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Coscarella M, Nardi M, Alipieva K, Bonacci S, Popova M, Procopio A, Scarpelli R, Simeonov S. Alternative Assisted Extraction Methods of Phenolic Compounds Using NaDESs. Antioxidants (Basel) 2023; 13:62. [PMID: 38247486 PMCID: PMC10812405 DOI: 10.3390/antiox13010062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/16/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024] Open
Abstract
A renewed understanding of eco-friendly principles is moving the industrial sector toward a shift in the utilization of less harmful solvents as a main strategy to improve manufacturing. Green analytical chemistry (GAC) has definitely paved the way for this transition by presenting green solvents to a larger audience. Among the most promising, surely DESs (deep eutectic solvents), NaDESs (natural deep eutectic solvents), HDESs (hydrophobic deep eutectic solvents), and HNaDESs (hydrophobic natural deep eutectic solvents), with their unique features, manifest a wide-range of applications, including their use as a means for the extraction of small bioactive compounds. In examining recent advancements, in this review, we want to focus our attention on some of the most interesting and novel 'solvent-free' extraction techniques, such as microwave-assisted extraction (MAE) and ultrasound-assisted extraction (UAE) in relation to the possibility of better exploiting DESs and NaDESs as plausible extracting solvents of the phenolic compounds (PCs) present in different matrices from olive oil components, such as virgin olive pomace, olive leaves and twigs, virgin and extra virgin olive oil (VOO and EVOO, respectively), and olive cake and olive mill wastewaters (OMWW). Therefore, the status of DESs and NaDESs is shown in terms of their nature, efficacy and selectivity in the extraction of bioactive phytochemicals such as secoiridoids, lignans, phenolic acids and alcohols. Related studies on experimental design and processes' optimization of the most promising DESs/NaDESs are also reviewed. In this framework, an extensive list of relevant works found in the literature is described to consider DESs/NaDESs as a suitable alternative to petrochemicals in cosmetics, pharmaceutical, or food applications.
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Affiliation(s)
- Mario Coscarella
- Department of Health Sciences, Università “Magna Græcia” di Catanzaro, Viale Europa, Campus Universitario “S. Venuta”, Germaneto, 88100 Catanzaro, Italy; (M.C.); (S.B.); (A.P.); (R.S.)
| | - Monica Nardi
- Department of Health Sciences, Università “Magna Græcia” di Catanzaro, Viale Europa, Campus Universitario “S. Venuta”, Germaneto, 88100 Catanzaro, Italy; (M.C.); (S.B.); (A.P.); (R.S.)
| | - Kalina Alipieva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bontchev Str. Bl. 9, 1113 Sofia, Bulgaria; (K.A.); (M.P.); (S.S.)
| | - Sonia Bonacci
- Department of Health Sciences, Università “Magna Græcia” di Catanzaro, Viale Europa, Campus Universitario “S. Venuta”, Germaneto, 88100 Catanzaro, Italy; (M.C.); (S.B.); (A.P.); (R.S.)
| | - Milena Popova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bontchev Str. Bl. 9, 1113 Sofia, Bulgaria; (K.A.); (M.P.); (S.S.)
| | - Antonio Procopio
- Department of Health Sciences, Università “Magna Græcia” di Catanzaro, Viale Europa, Campus Universitario “S. Venuta”, Germaneto, 88100 Catanzaro, Italy; (M.C.); (S.B.); (A.P.); (R.S.)
| | - Rosa Scarpelli
- Department of Health Sciences, Università “Magna Græcia” di Catanzaro, Viale Europa, Campus Universitario “S. Venuta”, Germaneto, 88100 Catanzaro, Italy; (M.C.); (S.B.); (A.P.); (R.S.)
| | - Svilen Simeonov
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bontchev Str. Bl. 9, 1113 Sofia, Bulgaria; (K.A.); (M.P.); (S.S.)
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2
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Cao DX, Chen Y, Jin WL, Li W, Wang R, Wang K, Tang AN, Zhu LN, Kong DM. Non-porous covalent organic polymers enable ultrafast removal of cationic dyes via carbonyl/hydroxyl-synergetic electrostatic adsorption. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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3
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Nardi M, Brocchini S, Somavarapu S, Procopio A. Hydroxytyrosol oleate: A promising neuroprotective nanocarrier delivery system of oleuropein and derivatives. Int J Pharm 2023; 631:122498. [PMID: 36535454 DOI: 10.1016/j.ijpharm.2022.122498] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Olive Phenols (OPs) are known to be potent antioxidants and possess various bioactivities and health benefits. Epidemiological studies suggested that consumption of olive oil reduces the risk of different diseases exerting a protective effect against certain malignant tumors (prostate, breast, digestive tract, endothelium, etc.). However, extremely low absorption rate of olive phenolic compounds restricts their bioactivity. In this context, solid lipid nanoparticles (SLNs) are a promising solution because they provide higher drug stability and can incorporate both lipophilic and hydrophilic drugs. Interesting experimental results have been obtained using hydroxytyrosol oleate (HtyOle) as a main component of a nanoparticle delivery system containing oleuropein (OL), oleuropein aglycone (3,4-DHPEA-EA), or hydroxytyrosol itself (Hty). In this work, hydroxytyrosol oleate (HtyOle) and hydroxytyrosol oleate (HtyOle)-based solid lipid nanoparticles were prepared and characterized. In addition, we evaluatedin vitro their antioxidant activity by DPPH assays and by ROS formation using the SH-SY5Y cell line.
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Affiliation(s)
- Monica Nardi
- Department of Pharmaceutics, UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK; Department of Health Sciences, Università "Magna Græcia" di Catanzaro, Viale Europa - Campus Universitario "S. Venuta" - Loc. Germaneto 88100, (CZ), Italy.
| | - Steve Brocchini
- Department of Pharmaceutics, UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Satyanarayana Somavarapu
- Department of Pharmaceutics, UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Antonio Procopio
- Department of Health Sciences, Università "Magna Græcia" di Catanzaro, Viale Europa - Campus Universitario "S. Venuta" - Loc. Germaneto 88100, (CZ), Italy
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4
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Eco-Friendly Synthesis of PEtOz-PA: A Promising Polymer for the Formulation of Curcumin-Loaded Micelles. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123788. [PMID: 35744914 PMCID: PMC9231041 DOI: 10.3390/molecules27123788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/09/2022] [Accepted: 06/11/2022] [Indexed: 11/17/2022]
Abstract
The need to develop alternative methods or to use "green" solvents constitutes an essential strategy under the emerging field of green chemistry, particularly in the development of new synthetic strategies in the field of pharmaceutic industry. We report an eco-friendly method of synthesis of poly(2-ethyl-2-oxazoline)-palmitoylate (PEtOz-PA) using Er(OTf)3 as Lewis's acid catalyst in 2-MeTHF. The novel biomolecule derivative was characterized to confirm palmitoyl group substitution and employed for the formulation, characterization, and antioxidant activity evaluation of curcumin-loaded polymeric micelles.
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The Highly Efficient Synthesis of 1,2-Disubstituted Benzimidazoles Using Microwave Irradiation. Molecules 2022; 27:molecules27051751. [PMID: 35268852 PMCID: PMC8911685 DOI: 10.3390/molecules27051751] [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: 02/09/2022] [Revised: 02/17/2022] [Accepted: 03/05/2022] [Indexed: 11/17/2022] Open
Abstract
The benzimidazole ring of the heterocyclic pharmacophores is one of the most widespread and studied systems in nature. The benzimidazole derivative synthesis study is a crucial point for the development of a clinically available benzimidazole-based drug. Here, we report a simple microwave assisted method for the synthesis of 1,2-disubstituted benzimidazoles. The combination of the molar ratio of N-phenyl-o-phenylenediamine:benzaldehyde (1:1) using microwave irradiation and only 1% mol of Er(OTf)3 provides an efficient and environmental mild access to a diversity of benzimidazoles under solvent-free conditions. The proposed method allows for the obtainment of the desired products in a short time and with very high selectivity.
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6
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Tanemura K. Reduction of aldehydes and ketones by a stoichiometric amount of NaBH4 using a small amount of MeOH or EtOH. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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7
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Montmorillonite K10: An Efficient Organo-Heterogeneous Catalyst for Synthesis of Benzimidazole Derivatives. Catalysts 2020. [DOI: 10.3390/catal10080845] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The use of toxic solvents, high energy consumption, the production of waste and the application of traditional processes that do not follow the principles of green chemistry are problems for the pharmaceutical industry. The organic synthesis of chemical structures that represent the starting point for obtaining active pharmacological compounds, such as benzimidazole derivatives, has become a focal point in chemistry. Benzimidazole derivatives have found very strong applications in medicine. Their synthesis is often based on methods that are not convenient and not very respectful of the environment. A simple montmorillonite K10 (MK10) catalyzed method for the synthesis of benzimidazole derivatives has been developed. The use of MK10 for heterogeneous catalysis provides various advantages: the reaction yields are decidedly high, the work-up procedures of the reaction are easy and suitable, there is an increase in selectivity and the possibility of recycling the catalyst without waste formation is demonstrated. The reactions were carried out in solvent-free conditions and in a short reaction time using inexpensive and environmentally friendly heterogeneous catalysis. It has been shown that the reaction process is applicable in the industrial field.
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Lu X, Wang M, Zhang L, Jiang J, Li L, Gao X, Zhang L, Li C, Chen H. Highly activity asymmetric hydrogenation of enones catalyzed by iridium complexes with chiral diamines and achiral phosphines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Santoro I, Nardi M, Benincasa C, Costanzo P, Giordano G, Procopio A, Sindona G. Sustainable and Selective Extraction of Lipids and Bioactive Compounds from Microalgae. Molecules 2019; 24:molecules24234347. [PMID: 31795131 PMCID: PMC6930523 DOI: 10.3390/molecules24234347] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/20/2019] [Accepted: 11/27/2019] [Indexed: 01/13/2023] Open
Abstract
The procedures for the extraction and separation of lipids and nutraceutics from microalgae using classic solvents have been frequently used over the years. However, these production methods usually require expensive and toxic solvents. Based on our studies involving the use of eco-sustainable methodologies and alternative solvents, we selected ethanol (EtOH) and cyclopentyl methyl ether (CPME) for extracting bio-oil and lipids from algae. Different percentages of EtOH in CPME favor the production of an oil rich in saturated fatty acids (SFA), useful to biofuel production or rich in bioactive compounds. The proposed method for obtaining an extract rich in saturated or unsaturated fatty acids from dry algal biomass is disclosed as eco-friendly and allows a good extraction yield. The method is compared both in extracted oil percentage yield and in extracted fatty acids selectivity to extraction by supercritical carbon dioxide (SC-CO2).
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Affiliation(s)
- Ilaria Santoro
- Dipartimento di Ingegneria per l’Ambiente e il Territorio e Ingegneria Chimica, Università della Calabria, Cubo 45A, I-87036 Rende, Italy;
- Correspondence: (I.S.); (M.N.); Tel.: +39 0961 3694116 (M.N.)
| | - Monica Nardi
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, I-88100 Germaneto (CZ), Italy; (P.C.); (A.P.)
- Correspondence: (I.S.); (M.N.); Tel.: +39 0961 3694116 (M.N.)
| | - Cinzia Benincasa
- CREA Research Centre for Olive, Citrus and Tree Fruit, C.da Li Rocchi, I-87036 Rende, Italy;
| | - Paola Costanzo
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, I-88100 Germaneto (CZ), Italy; (P.C.); (A.P.)
| | - Girolamo Giordano
- Dipartimento di Ingegneria per l’Ambiente e il Territorio e Ingegneria Chimica, Università della Calabria, Cubo 45A, I-87036 Rende, Italy;
| | - Antonio Procopio
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, I-88100 Germaneto (CZ), Italy; (P.C.); (A.P.)
| | - Giovanni Sindona
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Cubo 12C, I-87036 Rende, Italy;
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10
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Di Gioia ML, Cassano R, Costanzo P, Herrera Cano N, Maiuolo L, Nardi M, Nicoletta FP, Oliverio M, Procopio A. Green Synthesis of Privileged Benzimidazole Scaffolds Using Active Deep Eutectic Solvent. Molecules 2019; 24:molecules24162885. [PMID: 31398916 PMCID: PMC6719900 DOI: 10.3390/molecules24162885] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/02/2019] [Accepted: 08/07/2019] [Indexed: 11/25/2022] Open
Abstract
The exploitation and use of alternative synthetic methods, in the face of classical procedures that do not conform to the ethics of green chemistry, represent an ever-present problem in the pharmaceutical industry. The procedures for the synthesis of benzimidazoles have become a focus in synthetic organic chemistry, as they are building blocks of strong interest for the development of compounds with pharmacological activity. Various benzimidazole derivatives exhibit important activities such as antimicrobial, antiviral, anti-inflammatory, and analgesic activities, and some of the already synthesized compounds have found very strong applications in medicine praxis. Here we report a selective and sustainable method for the synthesis of 1,2-disubstituted or 2-substituted benzimidazoles, starting from o-phenylenediamine in the presence of different aldehydes. The use of deep eutectic solvent (DES), both as reaction medium and reagent without any external solvent, provides advantages in terms of yields as well as in the work up procedure of the reaction.
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Affiliation(s)
- Maria Luisa Di Gioia
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Dipartimento di Eccellenza L. 232/2016, Edificio Polifunzionale, Università della Calabria, 87036 Rende (CS), Italy.
| | - Roberta Cassano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Dipartimento di Eccellenza L. 232/2016, Edificio Polifunzionale, Università della Calabria, 87036 Rende (CS), Italy
| | - Paola Costanzo
- Department of Health Sciences, Magna Græcia University, Viale Europa, 88100 Germaneto CZ, Italy.
| | - Natividad Herrera Cano
- ICYTAC, CONICET and Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento. Química Orgánica. Ciudad Universitaria, Bv. Juan Filloy s/n, 5000 Córdoba, Argentina
| | - Loredana Maiuolo
- Dipartimento di Chimica e Tecnologie Chimiche, Via P. Bucci, cubo 12C, Università della Calabria, 87036 Rende (CS), Italy
| | - Monica Nardi
- Department of Health Sciences, Magna Græcia University, Viale Europa, 88100 Germaneto CZ, Italy
| | - Fiore Pasquale Nicoletta
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Dipartimento di Eccellenza L. 232/2016, Edificio Polifunzionale, Università della Calabria, 87036 Rende (CS), Italy
| | - Manuela Oliverio
- Department of Health Sciences, Magna Græcia University, Viale Europa, 88100 Germaneto CZ, Italy
| | - Antonio Procopio
- Department of Health Sciences, Magna Græcia University, Viale Europa, 88100 Germaneto CZ, Italy
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11
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Honda M, Kageyama H, Hibino T, Zhang Y, Diono W, Kanda H, Yamaguchi R, Takemura R, Fukaya T, Goto M. Improved Carotenoid Processing with Sustainable Solvents Utilizing Z-Isomerization-Induced Alteration in Physicochemical Properties: A Review and Future Directions. Molecules 2019; 24:molecules24112149. [PMID: 31181605 PMCID: PMC6600244 DOI: 10.3390/molecules24112149] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 11/20/2022] Open
Abstract
Carotenoids—natural fat-soluble pigments—have attracted considerable attention because of their potential to prevent of various diseases, such as cancer and arteriosclerosis, and their strong antioxidant capacity. They have many geometric isomers due to the presence of numerous conjugated double bonds in the molecule. However, in plants, most carotenoids are present in the all-E-configuration. (all-E)-Carotenoids are characterized by high crystallinity as well as low solubility in safe and sustainable solvents, such as ethanol and supercritical CO2 (SC-CO2). Thus, these properties result in the decreased efficiency of carotenoid processing, such as extraction and emulsification, using such sustainable solvents. On the other hand, Z-isomerization of carotenoids induces alteration in physicochemical properties, i.e., the solubility of carotenoids dramatically improves and they change from a “crystalline state” to an “oily (amorphous) state”. For example, the solubility in ethanol of lycopene Z-isomers is more than 4000 times higher than the all-E-isomer. Recently, improvement of carotenoid processing efficiency utilizing these changes has attracted attention. Namely, it is possible to markedly improve carotenoid processing using safe and sustainable solvents, which had previously been difficult to put into practical use due to the low efficiency. The objective of this paper is to review the effect of Z-isomerization on the physicochemical properties of carotenoids and its application to carotenoid processing, such as extraction, micronization, and emulsification, using sustainable solvents. Moreover, aspects of Z-isomerization methods for carotenoids and functional difference, such as bioavailability and antioxidant capacity, between isomers are also included in this review.
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Affiliation(s)
- Masaki Honda
- Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan.
| | - Hakuto Kageyama
- Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan.
| | - Takashi Hibino
- Faculty of Science & Technology, Meijo University, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan.
| | - Yelin Zhang
- Department of Materials Process Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Wahyu Diono
- Department of Materials Process Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Hideki Kanda
- Department of Materials Process Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Ryusei Yamaguchi
- Technical Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Ryota Takemura
- Innovation Division, Kagome Company, Limited, Nishitomiyama, Nasushiobara 329-2762, Japan.
| | - Tetsuya Fukaya
- Innovation Division, Kagome Company, Limited, Nishitomiyama, Nasushiobara 329-2762, Japan.
- Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Motonobu Goto
- Department of Materials Process Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
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Abstract
A simple and eco-friendly montmorillonite K10 (MK10)-catalyzed method for the synthesis of cyclopentenone derivatives from biomass-produced furfural has been developed. The versatility of this protocol is that the reactions were performed under solvent-free conditions and in a short reaction time under heterogeneous catalysis. Montmorillonite K10 is mostly explored as a heterogeneous catalyst since it is inexpensive and environmentally friendly.
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13
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Ramasamy B, P PA, Gangwar MK, Ghosh P. Asymmetric Transfer Hydrogenation ofα,β-Unsaturated Carbonyl Compounds to Saturated Alcohols as Catalyzed by Iridium Complexes of Tricyclic Bioxazoline-Fused Imidazole-Derived N-Heterocyclic Carbene Ligands. ChemistrySelect 2019. [DOI: 10.1002/slct.201803293] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Balasubramaniyam Ramasamy
- BASF Chemicals India Pvt. Ltd; Innovation campus, Navi; Mumbai 400 705
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Prakasham. A. P
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Manoj Kumar Gangwar
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
| | - Prasenjit Ghosh
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400 076
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14
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Olivito F, Costanzo P, Di Gioia ML, Nardi M, M O, Procopio A. Efficient synthesis of organic thioacetates in water. Org Biomol Chem 2018; 16:7753-7759. [PMID: 30299446 DOI: 10.1039/c8ob01896k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Thioacetates as precursors of thiols are interesting starting points for synthesizing other organosulfur compounds. Herein, we propose a simple, efficient and fast method to obtain organic thioacetates using water as a solvent. Taking into account the great attention that has been paid toward environmentally friendly synthetic procedures in the past decades, we prove the role and the strength of the thioacetate anion as a nucleophile for nucleophilic displacement reactions in an aqueous medium. The reactions were carried out under pH control, to prevent the decomposition of the mesylate starting materials, using potassium carbonate as a safe and mild base. A simple work up allows products to be obtained with excellent yield and acceptable purity.
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Affiliation(s)
- F Olivito
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy. and Dipartimento di Chimica, Università della Calabria, Cubo 12C, Arcavacata di Rende, CS, Italy
| | - P Costanzo
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy.
| | - M L Di Gioia
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Edificio Polifunzionale, Università della Calabria, 87030 Arcavacata di Rende, Cosenza, Italy
| | - M Nardi
- Dipartimento di Chimica, Università della Calabria, Cubo 12C, Arcavacata di Rende, CS, Italy and Dipartimento di Agraria, Università Telematica San Raffaele, Roma, Via di Val Cannuta, 247, 00166, Italy
| | - Oliverio M
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy.
| | - A Procopio
- Dipartimento di Scienze della Salute, Università Magna Græcia, Viale Europa, Germaneto, CZ, Italy.
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15
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Transesterification of Lactic Acid Oligomers with Ethanol, a Way to Anhydrous Ethyl Lactate: A Kinetic Study. Molecules 2018; 23:molecules23082044. [PMID: 30111729 PMCID: PMC6222406 DOI: 10.3390/molecules23082044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/07/2018] [Accepted: 08/14/2018] [Indexed: 12/02/2022] Open
Abstract
A new method for the preparation of anhydrous ethyl ester of lactic acid was studied. The selected method is based on catalytic transesterification of lactic acid oligomers, which were prepared for this purpose by autocatalytic oligomerization of lactic acid. In this work, a kinetic model for the case of catalytic alcoholysis of oligoesters was derived assuming a first-order reaction and equimolar content of reactants in the reaction mixture. The model makes it possible to obtain the values of the reaction rate and equilibrium constants and the equilibrium alcohol concentration by regression analysis at one time. The model was verified by measuring the rate of consumption of ethanol over the time at various reaction temperatures with anhydrous FeCl3 as the catalyst. The reaction was studied at overpressure under autogenous conditions in the temperature range of 100–180 °C. For the catalyst concentration of 1 mol %, the activation energy value was 64.35 kJ·mol−1. The dependence of equilibrium composition and rate constant on the temperature was obtained. The derived model is generally applicable to all first-order equilibrium reactions. The presumption is that the forward and reverse reactions are of the same order and have the same stoichiometry and equivalent amounts of reactants at the beginning of the reaction.
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16
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Syamala LVB, Mete TB, Bhat RG. FeCl 3 ·6H 2 O-catalyzed selective conjugate reduction of alkylidene- β -keto esters and alkylidene-1,3-diketones. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Biorenewable Deep Eutectic Solvent for Selective and Scalable Conversion of Furfural into Cyclopentenone Derivatives. Molecules 2018; 23:molecules23081891. [PMID: 30060584 PMCID: PMC6222497 DOI: 10.3390/molecules23081891] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/13/2018] [Accepted: 07/26/2018] [Indexed: 12/26/2022] Open
Abstract
The development of novel synthetic routes to produce bioactive compounds starting from renewable sources has become an important research area in organic and medicinal chemistry. Here, we present a low-cost procedure for the tunable and selective conversion of biomass-produced furfural to cyclopentenone derivatives using a mixture of choline chloride and urea as a biorenewable deep eutectic solvent (DES). The proposed medium is a nontoxic, biodegradable, and could be reused up to four times without any unfavorable effect on the reaction yield. The process is tunable, clean, cheap, simple and scalable and meets most of the criteria; therefore, it can be considered as an environmental sustainable process in a natural reaction medium.
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Erbium Salts as Non-Toxic Catalysts Compatible with Alternative Reaction Media. SUSTAINABILITY 2018. [DOI: 10.3390/su10030721] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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19
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Selective Acetylation of Small Biomolecules and Their Derivatives Catalyzed by Er(OTf)3. Catalysts 2017. [DOI: 10.3390/catal7090269] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Isoni V, Mendoza K, Lim E, Teoh SK. Screwing NaBH4 through a Barrel without a Bang: A Kneaded Alternative to Fed-Batch Carbonyl Reductions. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Valerio Isoni
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, 627833, Jurong Island, Singapore
| | - Ken Mendoza
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, 627833, Jurong Island, Singapore
| | - Eleen Lim
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, 627833, Jurong Island, Singapore
| | - Soo Khean Teoh
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, 627833, Jurong Island, Singapore
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Nardi M, Cano NH, De Nino A, Di Gioia ML, Maiuolo L, Oliverio M, Santiago A, Sorrentino D, Procopio A. An eco-friendly tandem tosylation/Ferrier N -glycosylation of amines catalyzed by Er(OTf) 3 in 2-MeTHF. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cascant MM, Breil C, Garrigues S, de la Guardia M, Fabiano-Tixier AS, Chemat F. A green analytical chemistry approach for lipid extraction: computation methods in the selection of green solvents as alternative to hexane. Anal Bioanal Chem 2017; 409:3527-3539. [PMID: 28389917 DOI: 10.1007/s00216-017-0323-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 02/14/2017] [Accepted: 02/28/2017] [Indexed: 01/15/2023]
Abstract
There is a great interest in finding alternatives and green solvents in extraction processes to replace petroleum based solvents. In order to investigate these possibilities, computational methods, as Hansen solubility parameters (HSP) and conductor-like screening model for real solvent (COSMO-RS), were used in this work to predict the solvation power of a series of solvents in salmon fish lipids. Additionally, experimental studies were used to evaluate the performance in lipids extraction using 2-methyltetrahydrofurane, cyclopentyl methyl ether, dimethyl carbonate, isopropanol, ethanol, ethyl acetate, p-cymene and d-limonene compared with hexane. Lipid classes of extracts were obtained by using high performance thin-layer chromatography (HPTLC), whereas gas chromatography with a flame ionization detector (GC/FID) technique was employed to obtain fatty acid profiles. Some differences between theoretical and experimental results were observed, especially regarding the behavior of p-cymene and d-limonene, which separate from the predicted capability. Results obtained from HPTLC indicated that p-cymene and d-limonene extract triglycerides (TAGs) and diglycerides (DAGs) at levels of 73 and 19%, respectively, whereas the other studied extracts contain between 75 and 76% of TAGs and between 16 and 17% of DAGs. Fatty acid profiles, obtained by using GC-FID, indicated that saturated fatty acids (SFAs) between 19.5 and 19.9% of extracted oil, monounsaturated fatty acids (MUFAs) in the range between 43.5 and 44.9%, and PUFAs between 31.2 and 34.6% were extracted. p-Cymene and limonene extracts contained lower percentages than the other studied solvents of some PUFAs due probably to the fact that these unsaturated fatty acids are more susceptible to oxidative degradation than MUFAs. Ethyl acetate has been found to be the best alternative solvent to hexane for the extraction of salmon oil lipids. Graphical Abstract ᅟ.
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Affiliation(s)
- Mari Merce Cascant
- Université d'Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Team Extraction, 84000, Avignon Cedex, France.,Department of Analytical Chemistry, University of Valencia, 50 Dr. Moliner Street, Research Building, 46100, Burjassot, Valencia, Spain
| | - Cassandra Breil
- Université d'Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Team Extraction, 84000, Avignon Cedex, France
| | - Salvador Garrigues
- Department of Analytical Chemistry, University of Valencia, 50 Dr. Moliner Street, Research Building, 46100, Burjassot, Valencia, Spain
| | - Miguel de la Guardia
- Department of Analytical Chemistry, University of Valencia, 50 Dr. Moliner Street, Research Building, 46100, Burjassot, Valencia, Spain.
| | - Anne Silvie Fabiano-Tixier
- Université d'Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Team Extraction, 84000, Avignon Cedex, France
| | - Farid Chemat
- Université d'Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Team Extraction, 84000, Avignon Cedex, France.
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Fianu GD, Schipper KC, Flowers II RA. Catalytic carbonyl hydrosilylations via a titanocene borohydride–PMHS reagent system. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01088e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Catalytic amounts of titanocene(iii) borohydride, generated under mild conditions from commercially available titanocene dichloride, in concert with a stoichiometric hydride source is shown to effectively reduce aldehydes and ketones to their respective alcohols in aprotic media.
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Vellaichamy B, Periakaruppan P. Catalytic hydrogenation performance of an in situ assembled Au@g-C3N4–PANI nanoblend: synergistic inter-constituent interactions boost the catalysis. NEW J CHEM 2017. [DOI: 10.1039/c7nj01085k] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel gold–graphitic carbon nitride–polyaniline (Au@g-C3N4–PANI) nanoblend was synthesized via in situ oxidative polymerization of aniline using auric acid as an oxidant in the presence of g-C3N4.
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Monticelli S, Castoldi L, Murgia I, Senatore R, Mazzeo E, Wackerlig J, Urban E, Langer T, Pace V. Recent advancements on the use of 2-methyltetrahydrofuran in organometallic chemistry. MONATSHEFTE FUR CHEMIE 2016; 148:37-48. [PMID: 28127090 PMCID: PMC5225237 DOI: 10.1007/s00706-016-1879-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 11/13/2016] [Indexed: 12/28/2022]
Abstract
ABSTRACT Since the introduction of 2-methyltetrahydrofuran as an useful alternative to the classical tetrahydrofuran, there has been a continuous interest in the synthetic community operating at academic and industrial towards it. In particular, the much higher stability that basic organometallic reagents display in 2-methyltetrahydrofuran makes it suitable for processes involving such sensitive species including asymmetric transformations. The easy formation of an azeotropic mixture with water, the substantial immiscibility with water, and the fact it derives from natural sources (corncobs or bagasse), allow to consider it in agreement with the Anastas' Geen Chemistry principles. In this minireview, selected examples of its employment in organometallic transformations ranging from carbanions to radical and transition metal-catalyzed processes are provided. GRAPHICAL ABSTRACT
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Affiliation(s)
- Serena Monticelli
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Laura Castoldi
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Irene Murgia
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Raffaele Senatore
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Eugenia Mazzeo
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Judith Wackerlig
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Ernst Urban
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Thierry Langer
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Vittorio Pace
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
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Herrera Cano N, Uranga JG, Nardi M, Procopio A, Wunderlin DA, Santiago AN. Selective and eco-friendly procedures for the synthesis of benzimidazole derivatives. The role of the Er(OTf) 3 catalyst in the reaction selectivity. Beilstein J Org Chem 2016; 12:2410-2419. [PMID: 28144309 PMCID: PMC5238590 DOI: 10.3762/bjoc.12.235] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/28/2016] [Indexed: 11/23/2022] Open
Abstract
An improved and greener protocol for the synthesis of benzimidazole derivatives, starting from o-phenylenediamine, with different aldehydes is reported. Double-condensation products were selectively obtained when Er(OTf)3 was used as the catalyst in the presence of electron-rich aldehydes. Conversely, the formation of mono-condensation products was the preferred path in absence of this catalyst. One of the major advantages of these reactions was the formation of a single product, avoiding extensive isolation and purification of products, which is frequently associated with these reactions. Theoretical calculations helped to understand the different reactivity established for these reactions. Thus, we found that the charge density on the oxygen of the carbonyl group has a significant impact on the reaction pathway. For instance, electron-rich aldehydes better coordinate to the catalyst, which favours the addition of the amine group to the carbonyl group, therefore facilitating the formation of double-condensation products. Reactions with aliphatic or aromatic aldehydes were possible, without using organic solvents and in a one-pot procedure with short reaction time (2–5 min), affording single products in excellent yields (75–99%). This convenient and eco-friendly methodology offers numerous benefits with respect to other protocols reported for similar compounds.
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Affiliation(s)
- Natividad Herrera Cano
- INFIQC-CONICET and Facultad de Ciencias Químicas, Departamento de Química Orgánica, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, 5000 Argentina
| | - Jorge G Uranga
- INFIQC-CONICET and Facultad de Ciencias Químicas, Departamento de Química Orgánica, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, 5000 Argentina
| | - Mónica Nardi
- Dipartimento di Chimica, Università della Calabria Cubo 12C, 87036-Arcavacata di Rende (CS), Italia
| | - Antonio Procopio
- Dipartimento di Scienze della Salute, Università Magna Graecia, Viale Europa, 88100-Germaneto (CZ), Italia
| | - Daniel A Wunderlin
- ICYTAC-CONICET and Facultad de Ciencias Químicas, Departamento de Química Orgánica, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, 5000 Argentina
| | - Ana N Santiago
- INFIQC-CONICET and Facultad de Ciencias Químicas, Departamento de Química Orgánica, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, 5000 Argentina
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Jones-Mensah E, Nickerson LA, Deobald JL, Knox HJ, Ertel AB, Magolan J. Cerium-free Luche reduction directed by rehydrated alumina. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Nardi M, Cano NH, Costanzo P, Oliverio M, Sindona G, Procopio A. Aqueous MW eco-friendly protocol for amino group protection. RSC Adv 2015. [DOI: 10.1039/c4ra16683c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper a new catalyst-free and on-water method for protection of amines and amino acids with di-tert-butyl dicarbonate, 9-fluorenylmethoxycarbonyl chloride, acetyl chloride and tosyl chloride is presented.
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Affiliation(s)
- M. Nardi
- Dipartimento di Chimica
- Università della Calabria Cubo 12C
- 87036-Arcavacata di Rende (CS)
- Italia
| | - N. Herrera Cano
- INFIQC
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - P. Costanzo
- Dipartimento di Scienze della Salute
- Università Magna Graecia
- Italia
| | - M. Oliverio
- Dipartimento di Scienze della Salute
- Università Magna Graecia
- Italia
| | - G. Sindona
- Dipartimento di Chimica
- Università della Calabria Cubo 12C
- 87036-Arcavacata di Rende (CS)
- Italia
| | - A. Procopio
- Dipartimento di Scienze della Salute
- Università Magna Graecia
- Italia
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