1
|
Quintavalla A, Carboni D, Brusa A, Lombardo M. Selective Hydrofunctionalization of N-Allenyl Derivatives with Heteronucleophiles Catalyzed by Brønsted Acids. J Org Chem 2024; 89:2320-2342. [PMID: 38298114 DOI: 10.1021/acs.joc.3c02322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
In this study, we present a novel and environmentally sustainable protocol for the γ-hydrofunctionalization of N-allenyl compounds using various heteronucleophiles catalyzed solely by simple Brønsted acids. The method displays remarkable attributes, highlighting its sustainability, efficiency, regio- and stereoselectivity, as well as its versatile applicability to diverse heteroatom-containing enamides. Notably, our approach eliminates the need for metal catalysts and toxic solvents, representing a significant advancement in greener chemistry practices. We demonstrate the broad scope of our protocol by successfully scaling up reactions to gram-scale syntheses, underscoring its robustness for potential industrial implementation. The resulting γ-heterosubstituted enamides offer new possibilities for further synthetic transformations, yielding highly functionalized compounds with diverse applications. Mechanistic investigations reveal the pivotal role of CSA as a catalyst, enabling alcohol addition via a covalent activation mode.
Collapse
Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
- Center for Chemical Catalysis-C3, Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
| | - Davide Carboni
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
- Center for Chemical Catalysis-C3, Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
| | - Alessandro Brusa
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
| | - Marco Lombardo
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
- Center for Chemical Catalysis-C3, Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
| |
Collapse
|
2
|
Quintavalla A, Carboni D, Simeone M, Lombardo M. Stereoselective Synthesis of α-Disubstituted β-Homoprolines. Org Lett 2023; 25:7067-7071. [PMID: 37729003 PMCID: PMC10546376 DOI: 10.1021/acs.orglett.3c02891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Indexed: 09/22/2023]
Abstract
An efficient enantioselective synthesis of chiral α-disubstituted β-homoprolines was developed, starting with the stereodivergent allylation of chiral N-tert-butanesulfinyl imines derived from 4-bromobutanal with indium or zinc and using well-established and reliable synthetic transformations. This methodology allows the easy introduction of different substituents at the α-position of the pyrrolidine scaffold and is characterized by the possibility of switching the absolute configuration of the newly formed stereocenter either by changing the configuration of the tert-butanesufinamide chiral auxiliary or by using a different stereodivergent allylation protocol with the same auxiliary.
Collapse
Affiliation(s)
- Arianna Quintavalla
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
- Center
for Chemical Catalysis - C3, Alma Mater
Studiorum - Università di Bologna, via P. Gobetti 85, 40129 Bologna, Italy
| | - Davide Carboni
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
- Center
for Chemical Catalysis - C3, Alma Mater
Studiorum - Università di Bologna, via P. Gobetti 85, 40129 Bologna, Italy
| | - Maria Simeone
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
| | - Marco Lombardo
- Alma
Mater Studiorum - University of Bologna, Department of Chemistry “G. Ciamician”, via P. Gobetti 85, 40129 Bologna, Italy
- Center
for Chemical Catalysis - C3, Alma Mater
Studiorum - Università di Bologna, via P. Gobetti 85, 40129 Bologna, Italy
| |
Collapse
|
3
|
Quintavalla A, Carboni D, Sepe C, Mummolo L, Zaccheroni N, Lombardo M. Towards a More Sustainable Photocatalyzed α‐Arylation of Amines: Green Solvents, Catalyst Recycling and Low Loading. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202201123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
4
|
Quintavalla A, Veronesi R, Zambardino D, Carboni D, Lombardo M. Diastereoselective Synthesis of Chiral Oxathiazine 2‐Oxide Scaffolds as Sulfinyl Transfer Agents. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Arianna Quintavalla
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Ruben Veronesi
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Demetra Zambardino
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Davide Carboni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Center for Chemical Catalysis-C3 Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
5
|
Quintavalla A, Veronesi R, Speziali L, Martinelli A, Zaccheroni N, Mummolo L, Lombardo M. Allenamides Playing Domino: A Redox‐Neutral Photocatalytic Synthesis of Functionalized 2‐Aminofurans. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Arianna Quintavalla
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ruben Veronesi
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Laura Speziali
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ada Martinelli
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Nelsi Zaccheroni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Liviana Mummolo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
6
|
Lardani D, Marti R, Quintavalla A, Lombardo M, Trombini C. Multidecagram Scale Synthesis of an Endoperoxide, Precursor of Anti-malarial and Anti-leishmanial Agents, via Free-Radical [2 + 2 + 2] Annulation with Molecular Oxygen. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.1c00309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Davide Lardani
- Institut ChemTech, HES-SO, Hochschule für Technik und Architektur, Boulevard de Pérolles 80, CH-1700 Freiburg, Switzerland
| | - Roger Marti
- Institut ChemTech, HES-SO, Hochschule für Technik und Architektur, Boulevard de Pérolles 80, CH-1700 Freiburg, Switzerland
| | - Arianna Quintavalla
- Alma Mater Studiorum, Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Marco Lombardo
- Alma Mater Studiorum, Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Claudio Trombini
- Alma Mater Studiorum, Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| |
Collapse
|
7
|
Moroni G, Calabria D, Quintavalla A, Lombardo M, Mirasoli M, Roda A, Gioiello A. Thermochemiluminescence‐Based Sensitive Probes: Synthesis and Photophysical Characterization of Acridine‐Containing 1,2‐Dioxetanes Focusing on Fluorophore Push‐Pull Effects. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Giada Moroni
- Department of Pharmaceutical Sciences University of Perugia Via del Liceo 1 06122 Perugia Italy
- Department of Chemistry “Giacomo Ciamician” University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Donato Calabria
- Department of Chemistry “Giacomo Ciamician” University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Arianna Quintavalla
- Department of Chemistry “Giacomo Ciamician” University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Department of Chemistry “Giacomo Ciamician” University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Mara Mirasoli
- Department of Chemistry “Giacomo Ciamician” University of Bologna Via Selmi 2 40126 Bologna Italy
| | - Aldo Roda
- Department of Chemistry “Giacomo Ciamician” University of Bologna Via Selmi 2 40126 Bologna Italy
- National Institute of Biostructures and Biosystems (INBB) Viale delle Medaglie d'Oro 305 00136 Rome Italy
| | - Antimo Gioiello
- Department of Pharmaceutical Sciences University of Perugia Via del Liceo 1 06122 Perugia Italy
| |
Collapse
|
8
|
Quintavalla A, Veronesi R, Carboni D, Martinelli A, Zaccheroni N, Mummolo L, Lombardo M. Chemodivergent Photocatalytic Synthesis of Dihydrofurans and β,γ‐Unsaturated Ketones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100260] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Arianna Quintavalla
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ruben Veronesi
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Davide Carboni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ada Martinelli
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Nelsi Zaccheroni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Liviana Mummolo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
9
|
Ortalli M, Varani S, Cimato G, Veronesi R, Quintavalla A, Lombardo M, Monari M, Trombini C. Evaluation of the Pharmacophoric Role of the O-O Bond in Synthetic Antileishmanial Compounds: Comparison between 1,2-Dioxanes and Tetrahydropyrans. J Med Chem 2020; 63:13140-13158. [PMID: 33091297 PMCID: PMC8018184 DOI: 10.1021/acs.jmedchem.0c01589] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Indexed: 12/17/2022]
Abstract
Leishmaniases are neglected diseases that can be treated with a limited drug arsenal; the development of new molecules is therefore a priority. Recent evidence indicates that endoperoxides, including artemisinin and its derivatives, possess antileishmanial activity. Here, 1,2-dioxanes were synthesized with their corresponding tetrahydropyrans lacking the peroxide bridge, to ascertain if this group is a key pharmacophoric requirement for the antileishmanial bioactivity. Newly synthesized compounds were examined in vitro, and their mechanism of action was preliminarily investigated. Three endoperoxides and their corresponding tetrahydropyrans effectively inhibited the growth of Leishmania donovani promastigotes and amastigotes, and iron did not play a significant role in their activation. Further, reactive oxygen species were produced in both endoperoxide- and tetrahydropyran-treated promastigotes. In conclusion, the peroxide group proved not to be crucial for the antileishmanial bioactivity of endoperoxides, under the tested conditions. Our findings reveal the potential of both 1,2-dioxanes and tetrahydropyrans as lead compounds for novel therapies against Leishmania.
Collapse
Affiliation(s)
- Margherita Ortalli
- Unit of Clinical Microbiology, Regional Reference
Centre for Microbiological Emergencies (CRREM), St. Orsola-Malpighi
University Hospital, Via Massarenti 9, 40138 Bologna,
Italy
| | - Stefania Varani
- Unit of Clinical Microbiology, Regional Reference
Centre for Microbiological Emergencies (CRREM), St. Orsola-Malpighi
University Hospital, Via Massarenti 9, 40138 Bologna,
Italy
- Department of Experimental, Diagnostic and Specialty
Medicine, Alma Mater Studiorum - University of Bologna, Via
Massarenti 9, 40138 Bologna, Italy
| | - Giorgia Cimato
- Unit of Clinical Microbiology, Regional Reference
Centre for Microbiological Emergencies (CRREM), St. Orsola-Malpighi
University Hospital, Via Massarenti 9, 40138 Bologna,
Italy
| | - Ruben Veronesi
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
| | - Arianna Quintavalla
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
- Centro Interuniversitario di Ricerca sulla Malaria
(CIRM) - Italian Malaria Network (IMN), University of Milan,
20100 Milan, Italy
| | - Marco Lombardo
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
- Centro Interuniversitario di Ricerca sulla Malaria
(CIRM) - Italian Malaria Network (IMN), University of Milan,
20100 Milan, Italy
| | - Magda Monari
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
| | - Claudio Trombini
- Department of Chemistry “G. Ciamician”,
Alma Mater Studiorum - University of Bologna Via Selmi 2,
40126 Bologna, Italy
- Centro Interuniversitario di Ricerca sulla Malaria
(CIRM) - Italian Malaria Network (IMN), University of Milan,
20100 Milan, Italy
| |
Collapse
|
10
|
Gualandi A, Calogero F, Martinelli A, Quintavalla A, Marchini M, Ceroni P, Lombardo M, Cozzi PG. A supramolecular bifunctional iridium photoaminocatalyst for the enantioselective alkylation of aldehydes. Dalton Trans 2020; 49:14497-14505. [PMID: 33045035 DOI: 10.1039/d0dt02587a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The construction of a hybrid metal-organo-photoredox catalyst based on the conjugation of an imidazolidinone organocatalyst and Ir(ppy)2(bipy) (ppy = 2-phenylpyridine, bipy = bipyridine) is described. The introduction of the desired organocatalyst into the bipyridine moiety is quite modular, allowing the preparation of different hybrid photocatalysts, and is realized though a simple click reaction. The hybrid photocatalysts obtained were employed in the benchmark photoredox alkylation of aldehydes. Remarkably, the conjugation of a first-generation MacMillan catalyst produces an active and stereoselective hybrid photoredox catalyst.
Collapse
Affiliation(s)
- Andrea Gualandi
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Francesco Calogero
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Ada Martinelli
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Arianna Quintavalla
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Marianna Marchini
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Paola Ceroni
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Marco Lombardo
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica "G. Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi 2, 40126, Bologna, Italy.
| |
Collapse
|
11
|
Rosso C, Emma MG, Martinelli A, Lombardo M, Quintavalla A, Trombini C, Syrgiannis Z, Prato M. A Recyclable Chiral 2‐(Triphenylmethyl)pyrrolidine Organocatalyst Anchored to [60]Fullerene. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Cristian Rosso
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Trieste Italy
| | - Marco G. Emma
- Department of Chemistry “G. Ciamician”University of Bologna Bologna Italy
| | - Ada Martinelli
- Department of Chemistry “G. Ciamician”University of Bologna Bologna Italy
| | - Marco Lombardo
- Department of Chemistry “G. Ciamician”University of Bologna Bologna Italy
| | | | - Claudio Trombini
- Department of Chemistry “G. Ciamician”University of Bologna Bologna Italy
- CINMPIS (Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi)University of Bari Bari Italy
| | - Zois Syrgiannis
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Trieste Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Trieste Italy
- Nanobiotechnology LaboratoryCIC biomaGUNE San Sebastiàn Spain
- IkerbasqueBasque Foundation for Science Bilbao Spain
| |
Collapse
|
12
|
Ortalli M, Varani S, Rosso C, Quintavalla A, Lombardo M, Trombini C. Evaluation of synthetic substituted 1,2-dioxanes as novel agents against human leishmaniasis. Eur J Med Chem 2019; 170:126-140. [PMID: 30878827 DOI: 10.1016/j.ejmech.2019.02.070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 11/22/2018] [Revised: 01/29/2019] [Accepted: 02/25/2019] [Indexed: 01/28/2023]
Abstract
The treatment of human leishmaniasis is currently based on few compounds that are highly toxic, expensive and have a high rate of treatment failure. A number of recent studies on new drugs focuses on natural or semi-synthetic compounds. Among them, the endoperoxide artemisinin, extracted from Artemisia annua, and some of its derivatives have shown leishmanicidal activity. In the present work, a series of structurally simple, fully synthetic 1,2-dioxanes were evaluated for in vitro antileishmanial activity against promastigotes of Leishmania donovani; the cytotoxicity for mammalian cells was also assessed. The six most promising compounds in terms of activity and selectivity were further investigated for their antileishmanial activity on the promastigote forms of L. tropica, L. major and L. infantum and against L. donovani amastigotes. The good performance in terms of potency and selectivity makes these six hits promising candidates for a preliminary lead optimization as antileishmanial agents.
Collapse
Affiliation(s)
- M Ortalli
- Alma Mater Studiorum - University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine, Via Massarenti 9, 40138, Bologna, Italy
| | - S Varani
- Alma Mater Studiorum - University of Bologna, Department of Experimental, Diagnostic and Specialty Medicine, Via Massarenti 9, 40138, Bologna, Italy; Unit of Clinical Microbiology, Regional Reference Centre for Microbiological Emergencies (CRREM), St. Orsola-Malpighi University Hospital, Via Massarenti 9, 40138, Bologna, Italy
| | - C Rosso
- Alma Mater Studiorum - University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, 40126, Bologna, Italy
| | - A Quintavalla
- Alma Mater Studiorum - University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, 40126, Bologna, Italy.
| | - M Lombardo
- Alma Mater Studiorum - University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, 40126, Bologna, Italy
| | - C Trombini
- Alma Mater Studiorum - University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, 40126, Bologna, Italy
| |
Collapse
|
13
|
Andronico LA, Chen L, Mirasoli M, Guardigli M, Quintavalla A, Lombardo M, Trombini C, Chiu DT, Roda A. Thermochemiluminescent semiconducting polymer dots as sensitive nanoprobes for reagentless immunoassay. Nanoscale 2018; 10:14012-14021. [PMID: 29995031 PMCID: PMC6065506 DOI: 10.1039/c8nr03092h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Thermochemiluminescence (TCL) is a potentially simple and sensitive detection principle, as the light emission is simply elicited by thermally-triggered decomposition of a molecule to produce a singlet excited-state product. Here we report about TCL semiconductive polymer dots (TCL-Pdots) obtained by doping fluorescent cyano-polyphenylene vinylene (CN-PPV) Pdots with an acridine 1,2-dioxetane derivative. The TCL-Pdots showed remarkable stability over time and minimum leaching of the thermo-responsive species. Furthermore, detectability of TCL-Pdots was improved by taking advantage of both the high number of 1,2-dioxetanes entrapped in each nanoparticle (about 20 molecules per Pdot) and the 5-fold enhancement of TCL emission due to energy transfer from 1,2-dioxetane to the polymer matrix, which itself acted as an energy acceptor. Indeed, upon heating the TCL-Pdots to 110 °C, 1,2-dioxetane decomposes generating an acridanone product in its electronically excited state. The latter transfers its energy to the surrounding CN-PPV chains via the Förster mechanism (φFRET about 80%), resulting in intense yellow light emission (550 nm wavelength). We next conjugated streptavidin onto the surface of these TCL-Pdots and demonstrated their suitability for use in biological studies. In particular, we used TCL-Pdots as labels in a model non-competitive immunoassay for IgG detection, which showed a LOD of 13 nM IgG and a dynamic range extending up to 230 nM. By combining the biocompatibility, brightness and tunability of Pdot fluorescence emission with the thermally-triggered reagentless light generation from TCL 1,2-dioxetanes, a broad panel of ultrabright TCL nanosystems could be designed for a variety of bioscience applications, even in multiplexed formats.
Collapse
Affiliation(s)
- Luca A Andronico
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2, 40126 Bologna, Italy.
| | - Lei Chen
- Department of Chemistry, University of Washington, Seattle, Washington, 98195 USA.
| | - Mara Mirasoli
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2, 40126 Bologna, Italy.
| | - Massimo Guardigli
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2, 40126 Bologna, Italy.
| | - Arianna Quintavalla
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2, 40126 Bologna, Italy.
| | - Marco Lombardo
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2, 40126 Bologna, Italy.
| | - Claudio Trombini
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2, 40126 Bologna, Italy.
| | - Daniel T Chiu
- Department of Chemistry, University of Washington, Seattle, Washington, 98195 USA.
| | - Aldo Roda
- Department of Chemistry "G. Ciamician", University of Bologna Via Selmi 2, 40126 Bologna, Italy.
| |
Collapse
|
14
|
Quintavalla A. Spirolactones: Recent Advances in Natural Products, Bioactive Compounds and Synthetic Strategies. Curr Med Chem 2018; 25:917-962. [DOI: 10.2174/0929867324666171106162259] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 10/09/2017] [Accepted: 10/26/2017] [Indexed: 11/22/2022]
Abstract
Background:
The spirocyclic compounds have always aroused a great interest
because this motif is present as structural core in a number of natural products and bioactive
compounds. In particular, the spirolactone moiety has been recognized in a wide array
of natural and non-natural scaffolds showing a variety of useful pharmacological
properties.
Methods:
Extensive literature search using SciFinder (Databases: CA Plus, CAS Registry,
CAS React, Chemlist, Chemcat and Medline) and Web of Science (Database: Web of
Science Core Collection) was conducted.
Results:
Nowadays, many efforts are being devoted to the discovery of new natural products
containing the promising spirolactone framework and to the disclosure of the potential
bioactivities of these chemical entities. Moreover, the medicinal relevance of many
spirolactones makes these scaffolds attractive targets for the design and development of
innovative and efficient synthetic strategies, enabling the construction of complex and
variably substituted products.
Conclusion:
This review gives an overview on the recent advances in the spirolactones
field, in terms of new compounds isolated from natural sources, recently determined bioactivity
profiles and innovative synthetic approaches. The collected data demonstrate the
key role played by spirolactones in medicinal chemistry and the great attention still devoted
by the scientific community to these compounds.
Collapse
Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum, University of Bologna, Bologna, Italy
| |
Collapse
|
15
|
Persico M, Fattorusso R, Taglialatela-Scafati O, Chianese G, de Paola I, Zaccaro L, Rondinelli F, Lombardo M, Quintavalla A, Trombini C, Fattorusso E, Fattorusso C, Farina B. The interaction of heme with plakortin and a synthetic endoperoxide analogue: new insights into the heme-activated antimalarial mechanism. Sci Rep 2017; 7:45485. [PMID: 28383076 PMCID: PMC5382535 DOI: 10.1038/srep45485] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 02/28/2017] [Indexed: 12/13/2022] Open
Abstract
In the present work we performed a combined experimental and computational study on the interaction of the natural antimalarial endoperoxide plakortin and its synthetic analogue 4a with heme. Obtained results indicate that the studied compounds produce reactive carbon radical species after being reductively activated by heme. In particular, similarly to artemisinin, the formation of radicals prone to inter-molecular reactions should represent the key event responsible for Plasmodium death. To our knowledge this is the first experimental investigation on the reductive activation of simple antimalarial endoperoxides (1,2-dioxanes) by heme and results were compared to the ones previously obtained from the reaction with FeCl2. The obtained experimental data and the calculated molecular interaction models represent crucial tools for the rational optimization of our promising class of low-cost synthetic antimalarial endoperoxides.
Collapse
Affiliation(s)
- Marco Persico
- University of Naples "Federico II", Department of Pharmacy, Via D. Montesano 49, Napoli, 80131, Italy.,Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy
| | - Roberto Fattorusso
- Second University of Naples, Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Via Vivaldi 43, Caserta, 81100, Italy.,Institute of Biostructures and Bioimages (IBB) CNR, Via Mezzocannone 16, Naples, 80134, Italy
| | - Orazio Taglialatela-Scafati
- University of Naples "Federico II", Department of Pharmacy, Via D. Montesano 49, Napoli, 80131, Italy.,Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy
| | - Giuseppina Chianese
- University of Naples "Federico II", Department of Pharmacy, Via D. Montesano 49, Napoli, 80131, Italy.,Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy
| | - Ivan de Paola
- Institute of Biostructures and Bioimages (IBB) CNR, Via Mezzocannone 16, Naples, 80134, Italy
| | - Laura Zaccaro
- Institute of Biostructures and Bioimages (IBB) CNR, Via Mezzocannone 16, Naples, 80134, Italy
| | - Francesca Rondinelli
- University of Naples "Federico II", Department of Pharmacy, Via D. Montesano 49, Napoli, 80131, Italy.,Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy
| | - Marco Lombardo
- Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy.,Alma Mater Studiorum University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, Bologna, 40126, Italy
| | - Arianna Quintavalla
- Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy.,Alma Mater Studiorum University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, Bologna, 40126, Italy
| | - Claudio Trombini
- Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy.,Alma Mater Studiorum University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, Bologna, 40126, Italy
| | - Ernesto Fattorusso
- University of Naples "Federico II", Department of Pharmacy, Via D. Montesano 49, Napoli, 80131, Italy.,Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy
| | - Caterina Fattorusso
- University of Naples "Federico II", Department of Pharmacy, Via D. Montesano 49, Napoli, 80131, Italy.,Italian Malaria Network - Centro Interuniversitario di Ricerca Sulla Malaria (CIRM) Department of Experimental Medicine and Biochemical Science, Via Del Giochetto, Perugia, Italy
| | - Biancamaria Farina
- Institute of Biostructures and Bioimages (IBB) CNR, Via Mezzocannone 16, Naples, 80134, Italy.,Advanced Accelerator Applications, Via Vivaldi 43, Caserta, 81100, Italy
| |
Collapse
|
16
|
Andronico LA, Quintavalla A, Lombardo M, Mirasoli M, Guardigli M, Trombini C, Roda A. Synthesis of 1,2-Dioxetanes as Thermochemiluminescent Labels for Ultrasensitive Bioassays: Rational Prediction of Olefin Photooxygenation Outcome by Using a Chemometric Approach. Chemistry 2016; 22:18156-18168. [DOI: 10.1002/chem.201603765] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/07/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Luca A. Andronico
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Arianna Quintavalla
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Mara Mirasoli
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Massimo Guardigli
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Claudio Trombini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Aldo Roda
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
17
|
Emma MG, Lombardo M, Trombini C, Quintavalla A. The Organocatalytic α-Fluorination of Chiral γ-Nitroaldehydes: the Challenge of Facing the Construction of a Quaternary Fluorinated Stereocenter. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600378] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Marco Giuseppe Emma
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Claudio Trombini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Arianna Quintavalla
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
18
|
Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum-University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Bandini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum-University of Bologna; Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
19
|
Cerisoli L, Lombardo M, Trombini C, Quintavalla A. The First Enantioselective Organocatalytic Synthesis of 3-Spiro-α-Alkylidene-γ-Butyrolactone Oxindoles. Chemistry 2016; 22:3865-72. [DOI: 10.1002/chem.201504157] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Lucia Cerisoli
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Claudio Trombini
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Arianna Quintavalla
- Department of Chemistry ''G. Ciamician''; Alma Mater Studiorum; University of Bologna; Via Selmi 2 40126 Bologna Italy
| |
Collapse
|
20
|
Sonawane DP, Corbett Y, Dhavale DD, Taramelli D, Trombini C, Quintavalla A, Lombardo M. D-Glucose-Derived 1,2,4-Trioxepanes: Synthesis, Conformational Study, and Antimalarial Activity. Org Lett 2015; 17:4074-7. [PMID: 26237035 DOI: 10.1021/acs.orglett.5b01996] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
New enantiomerically pure 1,2,4-trioxepanes 10a,b/11a,b were synthesized from D-glucose. Their conformational behavior was studied by low-temperature NMR and substantiated by DFT calculations. On evaluation of in vitro antimalarial activity, the adamantyl derivative 11b showed IC50 values in the low micromolar range, particularly against the W2 chloroquine-resistant Plasmodium falciparum strain (IC50 = 0.15 ± 0.12 μM).
Collapse
Affiliation(s)
- D P Sonawane
- †Department of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University of Pune), Pune 411 007, India
| | - Y Corbett
- ‡Dipartimento di Scienze Farmacologiche e Biomolecolari, Università di Milano, Via Pascal 36, 20133 Milano, Italy
| | - D D Dhavale
- †Department of Chemistry, Garware Research Centre, Savitribai Phule Pune University (formerly University of Pune), Pune 411 007, India
| | - D Taramelli
- ‡Dipartimento di Scienze Farmacologiche e Biomolecolari, Università di Milano, Via Pascal 36, 20133 Milano, Italy
| | - C Trombini
- #Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, via Selmi, 2, I-40126 Bologna, Italy
| | - A Quintavalla
- #Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, via Selmi, 2, I-40126 Bologna, Italy
| | - M Lombardo
- #Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, via Selmi, 2, I-40126 Bologna, Italy
| |
Collapse
|
21
|
Monari M, Montroni E, Nitti A, Lombardo M, Trombini C, Quintavalla A. Inside Cover: Highly Stereoselective [4+2] and [3+2] Spiroannulations of 2-(2-Oxoindolin-3-ylidene)acetic Esters Catalyzed by Bifunctional Thioureas (Chem. Eur. J. 31/2015). Chemistry 2015. [DOI: 10.1002/chem.201590138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
22
|
Monari M, Montroni E, Nitti A, Lombardo M, Trombini C, Quintavalla A. Highly stereoselective [4+2] and [3+2] spiroannulations of 2-(2-oxoindolin-3-ylidene)acetic esters catalyzed by bifunctional thioureas. Chemistry 2015; 21:11038-49. [PMID: 26032428 DOI: 10.1002/chem.201500676] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [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: 02/16/2015] [Indexed: 11/11/2022]
Abstract
A new Michael-Michael cascade reaction between 2-(2-oxoindolin-3-ylidene)acetic esters 1 and nitroenoates 2, catalyzed by bifunctional thioureas, is investigated. The combination of the two Michael reactions results in a novel and facile [4+2] or [3+2] spiroannulation process, which is characterized by the following features: 1) two carbon-carbon bonds and four stereocenters, including a quaternary spiro carbon, are formed under mild conditions; 2) an unprecedented and stereochemically defined substitution pattern on the spirocarbocyclic unit is obtained; 3) the double-bond configuration of the donor-acceptor nitroenoate 2 determines the absolute configuration of the spiro center, whereas the remaining stereocenters are formed under control of the catalyst. The effect on the final stereochemical outcome of structural variations of each starting material, catalyst, and experimental conditions is analyzed in detail. In particular, the use of specifically designed chiral nitroenoates enables diverse polyfunctional spirocyclohexane derivatives containing six consecutive stereogenic centers to be constructed. To our knowledge, this is the first asymmetric organocatalytic strategy enabling both five- and six-membered β-nitro spirocarbocyclic oxindoles.
Collapse
Affiliation(s)
- Magda Monari
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Elisa Montroni
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Andrea Nitti
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Marco Lombardo
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Claudio Trombini
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy)
| | - Arianna Quintavalla
- Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna (Italy).
| |
Collapse
|
23
|
Sonawane DP, Persico M, Corbett Y, Chianese G, Di Dato A, Fattorusso C, Taglialatela-Scafati O, Taramelli D, Trombini C, Dhavale DD, Quintavalla A, Lombardo M. New antimalarial 3-methoxy-1,2-dioxanes: optimization of cellular pharmacokinetics and pharmacodynamics properties by incorporation of amino and N-heterocyclic moieties at C4. RSC Adv 2015. [DOI: 10.1039/c5ra10785g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new series of 3-methoxy-1,2-dioxanes containing an amino moiety at C4 was synthesized, displaying nanomolar antimalarial activity without being cytotoxic.
Collapse
|
24
|
Di Fusco M, Quintavalla A, Lombardo M, Guardigli M, Mirasoli M, Trombini C, Roda A. Organically modified silica nanoparticles doped with new acridine-1,2-dioxetane analogues as thermochemiluminescence reagentless labels for ultrasensitive immunoassays. Anal Bioanal Chem 2014; 407:1567-76. [DOI: 10.1007/s00216-014-8406-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/04/2014] [Accepted: 12/10/2014] [Indexed: 12/25/2022]
|
25
|
|
26
|
Lombardo M, Cerisoli L, Manoni E, Montroni E, Quintavalla A, Trombini C. Properties and Reactivity of Conformationally Constrained Bicyclic Diarylprolinol Silyl Ethers as Organocatalysts. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402732] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
27
|
Lombardo M, Sonawane DP, Quintavalla A, Trombini C, Dhavale DD, Taramelli D, Corbett Y, Rondinelli F, Fattorusso C, Persico M, Taglialatela-Scafati O. Optimized Synthesis and Antimalarial Activity of 1,2-Dioxane-4-carboxamides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301394] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
28
|
Quintavalla A, Lanza F, Montroni E, Lombardo M, Trombini C. Organocatalytic Conjugate Addition of Nitroalkanes to 3-Ylidene Oxindoles: A Stereocontrolled Diversity Oriented Route to Oxindole Derivatives. J Org Chem 2013; 78:12049-64. [DOI: 10.1021/jo402099p] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Francesco Lanza
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Elisa Montroni
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
- Consorzio Interuniversitario “CINMPIS”, V. Orabona 4, 70125 Bari, Italy
| | - Marco Lombardo
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| | - Claudio Trombini
- Department of Chemistry
‘‘G. Ciamician’’, Alma Mater Studiorum, University of Bologna, Via Selmi, 2, I-40126 Bologna, Italy
| |
Collapse
|
29
|
Di Fusco M, Quintavalla A, Trombini C, Lombardo M, Roda A, Guardigli M, Mirasoli M. Preparation and Characterization of Thermochemiluminescent Acridine-Containing 1,2-Dioxetanes as Promising Ultrasensitive Labels in Bioanalysis. J Org Chem 2013; 78:11238-46. [DOI: 10.1021/jo401683r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Massimo Di Fusco
- Advanced
Applications in Mechanical Engineering and Materials Technology Interdepartmental
Center for Industrial Research, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Arianna Quintavalla
- Department
of Chemistry ‘‘G. Ciamician’’, Alma Mater
Studiorum, University of Bologna, Bologna, Italy
| | - Claudio Trombini
- Department
of Chemistry ‘‘G. Ciamician’’, Alma Mater
Studiorum, University of Bologna, Bologna, Italy
| | - Marco Lombardo
- Department
of Chemistry ‘‘G. Ciamician’’, Alma Mater
Studiorum, University of Bologna, Bologna, Italy
| | - Aldo Roda
- Department
of Chemistry ‘‘G. Ciamician’’, Alma Mater
Studiorum, University of Bologna, Bologna, Italy
| | - Massimo Guardigli
- Department
of Chemistry ‘‘G. Ciamician’’, Alma Mater
Studiorum, University of Bologna, Bologna, Italy
| | - Mara Mirasoli
- Department
of Chemistry ‘‘G. Ciamician’’, Alma Mater
Studiorum, University of Bologna, Bologna, Italy
| |
Collapse
|
30
|
Bottoni A, Lombardo M, Miscione GP, Montroni E, Quintavalla A, Trombini C. Electrosteric Activation by using Ion-Tagged Prolines: A Combined Experimental and Computational Investigation. ChemCatChem 2013. [DOI: 10.1002/cctc.201300399] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
31
|
Quintavalla A, Lombardo M, Sanap SP, Trombini C. A New Henry/Michael/Retro-Henry/Henry Domino Sequence Promoted by Bifunctional Organocatalysts. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201135] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
32
|
Roda A, Di Fusco M, Quintavalla A, Guardigli M, Mirasoli M, Lombardo M, Trombini C. Dioxetane-Doped Silica Nanoparticles as Ultrasensitive Reagentless Thermochemiluminescent Labels for Bioanalytics. Anal Chem 2012; 84:9913-9. [DOI: 10.1021/ac302306u] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Aldo Roda
- Department
of Chemistry “G. Ciamician”,
Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna,
Italy
| | - Massimo Di Fusco
- Department
of Chemistry “G. Ciamician”,
Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna,
Italy
| | - Arianna Quintavalla
- Department
of Chemistry “G. Ciamician”,
Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna,
Italy
| | - Massimo Guardigli
- Department
of Chemistry “G. Ciamician”,
Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna,
Italy
| | - Mara Mirasoli
- Department
of Chemistry “G. Ciamician”,
Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna,
Italy
| | - Marco Lombardo
- Department
of Chemistry “G. Ciamician”,
Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna,
Italy
| | - Claudio Trombini
- Department
of Chemistry “G. Ciamician”,
Alma Mater Studiorum, University of Bologna, Via Selmi 2, 40126 Bologna,
Italy
| |
Collapse
|
33
|
Montroni E, Lombardo M, Quintavalla A, Trombini C, Gruttadauria M, Giacalone F. A Liquid-Liquid Biphasic Homogeneous Organocatalytic Aldol Protocol Based on the Use of a Silica Gel Bound Multilayered Ionic Liquid Phase. ChemCatChem 2012. [DOI: 10.1002/cctc.201200125] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
34
|
Chiarucci M, Lombardo M, Trombini C, Quintavalla A. Enantioselective Conjugate Addition of Nitroalkanes to Alkylidenemalonates Promoted by Thiourea-Based Bifunctional Organocatalysts. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100732] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
35
|
Persico M, Quintavalla A, Rondinelli F, Trombini C, Lombardo M, Fattorusso C, Azzarito V, Taramelli D, Parapini S, Corbett Y, Chianese G, Fattorusso E, Taglialatela-Scafati O. A new class of antimalarial dioxanes obtained through a simple two-step synthetic approach: rational design and structure-activity relationship studies. J Med Chem 2011; 54:8526-40. [PMID: 22054038 DOI: 10.1021/jm201056j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A new series of simple endoperoxides, characterized by a 3-methoxy-1,2-dioxane scaffold, was designed on the basis of a previously developed pharmacophore. Through a simplified and versatile scheme of synthesis, which utilizes cheap and commercially available starting materials, it was possible to obtain several structurally and stereochemically different compounds that were tested against P. falciparum. Most of compounds showed antimalarial activity in the low micromolar range and no cellular toxicity, all being significantly more active on chloroquine resistant (CQ-R) than on chloroquine sensitive (CQ-S) strains. Resulting structure-activity relationships were analyzed by means of experimental and computational techniques, validating our design rationale and tailoring it for the new scaffold. Our study demonstrated that according to the hypothesized mechanism of action, the antimalarial activity can be improved through rational structural modifications, paving the way for the development of new simplified antimalarial endoperoxides.
Collapse
Affiliation(s)
- Marco Persico
- Dipartimento di Chimica delle Sostanze Naturali, Università di Napoli Federico II, Via D. Montesano, 49 I-80131 Napoli, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Montroni E, Sanap SP, Lombardo M, Quintavalla A, Trombini C, Dhavale DD. A New Robust and Efficient Ion-Tagged Proline Catalyst Carrying an Amide Spacer for the Asymmetric Aldol Reaction. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100595] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
37
|
Galletti P, Cocuzza CEA, Pori M, Quintavalla A, Musumeci R, Giacomini D. Antibacterial Agents and Cystic Fibrosis: Synthesis and Antimicrobial Evaluation of a Series of N-Thiomethylazetidinones. ChemMedChem 2011; 6:1919-27. [DOI: 10.1002/cmdc.201100282] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 07/07/2011] [Indexed: 01/29/2023]
|
38
|
Galletti P, Emer E, Gucciardo G, Quintavalla A, Pori M, Giacomini D. Chemoenzymatic synthesis of (2S)-2-arylpropanols through a dynamic kinetic resolution of 2-arylpropanals with alcohol dehydrogenases. Org Biomol Chem 2010; 8:4117-23. [PMID: 20625608 DOI: 10.1039/c005098a] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We applied Horse Liver Alcohol Dehydrogenase (HLADH) to the enantioselective synthesis of six (2S)-2-arylpropanols, useful intermediates in the synthesis of Profens. The influence of substrate structure and reaction conditions on yields and enantioselectivity were investigated. The high yields and high enantioselectivity towards the (S)-enantiomer obtained in the bioreduction of 2-arylpropionic aldehydes, clearly indicate the achievement of a DKR process through a combination of an enzyme-catalyzed kinetic reduction with a chemical base-catalyzed racemization of the unreacted aldehydes. The racemization step is represented by the keto-enol equilibrium of the aldehyde and can be controlled by modulating pH and reaction conditions.
Collapse
Affiliation(s)
- Paola Galletti
- Department of Chemistry G. Ciamician, University of Bologna, Via Selmi 2, Bologna, I-40126, Italy.
| | | | | | | | | | | |
Collapse
|
39
|
|
40
|
Galletti P, Quintavalla A, Ventrici C, Giannini G, Cabri W, Penco S, Gallo G, Vincenti S, Giacomini D. Azetidinones as zinc-binding groups to design selective HDAC8 inhibitors. ChemMedChem 2010; 4:1991-2001. [PMID: 19821480 DOI: 10.1002/cmdc.200900309] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
2-Azetidinones, commonly known as beta-lactams, are well-known heterocyclic compounds. Herein we described the synthesis and biological evaluation of a series of novel beta-lactams. In vitro inhibition assays against HDAC isoforms showed an interesting isoform-selectivity of these compounds towards HDAC6 and HDAC8. The isoform selectivity changed in response to modification of the azetidinone-ring nitrogen atom substituent. The presence of an N-thiomethyl group is a prerequisite for the activity of these compounds in the micromolar range towards HDAC8.
Collapse
Affiliation(s)
- Paola Galletti
- Dipartimento di Chimica G. Ciamician, Università of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Galletti P, Quintavalla A, Ventrici C, Giannini G, Cabri W, Giacomini D. 2-Azetidinones: synthesis of new bis(indolyl)butyl-β-lactams. NEW J CHEM 2010. [DOI: 10.1039/c0nj00463d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
42
|
|
43
|
Pavanetto M, Zarpellon A, Giacomini D, Galletti P, Quintavalla A, Cainelli G, Folda A, Scutari G, Deana R. Inhibitory effect by new monocyclic 4-alkyliden-beta-lactam compounds on human platelet activation. Platelets 2009; 18:357-64. [PMID: 17654305 DOI: 10.1080/09537100601100796] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
In the present study some new beta-lactam compounds were screened for their ability to inhibit human platelet activation. In particular four compounds differing in the group on the nitrogen atom of the azetidinone ring were investigated. A beta-lactam having an ethyl 2-carboxyethanoate N-bound group was demonstrated to inhibit, in the micromolar range, both the Ca(2+) release from endoplasmic reticulum, induced either by thrombin or by the ATPase inhibitor thapsigargin, and the Ca(2+) entry in platelets driven by emptying the endoplasmic reticulum. The compound also inhibited the platelet aggregation induced by a variety of physiological agonists including ADP, collagen, thrombin and thrombin mimetic peptide TRAP. The beta-lactam reduced the phosphorylation of pleckstrin (apparent MW 47 kDa), elicited by thrombin but not by the protein kinase C activator phorbol ester. Accordingly it did not significantly affect the aggregation evoked by phorbol ester or Ca(2+) ionophore. It was concluded that the beta-lactam likely exerts its anti-platelet-activating action by hampering the agonist induced cellular Ca(2+) movements. The beta-lactam concentration, which significantly inhibited platelet activation, only negligibly affected the cellular viability. Even if it is still premature to draw definitive conclusions, the present results suggest that this new compound might constitute a tool of potential clinical interest and the starting-point for the synthesis of new more beneficial anti-thrombotic compounds.
Collapse
|
44
|
Adinolfi M, Giacomini D, Iadonisi A, Quintavalla A, Valerio S. Synthesis of the Mannopeptimycin Disaccharide and Its Conjugation with 4-Alkylidene-β-lactams. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701159] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
45
|
Giacomini D, Galletti P, Quintavalla A, Gucciardo G, Paradisi F. Highly efficient asymmetric reduction of arylpropionic aldehydes by horse liver alcohol dehydrogenase through dynamic kinetic resolution. Chem Commun (Camb) 2007:4038-40. [PMID: 17912408 DOI: 10.1039/b712290j] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enantioselective synthesis of (2S)-2-phenylpropanol and (2S)-2-(4-iso-butylphenyl)propanol ((S)-Ibuprofenol) has been achieved by means of Horse Liver Alcohol Dehydrogenase (HLADH) in buffered aqueous solution or buffered organic solvent mixtures; under the reaction conditions, a dynamic kinetic resolution (DKR) process was realized with good reaction yields and enantiomeric ratios.
Collapse
Affiliation(s)
- Daria Giacomini
- Department of Chemistry G. Ciamician, Alma Mater Studiorum University of Bologna, Via Selmi 2, 40126, Bologna, Italy.
| | | | | | | | | |
Collapse
|
46
|
|
47
|
|
48
|
Broccolo F, Cainelli G, Caltabiano G, Cocuzza CEA, Fortuna CG, Galletti P, Giacomini D, Musumarra G, Musumeci R, Quintavalla A. Design, Synthesis, and Biological Evaluation of 4-Alkyliden-beta Lactams: New Products with Promising Antibiotic Activity Against Resistant Bacteria. J Med Chem 2006; 49:2804-11. [PMID: 16640341 DOI: 10.1021/jm0580510] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The design, synthesis, and antibacterial activity of 4-alkyliden-azetidin-2-ones as new antimicrobial agents against multidrug-resistant pathogens is reported. 4-Alkyliden-azetidin-2-ones were easily obtained using an original protocol starting from 4-acetoxy-azetidinones and diazoesters. Parent compounds were further elaborated to obtain a small library of 4-alkylidene derivatives. A molecular modeling approach using GRID descriptors based on the concept of VRS identified attractive drug candidates and contributed to the rationalization of functional group effects in QSARs. The in vitro antibacterial activity of the new agents was evaluated against 43 recent clinical isolates of antibiotic-susceptible and -resistant Gram-positive and Gram-negative pathogens by determining their minimum inhibitory concentrations (MICs). The most active compound showed MIC values ranging from 0.25 to 32 mg/L against some of the bacterial species tested. Interestingly, some compounds demonstrated similar activity against methicillin-susceptible and -resistant strains of Staphylococcus aureus suggesting possible alternative mechanisms of action of these agents, supported by citotoxicity and preliminary scanning electron microscopy studies.
Collapse
Affiliation(s)
- Francesco Broccolo
- Department of Clinical Medicine, Prevention and Biotechnology, University of Milano-Bicocca, Via Cadore 48, I-20052 Monza, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Adinolfi M, Galletti P, Giacomini D, Iadonisi A, Quintavalla A, Ravidà A. Toward Novel Glyconjugates: Efficient Synthesis of Glycosylated 4-Alkylidene--lactams. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500665] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
50
|
Cainelli G, Galletti P, Garbisa S, Giacomini D, Sartor L, Quintavalla A. 4-Alkyliden-β-lactams conjugated to polyphenols: Synthesis and inhibitory activity. Bioorg Med Chem 2005; 13:6120-32. [PMID: 16084102 DOI: 10.1016/j.bmc.2005.06.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Revised: 06/09/2005] [Accepted: 06/13/2005] [Indexed: 10/25/2022]
Abstract
A series of compounds combining the beta-lactam and polyphenol scaffold have been prepared and evaluated for inhibition of human leukocyte elastase and matrix metallo-proteases MMP-2 and MMP-9. The design of these compounds has been based on the 'overlapping-type' strategy where two pharmacophores are linked in a single molecule. The most powerful compound against elastase was an N-galloyl-4-alkyliden beta-lactam, [3-[1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-oxo-1-(3,4,5-tris-benzyloxy-benzoyl)-azetidin-2-ylidene]-acetic acid ethylester, with an IC50 of 0.5 microM; while the most powerful against MMP-2 was a 4-alkyliden beta-lactam arylated on the C-3 hydroxy side chain (3,5-bis-benzyloxy-4-hydroxy-benzoic acid 1-(2-benzyloxycarbonylmethylene-4-oxo-azetidin-3-yl)-ethyl ester) with an IC50 of 4 microM. Of the total 35 compounds tested, high levels of inhibition of elastase and of MMPs were separately exerted by distinct molecules.
Collapse
Affiliation(s)
- Gianfranco Cainelli
- Department of Chemistry G. Ciamician, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | | | | | | | | | | |
Collapse
|