1
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Gao Y, Baran PS. Nickel-Catalyzed Enantioselective Decarboxylative Acylation: Rapid, Modular Access to α-Amino Ketones. Angew Chem Int Ed Engl 2023; 62:e202315203. [PMID: 37939247 PMCID: PMC10842042 DOI: 10.1002/anie.202315203] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/10/2023]
Abstract
A new approach to the enantiocontrolled synthesis of α-amino ketone derivatives is disclosed by employing a decarboxylative acylation strategy. Thus, when an acyl chloride and an α-amido-containing redox-active ester are exposed to a nickel catalyst, chiral ligand, and metal reductant, α-amido ketones are produced in good yield and high ee. The reaction exhibits broad substrate scope, can be easily scaled up, and is applied to dramatically simplify the synthesis of several known structures.
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Affiliation(s)
- Yang Gao
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Phil S Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
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2
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Jin T, Lu C, Ham WH, Zhao L, Zheng ZB. Total Synthesis of Natural Products and Medicinal Molecules via Chelation-Controlled Diastereoselective Hydride Reduction of Amino Ketones. HETEROCYCLES 2022. [DOI: 10.3987/rev-21-969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Yadav NN, Lee YG, Srivastava N, Ha HJ. Alkylative Ring-Opening of Bicyclic Aziridinium Ion and Its Application for Alkaloid Synthesis. Front Chem 2019; 7:460. [PMID: 31316970 PMCID: PMC6610304 DOI: 10.3389/fchem.2019.00460] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/11/2019] [Indexed: 11/13/2022] Open
Abstract
Alkylative ring-opening of bicyclic aziridinium ion generated from 4-hydroxybutylaziridine with organocopper reagent was achieved successfully to afford 2-alkylsubstituted piperidine in high or moderate yield. This method allowed carbon-carbon bond formation of "non-activated" aziridine via aziridinium ion ring-opening in regio- and stereo-selective manner for the first time. This newly developed reaction was applied for an efficient synthesis of alkaloid with the representative example of conine and epiquinamide.
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Affiliation(s)
- Nagendra Nath Yadav
- Department of Chemistry, North Eastern Regional Institute of Science and Technology, Nirjuli, India
| | - Young-Gun Lee
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, South Korea
| | - Nikhil Srivastava
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, South Korea
| | - Hyun-Joon Ha
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, South Korea
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4
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5
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Ajay S, Saidhareddy P, Shaw AK. A Substrate-Directed Diastereoselective Synthesis of Vicinal Diamines Using an A3
-Coupling Strategy: An Application to the Total Synthesis of (+)- and (−)-Epiquinamides. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Sama Ajay
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute (CSIR-CDRI); Sector 10, Jankipuram Extension Lucknow- 226031, U. P. India
| | - Puli Saidhareddy
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute (CSIR-CDRI); Sector 10, Jankipuram Extension Lucknow- 226031, U. P. India
| | - Arun K. Shaw
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute (CSIR-CDRI); Sector 10, Jankipuram Extension Lucknow- 226031, U. P. India
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6
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Abstract
Indolizidine and quinolizidine derivatives are readily assembled from proline or pipecolic acid and γ-nitroaldehydes by means of a decarboxylative annulation process. These reactions are promoted by simple acetic acid and involve azomethine ylides as reactive intermediates. The method was applied to the synthesis of an epiquinamide analog.
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Affiliation(s)
- YoungKu Kang
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
| | - Daniel Seidel
- Department of Chemistry and
Chemical Biology, Rutgers, The State University
of New Jersey, Piscataway, New Jersey 08854, United States
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7
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Si CM, Mao ZY, Dong HQ, Du ZT, Wei BG, Lin GQ. Divergent Method to trans-5-Hydroxy-6-alkynyl/alkenyl-2-piperidinones: Syntheses of (−)-Epiquinamide and (+)-Swainsonine. J Org Chem 2015; 80:5824-33. [DOI: 10.1021/acs.joc.5b00803] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Chang-Mei Si
- School
of Pharmacy, Department of Chemistry and Institutes of Biomedical
Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
- College
of Science, Northwest Agriculture and Forestry University, Shaanxi Yangling, 712100, China
| | - Zhuo-Ya Mao
- School
of Pharmacy, Department of Chemistry and Institutes of Biomedical
Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
- College
of Science, Northwest Agriculture and Forestry University, Shaanxi Yangling, 712100, China
| | - Han-Qing Dong
- Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zhen-Ting Du
- College
of Science, Northwest Agriculture and Forestry University, Shaanxi Yangling, 712100, China
| | - Bang-Guo Wei
- School
of Pharmacy, Department of Chemistry and Institutes of Biomedical
Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Guo-Qiang Lin
- School
of Pharmacy, Department of Chemistry and Institutes of Biomedical
Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
- Shanghai
Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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8
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Abstract
This review of simple indolizidine and quinolizidine alkaloids (i.e., those in which the parent bicyclic systems are in general not embedded in polycyclic arrays) is an update of the previous coverage in Volume 55 of this series (2001). The present survey covers the literature from mid-1999 to the end of 2013; and in addition to aspects of the isolation, characterization, and biological activity of the alkaloids, much emphasis is placed on their total synthesis. A brief introduction to the topic is followed by an overview of relevant alkaloids from fungal and microbial sources, among them slaframine, cyclizidine, Steptomyces metabolites, and the pantocins. The important iminosugar alkaloids lentiginosine, steviamine, swainsonine, castanospermine, and related hydroxyindolizidines are dealt with in the subsequent section. The fourth and fifth sections cover metabolites from terrestrial plants. Pertinent plant alkaloids bearing alkyl, functionalized alkyl or alkenyl substituents include dendroprimine, anibamine, simple alkaloids belonging to the genera Prosopis, Elaeocarpus, Lycopodium, and Poranthera, and bicyclic alkaloids of the lupin family. Plant alkaloids bearing aryl or heteroaryl substituents include ipalbidine and analogs, secophenanthroindolizidine and secophenanthroquinolizidine alkaloids (among them septicine, julandine, and analogs), ficuseptine, lasubines, and other simple quinolizidines of the Lythraceae, the simple furyl-substituted Nuphar alkaloids, and a mixed quinolizidine-quinazoline alkaloid. The penultimate section of the review deals with the sizable group of simple indolizidine and quinolizidine alkaloids isolated from, or detected in, ants, mites, and terrestrial amphibians, and includes an overview of the "dietary hypothesis" for the origin of the amphibian metabolites. The final section surveys relevant alkaloids from marine sources, and includes clathryimines and analogs, stellettamides, the clavepictines and pictamine, and bis(quinolizidine) alkaloids.
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9
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Scope and limitations of the synthesis of functionalized quinolizidinones and related compounds by a simple precursor approach via addition of lithium allylmagnesates to 2-pyridones and RCM as key steps. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Yolacan C, Mavis ME, Aydogan F. Evaluation of mono- and dipeptides as organocatalysts for enantioselective aldol reaction. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Tasso B, Novelli F, Sparatore F, Fasoli F, Gotti C. (+)-Laburnamine, a natural selective ligand and partial agonist for the α4β2 nicotinic receptor subtype. JOURNAL OF NATURAL PRODUCTS 2013; 76:727-731. [PMID: 23461628 DOI: 10.1021/np3007028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
(+)-Laburnamine (1), a rare alkaloid extracted from Laburnum anagyroides seeds (∼4 mg from 1 kg), was shown to bind with high affinity (Ki, 293 nM) to the α4β2 nicotinic receptor subtype, which is, respectively, 126 and 136 times higher than to the α3β4 (Ki 37 μM) and α7 subtypes (Ki 40 μM). When its ability to release [(3)H]-dopamine from striatal slices was tested in a functional assay, compound 1 behaved as a partial agonist with an EC50 of 5.8 μM and an Emax that was 43% that of nicotine. When incubated with nicotine in the same assay, 1 prevented a maximal effect from being reached.
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Affiliation(s)
- Bruno Tasso
- Dipartimento di Farmacia, Università degli Studi di Genova, Viale Benedetto XV, 3, I-16132 Genova, Italy.
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12
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Senter TJ, Schulte ML, Konkol LC, Wadzinski TE, Lindsley CW. A General, Enantioselective Synthesis of 1-Azabicyclo[ m.n.0]alkane Ring Systems. Tetrahedron Lett 2013; 54:1645-1648. [PMID: 23459400 DOI: 10.1016/j.tetlet.2013.01.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this Letter, we describe a novel approach for the general and enantioselective synthesis of a diverse array of small to large 1-azabicyclo[m.n.0]alkyl ring systems with an embedded olefin handle for further functionalization. The stereochemistry is established via a highly diastereoselective indium-mediated allylation of an Ellman sulfinimine in greater than 9:1 dr., which is readily separable by column chromatography to afford a single diastereomer. This methodology allows for the rapid preparation of 1-azabicyclo[m.n.0]alkane ring systems that are not readily accessible through any other chemistry in excellent overall yields and, for many systems, the only enantioselective preparation reported to date.
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Affiliation(s)
- Timothy J Senter
- Department of Chemistry, Vanderbilt University, Nashville, TN 37232, USA
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13
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A hydrozirconation/iodination-mediated access to tetrahydroquinolizinium salts. Application to the synthesis of Lupinine and (−)-Epiquinamide. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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14
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Amat M, Semak V, Escolano C, Molins E, Bosch J. Enantioselective, protecting group-free synthesis of 1S-ethyl-4-substituted quinolizidines. Org Biomol Chem 2012; 10:6866-75. [PMID: 22837110 DOI: 10.1039/c2ob25392e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical enantioselective protecting group-free four-step route to the key quinolizidinone 6 from phenylglycinol-derived bicyclic lactam 1 is reported. The Grignard addition reaction to 6 takes place stereoselectively to give 1-ethyl-4-substituted quinolizidines 4-epi-207I and 7-9. Following a similar synthetic sequence, 9a-epi-6 is also accessed. However, the addition of Grignard reagents to 9a-epi-6 proceeds in a non-stereoselective manner. In order to gain insight into the different stereochemical outcome in the two series, theoretical calculations on the iminium salts A and B have been performed. The study concludes that the addition of the hydride, which is the step that determines the configuration of the final products, occurs in a stereoelectronic controlled manner. The theoretical study is in agreement with the experimental results.
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Affiliation(s)
- Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy, Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain.
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15
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Archibald G, Lin CP, Boyd P, Barker D, Caprio V. A Divergent Approach to 3-Piperidinols: A Concise Syntheses of (+)-Swainsonine and Access to the 1-Substituted Quinolizidine Skeleton. J Org Chem 2012; 77:7968-80. [DOI: 10.1021/jo3011914] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Glenn Archibald
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Chih-Pei Lin
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Peter Boyd
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - David Barker
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Vittorio Caprio
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
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16
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Merino P, Tejero T, Greco G, Marca E, Delso I, Gómez-SanJuan A, Matute R. Recent Advances on the Synthesis of Piperidines through Ruthenium-Catalyzed Ring-Closing Metathesis (RCM) Reactions. HETEROCYCLES 2012. [DOI: 10.3987/rev-11-sr(p)1] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Fustero S, Moscardó J, Sánchez-Roselló M, Flores S, Guerola M, Pozo CD. Organocatalytic enantioselective synthesis of quinolizidine alkaloids (+)-myrtine, (−)-lupinine, and (+)-epiepiquinamide. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Fun HK, Shahani T, Kumar R, Isloor AM, Shivananda KN. N-(5-Bromo-pyridin-2-yl)acetamide. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2043. [PMID: 22091070 PMCID: PMC3213491 DOI: 10.1107/s1600536811027553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2011] [Accepted: 07/09/2011] [Indexed: 11/10/2022]
Abstract
The asymmetric unit of the title compound, C7H7BrN2O, contains two molecules, in one of which the methyl H atoms are disorderd over two orientations in a 0.57 (3):0.43 (3) ratio. The dihedral angles between the pyridine rings and the acetamide groups are 7.27 (11) and 8.46 (11)°. In the crystal, molecules are linked by N—H⋯O and C—H⋯O hydrogen bonds generating bifurcated R21(5) ring motifs, which in turn lead to [110] chains.
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19
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Radical cyclizations of acylsilanes in the synthesis of (+)-swainsonine and formal synthesis of (−)-epiquinamide. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.048] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Gupta P, Dharuman S, Vankar YD. (3S,4R,5R)-3-(2-Hydroxyethyl)piperidine-3,4,5-triol as an isofagomine analogue: synthesis and glycosidase inhibition study. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.11.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Kise N, Fukazawa K, Sakurai T. Electroreductive intramolecular coupling of aliphatic cyclic imides with ketones and O-methyloximes. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.08.081] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Shaikh TM, Sudalai A. Enantioselective Synthesis of (+)-α-Conhydrine and (-)-Sedamine by L-Proline-Catalysed α-Aminooxylation. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000169] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Pham VT, Joo JE, Lee KY, Kim TW, Mu Y, Ham WH. Stereoselective intramolecular cyclization of γ-allylbenzamide via π–allylpalladium complex catalyzed by Pd(0). Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.01.075] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Tuan LA, Pyeon H, Kim G. Asymmetric and diastereodivergent approach to key intermediates for the synthesis of homopumiliotoxin 223G and epiquinamide isomer. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.10.098] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Airiau E, Spangenberg T, Girard N, Breit B, Mann A. Short Access to (+)-Lupinine and (+)-Epiquinamide via Double Hydroformylation. Org Lett 2009; 12:528-31. [DOI: 10.1021/ol902718q] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Etienne Airiau
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, D-79104 Freiburg, Germany
| | - Thomas Spangenberg
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, D-79104 Freiburg, Germany
| | - Nicolas Girard
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, D-79104 Freiburg, Germany
| | - Bernhard Breit
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, D-79104 Freiburg, Germany
| | - André Mann
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, D-79104 Freiburg, Germany
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Srivastava AK, Das SK, Panda G. An approach towards the total synthesis of (+)-epiquinamide and (+)-α-conhydrine from Garner aldehyde. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.074] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Gupta P, Vankar YD. Facile Aza-Claisen Rearrangement of Glycals: Application in the Synthesis of 1-Deoxy-L-iminosugars. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801301] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Fitch RW, Sturgeon GD, Patel SR, Spande TF, Garraffo HM, Daly JW, Blaauw RH. Epiquinamide: a poison that wasn't from a frog that was. JOURNAL OF NATURAL PRODUCTS 2009; 72:243-7. [PMID: 19245264 PMCID: PMC3107123 DOI: 10.1021/np8005452] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In 2003, we reported the isolation, structure elucidation, and pharmacology of epiquinamide (1), a novel alkaloid isolated from an Ecuadoran poison frog, Epipedobates tricolor. Since then, several groups, including ours, have undertaken synthetic efforts to produce this compound, which appeared initially to be a novel, beta2-selective nicotinic acetylcholine receptor agonist. Based on prior chiral GC analysis of synthetic and natural samples, the absolute structure of this alkaloid was established as (1S,9aS)-1-acetamidoquinolizidine. We have synthesized the (1R*,9aS*)-isomer (epi-epiquinamide) using an iminium ion nitroaldol reaction as the key step. We have also synthesized ent-1 semisynthetically from (-)-lupinine. Synthetic epiquinamide is inactive at nicotinic receptors, in accord with recently published reports. We have determined that the activity initially reported is due to cross-contamination from co-occurring epibatidine in the isolated material.
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Affiliation(s)
- Richard W Fitch
- Department of Chemistry, Indiana State University, 600 Chestnut Street, Science S35E, Terre Haute, Indiana 47809, USA.
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31
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Kumari N, Vankar YD. Synthesis and glycosidase-inhibitory activity of novel polyhydroxylated quinolizidines derived from d-glycals. Org Biomol Chem 2009; 7:2104-9. [DOI: 10.1039/b900011a] [Citation(s) in RCA: 34] [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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32
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Kumari N, Reddy BG, Vankar YD. Efficient and Stereodivergent Syntheses of D- and L-Fagomines and Their Analogues. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800796] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Abstract
The first total synthesis of somocystinamide A, a disulfide dimer with extremely labile enamide functional groups, was accomplished in a concise and stereospecific manner. Somocystinamide A is reported to possess exceptionally potent antiangiogenic and tumoricidal activities. The current work should enable further pharmacological investigation of this important natural product.
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Affiliation(s)
- Takashi L Suyama
- Scripps Institution of Oceanography and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA
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34
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Wijdeven MA, Wijtmans R, van den Berg RJF, Noorduin W, Schoemaker HE, Sonke T, van Delft FL, Blaauw RH, Fitch RW, Spande TF, Daly JW, Rutjes FPJT. N,N-Acetals as N-Acyliminium Ion Precursors: Synthesis and Absolute Stereochemistry of Epiquinamide. Org Lett 2008; 10:4001-3. [DOI: 10.1021/ol801490m] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marloes A. Wijdeven
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Roel Wijtmans
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Rutger J. F. van den Berg
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Wim Noorduin
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Hans E. Schoemaker
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Theo Sonke
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Floris L. van Delft
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Richard H. Blaauw
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Richard W. Fitch
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Thomas F. Spande
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - John W. Daly
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
| | - Floris P. J. T. Rutjes
- Radboud University Nijmegen, Institute for Molecules and Materials, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands, DSM Pharma Chemicals-Advanced Synthesis, Catalysis & Development, P.O. Box 18, 6160 MD Geleen, The Netherlands, Chiralix B.V., P.O. Box 31070, 6503 CB Nijmegen, The Netherlands, Department of Chemistry, Indiana State University, 600 Chestnut Street, Terre Haute, Indiana 47809, and Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases,
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Voituriez A, Ferreira F, Pérez-Luna A, Chemla F. Asymmetric Synthesis of (−)-1-Hydroxyquinolizidinone, a Common Intermediate for the Syntheses of (−)-Homopumiliotoxin 223G and (−)-Epiquinamide. Org Lett 2007; 9:4705-8. [DOI: 10.1021/ol701952y] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arnaud Voituriez
- Université Pierre et Marie Curie-Paris 6, Laboratoire de Chimie Organique (UMR CNRS 7611), Institut de Chimie Moléculaire (FR 2769), case 183, 4 place Jussieu, 75252 Paris Cedex 05, France
| | - Franck Ferreira
- Université Pierre et Marie Curie-Paris 6, Laboratoire de Chimie Organique (UMR CNRS 7611), Institut de Chimie Moléculaire (FR 2769), case 183, 4 place Jussieu, 75252 Paris Cedex 05, France
| | - Alejandro Pérez-Luna
- Université Pierre et Marie Curie-Paris 6, Laboratoire de Chimie Organique (UMR CNRS 7611), Institut de Chimie Moléculaire (FR 2769), case 183, 4 place Jussieu, 75252 Paris Cedex 05, France
| | - Fabrice Chemla
- Université Pierre et Marie Curie-Paris 6, Laboratoire de Chimie Organique (UMR CNRS 7611), Institut de Chimie Moléculaire (FR 2769), case 183, 4 place Jussieu, 75252 Paris Cedex 05, France
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A stereoselective total synthesis of (−)-andrachcinidine via an olefin cross-metathesis protocol. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.08.053] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Compain P. Olefin Metathesis of Amine-Containing Systems: Beyond the Current Consensus. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200700161] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Cluzeau J, Oishi S, Ohno H, Wang Z, Evans B, Peiper SC, Fujii N. Design and synthesis of all diastereomers of cyclic pseudo-dipeptides as mimics of cyclic CXCR4 pentapeptide antagonists. Org Biomol Chem 2007; 5:1915-23. [PMID: 17551641 DOI: 10.1039/b702649h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The four diastereomers of 2,5-bis[(3-guanidino)propyl]-1-[3-(4-hydroxyphenyl)propionyl]-7-(2-naphthylacetyl)-1,4,7-triazacycloundec-9-en-3-one (-) and of 2,5-bis[(3-guanidino)propyl]-1-(4-hydroxyphenylacetyl)-7-(2-naphthylacetyl)-1,4,7-triazacycloundec-9-en-3-one (-) were synthesized by a divergent methodology from l- and D-glutamic acids. The 11-membered ring core was made by ring closing metathesis of linear bis(allylamines), and the guanidyl functions were introduced by a simultaneous double Mitsunobu reaction using bis(Boc)guanidine. These compounds were designed to mimic cyclic pentapeptide FC131 (c[Gly-D-Tyr-Arg-Arg-Nal]).
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Affiliation(s)
- Jérôme Cluzeau
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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