG. Ring closing metathesis (RCM) approach to the synthesis of conduramine B-2, ent-conduramine F-2, aminocyclopentitol and trihydroxyazepane. Org Biomol Chem 2019; 17:5951-5961. [PMID: 31166343 DOI: 10.1039/c9ob01010f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The syntheses of conduramine B-2, ent-conduramine F-2, aminocyclopentitol and trihydroxyazepane were accomplished from a common precursor, through a divergent approach using ring closing metathesis (RCM) as the key step. Tri-O-benzyl-d-glucal was converted to 3,4,6-tri-O-benzyl-1,2-dideoxy-2-iodo-1-p-toluenesulfonamido-α-d-mannose. Exposure to NaBH4 in MeOH resulted in a facile 1,2-transposition of the -NHTs group with concomitant glycosylation to give methyl 3,4,6-tri-O-benzyl-2-deoxy-2-p-toluenesulfonamido-β-d-glucoside, which was converted into methyl 6-deoxy-6-iodo-glucoside in three steps. Zinc-mediated Vasella's rearrangement proceeded smoothly to give the pluripotent formyl-olefin, possessing both electrophilic and nucleophilic sites, which was used as a common precursor in our diversity-oriented approach. Vinylation of the carbonyl group followed by RCM and subsequent deprotection resulted in the successful synthesis of conduramine B-2 and ent-conduramine F-2 for the first time. On the other hand, the Wittig reaction of the formyl-olefin affords the diene that undergoes Grubbs' I catalyzed RCM and deprotection/reduction to provide 3-amino-cyclopentan-1,2-diol. Utilizing the nucleophilic site at the nitrogen of the common precursor, base mediated N-allylation was carried out to obtain the corresponding diene that underwent a smooth RCM to afford trihydroxyazepane.
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Affiliation(s)
- Vimal Kant Harit
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi - 110016, India.
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Alishetty S, Shih HP, Han CC. One-Step, Effective, and Cascade Syntheses of Highly Functionalized Cyclopentenes with High Diastereoselectivity. Org Lett 2018; 20:2513-2516. [DOI: 10.1021/acs.orglett.8b00510] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Suman Alishetty
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Hong-Pin Shih
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Chien-Chung Han
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
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Abstract
The nitrosocarbonyls (R-CONO) are highly reactive species and remarkable intermediates toward different synthetic targets. This review will cover a research area whose impact in current organic synthesis is constantly increasing in the chemical community. This review represents the first and comprehensive picture on the generation and trapping of nitrosocarbonyls and is solidly built on more than 380 papers. Six different classes of key starting materials such as hydroxamic acids, N-hydroxy carbamates, N-hydroxyureas, nitrile oxides, and 1,2,4-oxadiazole-4-oxides were highlighted. The content of the review surveys all the methods to generate the nitrosocarbonyls through different approaches (oxidative, thermal, photochemical, catalytic, aerobic, and the less common ones) in the light of efficiency, yields, and mildness. The most successful trapping agents employed to catch these fleeting intermediates are reviewed, exploiting their superior dienophilic, enophilic, and electrophilic power. The work is completed by paragraphs dedicated to the detection of the intermediates, theoretical studies, and insights about the challenges and future directions for the field.
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Affiliation(s)
- Misal Giuseppe Memeo
- Dipartimento di Chimica, Università degli Studi di Pavia , Viale Taramelli 12, 27100 Pavia, Italy
| | - Paolo Quadrelli
- Dipartimento di Chimica, Università degli Studi di Pavia , Viale Taramelli 12, 27100 Pavia, Italy
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Cyclopentitol as a scaffold for a natural product-like compound library for drug discovery. Bioorg Med Chem 2015; 23:2650-5. [DOI: 10.1016/j.bmc.2015.01.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 01/20/2015] [Accepted: 01/22/2015] [Indexed: 11/18/2022]
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Li E, Chang M, Liang L, Huang Y. Divergent Phosphine-Catalyzed [2+4] or [3+2] Cycloaddition Reactions of γ-Substituted Allenoates with Oxadienes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403369] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Xie JW, Xu ML, Zhang RZ, Pan JY, Zhu WD. Organocatalytic Domino Reaction of Electron-Deficient 2,4-Dienes with 2-Halo-1,3-Dicarbonyl Compounds: A Highly Regio- and Stereoselective Approach to Functionalized Five-Membered Carbocycles. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300788] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Boutureira O, Matheu MI, Díaz Y, Castillón S. Advances in the enantioselective synthesis of carbocyclic nucleosides. Chem Soc Rev 2013; 42:5056-72. [DOI: 10.1039/c3cs00003f] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ji C, Lin W, Moraski GC, Thanassi JA, Pucci MJ, Franzblau SG, Möllmann U, Miller MJ. Syntheses and biological studies of novel spiropiperazinyl oxazolidinone antibacterial agents using a spirocyclic diene derived acylnitroso Diels-Alder reaction. Bioorg Med Chem 2012; 20:3422-8. [PMID: 22560837 PMCID: PMC3363956 DOI: 10.1016/j.bmc.2012.04.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 04/03/2012] [Accepted: 04/09/2012] [Indexed: 10/28/2022]
Abstract
Several novel oxazolidinone antibiotics with a spiropiperazinyl substituent at the 4'-position of the phenyl ring were synthesized through nitroso Diels-Alder chemistry and the in vitro antibacterial activities were evaluated against various Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus, Enterococcus faecalis), Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa) and mycobacteria (Mycobacterium vaccae, Mycobacterium tuberculosis). Analogs (8a and 12) were active against selected drug resistant microbes, like methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) and had no mammalian toxicity in a Hep-2 cellular assay (CC(50) >100 μM).
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Affiliation(s)
- Cheng Ji
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - Weimin Lin
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - Garrett C. Moraski
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - Jane A. Thanassi
- Achillion Pharmaceuticals, 300 George Street, New Haven, Connecticut, University of Illinois at Chicago, Chicago, Illinois 60612
| | - Michael J. Pucci
- Achillion Pharmaceuticals, 300 George Street, New Haven, Connecticut, University of Illinois at Chicago, Chicago, Illinois 60612
| | - Scott G. Franzblau
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612
| | - Ute Möllmann
- Leibniz Institute for Natural Product Research and Infection Biology - Hans Knoell Institute, Beutenbergstrasse 11a, 07745 Jena, Germany
| | - Marvin J. Miller
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
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12
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Savion M, Memeo MG, Bovio B, Grazioso G, Legnani L, Quadrelli P. Synthesis and molecular modeling of novel dihydroxycyclopentane-carbonitrile nor-nucleosides by bromonitrile oxide 1,3-dipolar cycloaddition. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.12.086] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bodnar BS, Miller MJ. The nitrosocarbonyl hetero-Diels-Alder reaction as a useful tool for organic syntheses. Angew Chem Int Ed Engl 2011; 50:5630-47. [PMID: 21520360 DOI: 10.1002/anie.201005764] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Indexed: 11/11/2022]
Abstract
Organic transformations that result in the formation of multiple covalent bonds within the same reaction are some of the most powerful tools in synthetic organic chemistry. Nitrosocarbonyl hetero-Diels-Alder (HDA) reactions allow for the simultaneous stereospecific introduction of carbon-nitrogen and carbon-oxygen bonds in one synthetic step, and provide direct access to 3,6-dihydro-1,2-oxazines. This Review describes the development of the nitrosocarbonyl HDA reaction and the utility of the resulting oxazine ring in the synthesis of a variety of important, biologically active molecules.
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Affiliation(s)
- Brian S Bodnar
- Chemspeed Technologies, Inc. 113 North Center Drive, North Brunswick, NJ 08906, USA
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Bodnar BS, Miller MJ. Hetero-Diels-Alder-Reaktionen von Nitrosocarbonylverbindungen als nützliches Verfahren in der organischen Synthese. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005764] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Quadrelli P, Romano S, Caramella P. Nonbonded Interactions Tune Selectivities in Cycloadditions to 2,3-Dioxabicyclo[2.2.2]oct-5-ene. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000732] [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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Ji C, Miller MJ. Cyclopropanation of nitroso Diels-Alder cycloadducts and application to the synthesis of a 2',3'-methano carbocyclic nucleoside. Tetrahedron Lett 2010; 51:3789-3791. [PMID: 20607121 PMCID: PMC2894734 DOI: 10.1016/j.tetlet.2010.05.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Treatment of nitroso Diels-Alder cycloadducts 1 with diazomethane in the presence of palladium acetate gives synthetically useful exo-6-oxa-7-azatricyclo[3.2.1.02,4]octane derivatives 7 in good to excellent yield. Using this methodology, a conformationally restricted 2',3'-methano carbocyclic nucleoside was efficiently synthesized from nitroso cycloadduct 1a in 7 steps.
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Affiliation(s)
- Cheng Ji
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana, 46556, United States
| | - Marvin J. Miller
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana, 46556, United States
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Yang B, Miller MJ. Regio- and stereochemically controlled formation of hydroxamic acids from indium triflate-mediated nucleophilic ring-opening reactions with acylnitroso-Diels-Alder adducts. Tetrahedron Lett 2010; 51:889-891. [PMID: 20209116 PMCID: PMC2830661 DOI: 10.1016/j.tetlet.2009.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of acylnitroso-Diels-Alder [2.2.1] bicyclic adducts 2a-b with indium triflate in an alcohol solvent induces ring opening reactions to afford monocyclic anti-1,2-, anti-1,4- and syn-1,4-hydroxamic acids with good to excellent regio- and stereoselectivity (up to 7:86:7). Treatment of [2.2.2] bicyclic nitroso adducts 2c-d under similar reaction conditions generates only anti-1,2- and anti-1,4-hydroxamic acids with anti-1,4-product predominant (up to 17:83).
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Affiliation(s)
- Baiyuan Yang
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, United States
| | - Marvin J. Miller
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, United States
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18
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Yang B, Miller MJ. Regio- and stereoselective indium triflate-mediated nucleophilic ring-opening reactions of 3-aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene systems. J Org Chem 2009; 74:7990-3. [PMID: 19754105 DOI: 10.1021/jo9016343] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Indium triflate-mediated nucleophilic ring-opening reactions of 3-aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene systems with alcohols and water were investigated. Reactions of [2.2.1] bicyclic systems gave anti-1,2-, anti-1,4- and syn-1,4-ring-opened products with moderate to excellent regio- and stereoselectivity. When [2.2.2] bicyclic systems were subjected to similar reaction conditions, only anti-1,2 and anti-1,4-ring-opened products were obtained.
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Affiliation(s)
- Baiyuan Yang
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Hall, Notre Dame, Indiana 46556, USA
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Machin BP, Ballantine M, Mandel J, Blanchard N, Tam W. Rhodium-catalyzed ring-opening reactions of a 3-aza-2-oxabicyclo[2.2.1]hept-5-ene with arylboronic acids. J Org Chem 2009; 74:7261-6. [PMID: 19731959 DOI: 10.1021/jo901248w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rhodium-catalyzed ring-opening reactions of a 3-aza-2-oxabicyclo[2.2.1]hept-5-ene with arylboronic acids were investigated. The use of [RhCl(COD)](2), (+/-)-BINAP, and NaHCO(3) in MeOH at 60 degrees C was found to be the optimized conditions for the ring-opening reactions to give the 1,2-ring-opened products. Various arylboronic acids were examined, and low to moderate yields were obtained and stereoselectivities (trans/cis) from 50:50 to 100:0 were observed.
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Affiliation(s)
- Ben P Machin
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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Quadrelli P, Bovio B, Piccinini A, Caramella P, De Sarlo F, Machetti F. Conversion of a nitrosocarbonyl hetero Diels–Alder cycloadduct to useful isoxazoline-carbocyclic aminols. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.10.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Machin BP, Howell J, Mandel J, Blanchard N, Tam W. Ruthenium-Catalyzed Nucleophilic Ring-Opening Reactions of a 3-Aza-2-oxabicyclo[2.2.1]hept-5-ene with Alcohols. Org Lett 2009; 11:2077-80. [DOI: 10.1021/ol900454q] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ben P. Machin
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Jennifer Howell
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Jérémie Mandel
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Nicolas Blanchard
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - William Tam
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
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Cesario C, Tardibono LP, Miller MJ. Titanocene(III) chloride-mediated reductions of oxazines, hydroxamic acids, and N-hydroxy carbamates. J Org Chem 2009; 74:448-51. [PMID: 19053586 DOI: 10.1021/jo802184y] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Titanocene(III) chloride (Cp(2)TiCl), generated in situ, reduces N-O bonds of various substrates in good to excellent yields (72-95%). Reactions may be performed with stoichiometric Cp(2)TiCl or with catalytic Cp(2)TiCl.
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Affiliation(s)
- Cara Cesario
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46545, USA
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Bodnar BS, Miller MJ. Brønsted acid-mediated opening of nitroso cycloadducts under anhydrous conditions. Tetrahedron Lett 2009; 50:796-798. [PMID: 20160837 DOI: 10.1016/j.tetlet.2008.11.120] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
An unusual bicyclic hydroxamate resulted from C-O bond cleavage of acylnitroso hetero-Diels-Alder cycloadducts when treated with catalytic Brønsted acids under anhydrous conditions. Similarly, the formation of a nitrone was observed using one equivalent of triflic acid.
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Affiliation(s)
- Brian S Bodnar
- Deparment of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556
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Klepper F, Jahn EM, Hickmann V, Carell T. Synthese des tRNA-Nucleosids Queuosin unter Verwendung eines chiralen Allylazid-Intermediats. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604579] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Klepper F, Jahn EM, Hickmann V, Carell T. Synthesis of the Transfer-RNA Nucleoside Queuosine by Using a Chiral Allyl Azide Intermediate. Angew Chem Int Ed Engl 2007; 46:2325-7. [PMID: 17310487 DOI: 10.1002/anie.200604579] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Florian Klepper
- Department of Chemistry and Biochemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377 Münich, Germany
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Oxenford SJ, O’Brien P, Shipton MR. Chiral base route to functionalised cyclopentenyl amines: formal synthesis of the cyclopentene core of nucleoside Q. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.10.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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