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Bencivenni G, Moccia M, Ravelli A, Gillick-Healy MW, Kelly BG, Adamo MFA. First enantioselective synthesis of gingesulfonic acids and unequivocal determination of their absolute stereochemistry. Org Biomol Chem 2020; 18:1091-1094. [PMID: 31994578 DOI: 10.1039/c9ob02662b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the first organocatalysed enantioselective synthesis of gingesulfonic acids and shogasulfonic acids via a mild and convenient aminothiourea-catalysed conjugate addition of bisulfite to the olefin moiety of α,β-unsaturated carbonyls-a technology previously reported by us. A series of optically active naturally occurring sulfonic acids are prepared in their natural and unnatural configurations, and their absolute configurations are unequivocally confirmed by single crystal X-ray diffractometry.
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Affiliation(s)
- Grazia Bencivenni
- Centre for Synthesis and Chemical Biology (CSCB), Department of Chemistry, The Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Dublin, Ireland.
| | - Maria Moccia
- Consiglio Nazionale delle Ricerche (CNR)-Institute of Crystallography, Via G. Amendola 122/O, 70126 Bari, Italy
| | - Andrea Ravelli
- Centre for Synthesis and Chemical Biology (CSCB), Department of Chemistry, The Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Dublin, Ireland.
| | - Malachi W Gillick-Healy
- Centre for Synthesis and Chemical Biology (CSCB), Department of Chemistry, The Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Dublin, Ireland.
| | - Brian G Kelly
- Kelada Pharmachem Ltd. A1.01, Science Centre South, Belfield, Dublin 4, Ireland
| | - Mauro F A Adamo
- Centre for Synthesis and Chemical Biology (CSCB), Department of Chemistry, The Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Dublin, Ireland.
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Song QW, Zhou ZH, Yin H, He LN. Silver(I)-Catalyzed Synthesis of β-Oxopropylcarbamates from Propargylic Alcohols and CO2 Surrogate: A Gas-Free Process. CHEMSUSCHEM 2015; 8:3967-3972. [PMID: 26542321 DOI: 10.1002/cssc.201501176] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Indexed: 06/05/2023]
Abstract
The utilization of carbon dioxide poses major challenges owing to its high thermodynamic stability and kinetic inertness. To circumvent these problems, a simple reaction system is reported comprising ammonium carbamates as carbon dioxide surrogates, propargylic alcohols, and a silver(I) catalyst, for the effective conversion of a wide range of alcohols and secondary amines into the corresponding β-oxopropylcarbamates. A key feature of this strategy includes quantitative use of a carbon resource with high product yields under gas-free and mild reaction conditions. Notably, this catalytic protocol also works well for the carboxylative cyclization of propargylic amines and carbon dioxide surrogates to afford 2-oxazolidinones.
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Affiliation(s)
- Qing-Wen Song
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, PR China
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, PR China
| | - Zhi-Hua Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, PR China
| | - Hong Yin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, PR China
| | - Liang-Nian He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, PR China.
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Pérez-Areales FJ, Di Pietro O, Espargaró A, Vallverdú-Queralt A, Galdeano C, Ragusa IM, Viayna E, Guillou C, Clos MV, Pérez B, Sabaté R, Lamuela-Raventós RM, Luque FJ, Muñoz-Torrero D. Shogaol–huprine hybrids: Dual antioxidant and anticholinesterase agents with β-amyloid and tau anti-aggregating properties. Bioorg Med Chem 2014; 22:5298-307. [DOI: 10.1016/j.bmc.2014.07.053] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 07/30/2014] [Accepted: 07/31/2014] [Indexed: 11/29/2022]
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Kumar NV, Murthy PS, Manjunatha JR, Bettadaiah BK. Synthesis and quorum sensing inhibitory activity of key phenolic compounds of ginger and their derivatives. Food Chem 2014; 159:451-7. [PMID: 24767081 DOI: 10.1016/j.foodchem.2014.03.039] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 03/06/2014] [Accepted: 03/08/2014] [Indexed: 01/13/2023]
Abstract
Phenolic components of ginger (Zingiber officinale Roscoe) viz. [6]-gingerol, [6]-shogaol and zingerone exhibited quorum sensing inhibitory activity (QSI) against Chromobacterium violaceum and Pseudomonas aeruginosa. The inhibitory activity of all the compounds was studied by zone inhibition, pyocyanin, and violacein assay. All the compounds displayed good inhibition at 500ppm. [6]-Azashogaol, a new derivative of [6]-shogaol has been synthesized by Beckmann rearrangement of its oxime in the presence of ZnCl2. The structure elucidation of this new derivative was carried out by 1D ((1)H NMR and (13)C NMR) and 2D-NMR (COSY, HSQC and NOESY) spectral studies. This compound showed good QSI activity against P. aeruginosa. An isoxazoline derivative of [6]-gingerol was prepared and it exhibited good QSI activity. Present study illustrated that, the phenolic compounds of ginger and their derivatives form a class of compounds with promising QSI activity.
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Affiliation(s)
- N Vijendra Kumar
- Plantation Products, Spices and Flavour Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570 020, India
| | - Pushpa S Murthy
- Plantation Products, Spices and Flavour Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570 020, India
| | - J R Manjunatha
- Plantation Products, Spices and Flavour Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570 020, India
| | - B K Bettadaiah
- Plantation Products, Spices and Flavour Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570 020, India.
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Tao H, Duan J, Li P. Inorganic-Base-Catalysed Synthesis of α,β-Unsaturated Ketones and 3,5-Disubstituted Cyclohex-2-en-1-ones. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201400017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mase N, Horibe T. Organocatalytic Knoevenagel Condensations by Means of Carbamic Acid Ammonium Salts. Org Lett 2013; 15:1854-7. [DOI: 10.1021/ol400462d] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nobuyuki Mase
- Department of Molecular Science, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8561, Japan
| | - Takuya Horibe
- Department of Molecular Science, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Hamamatsu 432-8561, Japan
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Traoré M, Maynadier M, Souard F, Choisnard L, Vial H, Wong YS. Forming spirocyclohexadienone-oxocarbenium cation species in the biomimetic synthesis of amomols. J Org Chem 2011; 76:1409-17. [PMID: 21250723 DOI: 10.1021/jo102414s] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The oxidation of appropriate 2-(4-hydroxyphenyl)ethyl ketones gives direct access to amomols by means of the formation of a transient spirocyclohexadienone-oxocarbenium ion that is intermolecularly intercepted by an alcohol. Furthermore, homochiral amomols and other new analogues were synthesized for the first time and were biologically evaluated on Plasmodium falciparum.
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Affiliation(s)
- Mariam Traoré
- Département de Pharmacochimie Moléculaire, Université Joseph Fourier-Grenoble 1, CNRS UMR 5063, CNRS ICMG FR 2607, bâtiment André Rassat, 470 rue de la Chimie, F-38041 Grenoble Cedex 9, France
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