1
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Xu X, Li RP, Zhang Z, Gong X, Zheng Y, Tang S. Regioselective Synthesis of Multisubstituted 2,3-Dihydrooxazoles by 1,3-Dithiane Umpolung. Org Lett 2024; 26:6825-6829. [PMID: 39110706 DOI: 10.1021/acs.orglett.4c02176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Herein, we report a novel strategy for the regioselective synthesis of aromatic and heteroaromatic 2,3-dihydrooxazoles from 2-alkynyl-1,3-dithianes and nitrones. This method exploits the 1,3-dithiane umpolung, nucleophilic cycloaddition, and rearrangement processes to achieve the rapid assembly of dihydrooxazole molecules. The regioselective method is extremely mild, achieving complete conversion within one min under air at 25 °C with high efficiency.
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Affiliation(s)
- Xiangrong Xu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Rui-Peng Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhuzhu Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiaomeng Gong
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yi Zheng
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shouchu Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
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2
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Esteban A, Ortega P, Sanz F, Jambrina PG, Díez D. Crystallization-induced diastereomer transformation assists the diastereoselective synthesis of 4-nitroisoxazolidine scaffolds. Org Biomol Chem 2024; 22:6582-6592. [PMID: 39083363 DOI: 10.1039/d4ob01014k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
This communication describes a solution to the vexing problem of synthesis of 4-nitroisoxazolidine rings from cyclic nitrones and β-nitrostyrenes. The trans-endo adduct 2 is quantitatively synthesised from E-β-nitrostyrene under mild conditions avoiding purification, while the trans-exo adduct 4 is obtained at higher temperatures. Furthermore, a Crystallization-Induced Diastereomer Transformation (CIDT) process was used to epimerise the NO2 bond from 2 to the cis-exo adduct 3 with total conversion assisted by the para-halogen substitution of the aromatic ring without any additives. By combining these approaches, we can establish a simple synthetic methodology that allows the diastereoselective synthesis of three diastereoisomers, overcoming the previous problems described in the literature.
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Affiliation(s)
- Alberto Esteban
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Salamanca. Plaza de los Caídos 1-5, 37008 Salamanca, Spain.
| | - Pablo Ortega
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad de Salamanca. Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - Francisca Sanz
- Servicio de Difracción de Rayos X, Plataforma Nucleus, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - Pablo G Jambrina
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad de Salamanca. Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - David Díez
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Salamanca. Plaza de los Caídos 1-5, 37008 Salamanca, Spain.
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3
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Carneiro LM, Keppler AF, Ferreira FF, Homem-de-Mello P, Bartoloni FH. Mechanisms for the Deactivation of the Electronic Excited States of α-(2-Hydroxyphenyl)- N-phenylnitrone: From Intramolecular Proton and Charge Transfer to Structure Twisting and Aggregation. J Phys Chem B 2022; 126:7373-7384. [DOI: 10.1021/acs.jpcb.2c03924] [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)
- Leonardo Martins Carneiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Artur Franz Keppler
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Fabio Furlan Ferreira
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Paula Homem-de-Mello
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
| | - Fernando Heering Bartoloni
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados, 5001, Bloco A, Santo André 09210-580, São Paulo, Brazil
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4
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An Intramolecular Hydroaminomethylation-Based Approach to Pyrrolizidine Alkaloids under Microwave-Assisted Heating. Molecules 2022; 27:molecules27154762. [PMID: 35897934 PMCID: PMC9332719 DOI: 10.3390/molecules27154762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 12/04/2022] Open
Abstract
A general method for the synthesis of pyrrolizidine derivatives using an intramolecular hydroaminomethylation protocol (HAM) under microwave (MW) dielectric heating is reported. Starting from a 3,4-bis(benzyloxy)-2-[(benzyloxy)methyl]-5-vinylpyrrolidine, MW-assisted intramolecular HAM in the presence of gaseous H2 and CO gave the natural alkaloid hyacinthacine A2 protected as benzyl ether. The same approach gave a lentiginosine analogue starting from the corresponding vinyl N-hydroxypyrrolidine. The nature of the reaction products and the yields were strongly influenced by the relative stereochemistry of the starting pyrrolidines, as well as by the catalyst/ligand employed. The use of ethanol as a solvent provides environmentally friendly conditions, while the ligand/catalyst system can be recovered by separating the alkaloid product with an SCX column and recycling the ethanolic solution. HAM worked up to three times with the recycled catalyst solution without any significant impact on yield.
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5
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Li YX, Wang JZ, Shimadate Y, Kise M, Kato A, Jia YM, Fleet GWJ, Yu CY. Diastereoselective Synthesis, Glycosidase Inhibition, and Docking Study of C-7-Fluorinated Casuarine and Australine Derivatives. J Org Chem 2022; 87:7291-7307. [PMID: 35584209 DOI: 10.1021/acs.joc.2c00485] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
C-7-fluorinated derivatives of two important polyhydroxylated pyrrolizidines, casuarine and australine, were synthesized with organocatalytic stereoselective α-fluorination of aldehydes as the key step. The strategy is extensively applicable to some synthetically challenging fluorinated iminosugars and carbohydrates. The docking studies indicated that the potent inhibitions of trehalase and amyloglucosidase by the fluorinated polyhydroxylated pyrrolizidines are due to the interaction modes dominated by fluorine atoms in these iminosugars with the amino acids' residues of the corresponding enzymes. Steady interactions were established between the C-7 fluoride and a hydrophobic pocket in amyloglucosidase by untypical anion-π interactions. These unexpected docking modes and related structure-activity relationship studies emphasize the value of fluorination in the design of polyhydroxylated pyrrolizidine glycosidase inhibitors.
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Affiliation(s)
- Yi-Xian Li
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun-Zhe Wang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuna Shimadate
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.,Faculty of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Maki Kise
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.,Faculty of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.,Faculty of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Yue-Mei Jia
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - George W J Fleet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U. K
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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6
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Shukla G, Yadav D, Singh S, Shankar Singh M. Access to Nitrones from Amines via Electrocatalysis at Room Temperature. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gaurav Shukla
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Dhananjay Yadav
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Saurabh Singh
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
| | - Maya Shankar Singh
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 India
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7
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Carneiro LM, Bartoloni FH, Angolini CFF, Keppler AF. Solvent-free synthesis of nitrone-containing template as a chemosensor for selective detection of Cu(II) in water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120473. [PMID: 34715559 DOI: 10.1016/j.saa.2021.120473] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/21/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
A state-of-the-art method was developed for repurposing nitrone-containing compounds in the chemosensory field, the ability of the designed molecules to chelate metal cations was evaluated, and their unprecedented solubility in water was confirmed. A facile, rapid, and solvent-free method of synthesizing small molecular mass chemosensors was developed by using a modulative α-aryl-N-aryl nitrone template. α-(Z)-Imidazol-4-ylmethylen-N-phenyl nitrone (Nit1) and α-(Z)-2-pyridyl-N-phenyl nitrone (Nit2) were prepared in 15 min, isolated in less than 60 min with ca. 90% yield, and screened against nine metal cations. Nit1 is a small-molecular-mass compound (188 g mol-1) that is water-soluble and has specificity for sensing Cu2+ with an association constant of K = 1.53 × 1010 and a limit of detection (LOD) of 0.06 ppm. These properties make Nit1 a competitive chemosensor for the detection of Cu2+ in aqueous solution. The nitrone-containing template used in this study is a step forward for new and small chemosensory entities.
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Affiliation(s)
- Leonardo M Carneiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil
| | - Fernando H Bartoloni
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil
| | - Célio F F Angolini
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil
| | - Artur F Keppler
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, SP ZIP CODE 09210-580, Brazil.
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8
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Yang X, Guo X, Yuan X, Chen B. K 2S 2O 8-promoted rearrangement of nitrones for the synthesis of benzo[ d]oxazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo00680d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An efficient route for the synthesis of valuable benzoxazoles has been developed through self-oxidative cyclization with N–O bond cleavage.
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Affiliation(s)
- Xueying Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Xin Guo
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Xinglong Yuan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
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9
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Li YX, Wang JZ, Kato A, Shimadate Y, Kise M, Jia YM, Fleet GWJ, Yu CY. Stereocomplementary synthesis of casuarine and its 6- epi-, 7- epi-, and 6,7-di epi-stereoisomers. Org Biomol Chem 2021; 19:9410-9420. [PMID: 34668913 DOI: 10.1039/d1ob01725j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four diastereomers belonging to the family of casuarines, including casuarine (1), 6-epi-casuarine (2), 7-epi-casuarine (13) and 6,7-diepi-casuarine (14), have been synthesized from D-arabinose-derived cyclic nitrone 7 and nitrone-derived aldehyde 4 by a stereocomplementary strategy. Glycosidase inhibition comparison showed that 6-epi-casuarine (2) exhibits enhanced inhibition of trehalase (IC50 = 9.7 μM) and 6,7-diepi-casuarine (14) leads to specific inhibition of trehalase.
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Affiliation(s)
- Yi-Xian Li
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun-Zhe Wang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Yuna Shimadate
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Maki Kise
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Yue-Mei Jia
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - George W J Fleet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
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10
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Szcześniak P, Furman B. Concise synthesis of bicyclic iminosugars via reductive functionalization of sugar-derived lactams and subsequent RCM reaction. Org Biomol Chem 2021; 19:6842-6846. [PMID: 34318856 DOI: 10.1039/d1ob01172c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the synthesis of bicyclic iminosugars has been developed. The strategy is based on the partial reduction of sugar-derived lactams by Schwartz's reagent and tandem stereoselective nucleophile addition dictated by Woerpel's model which affords polyhydroxylated cyclic amines as key intermediates. Introduction of a vinyl or allyl group to the iminosugar produces diene derivatives that can be subjected to the ring-closing metathesis reaction (RCM) to furnish polyhydroxylated pyrrolizidine, indolizidine and quinozilidine derivatives in good to excellent yields. This sequence of reactions has been applied to the formal synthesis of hyacinthacine A2, a polyhydroxylated pyrrolizidine alkaloid.
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Affiliation(s)
- Piotr Szcześniak
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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11
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Reddy DS, Reddy GS, Beatriz A, Corey EJ. Contrasting Diastereoselectivity between Cyclic Nitrones and Azomethine Ylides. Stereocontrolled Pathways to cis- anti- anti-cis-Oxazatetraquinanes from a Bicyclic Nitrone. Org Lett 2021; 23:5445-5447. [PMID: 34210133 DOI: 10.1021/acs.orglett.1c01787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A study of [3 + 2] cycloaddition reactions of a bicyclic nitrone with various cyclopentenes has clarified the diastereomeric preferences as a function of the olefinic structure. It has also identified an important stereochemical difference between nitrones and the analogous azomethine ylides in [3 + 2] cycloaddition reactions.
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Affiliation(s)
- D Srinivas Reddy
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - G Sudhakar Reddy
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Adilson Beatriz
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - E J Corey
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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12
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Sandmeier T, Carreira EM. Enantioselective Synthesis of Cyclic Nitrones by Chemoselective Intramolecular Allylic Alkylation of Oximes. Angew Chem Int Ed Engl 2021; 60:9913-9918. [PMID: 33555650 DOI: 10.1002/anie.202100150] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/04/2021] [Indexed: 12/14/2022]
Abstract
The enantio- and chemoselective iridium-catalyzed N-allylation of oximes is described for the first time. Intramolecular kinetic resolution provides access to cyclic nitrones and enantioenriched aliphatic allylic alcohols. Salient features of this transformation are its ability to employ E/Z-isomeric mixtures of oxime starting materials convergently and high functional group tolerance. The implementation of N-allylation/1,3-dipolar cycloaddition reaction sequences furnishes tricyclic isoxazolidines in highly enantio- and diastereoselective fashion. The synthetic utility of the approach is demonstrated by the efficient, formal synthesis of the marine natural product (+)-halichlorine.
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Affiliation(s)
- Tobias Sandmeier
- Laboratorium für Organische Chemie, HCI H335, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Erick M Carreira
- Laboratorium für Organische Chemie, HCI H335, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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13
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Sandmeier T, Carreira EM. Enantioselective Synthesis of Cyclic Nitrones by Chemoselective Intramolecular Allylic Alkylation of Oximes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Tobias Sandmeier
- Laboratorium für Organische Chemie HCI H335 Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie HCI H335 Eidgenössische Technische Hochschule Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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14
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Qiu S, Cao T, Zhu S. Catalyst-free synthesis of isoxazolidine from nitrosoarene and haloalkyne via a 1,2-halo-migration/[3 + 2] cycloaddition cascade. Org Biomol Chem 2021; 19:3139-3143. [PMID: 33885568 DOI: 10.1039/d1ob00421b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented catalyst-free three-component reaction to synthesize isoxazolidine from easily accessible haloalkyne, nitrosoarene and maleimide was developed. This reaction was proposed to proceed via a 1,2-halo migration and [3 + 2] cycloaddition cascade, providing a new reaction pattern of alkyne and nitroso containing species wherein a new type of nitrone was generated. Besides, the reaction conditions were efficient and environmentally benign, enabling the formation of various bioactivity-related isoxazolidines.
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Affiliation(s)
- Shaotong Qiu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China.
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15
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Zou N, Qin X, Wang Z, Shi W, Mo D. Advances on the Synthesis and Application of α,β-Unsaturated Nitrones. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202109007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Xie L, Li Y, Dong S, Feng X, Liu X. Catalytic asymmetric formal [3+2] cycloaddition of isatogens with azlactones to construct indolin-3-one derivatives. Chem Commun (Camb) 2021; 57:239-242. [DOI: 10.1039/d0cc06418a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A number of enantioenriched indolin-3-one derivatives were readily obtained by chiral guanidine-catalyzed [3+2] cycloaddition of isatogens with azlactones.
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Affiliation(s)
- Lihua Xie
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Yi Li
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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17
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Liu Y, Liu J, Liu YY, Tang B, Lin H, Li Y, Zhang L. Synthesis of spirocyclic Δ 4-isoxazolines via [3 + 2] cycloaddition of indanone-derived ketonitrones with alkynes. RSC Adv 2021; 11:30415-30425. [PMID: 35480251 PMCID: PMC9041119 DOI: 10.1039/d1ra06063e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/05/2021] [Indexed: 11/30/2022] Open
Abstract
A [3 + 2] cycloaddition of indanone-derived nitrones and alkynes under mild conditions is developed, allowing facile synthesis of spirocyclicindenyl isoxazolines with structural diversity. The sequential protocol of generated in situ ketonitrone from unsaturated ketones and N-alkylhydroxylamines is also achieved successfully, affording the desired products in considerable yield with moderate to good diastereoselectivity. Moreover, the spirocyclic product can be conveniently transformed into indenyl-based allylic alcohol and enamide. A [3 + 2] cycloaddition of indanone-derived nitrones with alkynes under mild conditions has been developed. It is a highly efficient and straightforward method for the synthesis of diverse spirocyclicindenyl isoxazolines.![]()
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Affiliation(s)
- Yilin Liu
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China
- CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jiaxue Liu
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China
| | - Yan-Yun Liu
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China
| | - Boxiao Tang
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China
| | - Hongwei Lin
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China
| | - Yuanxiang Li
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China
| | - Lin Zhang
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Institute of Organic Synthesis, Huaihua University, Huaihua 418000, China
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18
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Mirabella S, Petrucci G, Faggi C, Matassini C, Cardona F, Goti A. Allyl Cyanate/Isocyanate Rearrangement in Glycals: Stereoselective Synthesis of 1-Amino and Diamino Sugar Derivatives. Org Lett 2020; 22:9041-9046. [PMID: 33147974 PMCID: PMC7735751 DOI: 10.1021/acs.orglett.0c03438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The [3,3]-sigmatropic allyl cyanate/isocyanate rearrangement of glycals in the presence of O-, N-, and C-nucleophiles afforded β-N-glucosyl and galactosyl carbamates, ureas, and amides in good yields. The unsaturated products were elaborated to N-glycosides by dihydroxylation, to 1,3-diaminosugars by tethered aminohydroxylation, or to 1,2-diaminosugars by iteration of the sigmatropic rearrangement. This metal-free methodology represents an excellent and general method for the stereoselective synthesis of N-glycosides and diamino sugars with complete transmission of stereochemical information.
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Affiliation(s)
- Stefania Mirabella
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Giulia Petrucci
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Cristina Faggi
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Camilla Matassini
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Francesca Cardona
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
| | - Andrea Goti
- Dipartimento di Chimica "Ugo Schiff", Università di Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino, FI, Italy
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19
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Xu JL, Tian H, Kang JH, Kang WX, Sun W, Sun R, Li YM, Sun M. Ag(I)-Catalyzed Addition of Cyclopropenones and Nitrones to Access Imides. Org Lett 2020; 22:6739-6743. [PMID: 32663031 DOI: 10.1021/acs.orglett.0c02099] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An unprecedented Ag-catalyzed addition reaction of cyclopropenones and nitrones to access imides was developed. Sequential C-C bond cleavage, N-O bond cleavage, and Mumm rearrangement were uncovered in this process. This protocol exhibited high efficiency, regioselectivity, good yields, and a broad tolerance of various functional groups.
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Affiliation(s)
- Jing-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Hu Tian
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Jia-Hao Kang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Wu-Xiang Kang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Wei Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Rui Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Ya-Min Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, 727 Jingming Nanlu, Kunming 650500, China
| | - Meng Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, China.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
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20
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Breugst M, Reissig H. The Huisgen Reaction: Milestones of the 1,3-Dipolar Cycloaddition. Angew Chem Int Ed Engl 2020; 59:12293-12307. [PMID: 32255543 PMCID: PMC7383714 DOI: 10.1002/anie.202003115] [Citation(s) in RCA: 243] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Indexed: 12/21/2022]
Abstract
The concept of 1,3-dipolar cycloadditions was presented by Rolf Huisgen 60 years ago. Previously unknown reactive intermediates, for example azomethine ylides, were introduced to organic chemistry and the (3+2) cycloadditions of 1,3-dipoles to multiple-bond systems (Huisgen reaction) developed into one of the most versatile synthetic methods in heterocyclic chemistry. In this Review, we present the history of this research area, highlight important older reports, and describe the evolution and further development of the concept. The most important mechanistic and synthetic results are discussed. Quantum-mechanical calculations support the concerted mechanism always favored by R. Huisgen; however, in extreme cases intermediates may be involved. The impact of 1,3-dipolar cycloadditions on the click chemistry concept of K. B. Sharpless will also be discussed.
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Affiliation(s)
- Martin Breugst
- Department für ChemieUniversität zu KölnGreinstrasse 450939KölnGermany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und BiochemieFreie Universität BerlinTakustrasse 314195BerlinGermany
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21
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Ranzenigo A, Mercurio C, Karrenbrock M, Cordero FM, Cardini G, Pagliai M, Brandi A. Regioselective Deuteration of a 3,4-Dialkoxypyrroline N
-Oxide and Synthesis of 8a- d
-Indolizidines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Ranzenigo
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Chiara Mercurio
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Maurice Karrenbrock
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Franca M. Cordero
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Gianni Cardini
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Marco Pagliai
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Alberto Brandi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
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22
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Breugst M, Reißig H. Die Huisgen‐Reaktion: Meilensteine der 1,3‐dipolaren Cycloaddition. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003115] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Martin Breugst
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Deutschland
| | - Hans‐Ulrich Reißig
- Institut für Chemie und Biochemie Freie Universität Berlin Takustr. 3 14195 Berlin Deutschland
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23
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Clemente F, Matassini C, Cardona F. Reductive Amination Routes in the Synthesis of Piperidine IminoSugars. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901840] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Francesca Clemente
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Camilla Matassini
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Francesca Cardona
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
- Associated with Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS); Università di Bari; 70125 Bari Italy
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24
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25
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Kouklovsky C. The Pivotal Role of N-O bonds in the Synthesis of Natural Products: A mini-review. VIETNAM JOURNAL OF CHEMISTRY 2020. [DOI: 10.1002/vjch.201900174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Univ. Paris-Sud, Université Paris-Saclay; F-91405 Orsay France
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26
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Said AI, El-Emary TI. Diastereoselective synthesis of atropisomeric pyrazolyl pyrrolo[3,4- d]isoxazolidines via pyrazolyl nitrone cycloaddition to facially divergent maleimides: intensive NMR and DFT studies. RSC Adv 2020; 10:845-850. [PMID: 35494462 PMCID: PMC9047523 DOI: 10.1039/c9ra10039c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 12/16/2019] [Indexed: 11/21/2022] Open
Abstract
A pyrazolyl nitrone (2) underwent 1,3-dipolar cycloadditions to afford some N-substituted maleimides (3a-o). An atropisomeric character was introduced into the formed cycloadducts by using maleimides that have a restricted rotation around the C-N bond. Also, facial selectivity of both endo and exo cycloaddition was observed where the major atropisomer was one that is formed by attacking the nitrone from the less hindered face of the dipolarophile. On the other hand, maleimides with free rotation around the C-N bond led to endo and exo cycloadducts without atropisomerism. The presence of atropisomerism in the formed cycloadducts was confirmed by extensive NMR studies and DFT calculations.
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Affiliation(s)
- Awad I Said
- Chemistry Department, Faculty of Science, Assiut University Assiut Egypt 71516 +20-1012991716
| | - Talaat I El-Emary
- Chemistry Department, Faculty of Science, Assiut University Assiut Egypt 71516 +20-1012991716
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27
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Ishizuka H, Adachi K, Odagi M, Nagasawa K. Synthesis of Isoxazolidines by Intramolecular Hydroamination of N-Alkoxyamides in the Presence of a Visible-Light Photoredox Catalyst. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hayate Ishizuka
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
| | - Kanna Adachi
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
| | - Minami Odagi
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
| | - Kazuo Nagasawa
- Department of Biotechnology and Life Science, Graduate School of Technology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei city, Tokyo 184-8588, Japan
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28
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Zhang M, Liu S, Li H, Guo Y, Li N, Guan M, Mehfooz H, Zhao J, Zhang Q. Copper‐Catalyzed Cope‐Type Hydroamination of Nonactivated Olefins toward Cyclic Nitrones: Scope, Mechanism, and Enantioselective Process Development. Chemistry 2019; 25:12620-12627. [DOI: 10.1002/chem.201902683] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/19/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Mengru Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Shuang Liu
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Hexin Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Yajing Guo
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Na Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Meihui Guan
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Haroon Mehfooz
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
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29
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Soleymani M, Kazemi Chegeni Z. A molecular electron density theory study on the [3+2] cycloaddition reaction of 5,5-dimethyl-1-pyrroline N-oxide with 2-cyclopentenone. J Mol Graph Model 2019; 92:256-266. [PMID: 31422198 DOI: 10.1016/j.jmgm.2019.08.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/11/2019] [Accepted: 08/11/2019] [Indexed: 10/26/2022]
Abstract
In the present work, the [3 + 2] cycloaddition reaction of 5,5-dimethyl-1-pyrroline N-oxide (Nit-5) and 2-cyclopentenone (CPN-6), experimentally reported by Tamura et al., was theoretically studied using the newly introduced molecular electron density theory (MEDT). Based on the experimental findings, this reaction takes place in an O3-C4 regio- and an exo-stereospecific fashion to give corresponding [3 + 2] exo cycloadduct as the sole product. The results of the potential energy surface analysis indicated that the experimentally reported product is more favorable both thermodynamically and kinetically relative to other possible adducts. In complete agreement with the experimental outcomes, the conceptual density functional theory reactivity indices explained the reactivity and regioselectivity of the reaction. Calculation of global electron density transfer of the energetically most preferred transition state indicated that the electron density fluxes from Nit-5 as a nucleophilic species toward CPN-6 as an electrophilic species. Analysis of the molecular electrostatic potential map of the most favorable transition state showed that approach of Nit-5 and CPN-6 locates the oppositely charged regions over each other leading to attractive forces between two reagents rationalizing the exo stereoselectivity predominance. The molecular mechanism of the reactions was specified using electron localization function analysis over some relevant points along the intrinsic reaction coordinate profile of the most favorable transition state and the results indicated that this zwitterionic-type [3 + 2] cycloaddition reaction proceeds through a two-stage one-step mechanism. In fact, while the O3-C4 single bond is initialy formed between two fragments through donation of some electron density from the O3 oxygen lone electron-pairs of Nit-5 toward the C4 carbon atom of CPN-6, the delayed C1-C5 single bond begins to form via C1- to -C5 coupling of pseudodiracal centers created on theses atoms over the course of reaction.
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Affiliation(s)
- Mousa Soleymani
- Chemistry Department, Faculty of Science, Ayatollah Boroujerdi University, Boroujerd, Iran.
| | - Zeinab Kazemi Chegeni
- Chemistry Department, Faculty of Science, Ayatollah Boroujerdi University, Boroujerd, Iran
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30
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Gracia-Vitoria J, Osante I, Cativiela C, Tejero T, Merino P. Experimental and Computational Studies on the 1,3-Dipolar Cycloaddition between Enantiomerically Pure 2,3-Dihydrothiazoles and Nitrones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900667] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jaime Gracia-Vitoria
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Iñaki Osante
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Carlos Cativiela
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Tomás Tejero
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Pedro Merino
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI); Universidad de Zaragoza; 50009 Zaragoza Spain
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31
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Malatinský T, Otočková B, Dikošová L, Fischer R. A Convenient Synthetic Route towards 3,5‐Bis(hydroxymethyl)pyrrolizidines: Stereoselective Synthesis of Unnatural (–)‐Hyacinthacine B 2. ChemistrySelect 2019. [DOI: 10.1002/slct.201900529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tomáš Malatinský
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Barbora Otočková
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Lívia Dikošová
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Róbert Fischer
- Institute of Organic Chemistry, Catalysis and PetrochemistrySlovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
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32
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Abstract
Nitrones are important compounds and are highly useful in many aspects. The first part describes the methods for synthesis of nitrones, which are useful and environmentally friendly. Catalytic oxidations, condensations, and other useful reactions are described. The nitrones thus obtained are key intermediates for the synthesis of biologically important nitrogen compounds. The second part describes the fundamental transformations of nitrones, which will provide the strategies and means for the construction of nitrogen compounds. The reactions with nucleophiles or radicals, C-H functionalization, and various addition reactions are described. The last reactions are particularly important for highly selective carbon-carbon bond formations. 1,3-Dipolar cycloaddition reactions are excluded because the size of the review is limited and excellent reviews have been published in Chemical Reviews.
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Affiliation(s)
- Shun-Ichi Murahashi
- Department of Chemistry, Graduate School of Engineering Science , Osaka University , 1-3, Machikaneyama , Toyonaka , Osaka 560-8531 , Japan
| | - Yasushi Imada
- Department of Applied Chemistry , Tokushima University , 2-1, Minamijosanjima , Tokushima 770-8506 , Japan
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33
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Messire G, Massicot F, Vallée A, Vasse JL, Behr JB. Aza-Henry Reaction with Nitrones, an Under-Explored Transformation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801823] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Gatien Messire
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims; CNRS, UMR 7312, FR CNRS 3417; 51687 Reims Cedex 2 France
| | - Fabien Massicot
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims; CNRS, UMR 7312, FR CNRS 3417; 51687 Reims Cedex 2 France
| | - Alexis Vallée
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims; CNRS, UMR 7312, FR CNRS 3417; 51687 Reims Cedex 2 France
| | - Jean-Luc Vasse
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims; CNRS, UMR 7312, FR CNRS 3417; 51687 Reims Cedex 2 France
| | - Jean-Bernard Behr
- Université de Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims; CNRS, UMR 7312, FR CNRS 3417; 51687 Reims Cedex 2 France
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34
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Yildirim M, Suleiman G. A practical access to new pyrrolizine carboxylates via KHMDS-catalyzed carbocyclizations. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2018.1563796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Muhammet Yildirim
- Department of Chemistry, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Garba Suleiman
- Department of Chemistry, Yobe State University, Damaturu, Yobe State, Nigeria
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35
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Aliphatic nitro compounds chemistry: oximes–nitrones tunable production through directed tandem synthesis. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-018-2326-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Massicot F, Messire G, Vallée A, Vasse JL, Py S, Behr JB. Regiospecific formation of sugar-derived ketonitrone towards unconventional C-branched pyrrolizidines and indolizidines. Org Biomol Chem 2019; 17:7066-7077. [DOI: 10.1039/c9ob01419e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of unprecedented branched pyrrolizidines and indolizidines was accomplished via nitrone chemistry.
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Affiliation(s)
| | - Gatien Messire
- Univ. Reims Champagne-Ardenne
- ICMR
- 51687 Reims Cedex 2
- France
| | - Alexis Vallée
- Univ. Reims Champagne-Ardenne
- ICMR
- 51687 Reims Cedex 2
- France
| | - Jean-Luc Vasse
- Univ. Reims Champagne-Ardenne
- ICMR
- 51687 Reims Cedex 2
- France
| | - Sandrine Py
- Univ. Grenoble Alpes
- DCM
- F-38000 Grenoble
- France
- CNRS
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37
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Insights into the enzymatic formation, chemical features, and biological role of the flavin-N5-oxide. Curr Opin Chem Biol 2018; 47:47-53. [DOI: 10.1016/j.cbpa.2018.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/31/2018] [Accepted: 08/07/2018] [Indexed: 11/22/2022]
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38
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Malatinský T, Puhová Z, Babjak M, Doháňošová J, Moncol J, Marchalín Š, Fischer R. Influence of the side chain protecting group on the stereoselectivity of the 1,3-dipolar cycloaddition of d-talo-configured nitrones. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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39
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Synthesis and glycosidase inhibition potency of all- trans substituted 1- C -perfluoroalkyl iminosugars. Carbohydr Res 2018; 464:2-7. [DOI: 10.1016/j.carres.2018.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/09/2018] [Accepted: 05/09/2018] [Indexed: 01/28/2023]
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40
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Sağirli A, Dürüst Y. Regioselective synthesis of some isoxazolines and isoxazolidines bearing caprolactam moiety. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1448934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Akın Sağirli
- Department of Chemistry, Abant İzzet Baysal University, Bolu, Turkey
| | - Yaşar Dürüst
- Department of Chemistry, Abant İzzet Baysal University, Bolu, Turkey
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41
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Lieou Kui E, Kanazawa A, Behr JB, Py S. Ring-Junction-Substituted Polyhydroxylated Pyrrolizidines and Indolizidines from Ketonitrone Cycloadditions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Evelyn Lieou Kui
- Univ. Grenoble Alpes; CNRS; Département de Chimie Moléculaire (DCM); 38000 Grenoble France
| | - Alice Kanazawa
- Univ. Grenoble Alpes; CNRS; Département de Chimie Moléculaire (DCM); 38000 Grenoble France
| | - Jean-Bernard Behr
- Univ. Reims Champagne-Ardenne; Institut de Chimie Moléculaire de Reims (ICMR); CNRS UMR 7312; 51687 Reims CEDEX 2 France
| | - Sandrine Py
- Univ. Grenoble Alpes; CNRS; Département de Chimie Moléculaire (DCM); 38000 Grenoble France
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42
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Laun J, Marchal W, Trouillet V, Welle A, Hardy A, Van Bael MK, Barner-Kowollik C, Junkers T. Reversible Surface Engineering via Nitrone-Mediated Radical Coupling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3244-3255. [PMID: 29457981 DOI: 10.1021/acs.langmuir.7b03167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Efficient and simple polymer conjugation reactions are critical for introducing functionalities on surfaces. For polymer surface grafting, postpolymerization modifications are often required, which can impose a significant synthetic hurdle. Here, we report two strategies that allow for reversible surface engineering via nitrone-mediated radical coupling (NMRC). Macroradicals stemming from the activation of polymers generated by copper-mediated radical polymerization are grafted via radical trapping with a surface-immobilized nitrone or a solution-borne nitrone. Since the product of NMRC coupling features an alkoxyamine linker, the grafting reactions can be reversed or chain insertions can be performed via nitroxide-mediated polymerization (NMP). Poly( n-butyl acrylate) ( Mn = 1570 g·mol-1, D̵ = 1.12) with a bromine terminus was reversibly grafted to planar silicon substrates or silica nanoparticles as successfully evidenced via X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry, and grazing angle attenuated total reflection Fourier-transform infrared spectroscopy (GAATR-FTIR). NMP chain insertions of styrene are evidenced via GAATR-FTIR. On silica nanoparticles, an NMRC grafting density of close to 0.21 chains per nm2 was determined by dynamic light scattering and thermogravimetric analysis. Concomitantly, a simple way to decorate particles with nitroxide radicals with precise control over the radical concentration is introduced. Silica microparticles and zinc oxide, barium titanate, and silicon nanoparticles were successfully functionalized.
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Affiliation(s)
| | | | | | | | | | | | - Christopher Barner-Kowollik
- School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology (QUT) , 2 George Street , QLD 4000 , Brisbane , Australia
- Macromolecular Architectures, Institut für Technische Chemie und Polymerchemie , Karlsruhe Institute of Technology (KIT) , Engesserstraße 18 , 76128 Karlsruhe , Germany
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43
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Synthesis of the diarylindolizidine alkaloid (+)-Fistulopsine B: Application of an organocatalytic Michael addition reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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44
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Cobalt(II) Porphyrin Catalyzed Cascade Reaction of Pyrrolyl Ketones for Construction of Polysubstituted Pyrrolizidines and Pyrrolizines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701472] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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45
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Jia ZJ, Takayama H, Futamura Y, Aono H, Bauer JO, Strohmann C, Antonchick AP, Osada H, Waldmann H. Catalytic Enantioselective Synthesis of a Pyrrolizidine–Alkaloid-Inspired Compound Collection with Antiplasmodial Activity. J Org Chem 2018; 83:7033-7041. [DOI: 10.1021/acs.joc.7b03202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhi-Jun Jia
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Chemical Biology, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | - Hiroshi Takayama
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
| | - Yushi Futamura
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science,2-1 Hirosawa,Wako-shi, Saitama 351-0198, Japan
| | - Harumi Aono
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science,2-1 Hirosawa,Wako-shi, Saitama 351-0198, Japan
| | - Jonathan O. Bauer
- Inorganic Chemistry, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Carsten Strohmann
- Inorganic Chemistry, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany
| | - Andrey P. Antonchick
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Chemical Biology, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | - Hiroyuki Osada
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science,2-1 Hirosawa,Wako-shi, Saitama 351-0198, Japan
| | - Herbert Waldmann
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
- Chemical Biology, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
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46
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Ray SK, Biswas RG, Suneja A, Sadhu MM, Singh VK. (R)-DM-SEGPHOS-Ag(I)-Catalyzed Enantioselective Synthesis of Pyrrolidines and Pyrrolizidines via (1,3)- and Double (1,3)-Dipolar Cycloaddition Reactions. J Org Chem 2018; 83:2293-2308. [PMID: 29364672 DOI: 10.1021/acs.joc.7b03185] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An efficient diastereo- and enantioselective route to access a wide range of highly substituted pyrrolidine and pyrrolizidine derivatives has been described via (1,3)- and double (1,3)-dipolar cycloaddition reactions catalyzed by the (R)-DM-SEGPHOS-Ag(I) complex. The reactions proceed smoothly at ambient temperature, affording a variety of pyrrolidines and pyrrolizidines in high yields (up to 93%) with up to 99:1 dr and excellent enantioselectivities (up to 98% ee) without any additives. The newly synthesized pyrrolidine and pyrrolizidine derivatives contain four and seven contiguous stereogenic centers, respectively. Moreover, the synthetic utility of enantioenriched products has been demonstrated by transforming them into various synthetically useful advanced intermediates.
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Affiliation(s)
- Sumit K Ray
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal, Madhya Pradesh 462 066, India
| | - Rayhan G Biswas
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal, Madhya Pradesh 462 066, India
| | - Arun Suneja
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal, Madhya Pradesh 462 066, India
| | - Milon M Sadhu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal, Madhya Pradesh 462 066, India
| | - Vinod K Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal, Madhya Pradesh 462 066, India.,Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur, Uttar Pradesh 208 016, India
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47
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Domingo LR, Ríos-Gutiérrez M, Pérez P. A Molecular Electron Density Theory Study of the Reactivity and Selectivities in [3 + 2] Cycloaddition Reactions of C,N-Dialkyl Nitrones with Ethylene Derivatives. J Org Chem 2018; 83:2182-2197. [PMID: 29350934 DOI: 10.1021/acs.joc.7b03093] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The zw-type [3 + 2] cycloaddition (32CA) reactions of C,N-dialkyl nitrones with a series of ethylenes of increased electrophilic character have been studied within the Molecular Electron Density Theory (MEDT) at the MPWB1K/6-311G(d,p) computational level. Both, reactivity and selectivities are rationalized depending on the polar character of the reaction. Due to the strong nucleophilic character of C,N-dialkyl nitrones, the corresponding zw-type 32CA reactions are accelerated with the increased electrophilic character of the ethylene, which also plays a crucial role in the reaction mechanism, thus determining the regio- and stereoselectivities experimentally observed. While, in the 32CA reactions with nucleophilic ethylenes, the reaction begins with the formation of the C-C single bond, determining the ortho regioselectivity, in the 32CA reactions with strong electrophilic ethylenes, the reaction begins with the formation of the C-O single bond involving the β-conjugated carbon of the ethylene, determining the meta regioselectivity. The present MEDT study also provides an explanation for the unexpected ortho regioselectivity experimentally found in the 32CA reactions involving weak electrophilic ethylenes such as ethyl acrylate and acrylonitrile.
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Affiliation(s)
- Luis R Domingo
- Department of Organic Chemistry, University of Valencia , Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain
| | - Mar Ríos-Gutiérrez
- Department of Organic Chemistry, University of Valencia , Dr. Moliner 50, E-46100 Burjassot, Valencia, Spain
| | - Patricia Pérez
- Universidad Andres Bello , Facultad de Ciencias Exactas, Departamento de Ciencias Químicas, Av. República 498, 8370146, Santiago, Chile
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48
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Wang D, Yan Z, Xie Q, Zhang R, Lin S, Wang Y. Three-component difunctionalization of alkenes leading to β-acetamido sulfides and β-acetoxy sulfides. Org Biomol Chem 2018; 15:1998-2002. [PMID: 28181596 DOI: 10.1039/c7ob00110j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel method for the synthesis of β-acetamido sulfides via NBS-mediated aminosulfenylation of alkenes with thiophenols and nitriles under metal-free conditions has been described. And β-acetamido sulfides were also synthesized with 1-(arylthio)pyrrolidine-2,5-diones as substrates and HBr as an additive. On the other hand, iodine-catalyzed 1,2-acetoxysulfenylation of alkenes by using (diacetoxyiodo)benzene as an oxygen source to synthesise various β-acetoxy sulfides was described as well.
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Affiliation(s)
- Dingyi Wang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China.
| | - Zhaohua Yan
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China.
| | - Qihuang Xie
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China.
| | - Rongxing Zhang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China.
| | - Sen Lin
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China.
| | - Yuanxing Wang
- School of Food Science & Technology, Nanchang University, Nanchang, Jiangxi 330031, China
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49
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Yi CB, She ZY, Cheng YF, Qu J. Redox-Neutral α-C–H Functionalization of Pyrrolidin-3-ol. Org Lett 2018; 20:668-671. [DOI: 10.1021/acs.orglett.7b03807] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Cheng-Bo Yi
- The State Key Laboratory
and Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhi-Ying She
- The State Key Laboratory
and Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yong-Feng Cheng
- The State Key Laboratory
and Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jin Qu
- The State Key Laboratory
and Institute of Elemento-organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
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50
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Xue F, Lu H, He L, Li W, Zhang D, Liu XY, Qin Y. Formal Total Syntheses of (−)- and (+)-Actinophyllic Acid. J Org Chem 2018; 83:754-764. [PMID: 29283259 DOI: 10.1021/acs.joc.7b02747] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fei Xue
- Key Laboratory of Drug Targeting and
Drug Delivery Systems of the Ministry of Education, West China School
of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Huifang Lu
- Key Laboratory of Drug Targeting and
Drug Delivery Systems of the Ministry of Education, West China School
of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Liping He
- Key Laboratory of Drug Targeting and
Drug Delivery Systems of the Ministry of Education, West China School
of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Wenfei Li
- Key Laboratory of Drug Targeting and
Drug Delivery Systems of the Ministry of Education, West China School
of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Dan Zhang
- Key Laboratory of Drug Targeting and
Drug Delivery Systems of the Ministry of Education, West China School
of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and
Drug Delivery Systems of the Ministry of Education, West China School
of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Yong Qin
- Key Laboratory of Drug Targeting and
Drug Delivery Systems of the Ministry of Education, West China School
of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
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