1
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Xie T, Huang J, Li J, Peng L, Song J, Guo C. Cu-catalyzed asymmetric regiodivergent electrosynthesis and its application in the enantioselective total synthesis of (-)-fumimycin. Nat Commun 2023; 14:6749. [PMID: 37875470 PMCID: PMC10598217 DOI: 10.1038/s41467-023-42603-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 10/16/2023] [Indexed: 10/26/2023] Open
Abstract
Quaternary amino acids are one of the essential building blocks and precursors of medicinally important compounds. Various synthetic strategies towards their synthesis have been reported. On the other hand, developing core-structure-oriented cross-dehydrogenative coupling (CDC) reactions, is a largely unsolved problem. Herein, we describe a copper-catalyzed regiodivergent electrochemical CDC reaction of Schiff bases and commercially available hydroquinones to obtain three classes of chiral quaternary amino acid derivatives for the efficient assembly of complex scaffolds with excellent stereocontrol. The electrochemical anodic oxidation process with slow releasing of quinones serves as an internal syringe pump and provides high levels of reaction efficiency and enantiomeric control. The utility of this strategy is highlighted through the synthetic utility in the asymmetric total synthesis of (-)-fumimycin.
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Affiliation(s)
- Tian Xie
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Jianming Huang
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei, 230601, China
| | - Juan Li
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei, 230601, China
| | - Lingzi Peng
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Jin Song
- Institutes of Physical Science and Information Technology, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei, 230601, China
| | - Chang Guo
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China.
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2
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Abstract
In recent years, Dakin oxidation has evolved primarily around the conversion of ortho- and para-hydroxy benzaldehydes and acetophenones to dihydric phenols, which are found in nature and complex organic materials.
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Affiliation(s)
- Porag Bora
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur-784028, India
| | - Bondana Bora
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur-784028, India
| | - Utpal Bora
- Department of Chemical Sciences, Tezpur University, Napaam, Sonitpur-784028, India
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3
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Retini M, Bartolucci S, Bartoccini F, Mari M, Piersanti G. Concise and Convergent Enantioselective Total Syntheses of (+)- and (-)-Fumimycin. J Org Chem 2019; 84:12221-12227. [PMID: 31476858 DOI: 10.1021/acs.joc.9b02020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The concise and convergent total syntheses of (+)- and (-)-Fumimycin have been achieved by taking advantage of strategies for the asymmetric aza-Friedel-Crafts reaction of a highly substituted hydroquinone and N-fumaryl ketimine generated from the corresponding dehydroalanine. The enantiomerically pure natural product and its enantiomer were prepared in seven steps and 22% overall yield by employing both enantiomers of a BINOL-derived chiral phosphoric acid (CPA) catalyst.
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Affiliation(s)
- Michele Retini
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Silvia Bartolucci
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Michele Mari
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
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4
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Zaghouani M, Bögeholz LAK, Mercier E, Wintermeyer W, Roche SP. Total synthesis of (±)-fumimycin and analogues for biological evaluation as peptide deformylase inhibitors. Tetrahedron 2019; 75:3216-3230. [PMID: 31555018 PMCID: PMC6759494 DOI: 10.1016/j.tet.2019.03.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A concise 7-step total synthesis of (±)-fumimycin in 11.6 % overall yield is reported. An acid-catalyzed intramolecular aza-Friedel-Crafts cyclization was developed to construct the benzofuranone skeleton of the natural product bearing an α,α-disubstituted amino acid moiety in a single step. Regioselective chlorination followed by a Suzuki-Miyaura cross-coupling rapidly enabled the preparation of a library of analogues which were evaluated against peptide deformylase for antibacterial activity.
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Affiliation(s)
- Mehdi Zaghouani
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, USA
| | - Lena A. K. Bögeholz
- Department of Physical Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany
| | - Evan Mercier
- Department of Physical Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany
| | - Wolfgang Wintermeyer
- Department of Physical Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany
| | - Stéphane P. Roche
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, USA
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5
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Zhou Z, Hu Y, Wang B, He X, Ren G, Feng L. A Concise Synthesis of (±)-Methoxyfumimycin Ethyl Ester. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/174751914x14011142030158] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Zhiwang Zhou
- School of Pharmaceutical Sciences, Nanchang University, Nanchang, 330006, Jiangxi, P.R. China
| | - Yu Hu
- Department of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, P.R. China
| | - Bin Wang
- School of Pharmaceutical Sciences, Nanchang University, Nanchang, 330006, Jiangxi, P.R. China
| | - Xiaoru He
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, Ministry of Education, Nanchang 330004, Jiangxi, P.R. China
| | - Gang Ren
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of Traditional Chinese Medicine, Ministry of Education, Nanchang 330004, Jiangxi, P.R. China
| | - Lihua Feng
- School of Pharmaceutical Sciences, Nanchang University, Nanchang, 330006, Jiangxi, P.R. China
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6
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Bartoccini F, Mari M, Retini M, Bartolucci S, Piersanti G. Organocatalytic Aza-Friedel-Crafts/Lactonization Domino Reaction of Naphthols and Phenols with 2-Acetamidoacrylate to Naphtho- and Benzofuranones Bearing a Quaternary Center at the C3 Position. J Org Chem 2018; 83:12275-12283. [PMID: 30191715 DOI: 10.1021/acs.joc.8b01774] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
N-Acetyl ketimine generated from methyl 2-acetamidoacrylate was explored to develop an unprecedented domino aza-Friedel-Crafts/lactonization reaction with naphthols and phenols (including 5-hydroxyindoles). This novel method requires a catalyst loading of only 5 mol % of a phosphoric acid catalyst and provides a new series of 3-NHAc-naphtho- and benzofuranone derivatives bearing tetra-substituted stereogenic centers in moderate-to-good yields. The enantioselective variant using BINOL-derived phosphoric acids was also explored with 1-naphthol, providing the desired product with moderate enantioselectivities (up to 99:1 following recrystallization).
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Affiliation(s)
- Francesca Bartoccini
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Michele Mari
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Michele Retini
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Silvia Bartolucci
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
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7
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Liu Y, Zhou C, Xiong M, Jiang J, Wang J. Asymmetric Rh(I)-Catalyzed Functionalization of the 3-C(sp3)–H Bond of Benzofuranones with α-Diazoesters. Org Lett 2018; 20:5889-5893. [PMID: 30192557 DOI: 10.1021/acs.orglett.8b02555] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yuanhong Liu
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Chao Zhou
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Miao Xiong
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Jijun Jiang
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Jun Wang
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
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8
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Synthesis of Benzofuran-2-One Derivatives and Evaluation of Their Antioxidant Capacity by Comparing DPPH Assay and Cyclic Voltammetry. Molecules 2018; 23:molecules23040710. [PMID: 29561784 PMCID: PMC6017620 DOI: 10.3390/molecules23040710] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 03/17/2018] [Accepted: 03/19/2018] [Indexed: 02/06/2023] Open
Abstract
The present work aimed to synthesise promising antioxidant compounds as a valuable alternative to the currently expensive and easily degradable molecules that are employed as stabilizers in industrial preparation. Taking into account our experience concerning domino Friedel-Crafts/lactonization reactions, we successfully improved and extended the previously reported methodology toward the synthesis of 3,3-disubstituted-3H-benzofuran-2-one derivatives 9-20 starting from polyphenols 1-6 as substrates and either diethylketomalonate (7) or 3,3,3-trifluoromethyl pyruvate (8) as electrophilic counterpart. The antioxidant capacity of the most stable compounds (9-11 and 15-20) was evaluated by both DPPH assay and Cyclic Voltammetry analyses performed in alcoholic media (methanol) as well as in aprotic solvent (acetonitrile). By comparing the recorded experimental data, a remarkable activity can be attributed to few of the tested lactones.
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9
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Smarun AV, Shahreel W, Pramono S, Koo SY, Tan LY, Ganguly R, Vidović D. Influence of increasing steric demand on isomerization of terminal alkenes catalyzed by bifunctional ruthenium complexes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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11
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First asymmetric organocatalyzed domino Friedel–Crafts/lactonization reaction in the enantioselective synthesis of the GABAB receptor modulator (S)-BHFF. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.01.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Ren H, Wang P, Wang L, Tang Y. Catalytic Asymmetric Synthesis of 3-Hydroxy-3-trifluoromethyl Benzofuranones via Tandem Friedel–Crafts/Lactonization Reaction. Org Lett 2015; 17:4886-9. [DOI: 10.1021/acs.orglett.5b02440] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai Ren
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
| | - Pan Wang
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
| | - Lijia Wang
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
| | - Yong Tang
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
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13
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Miao P, Wang H, Liu L, Chang W, Li J. Palladium-Catalyzed Highly Chemoselective Cascade Coupling-Cyclization of Allenol Derivatives and Aryl Halides for the Construction of Dihydrobenzofuranols or Chromanols and Indolinols. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500263] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pingping Miao
- The State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Weijin Road 94# Tianjin 300071 China
| | - Hongkai Wang
- The State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Weijin Road 94# Tianjin 300071 China
| | - Lingyan Liu
- The State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Weijin Road 94# Tianjin 300071 China
| | - Weixing Chang
- The State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Weijin Road 94# Tianjin 300071 China
| | - Jing Li
- The State Key Laboratory of Elemento-Organic Chemistry; Nankai University; Weijin Road 94# Tianjin 300071 China
- the Synergetic Innovation Center of Chemical Science and Engineering; Tianjin 300071 China
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14
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Chen X, Martinez JS, Mohr JT. Regiodivergent Halogenation of Vinylogous Esters: One-Pot, Transition-Metal-Free Access to Differentiated Haloresorcinols. Org Lett 2015; 17:378-81. [PMID: 25564873 DOI: 10.1021/ol503561x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiaohong Chen
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - Jenny S. Martinez
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - Justin T. Mohr
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
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15
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Hoffmann J, Kazmaier U. A straightforward approach towards cyclic photoactivatable tubulysin derivatives. Angew Chem Int Ed Engl 2014; 53:11356-60. [PMID: 25196233 DOI: 10.1002/anie.201405650] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/28/2014] [Indexed: 01/17/2023]
Abstract
The development of a new photolabile protecting group containing an additional allyl functionality allows the synthesis of cyclic photoactivatable natural products. Cyclization occurs between the allyl moiety in the protecting group and a second double bond in the target molecule by means of ring-closing metathesis. Cyclization should increase the metabolic stability towards proteases. On the other hand, the conformational change should cause diminished biological activity. As illustrated for tubulysin derivatives, cyclic and photoactivatable drug candidates can easily be obtained in only two steps from simple building blocks through Ugi reaction and ring-closing metathesis. The photolabile protecting group is introduced by means of the isocyanide component during the Ugi reaction.
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Affiliation(s)
- Judith Hoffmann
- Institute for Organic Chemistry, Saarland University, P.O. Box 151150, 66041 Saarbrücken (Germany) http://www.uni-saarland.de/fak8/kazmaier
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Hoffmann J, Kazmaier U. Ein einfacher Zugang zu cyclischen photoaktivierbaren Tubulysin-Derivaten. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405650] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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Xiong Y, Mei H, Wu L, Han J, Pan Y, Li G. Synthesis of chiral N-phosphinyl α-imino esters and their application in asymmetric synthesis of α-amino esters by reduction. Beilstein J Org Chem 2014; 10:653-9. [PMID: 24778716 PMCID: PMC3999852 DOI: 10.3762/bjoc.10.57] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 02/14/2014] [Indexed: 11/25/2022] Open
Abstract
A variety of chiral N-phosphinyl α-imino esters have been synthesized for the first time from ketoesters and phosphinylamide, which were then reduced by L-selectride to give the corresponding N-phosphinyl-protected α-amino esters. The reduction proceeded very well with excellent chemical yields (88–98%) as well as high diastereoselectivities (96:4 to 99:1). Some of these products could be obtained without column chromatography and recrystallization. The chiral phosphinyl auxiliary could be easily cleaved under acidic conditions.
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Affiliation(s)
- Yiwen Xiong
- School of Chemistry and Chemical Engineering, State of Key Laboratory of Coordination, Nanjing University, Nanjing, 210093, China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering, State of Key Laboratory of Coordination, Nanjing University, Nanjing, 210093, China ; Institute for Chemistry & BioMedical Sciences, Nanjing University, Nanjing, 210093, China
| | - Lingmin Wu
- School of Chemistry and Chemical Engineering, State of Key Laboratory of Coordination, Nanjing University, Nanjing, 210093, China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering, State of Key Laboratory of Coordination, Nanjing University, Nanjing, 210093, China ; Institute for Chemistry & BioMedical Sciences, Nanjing University, Nanjing, 210093, China ; High-Tech Research Institute of Nanjing University, Changzhou, 213164, China
| | - Yi Pan
- School of Chemistry and Chemical Engineering, State of Key Laboratory of Coordination, Nanjing University, Nanjing, 210093, China
| | - Guigen Li
- Institute for Chemistry & BioMedical Sciences, Nanjing University, Nanjing, 210093, China ; Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas, 79409-1061, USA
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18
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Suzuki C, Morimoto K, Hirano K, Satoh T, Miura M. Ruthenium‐ and Rhodium‐Catalyzed Dehydrogenative
ortho
‐Alkenylation of Benzylamines
via
Free Amino Group Directed CH Bond Cleavage. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400088] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chiharu Suzuki
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
| | - Keisuke Morimoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
| | - Koji Hirano
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
| | - Tetsuya Satoh
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
- JST, ACT‐C, 4‐1‐8 Honcho, Kawaguchi, Saitama 332‐0012, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565‐0871, Japan, Fax: (+81)‐6‐6879‐7362
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20
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Vetica F, Pelosi A, Gambacorta A, Loreto MA, Miceli M, Gasperi T. Catalytic Friedel-Crafts/Lactonization Domino Reaction: Facile Access to 3-Hydroxybenzofuran-2-one Scaffold. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301686] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Simonetti SO, Larghi EL, Kaufman TS. A facile and convenient sequential homobimetallic catalytic approach towards β-methylstyrenes. A one-pot Stille cross-coupling/isomerization strategy. Org Biomol Chem 2014; 12:3735-43. [DOI: 10.1039/c4ob00604f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A one-pot approach towards β-methylstyrenes is reported. The transformation involves a Stille cross-coupling reaction of aryl halides with allyltributylstannane, followed by an in situ Pd-catalyzed double bond conjugative migration.
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Affiliation(s)
- Sebastián O. Simonetti
- Instituto de Química Rosario (IQUIR
- CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario, Argentina
| | - Enrique L. Larghi
- Instituto de Química Rosario (IQUIR
- CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario, Argentina
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR
- CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario, Argentina
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22
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Iwabuchi Y, Shibuta T, Sato S, Shibuya M, Kanoh N, Taniguchi T, Monde K. Enantioselective Intramolecular Aza-Spiroannulation onto Benzofurans Using Chiral Rhodium Catalysis. HETEROCYCLES 2014. [DOI: 10.3987/com-14-12941] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Wang W, Zheng Z, Wang X, Chen J. Generation and Conjugate Additions ofo-Quinone Methides Under Mild Base Conditions: Rapid Synthesis ofN-Substituted Aryl Glycine Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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25
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26
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Zhou ZW, Li WC, Hu Y, Wang B, Ren G, Feng LH. Synthesis of the intermediate for fumimycin: a natural peptide deformylase inhibitor. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0817-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Chen S, Hossain MS, Foss FW. Organocatalytic Dakin Oxidation by Nucleophilic Flavin Catalysts. Org Lett 2012; 14:2806-9. [DOI: 10.1021/ol3010326] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shuai Chen
- The University of Texas at Arlington, Department of Chemistry and Biochemistry, Arlington, Texas 76019-0065, United States
| | - Mohammad S. Hossain
- The University of Texas at Arlington, Department of Chemistry and Biochemistry, Arlington, Texas 76019-0065, United States
| | - Frank W. Foss
- The University of Texas at Arlington, Department of Chemistry and Biochemistry, Arlington, Texas 76019-0065, United States
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28
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Gross PJ, Furche F, Nieger M, Bräse S. Asymmetric total synthesis of (+)-fumimycin via 1,2-addition to ketimines. Chem Commun (Camb) 2010; 46:9215-7. [PMID: 21031188 DOI: 10.1039/c0cc03399e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first asymmetric total synthesis of fumimycin was accomplished. As a key step, a 1,2-addition of methyl Grignard reagents to ketimines with quinine as additive was employed. The absolute configuration of (+)-fumimycin was determined by CD-spectroscopy combined with time-dependent density functional calculations.
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Affiliation(s)
- Patrick J Gross
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
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