1
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Xu WK, Guo JM, Liu CH, Sun JT, Lv M, Wei BG. AgNTf 2 catalyzed cycloaddition of N-acyliminium ions with alkynes for the synthesis of the 3,4-dihydro-1,3-oxazin-2-one skeleton. Org Biomol Chem 2022; 20:5086-5094. [PMID: 35698865 DOI: 10.1039/d2ob00900e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A catalyzed process for the synthesis of the 4,6-substituted 3,4-dihydro-1,3-oxazin-2-one skeleton has been developed through cycloaddition of in situ generated acyliminium intermediates with alkynes. A range of chain N,O-acetals and terminal alkynes were amenable for this mild transformation. As a result, a series of desired cycloaddition products were obtained in moderate to good yields.
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Affiliation(s)
- Wen-Ke Xu
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Jia-Ming Guo
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Chang-Hong Liu
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Jian-Ting Sun
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Min Lv
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
| | - Bang-Guo Wei
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
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2
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Nájera C, Foubelo F, Sansano JM, Yus M. Stereodivergent routes in organic synthesis: carbohydrates, amino acids, alkaloids and terpenes. Org Biomol Chem 2020; 18:1232-1278. [DOI: 10.1039/c9ob02419k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The natural occurrence of enantiomers and diastereomers is often encountered.
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Affiliation(s)
- Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
| | - Francisco Foubelo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica
| | - José M. Sansano
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
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3
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Zeng X, Sun J, Liu C, Ji C, Peng Y. Catalytic Asymmetric Cyanation Reactions of Aldehydes and Ketones in Total Synthesis. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900015] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xing‐Ping Zeng
- Key Laboratory of Small Functional Organic MoleculeMinistry of EducationJiangxi Normal University Nanchang Jiangxi 330022 People's Republic of China
| | - Jun‐Chao Sun
- Key Laboratory of Small Functional Organic MoleculeMinistry of EducationJiangxi Normal University Nanchang Jiangxi 330022 People's Republic of China
| | - Chao Liu
- Key Laboratory of Small Functional Organic MoleculeMinistry of EducationJiangxi Normal University Nanchang Jiangxi 330022 People's Republic of China
| | - Cong‐Bin Ji
- Jiangxi Provincial Research of Targeting Pharmaceutical Engineering TechnologyShangrao Normal University Shangrao Jiangxi 334001 People's Republic of China
| | - Yi‐Yuan Peng
- Key Laboratory of Small Functional Organic MoleculeMinistry of EducationJiangxi Normal University Nanchang Jiangxi 330022 People's Republic of China
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4
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Smullen S, McLaughlin NP, Evans P. Chemical synthesis of febrifugine and analogues. Bioorg Med Chem 2018; 26:2199-2220. [PMID: 29681487 DOI: 10.1016/j.bmc.2018.04.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/10/2018] [Accepted: 04/11/2018] [Indexed: 11/30/2022]
Abstract
The quinazolinone-containing 2,3-disubstituted piperidines febrifugine and isofebrifugine have been the subject of significant research efforts since their occurrence in Dichroa febrifuga and their anti-malarial actions were first described in the late 1940s. Subsequently they have also been shown to be present in other plants belonging to the hydrangea family and various analogues of febrifugine have been prepared in attempts to tune biological properties. The most notable analogue is termed halofuginone and a substantial body of work now demonstrates that this compound possesses potent human disease relevant activities. This review focuses on the literature associated with efforts dedicated towards uncovering the structures of febrifugine and isofebrifugine, the development of practical methods for their synthesis and the syntheses of structural analogues.
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Affiliation(s)
- Shaun Smullen
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin 4, Ireland
| | - Noel P McLaughlin
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin 4, Ireland
| | - Paul Evans
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin 4, Ireland.
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5
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Koleoso OK, Elsegood MRJ, Teat SJ, Kimber MC. Photoredox Approach to N-Acyl-N'-aryl-N,N'-aminals Using Enamides and Their Conversion to γ-Lactams. Org Lett 2018; 20:1003-1006. [PMID: 29373031 DOI: 10.1021/acs.orglett.7b03946] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A photoredox catalytic approach to synthetically valuable N-acyl-N'-aryl-N,N'-aminals is described. This method uses the addition of a radical precursor to enamides, with subsequent interception of the cationic iminium intermediate with an arylamine. The reaction has been shown to be compatible with electron-rich and electron-deficient arylamines, and moderate to good levels of diastereoselectivity can be attained using a chiral enamide. Furthermore, the N-acyl-N'-aryl-N,N'-aminal reaction products can be readily cyclized, providing a novel synthetic route to valuable γ-lactams.
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Affiliation(s)
- Olusesan K Koleoso
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
| | - Mark R J Elsegood
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
| | - Simon J Teat
- ALS, Berkeley Laboratory , 1 Cyclotron Road, MS2-400, Berkeley, California 94720, United States
| | - Marc C Kimber
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
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6
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Bracco P, Busch H, von Langermann J, Hanefeld U. Enantioselective synthesis of cyanohydrins catalysed by hydroxynitrile lyases - a review. Org Biomol Chem 2018; 14:6375-89. [PMID: 27282284 DOI: 10.1039/c6ob00934d] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first enantioselective synthesis was the selective addition of cyanide to benzaldehyde catalysed by a hydroxynitrile lyase (HNL). Since then these enzymes have been developed into a reliable tool in organic synthesis. HNLs to prepare either the (R)- or the (S)-enantiomer of the desired cyanohydrin are available and a wide variety of reaction conditions can be applied. As a result of this, numerous applications of these enzymes in organic synthesis have been described. Here the examples of the last decade are summarised, the enzyme catalysed step is discussed and the follow-up chemistry is shown. This proves HNLs to be part of main stream organic synthesis. Additionally the newest approaches via immobilisation and reaction engineering are introduced.
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Affiliation(s)
- Paula Bracco
- Gebouw voor Scheikunde, Biokatalyse, Afdeling Biotechnologie, Technische Universiteit Delft, Julianalaan 136, 2628BL Delft, The Netherlands.
| | - Hanna Busch
- Gebouw voor Scheikunde, Biokatalyse, Afdeling Biotechnologie, Technische Universiteit Delft, Julianalaan 136, 2628BL Delft, The Netherlands.
| | - Jan von Langermann
- Institute of Chemistry, University of Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Ulf Hanefeld
- Gebouw voor Scheikunde, Biokatalyse, Afdeling Biotechnologie, Technische Universiteit Delft, Julianalaan 136, 2628BL Delft, The Netherlands.
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8
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Ghinet A, Abuhaie CM, Homerin G, Marzag H, Dubois J, Lipka E, Rigo B, Daïch A. 1,3,5-Oxadiazine Framework by Oxygen vs. Nitrogen Trapping of anN-Acyliminium Ion Derived fromN,O-bis-TMS Pyroglutamic Acid. ChemistrySelect 2017. [DOI: 10.1002/slct.201701766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alina Ghinet
- Ecole des Hautes Etudes d'Ingénieur (HEI), Yncréa Hauts-de-France; Laboratoire de Pharmacochimie; 13 rue de Toul F-59046 Lille France
- Inserm, U995-LIRIC, CHRU de Lille; Faculté de Médecine-Pôle Recherche; 2 Place Verdun F-59045 Lille Cedex France
- Alexandru Ioan Cuza' University of Iasi; Faculty of Chemistry; Bd. Carol I nr. 11 700506 Iasi Romania
| | - Cristina-Maria Abuhaie
- Ecole des Hautes Etudes d'Ingénieur (HEI), Yncréa Hauts-de-France; Laboratoire de Pharmacochimie; 13 rue de Toul F-59046 Lille France
- Inserm, U995-LIRIC, CHRU de Lille; Faculté de Médecine-Pôle Recherche; 2 Place Verdun F-59045 Lille Cedex France
- Alexandru Ioan Cuza' University of Iasi; Faculty of Chemistry; Bd. Carol I nr. 11 700506 Iasi Romania
| | - Germain Homerin
- Ecole des Hautes Etudes d'Ingénieur (HEI), Yncréa Hauts-de-France; Laboratoire de Pharmacochimie; 13 rue de Toul F-59046 Lille France
- Inserm, U995-LIRIC, CHRU de Lille; Faculté de Médecine-Pôle Recherche; 2 Place Verdun F-59045 Lille Cedex France
| | - Hamid Marzag
- Normandie Univ., UNILEHAVRE, FR 3038 CNRS, URCOM; 76600 Le Havre France
| | - Joëlle Dubois
- Institut de Chimie des Substances Naturelles, UPR2301, CNRS; Centre de Recherche de Gif; Avenue de la Terrasse F-91198 Gif-sur-Yvette Cedex France
| | - Emmanuelle Lipka
- Inserm, U995-LIRIC, CHRU de Lille; Faculté de Médecine-Pôle Recherche; 2 Place Verdun F-59045 Lille Cedex France
- UFR Pharmacie; Laboratoire de Chimie Analytique , BP. 83; F-59006 Lille France
| | - Benoît Rigo
- Ecole des Hautes Etudes d'Ingénieur (HEI), Yncréa Hauts-de-France; Laboratoire de Pharmacochimie; 13 rue de Toul F-59046 Lille France
- Inserm, U995-LIRIC, CHRU de Lille; Faculté de Médecine-Pôle Recherche; 2 Place Verdun F-59045 Lille Cedex France
| | - Adam Daïch
- Normandie Univ., UNILEHAVRE, FR 3038 CNRS, URCOM; 76600 Le Havre France
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9
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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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10
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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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11
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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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12
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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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13
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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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14
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Sudhakar G, Bayya S, Kadam VD, Nanubolu JB. Total synthesis of gonytolides C and G, lachnone C, and formal synthesis of blennolide C and diversonol. Org Biomol Chem 2014; 12:5601-10. [DOI: 10.1039/c4ob00950a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The total syntheses of gonytolide C and related compounds have been accomplished from the aldol reaction between acetophenone derived from orcinol and butyrolactone containing ketone, followed by the diastereoselective intramolecular cyclization.
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Affiliation(s)
- Gangarajula Sudhakar
- Division of CPC (Organic Chemistry-II)
- CSIR-Indian Institute of Chemical Technology
- Tarnaka, India
- Academy of Scientific and Innovative Research
- New Delhi, India
| | - Shruthi Bayya
- Division of CPC (Organic Chemistry-II)
- CSIR-Indian Institute of Chemical Technology
- Tarnaka, India
- Academy of Scientific and Innovative Research
- New Delhi, India
| | - Vilas D. Kadam
- Division of CPC (Organic Chemistry-II)
- CSIR-Indian Institute of Chemical Technology
- Tarnaka, India
- Academy of Scientific and Innovative Research
- New Delhi, India
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15
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Indukuri K, Unnava R, Deka MJ, Saikia AK. Stereoselective Synthesis of Amido and Phenyl Azabicyclic Derivatives via a Tandem Aza Prins-Ritter/Friedel–Crafts Type Reaction of Endocyclic N-Acyliminium Ions. J Org Chem 2013; 78:10629-41. [DOI: 10.1021/jo401450j] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kiran Indukuri
- Department
of Chemistry Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - R. Unnava
- Department
of Chemistry Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Manash J. Deka
- Department
of Chemistry Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Anil K. Saikia
- Department
of Chemistry Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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16
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Kornecki KP, Briones JF, Boyarskikh V, Fullilove F, Autschbach J, Schrote KE, Lancaster KM, Davies HML, Berry JF. Direct Spectroscopic Characterization of a Transitory Dirhodium Donor-Acceptor Carbene Complex. Science 2013; 342:351-4. [DOI: 10.1126/science.1243200] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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17
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Pinho VD, Procter DJ, Burtoloso ACB. SmI2-Mediated Couplings of α-Amino Acid Derivatives. Formal Synthesis of (−)-Pumiliotoxin 251D and (±)-Epiquinamide. Org Lett 2013; 15:2434-7. [DOI: 10.1021/ol400903n] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vagner D. Pinho
- Instituto de Química de São Carlos, Universidade de São Paulo, CEP 13560-970, São Carlos, SP, Brazil, and The School of Chemistry, University of Manchester, Manchester, M13 9PL, U.K
| | - David J. Procter
- Instituto de Química de São Carlos, Universidade de São Paulo, CEP 13560-970, São Carlos, SP, Brazil, and The School of Chemistry, University of Manchester, Manchester, M13 9PL, U.K
| | - Antonio C. B. Burtoloso
- Instituto de Química de São Carlos, Universidade de São Paulo, CEP 13560-970, São Carlos, SP, Brazil, and The School of Chemistry, University of Manchester, Manchester, M13 9PL, U.K
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19
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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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20
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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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22
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Tsukano C, Oimura A, Enkhtaivan I, Takemoto Y. Synthesis of Highly Oxidized Quinolizidine via Reduction of Acylpyridinium Cations, and Total Syntheses of Quinolizidines 207I and 1-epi-207I. Org Lett 2012; 14:1902-5. [DOI: 10.1021/ol300541u] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chihiro Tsukano
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan
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23
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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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24
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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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25
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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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26
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27
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Wijdeven MA, Willemsen J, Rutjes FPJT. The 3‐Hydroxypiperidine Skeleton: Key Element in Natural Product Synthesis. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901494] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marloes A. Wijdeven
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands, Fax: +31‐24‐365‐3393
| | - Jorgen Willemsen
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands, Fax: +31‐24‐365‐3393
| | - Floris P. J. T. Rutjes
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands, Fax: +31‐24‐365‐3393
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Ritzen B, Hoekman S, Verdasco ED, van Delft FL, Rutjes FPJT. Enantioselective Chemoenzymatic Synthesis of cis- and trans-2,5-Disubstituted Morpholines. J Org Chem 2010; 75:3461-4. [DOI: 10.1021/jo1003295] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bas Ritzen
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
| | - Steven Hoekman
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
| | - Elena Durán Verdasco
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
| | - Floris L. van Delft
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
| | - Floris P. J. T. Rutjes
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
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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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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2008. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.07.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ritzen B, van Oers MCM, van Delft FL, Rutjes FPJT. Enantioselective chemoenzymatic synthesis of trans-aziridines. J Org Chem 2009; 74:7548-51. [PMID: 19743803 DOI: 10.1021/jo901548t] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A straightforward, five-step procedure for the synthesis of enantiomerically pure 2,3-disubstituted trans-aziridines has been developed starting from commercially available aldehydes. Hydroxynitrile lyase-mediated cyanohydrin formation provided cyanohydrins in excellent enantioselectivities and good yields. Subsequent formation of diastereomerically pure anti-amino alcohols via a one-pot Grignard addition-reduction sequence, Cu(II)-catalyzed diazotransfer, and triphenylphosphine-mediated reductive cyclization provided the corresponding trans-aziridines in good yields and excellent diastereoselectivities.
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Affiliation(s)
- Bas Ritzen
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands
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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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Verkade JMM, van der Pijl F, Willems MMJHP, Quaedflieg PJLM, van Delft FL, Rutjes FPJT. An Enantioselective Organocatalytic Approach to Both Enantiomers of Lasubine II. J Org Chem 2009; 74:3207-10. [DOI: 10.1021/jo900141f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jorge M. M. Verkade
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands, and DSM Pharmaceutical Products−Innovative Synthesis and Catalysis, P.O. Box 18, NL-6160 MD Geleen, The Netherlands
| | - Ferdi van der Pijl
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands, and DSM Pharmaceutical Products−Innovative Synthesis and Catalysis, P.O. Box 18, NL-6160 MD Geleen, The Netherlands
| | - Marian M. J. H. P. Willems
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands, and DSM Pharmaceutical Products−Innovative Synthesis and Catalysis, P.O. Box 18, NL-6160 MD Geleen, The Netherlands
| | - Peter J. L. M. Quaedflieg
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands, and DSM Pharmaceutical Products−Innovative Synthesis and Catalysis, P.O. Box 18, NL-6160 MD Geleen, The Netherlands
| | - Floris L. van Delft
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands, and DSM Pharmaceutical Products−Innovative Synthesis and Catalysis, P.O. Box 18, NL-6160 MD Geleen, The Netherlands
| | - Floris P. J. T. Rutjes
- Radboud University Nijmegen, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands, and DSM Pharmaceutical Products−Innovative Synthesis and Catalysis, P.O. Box 18, NL-6160 MD Geleen, The Netherlands
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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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Wijdeven MA, van den Berg RJF, Wijtmans R, Botman PNM, Blaauw RH, Schoemaker HE, van Delft FL, Rutjes FPJT. Complementary chemoenzymatic routes to both enantiomers of febrifugine. Org Biomol Chem 2009; 7:2976-80. [DOI: 10.1039/b901670h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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