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Weindl C, Hintermann L. Synthesis of Indolines via Base-Mediated C-H Activation and Defluorinative C-N Coupling, with no Need for Transition-Metals. Chemistry 2024:e202401034. [PMID: 38693605 DOI: 10.1002/chem.202401034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/20/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
Syntheses of (partially) aromatic nitrogen heterocycles increasingly rely on transition-metal catalyzed C-C- and C-N-cross-coupling reactions. Here we describe a different approach to the synthesis of indolines by a domino C(sp3)-H activation, 1,2-addition, and defluorinative SNAr-cyclization sequence to provide the target 1,2-diarylindolines (1,2-diaryl-2,3-dihydroindoles) from ortho-fluorinated methyl-arenes and N-aryl imines (benzylidene anilines) in a cyclocondensation that is mediated by potassium hexa-methyl-di-silazide (KHMDS) as base exclusively. This transition-metal-free process via C-H and C-F bond activation provides a one-step entry into a wide array of indoline scaffolds (43 examples, up to 96% yield). This privileged substructure is common in natural products and pharmaceuticals alike, and cannot be accessed by traditional condensation reactions.
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Affiliation(s)
- Christian Weindl
- Technische Universität München, School of Natural Science, Department Chemie, Lichtenbergstr. 4, 85748, Garching bei München, GERMANY
| | - Lukas Hintermann
- Technische Universität München, School of Natural Sciences, Department Chemie, Lichtenbergstr. 4, 85748, Garching bei München, GERMANY
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2
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Cai J, Zhao B, Zhang Q, Wang AH, Zhang JH, Liu B, Zeng MH. Mn(II) Promoted Divergent-Convergent Domino Reaction Giving Dinuclear Tetrasubstituted Pyrrole Complex. Chemistry 2024; 30:e202303553. [PMID: 38251274 DOI: 10.1002/chem.202303553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 01/23/2024]
Abstract
Domino reaction of benzo[d]thiazole-2-methylamine (S1) has been developed in the presence of MnCl2 ⋅ 4H2O, leading to tetrasubstituted pyrrole coordinated dinuclear Mn(II) complex 1 ([MnClP]2, P-=2,3,4,5-tetrakis(benzo[d]thiazol-2-yl)pyrrol-1-ide). The reaction process has been studied by assigning a series of intermediates based on time-dependent mass spectrometry, control experiments, crystallography, and density functional theory (DFT) theoretical calculation. A plausible mechanism involving an unprecedented divergent-convergent domino sequence has been proposed. Compound S1 could be activated by MnCl2 ⋅ 4H2O via coordination, which divergently produces two intermediates imine II (1-(benzo[d]thiazol-2-yl)-N-(benzo[d]thiazol-2-ylmethyl)methanimine) and alkene C (1,2-bis(benzo[d]thiazol-2-yl)ethene) through oxidative self-condensation and free radical coupling followed by elimination, respectively. They could then react with each other convergently via formal [3+2] cycloaddition to give deprotonated tetrasubstituted pyrrole coordinated intermediate [MnClP] after aromatization. Dimerization of [MnClP] produces the final product 1. Three C-C bonds and one C-N bond are formed through this six-step domino sequence. The corresponding organic skeleton (HP: 2,2',2'',2'''-(1H-pyrrole-2,3,4,5-tetrayl)tetrakis(benzo[d]thiazole)) has been obtained from 1 and shows a higher fluorescent quantum yield (52 %) than the reported 3,4-diphenyl substituted analogue 2,2'-(3,4-diphenyl-1H-pyrrole-2,5-diyl)bis(benzo[d]thiazole) (DPB) (42 %).
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Affiliation(s)
- Jin Cai
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Bing Zhao
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Qi Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Ao-Hua Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Jia-Hao Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Bin Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
| | - Ming-Hua Zeng
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, P. R. China
- School of Chemistry and Pharmaceutical Sciences, State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, P. R. China
- College of Chemistry and Chemical Engineering, Jinggangshan University, Ji'an, 343000, P. R. China
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3
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Astakhov GS, Shigaev RR, Borisova TN, Ershova AA, Titov AA, Varlamov AV, Voskressensky LG, Matveeva MD. Facile synthesis of pyrrolo[2,1-a]isoquinolines by domino reaction of 1-aroyl-3,4-dihydroisoquinolines with conjugated ketones, nitroalkenes and nitriles. Mol Divers 2020; 25:2441-2446. [PMID: 33040250 DOI: 10.1007/s11030-020-10146-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 09/26/2020] [Indexed: 12/01/2022]
Abstract
A convenient protocol for the synthesis of 5,6-dihydropyrrolo[2,1-a]isoquinolines with various electron-withdrawing substituents at C-2 atom is described. This approach is based on the two-component domino reaction of 1-aroyl-3,4-dihydroisoquinolines with α,β-unsaturated ketones, nitroalkenes and acrylonitrile. Depending on the selected substrates, the reaction was performed in TFE under reflux or under microwave irradiation. Only for the two examples, a transition metal catalyst was used.
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Affiliation(s)
- Grigorii S Astakhov
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198.,Laboratory of Metal Hydrides (MHLab), A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences, Vavilov St. 28, GSP-1, B-334, Moscow, Russia, 119991
| | - Rinat R Shigaev
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Tatiana N Borisova
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Anastasia A Ershova
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Alexander A Titov
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Alexey V Varlamov
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Leonid G Voskressensky
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198
| | - Maria D Matveeva
- Department of Organic Chemistry, Peoples' Friendship, University of Russia (RUDN University), Miklukho-Maklaya st 6, Moscow, Russia, 117198.
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4
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Yue X, Festa AA, Storozhenko OA, Varlamov AV, Subramani K, Boccarelli A, Purgatorio R, Altomare CD, Voskressensky LG. Reductive domino reaction to access chromeno[2,3-c]isoquinoline-5-amines with antiproliferative activities against human tumor cells. Bioorg Chem 2020; 104:104169. [PMID: 32920352 DOI: 10.1016/j.bioorg.2020.104169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/04/2020] [Accepted: 08/03/2020] [Indexed: 01/09/2023]
Abstract
An interaction of homophthalonitrile with salicylaldehydes proceeds as a novel domino reaction and results in the formation of nineteen 12H-chromeno[2,3-c]isoquinoline-5-amine derivatives. Four new bonds and two cycles are forged in a single synthetic operation, employing cheap and eco-friendly ammonium formate, acting both as a catalyst and a reducing agent. The in vitro cytotoxicity tests revealed antiproliferative activities against five human tumor cell lines, including the cisplatin-resistant ovarian carcinoma one (A2780cp8), with inhibitory potency data (IC50) in the low micromolar range in most cases. Molecular docking calculations and fluorescence quenching studies revealed possible binding properties with DNA of the active compounds.
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Affiliation(s)
- Xiaoyi Yue
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow, Russia
| | - Alexey A Festa
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow, Russia
| | - Olga A Storozhenko
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow, Russia
| | - Alexey V Varlamov
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow, Russia
| | - Karthikeyan Subramani
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow, Russia
| | - Angelina Boccarelli
- Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Rosa Purgatorio
- Department of Pharmacy-Drug Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy
| | - Cosimo D Altomare
- Department of Pharmacy-Drug Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125 Bari, Italy
| | - Leonid G Voskressensky
- Organic Chemistry Department, Science Faculty, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st., 6, Moscow, Russia
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5
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Shearer C, Desaunay O, Zorc S, Richaud AD, Samanta SS, Jeedimalla N, Roche SP. Intercepted-Knoevenagel condensation for the synthesis of unsymmetrical fused-tricyclic 4 H-pyrans. Tetrahedron 2019; 75. [PMID: 31741543 DOI: 10.1016/j.tet.2019.130606] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
4H-Pyrans (4H-Pys) and 1,4-dihydropyridines (1,4-DHPs) are important classes of heterocyclic scaffolds in medicinal chemistry. Herein, an indium(III)-catalyzed one-pot domino reaction for the synthesis of highly functionalized 4H-Pys, and a model of 1,4-DHP is reported. This alternative approach to the challenging Hantzsch 4-component reaction enables the synthesis of fused-tricyclic heterocycles, and the mechanistic studies underline the importance of an intercepted-Knoevenagel adduct to achieve higher chemoselectivity towards these types of unsymmetrical heterocycles.
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Affiliation(s)
- Charles Shearer
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, United States
| | - Oriane Desaunay
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, United States
| | - Stephen Zorc
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, United States
| | - Alexis D Richaud
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, United States
| | - Shyam S Samanta
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, United States
| | - Nagalakshmi Jeedimalla
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, United States
| | - Stéphane P Roche
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431, United States
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Abstract
This chapter covers the literature since the advent, in the 21st century, of total syntheses of alkaloids using enantio- or diastereoselective organocatalytic reactions to construct the alkaloid scaffolds. The details of these alkaloid syntheses are described separately for each basic skeleton, including indole, indoline, oxindole, and piperidine alkaloids.
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7
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Zonouzi A, Izakian Z, Ng SW. Novel domino procedures for the synthesis of chromene derivatives and their isomerization. Mol Divers 2016; 20:627-38. [PMID: 27003393 DOI: 10.1007/s11030-016-9664-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 02/28/2016] [Indexed: 11/24/2022]
Abstract
Novel tricyclic keto diesters have been synthesized by a one-pot three-component procedure via DABCO-catalyzed domino Knoevenagel-Michael addition reactions. Also, an efficient four-component reaction for the synthesis of another new group of tricyclic keto diesters has been developed via domino Knoevenagel-intramolecular oxo-Diels-Alder reactions. A selective thermal isomerization of the synthesized chromenes to fumarates is also described. X-ray analyses confirm unambiguously the structures of the products.
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Affiliation(s)
- Afsaneh Zonouzi
- School of Chemistry, University College of Science, University of Tehran, Tehran, Iran. .,Pharmaceutical and Cosmetic Research Center (PCRC), University of Tehran Research Institute, Tehran, Iran.
| | - Zakieh Izakian
- School of Chemistry, University College of Science, University of Tehran, Tehran, Iran.,Pharmaceutical and Cosmetic Research Center (PCRC), University of Tehran Research Institute, Tehran, Iran
| | - Seik Weng Ng
- Department of Chemistry, University of Malaya, 50603, Kuala Lumpour, Malaysia.,Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Cappelletti L, Vaghi L, Rinaldi L, Rotolo L, Palmisano G, Cravotto G, Penoni A. One-pot sonochemical synthesis of ferrocenyl derivatives via a three-component reaction in aqueous media. Ultrason Sonochem 2015; 27:30-36. [PMID: 26186817 DOI: 10.1016/j.ultsonch.2015.04.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 03/28/2015] [Accepted: 04/14/2015] [Indexed: 06/04/2023]
Abstract
An ultrasound-assisted three-component, one-pot domino reaction with ferrocenecarboxaldehyde is herein reported. The sequence of reactions entails the allylindation and dehydrative alkylation of stabilized C-nucleophiles (e.g. electron-rich-(hetero)aromatics and stabilized enols) and N-nucleophiles (e.g. azoles). Sonochemical reactions have been performed in three different high-intensity reactors: a bath (20.3 kHz, 60 W), as well as two cup horns working at 19.9 kHz (75 W) and 300.5 kHz (70 W) giving a library of 18 new ferrocenyl derivatives.
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Affiliation(s)
- Luca Cappelletti
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Luca Vaghi
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Laura Rinaldi
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, I-10125 Turin, Italy
| | - Laura Rotolo
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, I-10125 Turin, Italy
| | - Giovanni Palmisano
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco and NIS - Centre for Nanostructured Interfaces and Surfaces, University of Turin, Via P. Giuria 9, I-10125 Turin, Italy
| | - Andrea Penoni
- Dipartimento di Scienza e Alta Tecnologia, University of Insubria, Via Valleggio 11, 22100 Como, Italy
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Abdelkhalik AM, Paul NK, Jha A. Concise synthesis of 12a-methyl-11-aryl-1,2-dihydrobenzo[f]pyrrolo[1,2-a]quinolin-3(12aH)-ones as racemic 14-azaestrogen analogs. Steroids 2015; 98:107-13. [PMID: 25804763 DOI: 10.1016/j.steroids.2015.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 03/04/2015] [Accepted: 03/12/2015] [Indexed: 10/23/2022]
Abstract
A concise method for the synthesis of 14-azasteroid analogs with angular methyl group at C-13 of the steroidal nucleus has been reported in this paper. We have developed an interesting cascade reaction of arylacetylenes and N-(naphthalen-2-yl)pent-4-ynamides under gold (III)-catalysis to produce novel tetracyclic 12a-methyl-11-aryl-1,2-dihydrobenzo[f]pyrrolo[1,2-a]quinolin-3(12aH)-ones which may be viewed as 14-azaestrogen analogs.
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Affiliation(s)
| | - Nawal K Paul
- Department of Chemistry, Acadia University, Wolfville, NS, Canada
| | - Amitabh Jha
- Department of Chemistry, Acadia University, Wolfville, NS, Canada.
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Chiacchio U, Barbera V, Bonfanti R, Broggini GL, Campisi A, Gazzola S, Parenti R, Romeo G. Synthesis and biological evaluation of 1,7,8,8a-tetrahydro-3H-oxazolo[3,4-a]pyrazin-6(5H)-ones as antitumoral agents. Bioorg Med Chem 2013; 21:5748-53. [PMID: 23916151 DOI: 10.1016/j.bmc.2013.07.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/08/2013] [Accepted: 07/09/2013] [Indexed: 10/26/2022]
Abstract
A series of 1,7,8,8a-tetrahydro-3H-oxazolo[3,4-a]pyrazin-6(5H)-ones has been synthesized by an intramolecular, palladium(II) catalyzed, aminooxygenation of alkenyl ureas, readily available from glycine allylamides as starting materials. Biological tests showed that the obtained compounds are endowed with an interesting antitumoral activity against two human thyroid cancer cell lines, namely FTC-133 and 8305C, by promoting the apoptotic pathway and DNA fragmentation.
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Affiliation(s)
- Ugo Chiacchio
- Dipartimento di Scienze del Farmaco, Università di Catania, Italy.
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