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Gorantla JN, Choknud S, Suyanto E, Win HH, Hua Y, Santhi M, Wangngae S, Kamkaew A, Ketudat-Cairns M, Rojanathammanee L, Ketudat Cairns JR. Semi-synthesis of phenolic-amides and their cytotoxicity against THP-1, HeLa, HepG2 and MCF-7 cell lines. Nat Prod Res 2024; 38:2069-2077. [PMID: 37526601 DOI: 10.1080/14786419.2023.2241971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/19/2023] [Indexed: 08/02/2023]
Abstract
In the present study, we derivatized several hydroxycinnamic and hydroxybenzoic acids to phenolic amides (PAMs) via one step BOP mediated amide coupling reactions. Fifteen PAMs were synthesized in >40% yields and were screened for their cytotoxic activities against four cancer cell lines: THP-1 (leukaemia), HeLa (cervical), HepG2 (liver), and MCF-7 (breast), in comparison to 5-flurouracil (5-FU). Four amides showed IC50 ranging from 5 to 55 µM against all four cell lines. In contrast, tetradecyl-gallic-amide (13) affected only THP-1 leukaemia cells with IC50 of 3.08 µM. The activities of these compounds support the promise of phenolic amides as anticancer agents.
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Affiliation(s)
- Jaggaiah N Gorantla
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Sunaree Choknud
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Eko Suyanto
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Htun-Htun Win
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Yanling Hua
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- Center for Scientific and Technological Equipment, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Maniganda Santhi
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Sirilak Wangngae
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Anyanee Kamkaew
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Mariena Ketudat-Cairns
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Lalida Rojanathammanee
- School of Sports Science, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - James R Ketudat Cairns
- Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
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2
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Khettar I, Sinibaldi A, Schettini R, Gorini G, Siddiqa A, Litta AD, De Riccardis F, Izzo I, Sala GD. Flexible and Convergent Enantioselective Total Synthesis of ( R)-Juglanaloids A and B: Two Phthalide Spiro Alkaloids with Potential Alzheimer's Disease Inhibitory Activity. J Org Chem 2024; 89:7255-7262. [PMID: 38718382 DOI: 10.1021/acs.joc.4c00740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Juglanaloids A and B are recently isolated natural products characterized by an unprecedented spiro bicyclic isobenzofuranone-tetrahydrobenzazepinone framework and a promising antiamyloid activity. Here reported is a straightforward convergent total synthesis of these natural products, which were obtained in high enantiomeric purity (94% and >99% ee for juglanaloids A and B, respectively) through an eight-step longest linear sequence, based on an efficient and reliable enantioselective phase-transfer-catalyzed alkylation step. Considering the interesting biological activity of juglanaloids, this convenient, highly enantioselective, flexible, and predictable synthetic strategy promises to be a powerful tool for accessing potentially bioactive spiro bicyclic phthalide-tetrahydrobenzazepinone derivatives.
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Affiliation(s)
- Ibrahim Khettar
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
- Laboratory of Catalysis and Synthesis in Organic Chemistry, Abou Bekr Belkaïd University, Rue Abi Ayed Abdelkrim Fg Pasteur, B.P 119 13000, 13000 Tlemcen, Algeria
| | - Arianna Sinibaldi
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Rosaria Schettini
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Giorgio Gorini
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Ayesha Siddiqa
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Antonella Dentoni Litta
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Francesco De Riccardis
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Irene Izzo
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Giorgio Della Sala
- Dipartimento di Chimica e Biologia "A. Zambelli", Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
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3
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Oliva E, Fanti F, Palmieri S, Viteritti E, Eugelio F, Pepe A, Compagnone D, Sergi M. Predictive Multi Experiment Approach for the Determination of Conjugated Phenolic Compounds in Vegetal Matrices by Means of LC-MS/MS. Molecules 2022; 27:molecules27103089. [PMID: 35630565 PMCID: PMC9147803 DOI: 10.3390/molecules27103089] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 11/16/2022] Open
Abstract
Polyphenols (PCs) are a numerous class of bioactive molecules and are known for their antioxidant activity. In this work, the potential of the quadrupole/linear ion trap hybrid mass spectrometer (LIT-QqQ) was exploited to develop a semi-untargeted method for the identification of polyphenols in different food matrices: green coffee, Crocus sativus L. (saffron) and Humulus lupulus L. (hop). Several conjugate forms of flavonoids and hydroxycinnamic acid were detected using neutral loss (NL) as a survey scan coupled with dependent scans with enhanced product ion (EPI) based on information-dependent acquisition (IDA) criteria. The presented approach is focused on a specific class of molecules and provides comprehensive information on the different conjugation models that are related to specific base molecules, thus allowing a quick and effective identification of all possible combinations, such as mono-, di-, or tri-glycosylation or another type of conjugation such as quinic acid esters.
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4
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Moni L, Banfi L, Basso A, Mori A, Risso F, Riva R, Lambruschini C. A Thorough Study on the Photoisomerization of Ferulic Acid Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Lisa Moni
- Department of Chemistry and Industrial Chemistry University of Genova Via Dodecaneso, 31 16146 Genova Italy
| | - Luca Banfi
- Department of Chemistry and Industrial Chemistry University of Genova Via Dodecaneso, 31 16146 Genova Italy
| | - Andrea Basso
- Department of Chemistry and Industrial Chemistry University of Genova Via Dodecaneso, 31 16146 Genova Italy
| | - Alessia Mori
- Department of Chemistry and Industrial Chemistry University of Genova Via Dodecaneso, 31 16146 Genova Italy
| | - Federica Risso
- Department of Chemistry and Industrial Chemistry University of Genova Via Dodecaneso, 31 16146 Genova Italy
| | - Renata Riva
- Department of Chemistry and Industrial Chemistry University of Genova Via Dodecaneso, 31 16146 Genova Italy
| | - Chiara Lambruschini
- Department of Chemistry and Industrial Chemistry University of Genova Via Dodecaneso, 31 16146 Genova Italy
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5
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Hashimoto R, Iai H, Fujita R, Hanaya K, Higashibayashi S, Inoue H, Sugai T. Chemoenzymatic semisynthesis of caffeic acid β-phenethyl ester, an antioxidative component in propolis, from raw coffee bean extract. Biosci Biotechnol Biochem 2021; 85:476-480. [PMID: 33624772 DOI: 10.1093/bbb/zbaa077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 11/05/2020] [Indexed: 01/21/2023]
Abstract
Caffeic acid β-phenethyl ester (CAPE), an antioxidative bioactive catechol isolated from propolis, was semisynthesized from chlorogenic acid and related compounds in an extract of raw (unroasted) Robusta coffee (Coffea canephora) beans in 5 steps and a total yield of 31%. Oxidative degradation of the intermediates and target molecule was prevented by alkaline hydrolysis of the chlorogenic acids in the presence of sodium dithionite (Na2S2O4) and deprotection of the catecholic diacetate precursor by Candida antarctica lipase B-mediated transesterification as the final step.
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Affiliation(s)
- Riichi Hashimoto
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, Shibakoen, Minato-ku, Tokyo, Japan
| | - Hiyori Iai
- Yokohama Science Frontier High School, 6 Ono-cho, Tsurumi-ku, Yokohama, Japan
| | - Rie Fujita
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, Shibakoen, Minato-ku, Tokyo, Japan
| | - Kengo Hanaya
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, Shibakoen, Minato-ku, Tokyo, Japan
| | - Shuhei Higashibayashi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, Shibakoen, Minato-ku, Tokyo, Japan
| | - Hiroyoshi Inoue
- Department of Chemistry, School of Medicine, Keio University, Hiyoshi, Kohoku-ku, Yokohama, Japan
| | - Takeshi Sugai
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, Shibakoen, Minato-ku, Tokyo, Japan
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6
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DellaGreca M, Longobardo L. Protection and Activation of Hydroxycinnamic Acids in Water. ChemistrySelect 2020. [DOI: 10.1002/slct.202000176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Marina DellaGreca
- Department of Chemical ScienceUniversity of Napoli Federico II Via Cinthia 4 80126 Napoli Italy
| | - Luigi Longobardo
- Department of Chemical ScienceUniversity of Napoli Federico II Via Cinthia 4 80126 Napoli Italy
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7
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Pojero F, Poma P, Spanò V, Montalbano A, Barraja P, Notarbartolo M. Targeting multiple myeloma with natural polyphenols. Eur J Med Chem 2019; 180:465-485. [DOI: 10.1016/j.ejmech.2019.07.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/11/2019] [Accepted: 07/11/2019] [Indexed: 12/16/2022]
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8
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El-Seedi HR, Taher EA, Sheikh BY, Anjum S, Saeed A, AlAjmi MF, Moustafa MS, Al-Mousawi SM, Farag MA, Hegazy MEF, Khalifa SA, Göransson U. Hydroxycinnamic Acids: Natural Sources, Biosynthesis, Possible Biological Activities, and Roles in Islamic Medicine. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2018:269-292. [DOI: 10.1016/b978-0-444-64068-0.00008-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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9
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Cheng B, Müller R, Trauner D. Total Syntheses of Cystobactamids and Structural Confirmation of Cystobactamid 919‐2. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Bichu Cheng
- Department of Chemistry University of Munich Butenandtstrasse 5–13, Haus F 81377 Munich Germany
- Department of Chemistry New York University 100 Washington Square East, Room 712 New York NY 10003 USA
| | - Rolf Müller
- Department of Microbial Natural Products Helmholtz Institute for Pharmaceutical Research Saarland Helmholtz Center for Infection Research Saarland University 66123 Saarbrücken Germany
| | - Dirk Trauner
- Department of Chemistry University of Munich Butenandtstrasse 5–13, Haus F 81377 Munich Germany
- Department of Chemistry New York University 100 Washington Square East, Room 712 New York NY 10003 USA
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10
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Cheng B, Müller R, Trauner D. Total Syntheses of Cystobactamids and Structural Confirmation of Cystobactamid 919-2. Angew Chem Int Ed Engl 2017; 56:12755-12759. [PMID: 28731542 DOI: 10.1002/anie.201705387] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Indexed: 12/21/2022]
Abstract
The cystobactamids are a family of antibacterial natural products with unprecedented chemical scaffolds that are active against both Gram-positive and Gram-negative pathogens. Herein, we describe the first total synthesis of cystobactamid 919-2 from three fragments. Our convergent synthesis enabled both the confirmation of the correct structure and the determination of the absolute configuration of cystobactamid 919-2.
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Affiliation(s)
- Bichu Cheng
- Department of Chemistry, University of Munich, Butenandtstrasse 5-13, Haus F, 81377, Munich, Germany.,Department of Chemistry, New York University, 100 Washington Square East, Room 712, New York, NY, 10003, USA
| | - Rolf Müller
- Department of Microbial Natural Products, Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Center for Infection Research, Saarland University, 66123, Saarbrücken, Germany
| | - Dirk Trauner
- Department of Chemistry, University of Munich, Butenandtstrasse 5-13, Haus F, 81377, Munich, Germany.,Department of Chemistry, New York University, 100 Washington Square East, Room 712, New York, NY, 10003, USA
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11
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Min J, Guillen VS, Sharma A, Zhao Y, Ziegler Y, Gong P, Mayne CG, Srinivasan S, Kim SH, Carlson KE, Nettles KW, Katzenellenbogen BS, Katzenellenbogen JA. Adamantyl Antiestrogens with Novel Side Chains Reveal a Spectrum of Activities in Suppressing Estrogen Receptor Mediated Activities in Breast Cancer Cells. J Med Chem 2017; 60:6321-6336. [PMID: 28657320 DOI: 10.1021/acs.jmedchem.7b00585] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
To search for new antiestrogens more effective in treating breast cancers, we explored alternatives to the acrylic acid side chain used in many antiestrogens. To facilitate our search, we used a simple adamantyl ligand core that by avoiding stereochemical issues enabled rapid synthesis of acrylate ketone, ester, and amide analogs. All compounds were high affinity estrogen receptor α (ERα) ligands but displayed a range of efficacies and potencies as antiproliferative and ERα-downregulating agents. There were large differences in activity between compounds having minor structural changes, but antiproliferative and ERα-downregulating efficacies generally paralleled one another. Some compounds with side chain polar groups had particularly high affinities. The secondary carboxamides had the best cellular activities, and the 3-hydroxypropylamide was as efficacious as fulvestrant in suppressing cell proliferation and gene expression. This study has produced structurally novel antiestrogens based on a simple adamantyl core structure with acrylate side chains optimized for cellular antagonist activity.
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Affiliation(s)
| | | | | | | | | | | | | | - Sathish Srinivasan
- Department of Cancer Biology, The Scripps Research Institute , Jupiter, Florida 33458, United States
| | | | | | - Kendall W Nettles
- Department of Cancer Biology, The Scripps Research Institute , Jupiter, Florida 33458, United States
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12
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Sonar VP, Corona A, Distinto S, Maccioni E, Meleddu R, Fois B, Floris C, Malpure NV, Alcaro S, Tramontano E, Cottiglia F. Natural product-inspired esters and amides of ferulic and caffeic acid as dual inhibitors of HIV-1 reverse transcriptase. Eur J Med Chem 2017; 130:248-260. [PMID: 28254698 DOI: 10.1016/j.ejmech.2017.02.054] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 11/24/2022]
Abstract
Using an HIV-1 Reverse Transcriptase (RT)-associated RNase H inhibition assay as lead, bioguided fractionation of the dichloromethane extract of the Ocimum sanctum leaves led to the isolation of five triterpenes (1-5) along with three 3-methoxy-4-hydroxy phenyl derivatives (6-8). The structure of this isolates were determined by 1D and 2D NMR experiments as well as ESI-MS. Tetradecyl ferulate (8) showed an interesting RNase H IC50 value of 12.4 μM and due to the synthetic accessibility of this secondary metabolite, a structure-activity relationship study was carried out. A series of esters and amides of ferulic and caffeic acids were synthesized and, among all, the most active was N-oleylcaffeamide displaying a strong inhibitory activity towards both RT-associated functions, ribonuclease H and DNA polymerase. Molecular modeling studies together with Yonetani-Theorell analysis, demonstrated that N-oleylcaffeamide is able to bind both two allosteric site located one close to the NNRTI binding pocket and the other close to RNase H catalytic site.
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Affiliation(s)
- Vijay P Sonar
- Department of Life and Environmental Sciences, Drug Sciences Section, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Angela Corona
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella di Monserrato SS554, 09042, Monserrato, Cagliari, Italy
| | - Simona Distinto
- Department of Life and Environmental Sciences, Drug Sciences Section, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Elias Maccioni
- Department of Life and Environmental Sciences, Drug Sciences Section, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Rita Meleddu
- Department of Life and Environmental Sciences, Drug Sciences Section, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Benedetta Fois
- Department of Life and Environmental Sciences, Drug Sciences Section, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Costantino Floris
- Dipartimento di Scienze Chimiche, University of Cagliari, Cittadella di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Nilesh V Malpure
- Department of Botany, S. S. G. M. College, IN-423601 Kopargaon, District Ahmednagar, MS, India
| | - Stefano Alcaro
- Dipartimento di Scienze della Salute, Università"Magna Græcia" di Catanzaro, Campus "S. Venuta", Viale Europa, 88100 Catanzaro, Italy
| | - Enzo Tramontano
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella di Monserrato SS554, 09042, Monserrato, Cagliari, Italy
| | - Filippo Cottiglia
- Department of Life and Environmental Sciences, Drug Sciences Section, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy.
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13
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Cooperative Reinforcement of Ionic Liquid and Reactive Solvent on Enzymatic Synthesis of Caffeic Acid Phenethyl Ester as an In Vitro Inhibitor of Plant Pathogenic Bacteria. Molecules 2017; 22:molecules22010072. [PMID: 28045451 PMCID: PMC6155643 DOI: 10.3390/molecules22010072] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 12/16/2016] [Accepted: 12/28/2016] [Indexed: 11/17/2022] Open
Abstract
It is widely believed that lipases in ionic liquids (ILs) possess higher enzyme activity, stability and selectivity; however, reaction equilibrium is always limited by product inhibition, and the product is difficult to separate from non-volatile ILs using distillation. To solve this problem, using trialkylphosphine oxide (TOPO) as a complexing agent, a novel biphase of reactive solvent and IL was firstly reported for caffeic acid phenethyl ester (CAPE) production from methyl caffeate (MC) and 2-phenylethanol (PE) catalyzed by lipase via transesterification. The effects of the reaction parameters and their action mechanism were investigated, and the inhibition of CAPE against bacterial wilt pathogen Ralstonia solanacearum was firstly measured. The MC conversion of 98.83% ± 0.76% and CAPE yield of 96.29% ± 0.07% were obtained by response surface methodology in the 25 g/L TOPO-cyclohexane/[Bmim][Tf2N] (1:1, v/v); the complex stoichiometry calculation and FTIR spectrum confirmed that the reversible hydrogen-bond complexation between TOPO and caffeates significantly enhances the cooperative effect of two phases on the lipase-catalyzed reaction. The temperature was reduced by 14 °C; the MC concentration increased by 3.33-fold; the ratio of catalyst to donor decreased by 4.5-fold; and Km decreased 1.08-fold. The EC50 of CAPE against R. solanacearum was 0.17–0.75 mg/mL, suggesting that CAPE is a potential in vitro inhibitor of plant pathogenic bacteria.
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Wang SK, Chen MT, Zhao DY, You X, Luo QL. Iodine-Catalyzed Oxidative Aromatization: A Metal-Free Concise Approach to meta
-Substituted Phenols from Cyclohex-2-enones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600930] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Shi-Ke Wang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 People's Republic of China
| | - Ming-Tao Chen
- Key Laboratory of Applied Chemistry of Chongqing Municipality, College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 People's Republic of China
| | - Da-Yuan Zhao
- Key Laboratory of Applied Chemistry of Chongqing Municipality, College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 People's Republic of China
| | - Xia You
- Key Laboratory of Applied Chemistry of Chongqing Municipality, College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 People's Republic of China
| | - Qun-Li Luo
- Key Laboratory of Applied Chemistry of Chongqing Municipality, College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 People's Republic of China
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15
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Zhang Y, Liu T, Niu Z, Fu Y, Yang J, Song Y, Zhao S. A New Route for the Synthesis of the Repaglinide Key Intermediate 3-Ethoxy-4-Ethoxycarbonylphenylacetic Acid. JOURNAL OF CHEMICAL RESEARCH 2016. [DOI: 10.3184/174751916x14682401870800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new method is described for manufacturing 3-ethoxy-4-ethoxycarbonylphenylacetic acid, which is a key intermediate of the antidiabetic drug repaglinide, starting from 3-hydroxyphenylacetic acid and involving esterification, formylation, oxidation, etherification and selective hydrolysis. The effect of reaction temperature, time, solvent and substrate ratios on the yield were studied in detail and the optimal conditions are presented in the paper. The new method makes the scale-up operation easier and the environmental problems are fewer. The impurities in the intermediate of the new route were also determined. Characterisation of the product and intermediates involved was achieved by FTIR, 1H NMR, 13C NMR, HRMS and DSC.
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Affiliation(s)
- Yue Zhang
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, P.R. China
- Hebei Research Center of Pharmaceutical and Chemical Engineering, Shijiazhuang, 050018, P.R. China
- State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug, Shijiazhuang, 050018, P.R. China
| | - Tingting Liu
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, P.R. China
| | - Zhaohuan Niu
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, P.R. China
| | - Yajing Fu
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, P.R. China
| | - Jixia Yang
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, P.R. China
| | - Yongxing Song
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, P.R. China
| | - Shuchun Zhao
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, P.R. China
- Hebei Research Center of Pharmaceutical and Chemical Engineering, Shijiazhuang, 050018, P.R. China
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Leggio A, Belsito EL, De Luca G, Di Gioia ML, Leotta V, Romio E, Siciliano C, Liguori A. One-pot synthesis of amides from carboxylic acids activated using thionyl chloride. RSC Adv 2016. [DOI: 10.1039/c5ra24527c] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report on a one-pot synthesis of secondary and tertiary amides from carboxylic acids and amines in the presence of a tertiary amine by using thionyl chloride.
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Affiliation(s)
- A. Leggio
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria Edificio Polifunzionale
- I-87036 Arcavacata di Rende
- Italy
| | - E. L. Belsito
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria Edificio Polifunzionale
- I-87036 Arcavacata di Rende
- Italy
| | - G. De Luca
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- I-87036 Arcavacata di Rende
- Italy
| | - M. L. Di Gioia
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria Edificio Polifunzionale
- I-87036 Arcavacata di Rende
- Italy
| | - V. Leotta
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria Edificio Polifunzionale
- I-87036 Arcavacata di Rende
- Italy
| | - E. Romio
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria Edificio Polifunzionale
- I-87036 Arcavacata di Rende
- Italy
| | - C. Siciliano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria Edificio Polifunzionale
- I-87036 Arcavacata di Rende
- Italy
| | - A. Liguori
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione
- Università della Calabria Edificio Polifunzionale
- I-87036 Arcavacata di Rende
- Italy
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17
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Shirai A, Kajiura M, Omasa T. Synergistic Photobactericidal Activity Based on Ultraviolet-A Irradiation and Ferulic Acid Derivatives. Photochem Photobiol 2015; 91:1422-8. [DOI: 10.1111/php.12507] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 07/29/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Akihiro Shirai
- Department of Biological Science and Technology; Biosystems Engineering; Institute of Technology and Science; Tokushima University; Tokushima Japan
| | - Masato Kajiura
- Department of Biological Science and Technology; Faculty of Engineering; Tokushima University; Tokushima Japan
| | - Takeshi Omasa
- Department of Biological Science and Technology; Biosystems Engineering; Institute of Technology and Science; Tokushima University; Tokushima Japan
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18
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Zhang H, Marmin T, Cuierrier É, Soldera A, Dory Y, Zhao Y. A new comonomer design for enhancing the pH-triggered LCST shift of thermosensitive polymers. Polym Chem 2015. [DOI: 10.1039/c5py01126d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rational comonomer design leads to a large pH-induced LCST shift.
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Affiliation(s)
- Hu Zhang
- Département de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Thomas Marmin
- Département de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
| | | | - Armand Soldera
- Département de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Yves Dory
- Département de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Yue Zhao
- Département de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
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