1
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Renault J, Bouvry C, Cupif JF, Hurvois JP. Alkylation of N, N-Dibenzylaminoacetonitrile: From Five- to Seven-Membered Nitrogen-Containing Heterocyclic Systems. J Org Chem 2023; 88:3582-3598. [PMID: 36848662 DOI: 10.1021/acs.joc.2c02795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
The syntheses of several alkaloids and nitrogen-containing compounds including N-Boc-coniine (14b), pyrrolizidine (1), δ-coniceine (2), and pyrrolo[1,2a]azepine (3) are described. New C-C bonds in the α position relative to the nitrogen atom were formed by the alkylation of metalated α-aminonitriles 4 and 6a-c with alkyl iodides possessing the requisite size and functionality. In all of the reported cases, the pyrrolidine ring was formed in the aqueous medium through a favorable 5-exo-tet process involving a primary or a secondary amino group and a terminal δ-leaving group. Conversely, the azepane ring was efficiently formed in N,N-dimethylformamide (DMF), as the preferred aprotic solvent, through an unreported 7-exo-tet cyclization process involving a more nucleophilic sodium amide and a terminal mesylate borne by a saturated six carbon chain unit. In this way, we successfully synthesized pyrrolo[1,2a]azepane 3 and 2-propyl-azepane 14c in good yields from inexpensive and readily available materials without tedious separation methods.
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Affiliation(s)
- Jacques Renault
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques Rennes), UMR 6226, F-35000 Rennes, France
| | - Christelle Bouvry
- Comprehensive Cancer Center Eugène Marquis, Avenue de la Bataille Flandre-Dunkerque, 35000 Rennes, France
| | - Jean-François Cupif
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques Rennes), UMR 6226, F-35000 Rennes, France
| | - Jean-Pierre Hurvois
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques Rennes), UMR 6226, F-35000 Rennes, France
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2
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Liu S, Su X, Jiang D, Xiong H, Miao D, Fu L, Qiu H, He L, Zhang M. Arylation of Cyclopropanol with Pyrrole: Asymmetric Synthesis of Indolizidine 167B, Indolizidine 209D, and Monomorine I. Org Lett 2023; 25:2058-2062. [PMID: 36930849 DOI: 10.1021/acs.orglett.3c00406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
A Fe(NO3)3-mediated ring-opening arylation of cyclopropanol with the electron-rich pyrrole has been developed, which might proceed through oxidative radical ring opening of cyclopropanol followed by cyclization to the pyrrole motif and then aromatization. This method enables direct arylation of cyclopropanol without prefunctionalization and thus allows rapid access to a diverse array of chiral 5,6,7,8-tetrahydroindolizines from easily available chiral amino acid esters. The synthetic utility has been demonstrated by the asymmetric synthesis of alklaoids (-)-indolizidine 167B, (+)-indolizidine 209D, (+)-monomorine I, and a natural product analogue.
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Affiliation(s)
- Shuangwei Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Xiaojiao Su
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Dan Jiang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Hongbing Xiong
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Dingyin Miao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Lin Fu
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China
| | - Hanyue Qiu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.,Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China
| | - Ling He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Min Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Innovative Drug Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.,Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou 341000, China
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3
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Chen H, Huang YH, Ye JL, Huang PQ. Double Addition of Alkynyllithium Reagents to Amides/Lactams: A Direct and Flexible Synthesis of 3-Amino-1,4-diynes Bearing an Aza-Quaternary Carbon Center. J Org Chem 2019; 84:9270-9281. [PMID: 31287315 DOI: 10.1021/acs.joc.9b01416] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient and mild protocol for the direct and flexible synthesis of 3-amino-1,4-diynes bearing an aza-quaternary carbon from tertiary amides and lactams has been established. The one-pot method consists of in situ activation of amides with trifluoromethanesulfonic anhydride, followed by double addition of alkynyllithium reagents at a concentration of 0.5 mol·L-1 in dichloromethane. This constitutes an extension of the method of direct reductive bisalkylation of amides that allows both employing alkynyllithium reagents as the first-addition nucleophiles and incorporating an alkynyl group as the first-introduced group.
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Affiliation(s)
- Hang Chen
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , Fujian 361005 , P. R. China
| | - Ying-Hong Huang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , Fujian 361005 , P. R. China
| | - Jian-Liang Ye
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , Fujian 361005 , P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , Fujian 361005 , P. R. China
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4
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Kadyrov R. Reduction of Amides to Amines under Mild Conditions via Catalytic Hydrogenation of Amide Acetals and Imidates. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800855] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Renat Kadyrov
- Evonik Resource Efficiency GmbH Rodenbacher Chaussee 4 63457 Hanau-Wolfgang Germany
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5
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Kaiser D, Bauer A, Lemmerer M, Maulide N. Amide activation: an emerging tool for chemoselective synthesis. Chem Soc Rev 2018; 47:7899-7925. [PMID: 30152510 DOI: 10.1039/c8cs00335a] [Citation(s) in RCA: 232] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
It is textbook knowledge that carboxamides benefit from increased stabilisation of the electrophilic carbonyl carbon when compared to other carbonyl and carboxyl derivatives. This results in a considerably reduced reactivity towards nucleophiles. Accordingly, a perception has been developed of amides as significantly less useful functional handles than their ester and acid chloride counterparts. However, a significant body of research on the selective activation of amides to achieve powerful transformations under mild conditions has emerged over the past decades. This review article aims at placing electrophilic amide activation in both a historical context and in that of natural product synthesis, highlighting the synthetic applications and the potential of this approach.
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Affiliation(s)
- Daniel Kaiser
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria.
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6
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Costa BZ, Galman JL, Slabu I, France SP, Marsaioli AJ, Turner NJ. Synthesis of 2,5-Disubstituted Pyrrolidine Alkaloids via
A One-Pot Cascade Using Transaminase and Reductive Aminase Biocatalysts. ChemCatChem 2018. [DOI: 10.1002/cctc.201801166] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bruna Z. Costa
- School of Chemistry; University of Manchester Manchester Institute of Biotechnology; 131 Princess Street Manchester, M1 7DN (UK)
- Chemistry Institute; University of Campinas Rua Monteiro Lobato, 277. Barão Geraldo Campinas - SP.; 13083-970 Brazil
| | - James L. Galman
- School of Chemistry; University of Manchester Manchester Institute of Biotechnology; 131 Princess Street Manchester, M1 7DN (UK)
| | - Iustina Slabu
- School of Chemistry; University of Manchester Manchester Institute of Biotechnology; 131 Princess Street Manchester, M1 7DN (UK)
| | - Scott P. France
- School of Chemistry; University of Manchester Manchester Institute of Biotechnology; 131 Princess Street Manchester, M1 7DN (UK)
| | - Anita J. Marsaioli
- Chemistry Institute; University of Campinas Rua Monteiro Lobato, 277. Barão Geraldo Campinas - SP.; 13083-970 Brazil
| | - Nicholas J. Turner
- School of Chemistry; University of Manchester Manchester Institute of Biotechnology; 131 Princess Street Manchester, M1 7DN (UK)
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7
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Sato T, Yoritate M, Tajima H, Chida N. Total synthesis of complex alkaloids by nucleophilic addition to amides. Org Biomol Chem 2018; 16:3864-3875. [DOI: 10.1039/c8ob00733k] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
This mini review focuses on the recent progress of total synthesis of complex alkaloids based on the nucleophilic additions toN-alkoxyamides, tertiary amides and secondary amides.
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Affiliation(s)
- Takaaki Sato
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
| | - Makoto Yoritate
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
| | - Hayato Tajima
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
| | - Noritaka Chida
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
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8
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Mateo P, Cinqualbre JE, Meyer Mojzes M, Schenk K, Renaud P. Reductive Alkylation of Tertiary Lactams via Addition of Organocopper (RCu) Reagents to Thioiminium Ions. J Org Chem 2017; 82:12318-12327. [DOI: 10.1021/acs.joc.7b02150] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pierre Mateo
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Joséphine E. Cinqualbre
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Melinda Meyer Mojzes
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Kurt Schenk
- Laboratoire
de Magnétisme Quantique, Ecole Polytechnique Fédérale de Lausanne, BSP 314, Rte de la Sorge, CH-1015 Lausanne, Switzerland
| | - Philippe Renaud
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
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9
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Asai M, Takemoto Y, Deguchi A, Hattori Y, Makabe H. An asymmetric synthesis of (+)-monomorine I. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Li Y, Li J, Ding H, Li A. Recent advances on the total synthesis of alkaloids in mainland China. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AbstractAlkaloids are a large family of natural products that mostly contain basic nitrogen atoms. Because of their intriguing structures and important functions, they have long been popular targets for synthetic organic chemists. China's chemists have made significant progress in the area of alkaloid synthesis over past decades. In this article, selected total syntheses of alkaloids from research groups in mainland China during the period 2011–16 are highlighted.
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Affiliation(s)
- Yong Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310028, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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11
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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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12
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Huang PQ, Lang QW, Wang YR. Mild Metal-Free Hydrosilylation of Secondary Amides to Amines. J Org Chem 2016; 81:4235-43. [DOI: 10.1021/acs.joc.6b00572] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Pei-Qiang Huang
- Department
of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Qi-Wei Lang
- Department
of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Yan-Rong Wang
- Department
of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, PR China
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13
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Mao ZY, Geng H, Zhang TT, Ruan YP, Ye JL, Huang PQ. Stereodivergent and enantioselective total syntheses of isochaetominines A–C and four pairs of isochaetominine C enantiomers: a six-step approach. Org Chem Front 2016. [DOI: 10.1039/c5qo00298b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first total syntheses of (−)-isochaetominines A–C and eight 2,3-cis-stereoisomers of isochaetominine C, and structural revisions of (−)-pseudofischerine and (−)-aniquinazoline D.
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Affiliation(s)
- Zhong-Yi Mao
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Hui Geng
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Tian-Tian Zhang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Yuan-Ping Ruan
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Jian-Liang Ye
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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14
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Ye JL, Liu Y, Yang ZP, Huang PQ. The asymmetric total synthesis of (+)-N-acetyl norloline. Chem Commun (Camb) 2016; 52:561-3. [DOI: 10.1039/c5cc07480k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The asymmetric total synthesis of (+)-N-acetyl norloline, the putative biogenic precursor of all known loline alkaloids, has been achieved in 12 steps from a commercially available compound.
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Affiliation(s)
- Jian-Liang Ye
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Yang Liu
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Zhi-Ping Yang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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15
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Zheng X, He J, Li HH, Wang A, Dai XJ, Wang AE, Huang PQ. Titanocene(III)-Catalyzed Three-Component Reaction of Secondary Amides, Aldehydes, and Electrophilic Alkenes. Angew Chem Int Ed Engl 2015; 54:13739-42. [DOI: 10.1002/anie.201506907] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Indexed: 02/01/2023]
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16
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Zheng X, He J, Li HH, Wang A, Dai XJ, Wang AE, Huang PQ. Titanocene(III)-Catalyzed Three-Component Reaction of Secondary Amides, Aldehydes, and Electrophilic Alkenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506907] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Wang AE, Chang Z, Liu YP, Huang PQ. Mild N-deacylation of secondary amides by alkylation with organocerium reagents. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.05.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Geng H, Huang PQ. Versatile and chemoselective transformation of aliphatic and aromatic secondary amides to nitriles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.094] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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A general method for the direct transformation of common tertiary amides into ketones and amines by addition of Grignard reagents. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.074] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Shirokane K, Tanaka Y, Yoritate M, Takayama N, Sato T, Chida N. Total Syntheses of (±)-Gephyrotoxin and (±)-Perhydrogephyrotoxin. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20140398] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kenji Shirokane
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University
| | - Yuya Tanaka
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University
| | - Makoto Yoritate
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University
| | - Nobuaki Takayama
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University
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21
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Nakajima M, Sato T, Chida N. Iridium-Catalyzed Chemoselective Reductive Nucleophilic Addition to N-Methoxyamides. Org Lett 2015; 17:1696-9. [DOI: 10.1021/acs.orglett.5b00664] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Minami Nakajima
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Takaaki Sato
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry,
Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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22
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Huang PQ, Huang YH, Xiao KJ, Wang Y, Xia XE. A General Method for the One-Pot Reductive Functionalization of Secondary Amides. J Org Chem 2015; 80:2861-8. [DOI: 10.1021/jo502929x] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Pei-Qiang Huang
- Department
of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology,
Collaborative Innovation Centre of Chemistry for Energy Materials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ying-Hong Huang
- Department
of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology,
Collaborative Innovation Centre of Chemistry for Energy Materials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Kai-Jiong Xiao
- Department
of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology,
Collaborative Innovation Centre of Chemistry for Energy Materials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Yu Wang
- Department
of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology,
Collaborative Innovation Centre of Chemistry for Energy Materials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Xiao-Er Xia
- Department
of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology,
Collaborative Innovation Centre of Chemistry for Energy Materials,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
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23
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Zheng JF, Qian XY, Huang PQ. Direct transformation of amides: a one-pot reductive Ugi-type three-component reaction of secondary amides. Org Chem Front 2015. [DOI: 10.1039/c5qo00146c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An efficient reductive Ugi-type reaction employing common secondary amides as starting materials has been established. The reaction exhibited a broad substrate scope, good chemoselectivity and functional group tolerance.
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Affiliation(s)
- Jian-Feng Zheng
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Xiang-Yang Qian
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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24
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Huang PQ, Ou W, Ye JL. Aza-Knoevenagel-type condensation of secondary amides: direct access to N-monosubstituted β,β-difunctionalized enamines. Org Chem Front 2015. [DOI: 10.1039/c5qo00191a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient approach toN-monosubstituted β,β-difunctionalized enamines, a class of versatile building blocks for the synthesis of bioactive compounds, is reported.
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Affiliation(s)
- Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Wei Ou
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Jian-Liang Ye
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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25
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Huang PQ, Geng H. Simple, versatile, and chemoselective reduction of secondary amides and lactams to amines with the Tf2O–NaBH4 or Cp2ZrHCl–NaBH4 system. Org Chem Front 2015. [DOI: 10.1039/c4qo00317a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient method for the direct reduction of secondary amides and lactams to amines is reported.
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Affiliation(s)
- Pei-Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- Collaborative Innovation Centre of Chemistry for Energy Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Hui Geng
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- Collaborative Innovation Centre of Chemistry for Energy Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
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26
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Pace V, Holzer W, Olofsson B. Increasing the Reactivity of Amides towards Organometallic Reagents: An Overview. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400630] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Nakajima M, Oda Y, Wada T, Minamikawa R, Shirokane K, Sato T, Chida N. Chemoselective reductive nucleophilic addition to tertiary amides, secondary amides, and N-methoxyamides. Chemistry 2014; 20:17565-71. [PMID: 25345400 DOI: 10.1002/chem.201404648] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Indexed: 12/26/2022]
Abstract
As the complexity of targeted molecules increases in modern organic synthesis, chemoselectivity is recognized as an important factor in the development of new methodologies. Chemoselective nucleophilic addition to amide carbonyl centers is a challenge because classical methods require harsh reaction conditions to overcome the poor electrophilicity of the amide carbonyl group. We have successfully developed a reductive nucleophilic addition of mild nucleophiles to tertiary amides, secondary amides, and N-methoxyamides that uses the Schwartz reagent [Cp2 ZrHCl]. The reaction took place in a highly chemoselective fashion in the presence of a variety of sensitive functional groups, such as methyl esters, which conventionally require protection prior to nucleophilic addition. The reaction will be applicable to the concise synthesis of complex natural alkaloids from readily available amide groups.
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Affiliation(s)
- Minami Nakajima
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522 (Japan), Fax: (+81) 45-566-1551
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