1
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Paley RS, Hejna BG, Quevedo RE, Wong AR, Dow NW, Murphy JS, Choi S, Yu M, Rablen PR, Pike RD. N-Oxazolidinoyl Diene Iron(0) Tricarbonyl Complexes: Preparation by Diastereoselective Complexation and Synthetic Applications. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert S. Paley
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Benjamin G. Hejna
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Raundi E. Quevedo
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Alice R. Wong
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Nathan W. Dow
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Julia S. Murphy
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Sooyun Choi
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Mason Yu
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Paul R. Rablen
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, Pennsylvania 19081, United States
| | - Robert D. Pike
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
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2
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Srivastava N, Macha L, Ha HJ. Stereoselective synthesis of 2,6-disubstituted piperidine alkaloids. Org Biomol Chem 2020; 18:5493-5512. [PMID: 32478370 DOI: 10.1039/d0ob00918k] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Among the large number of structurally diverse alkaloids, 2,6-disubstituted piperidine and its analogs have often been targeted when exploiting new synthetic techniques perhaps because of their strong pharmacological properties. This review outlines synthetic strategies to build the 2,6-disubstituted piperidine structural motif with a focus on stereochemical control of two substituents at C2 and C6. The key reactions in this process are then classified on the basis of how the piperidine rings were built with specific examples of natural products that control the stereochemical outcomes and their transition states.
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Affiliation(s)
- Nikhil Srivastava
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea.
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3
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Dakermanji SJ, Westendorff KS, Pert EK, Wilson KB, Myers JT, Wilde JH, Dickie DA, Welch KD, Harman WD. Spatial Recognition Within Terpenes: Redox and H-bond Promoted Linkage Isomerizations and the Selective Binding of Complex Alkenes. Organometallics 2020; 39:1961-1975. [PMID: 33456102 DOI: 10.1021/acs.organomet.0c00151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A method for the resolution of η 2-alkene-complex isomers of the type MoTp(NO)(DMAP)(η 2-alkene) and WTp(NO)(PMe3)(η 2-alkene) (where Tp = hydridotris(pyrazolyl)-borate and DMAP = 4-(dimethylamino)pyridine) has been explored. Alkene and polyene compounds form as a mixture of kinetically trapped isomers. For both types of complexes, it was found that addition of either a fluorinated alcohol or one-electron oxidant reduces the number of isomers in solution. Accelerated ligand exchange was also observed, although these reactions were accompanied by significant decomposition.
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Affiliation(s)
- Steven J Dakermanji
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - Karl S Westendorff
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - Emmit K Pert
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - Katy B Wilson
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - Jeffery T Myers
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - Justin H Wilde
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - Diane A Dickie
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - Kevin D Welch
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
| | - W Dean Harman
- University of Virginia, Department of Chemistry, Charlottesville, Virginia 22904, United States
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4
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Mohajer F, Ziarani GM, Moradi R. The Study of Several Synthesis Methods of Indolizidine (±)-209I and (±)-209B as Natural Alkaloids. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200226113022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Natural products have received much attention due to their importance and
application. Indolizidine, categorized as an alkaloid, has several biological activities. The
synthesis of natural compounds such as indolizidines has attracted much attention from
many chemists’ and researchers’ perspectives. There are many areas to be explored in
this subject; that is why synthesizing indolizidine 209I and (±)-indolizidine 209B as
natural compounds have received much consideration. This review discloses the procedures
and methodology to provide (±)-indolizidine 209I and 209B due to the importance
of indolizidines.
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Affiliation(s)
| | | | - Razieh Moradi
- Department of Chemistry, Alzahra University, Tehran, Iran
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5
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6
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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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7
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Roy A, Bhat BA, Lepore SD. Carbon-Carbon Bond Formation Facilitated by π-Complexed Organometallic Auxiliaries: An Overview. LETT ORG CHEM 2019; 16:689-696. [PMID: 31316308 DOI: 10.2174/1570178616666181203141515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Organometallic moieties attached to substrates via π-complexation play an important role as auxiliaries. As described in the present review, η-linked auxiliaries have been employed to overcome numerous synthesis obstacles that continue to present significant challenges for catalyzed reactions. This has been particularly true in carbon-carbon bond forming reactions involving highly unsaturated systems such as arenes, dienes and allenes, which are emphasized here.
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Affiliation(s)
- Animesh Roy
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, and
| | - Bilal A Bhat
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Sanatnagar, Srinagar, India-190005
| | - Salvatore D Lepore
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, and
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8
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Are C, Pérez M, Bosch J, Amat M. Enantioselective formal synthesis of (+)-madangamine A. Chem Commun (Camb) 2019; 55:7207-7210. [DOI: 10.1039/c9cc03690c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A formal synthesis of (+)-madangamine A from phenylglycinol-derived lactam 1, involving the final closure of the peripheral rings from the skipped polyunsaturated diazatricyclic derivative 19, is reported.
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Affiliation(s)
- Celeste Are
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Food Sciences, and Institute of Biomedicine (IBUB)
- University of Barcelona
- 080028-Barcelona
- Spain
| | - Maria Pérez
- Department of Nutrition
- Food Sciences and Gastronomy
- Faculty of Pharmacy and Food Sciences, and Institute of Biomedicine (IBUB)
- University of Barcelona
- 08921-Santa Coloma de Gramenet
| | - Joan Bosch
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Food Sciences, and Institute of Biomedicine (IBUB)
- University of Barcelona
- 080028-Barcelona
- Spain
| | - Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Food Sciences, and Institute of Biomedicine (IBUB)
- University of Barcelona
- 080028-Barcelona
- Spain
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9
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Zhou DJ, Zhai YY, Kong JC, Wang ZH, Gong XY, Huang M, Yin SQ. Efficient Syntheses of Quinolizidine-Type Poison-Frog Alkaloids via Michael-Type Conjugate Addition. JOURNAL OF CHEMICAL RESEARCH 2018. [DOI: 10.3184/174751918x15242471686137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Efficient and flexible syntheses of 1,4-disubstituted quinolizidine-type poison-frog alkaloids using the highly stereoselective Michael-type conjugate addition reaction as the key step are described. The 1,4-disubstituted quinolizidine poison-frog alkaloids 233A, 235U and 251AA are reported.
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Affiliation(s)
- De-Jun Zhou
- Medical School, Henan Polytechnic University, Jiaozuo 454000, Henan Province, P.R. China
| | - Yang-Yang Zhai
- Medical School, Henan Polytechnic University, Jiaozuo 454000, Henan Province, P.R. China
| | - Ji-Chuan Kong
- Medical School, Henan Polytechnic University, Jiaozuo 454000, Henan Province, P.R. China
| | - Zhen-Hui Wang
- Medical School, Henan Polytechnic University, Jiaozuo 454000, Henan Province, P.R. China
| | - Xue-Yun Gong
- Medical School, Henan Polytechnic University, Jiaozuo 454000, Henan Province, P.R. China
| | - Mei Huang
- Medical School, Henan Polytechnic University, Jiaozuo 454000, Henan Province, P.R. China
| | - Shu-Qiang Yin
- Medical School, Henan Polytechnic University, Jiaozuo 454000, Henan Province, P.R. China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong Province, P.R. China
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10
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Kandepedu N, Abrunhosa-Thomas I, Troin Y. Stereoselective strategies for the construction of polysubstituted piperidinic compounds and their applications in natural products’ synthesis. Org Chem Front 2017. [DOI: 10.1039/c7qo00262a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An abridged and far-reaching review communication on the construction of the polysubstituted piperidinic core using diverse methodologies for the benefit of organic chemists interested in the total synthesis of biologically active compounds.
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Affiliation(s)
- Nishanth Kandepedu
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - Isabelle Abrunhosa-Thomas
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - Yves Troin
- Université Clermont Auvergne
- SIGMA Clermont
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
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11
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Park Y, Schindler CS, Jacobsen EN. Enantioselective Aza-Sakurai Cyclizations: Dual Role of Thiourea as H-Bond Donor and Lewis Base. J Am Chem Soc 2016; 138:14848-14851. [PMID: 27787993 PMCID: PMC5148636 DOI: 10.1021/jacs.6b09736] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An enantioselective, catalytic aza-Sakurai cyclization of chlorolactams has been developed as an efficient entry into indolizidine and quinolizidine frameworks. Structure-enantioselectivity relationship studies and mechanistic analysis point to a dual role of the catalyst wherein the thiourea moiety of the catalyst is engaged in both anion binding and Lewis base activation of a substrate.
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Affiliation(s)
- Yongho Park
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | | | - Eric N. Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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12
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Kawamura MY, Talero AG, Santiago JV, Garambel-Vilca E, Rosset IG, Burtoloso ACB. Six-Step Syntheses of (-)-1-Deoxyaltronojirimycin and (+)-1-Deoxymannonojirimycin from N-Z-O-TBDPS-l-serinal. J Org Chem 2016; 81:10569-10575. [PMID: 27501028 DOI: 10.1021/acs.joc.6b01575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Highly stereoselective six-step syntheses of (-)-1-deoxyaltronojirimycin (altro-DNJ) and (+)-1-deoxymannojirimycin (manno-DNJ) from N-Cbz-O-TBDPS-l-serinal are described. Key transformations involve a two-step preparation of a functionalized dihydropyridin-3-one as a common intermediate followed by Luche reduction and dihydroxylation (for altro-DNJ). The same sequence employing an epoxidation/epoxide opening in place of dihydroxylation furnishes manno-DNJ.
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Affiliation(s)
- Meire Y Kawamura
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Alexánder G Talero
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - João V Santiago
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Edson Garambel-Vilca
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Isac G Rosset
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
| | - Antonio C B Burtoloso
- Instituto de Química de São Carlos, Universidade de São Paulo , CEP 13560-970, São Carlos, SP, Brazil
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13
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Chattopadhyay AK, Hanessian S. Cyclic enaminones. Part II: applications as versatile intermediates in alkaloid synthesis. Chem Commun (Camb) 2016; 51:16450-67. [PMID: 26490499 DOI: 10.1039/c5cc05892a] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Among many other strategies, the enaminone approach is an important strategy to construct and diversify the azacyclic core in various alkaloids syntheses. In this brief review we discuss the application of cyclic enaminones as building blocks, as well as potential intermediates in the total synthesis of selected alkaloids.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
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14
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Braunstein H, Langevin S, Khim M, Adamson J, Hovenkotter K, Kotlarz L, Mansker B, Beng TK. Modular access to vicinally functionalized allylic (thio)morpholinonates and piperidinonates by substrate-controlled annulation of 1,3-azadienes with hexacyclic anhydrides. Org Biomol Chem 2016; 14:8864-8872. [PMID: 27714224 DOI: 10.1039/c6ob01526c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A modular substrate-controlled hexannulation of 1,3-azadienes with hexacyclic anhydrides, which affords versatile vicinally functionalized allylic lactams, in high yields, regio- and stereoselectivities is described.
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Affiliation(s)
| | - Spencer Langevin
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
| | - Monique Khim
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
| | - Jonathan Adamson
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
| | | | - Lindsey Kotlarz
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
| | - Brandon Mansker
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
| | - Timothy K. Beng
- Department of Chemistry
- Central Washington University
- Ellensburg
- USA
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15
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Beng TK, Silaire AWV, Alwali A, Bassler DP. One-shot access to α,β-difunctionalized azepenes and dehydropiperidines by reductive cross-coupling of α-selenonyl-β-selenyl enamides with organic bromides. Org Biomol Chem 2015; 13:7915-9. [PMID: 26135053 DOI: 10.1039/c5ob01003a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The synthesis of α- and α,β-functionalized azepenes and dehydropiperidines from readily prepared α-selenonyl eneformamides or enecarbamates has been achieved through Fe-catalyzed α-substitutive deselenonation, β-regioselective lithiation/trapping, and Co-catalyzed reductive cross-coupling protocols.
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Affiliation(s)
- Timothy K Beng
- Department of Chemistry, Susquehanna University, 514 University Avenue, Selinsgrove, PA 17870, USA.
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16
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Ishida N, Nečas D, Masuda Y, Murakami M. Enantioselective Construction of 3-Hydroxypiperidine Scaffolds by Sequential Action of Light and Rhodium upon N-Allylglyoxylamides. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502584] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Ishida N, Nečas D, Masuda Y, Murakami M. Enantioselective Construction of 3-Hydroxypiperidine Scaffolds by Sequential Action of Light and Rhodium upon N-Allylglyoxylamides. Angew Chem Int Ed Engl 2015; 54:7418-21. [DOI: 10.1002/anie.201502584] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Indexed: 11/06/2022]
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18
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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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19
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Roy A, Bhat BA, Lepore SD. Organo-manganese η2-auxiliary directed reactions: a diastereoselective approach to 2,3-allenols. Org Lett 2015; 17:900-3. [PMID: 25662282 PMCID: PMC4537065 DOI: 10.1021/ol503757h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Propargyl aldehydes underwent isomerization to allenyl aldehydes under mildly basic conditions when complexed to an organo-manganese auxiliary using methylcyclopentadienyl manganese tricarbonyl (MMT). This traceless auxiliary magnifies the axial chirality of the allene moiety, allowing for highly diastereoselective additions to the aldehyde carbonyl and subsequent access to an array of 2,3-allenols. Using this strategy, a nitrile-substituted 2,3-allenol was prepared and efficiently converted to Hagen's gland lactone.
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Affiliation(s)
- Animesh Roy
- Department of Chemistry, Florida Atlantic University, Boca Raton, Florida 33431-0991, United States
| | - Bilal A. Bhat
- Department of Chemistry, Florida Atlantic University, Boca Raton, Florida 33431-0991, United States
- Medicinal Chemistry Division, Indian Institute of Integrative Medicine (CSIR), Sanatnagar, Srinagar 190005, India
| | - Salvatore D. Lepore
- Department of Chemistry, Florida Atlantic University, Boca Raton, Florida 33431-0991, United States
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20
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Beng TK, Fox N. Diastereoselective synthesis of α,α,α′-trisubstituted pyrrolidines and piperidines by directed sequential lithiation/alkylation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2014.11.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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22
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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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23
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Ballette R, Pérez M, Proto S, Amat M, Bosch J. Total Synthesis of (+)-Madangamine D. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Ballette R, Pérez M, Proto S, Amat M, Bosch J. Total Synthesis of (+)-Madangamine D. Angew Chem Int Ed Engl 2014; 53:6202-5. [DOI: 10.1002/anie.201402263] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Indexed: 11/07/2022]
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25
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Lei BL, Zhang QS, Yu WH, Ding QP, Ding CH, Hou XL. Kinetic Resolution of 2-Substituted 2,3-Dihydro-4-pyridones by Palladium-Catalyzed Asymmetric Allylic Alkylation: Catalytic Asymmetric Total Synthesis of Indolizidine (−)-209I. Org Lett 2014; 16:1944-7. [DOI: 10.1021/ol500498m] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | | | - Wei-Hua Yu
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, 99
Ziyang Road, Nanchang 330022, China
| | - Qiu-Ping Ding
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, 99
Ziyang Road, Nanchang 330022, China
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26
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Hwang S, Park H, Kwon Y, Kim S. Acid promoted cyclodehydration of amino alcohols with amide acetal. RSC Adv 2014. [DOI: 10.1039/c4ra10625c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Intramolecular N-alkylation of amino alcohols using an amide acetal was developed that is widely applicable to the formation of azaheterocycles.
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Affiliation(s)
- Soonho Hwang
- College of Pharmacy
- Seoul National University
- Seoul 151-742, Korea
| | - Heemin Park
- College of Pharmacy
- Seoul National University
- Seoul 151-742, Korea
| | - Yongseok Kwon
- College of Pharmacy
- Seoul National University
- Seoul 151-742, Korea
| | - Sanghee Kim
- College of Pharmacy
- Seoul National University
- Seoul 151-742, Korea
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27
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Chen W, Sana K, Jiang Y, Meyer EVS, Lapp S, Galinski MR, Liebeskind LS. Regio- and Stereospecific Uncatalyzed Reactions of Electron-Rich Arenes and Olefins at Organomolybdenum Enantiomeric Scaffolds. Organometallics 2013. [DOI: 10.1021/om401087h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wenyong Chen
- Sanford S. Atwood Chemistry Center, Emory University, 1515 Dickey
Drive, Atlanta, Georgia 30322, United States
| | - Kasinath Sana
- Sanford S. Atwood Chemistry Center, Emory University, 1515 Dickey
Drive, Atlanta, Georgia 30322, United States
| | - Yi Jiang
- Sanford S. Atwood Chemistry Center, Emory University, 1515 Dickey
Drive, Atlanta, Georgia 30322, United States
| | - Esmerelda V. S. Meyer
- Emory Vaccine Center at Yerkes National Primate
Research Center, Emory University, Atlanta, Georgia 30329, United States
| | - Stacey Lapp
- Emory Vaccine Center at Yerkes National Primate
Research Center, Emory University, Atlanta, Georgia 30329, United States
| | - Mary R. Galinski
- Emory Vaccine Center at Yerkes National Primate
Research Center, Emory University, Atlanta, Georgia 30329, United States
- Emory University School of Medicine, Department
of Medicine, Division of Infectious Diseases, Emory University, Atlanta, Georgia 30322, United States
| | - Lanny S. Liebeskind
- Sanford S. Atwood Chemistry Center, Emory University, 1515 Dickey
Drive, Atlanta, Georgia 30322, United States
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28
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Xu X, Zhang L, Liu X, Pan L, Liu Q. Facile [7C+1C] Annulation as an Efficient Route to Tricyclic Indolizidine Alkaloids. Angew Chem Int Ed Engl 2013; 52:9271-4. [DOI: 10.1002/anie.201303604] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Revised: 06/04/2013] [Indexed: 11/07/2022]
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29
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Xu X, Zhang L, Liu X, Pan L, Liu Q. Facile [7C+1C] Annulation as an Efficient Route to Tricyclic Indolizidine Alkaloids. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303604] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xianxiu Xu
- Department of Chemistry, Northeast Normal University, Changchun, 130024 (China)
| | - Lingjuan Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024 (China)
| | - Xiqing Liu
- Department of Chemistry, Northeast Normal University, Changchun, 130024 (China)
| | - Ling Pan
- Department of Chemistry, Northeast Normal University, Changchun, 130024 (China)
| | - Qun Liu
- Department of Chemistry, Northeast Normal University, Changchun, 130024 (China)
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30
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Ischay MA, Takase MK, Bergman RG, Ellman JA. Unstabilized azomethine ylides for the stereoselective synthesis of substituted piperidines, tropanes, and azabicyclo[3.1.0] systems. J Am Chem Soc 2013; 135:2478-81. [PMID: 23398467 DOI: 10.1021/ja312311k] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Acid treatment of densely substituted 2-silyl-1,2-dihydropyridines provides a new and convenient entry to reactive azomethine ylides that can (1) be protonated and reduced with high stereoselectivity to give piperidines, (2) participate in [3 + 2] dipolar cycloaddition to give tropanes, and (3) undergo a Nazarov-like 6-π electrocyclization that upon reduction give 2-azabicyclo[3.1.0] systems.
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Affiliation(s)
- Michael A Ischay
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA
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31
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McCormack MP, Waters SP. Synthesis of functionalized indolizidines through Pauson-Khand cycloaddition of 2-allylpyrrolidines. J Org Chem 2013; 78:1176-83. [PMID: 23311620 DOI: 10.1021/jo302734w] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A concise entry to functionalized indolizidine scaffolds through a domino 2-aza-Cope-[3 + 2] dipolar cycloaddition and Pauson-Khand [2 + 2 + 1] cyclization has been accomplished. The process was conducted under mild conditions to afford diverse indolizidine systems as single diastereomers in good overall yields.
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Affiliation(s)
- Michael P McCormack
- Department of Chemistry, The University of Vermont, 82 University Place, Burlington, Vermont 05405, USA
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32
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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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33
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Ishida N, Yuhki T, Murakami M. Synthesis of Enantiopure Dehydropiperidinones from α-Amino Acids and Alkynes via Azetidin-3-ones. Org Lett 2012; 14:3898-901. [DOI: 10.1021/ol3016447] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoki Ishida
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Tatsuya Yuhki
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
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34
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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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35
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Duttwyler S, Lu C, Rheingold AL, Bergman RG, Ellman JA. Highly diastereoselective synthesis of tetrahydropyridines by a C-H activation-cyclization-reduction cascade. J Am Chem Soc 2012; 134:4064-7. [PMID: 22356093 PMCID: PMC3319108 DOI: 10.1021/ja2119833] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A versatile reaction cascade leading to highly substituted 1,2,3,6-tetrahydropyridines has been developed. It comprises rhodium(I)-catalyzed C-H activation-alkyne coupling followed by electrocyclization and subsequent acid/borohydride-promoted reduction. This one-pot procedure affords the target compounds in up to 95% yield with >95% diastereomeric purity.
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Affiliation(s)
- Simon Duttwyler
- Department of Chemistry, Yale University, New Haven, Connecticut, United States
| | - Colin Lu
- Department of Chemistry, Yale University, New Haven, Connecticut, United States
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, United States
| | - Robert G. Bergman
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, California, United States
| | - Jonathan A. Ellman
- Department of Chemistry, Yale University, New Haven, Connecticut, United States
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