1
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Miyabe K, Ishitobi A, Hiyama K, Kubotani F. Moment Analysis Method for Measurement of Reaction Equilibrium and Rate Constants by Using High-Performance Liquid Chromatography. Anal Chem 2024; 96:4553-4561. [PMID: 38457369 DOI: 10.1021/acs.analchem.3c05387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
The moment analysis method was developed for the determination of association equilibrium constant (KA) and association (ka) and dissociation (kd) rate constants of intermolecular interactions between solute and ligand molecules. They are accurately determined by using moment equations from elution peak profiles because they are measured by using high-performance liquid chromatography (HPLC) under preferable conditions that neither immobilization nor chemical modification (i.e., fluorescence labeling) of solute and ligand molecules is required. To demonstrate the effectiveness of the method, it was applied to the inclusion complex formation system between dibenzo-18-crown-6 (DB18C6) and alkaline earth metal cations, i.e., Mg2+, Ca2+, and Sr2+, as a concrete example. Because the diameter of the three metal cations is smaller than that of the inner cavity of DB18C6, the values of KA, ka, and kd were analytically determined by assuming the stoichiometry of 1:1 between DB18C6 and the metal cation. They reflected the influence of the difference in the size between the inner cavity of DB18C6 and the metal cations on the inclusion complex formation. It seems that the moment analysis method based on HPLC separation is effective for the multifaceted analysis of chemical reactions because some characteristics of the method are different from those of other conventional methods. It must contribute to the dissemination of an opportunity for the study of chemical reactions to many researchers because of the versatility of HPLC.
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Affiliation(s)
- Kanji Miyabe
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Amane Ishitobi
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Kanoko Hiyama
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Fuzuki Kubotani
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
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2
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Sharma V, Madia VN, Tudino V, Nguyen JV, Debnath A, Messore A, Ialongo D, Patacchini E, Palenca I, Basili Franzin S, Seguella L, Esposito G, Petrucci R, Di Matteo P, Bortolami M, Saccoliti F, Di Santo R, Scipione L, Costi R, Podust LM. Miconazole-like Scaffold is a Promising Lead for Naegleria fowleri-Specific CYP51 Inhibitors. J Med Chem 2023; 66:17059-17073. [PMID: 38085955 PMCID: PMC10758121 DOI: 10.1021/acs.jmedchem.3c01898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/29/2023]
Abstract
Developing drugs for brain infection by Naegleria fowleri is an unmet medical need. We used a combination of cheminformatics, target-, and phenotypic-based drug discovery methods to identify inhibitors that target an essential N. fowleri enzyme, sterol 14-demethylase (NfCYP51). A total of 124 compounds preselected in silico were tested against N. fowleri. Nine primary hits with EC50 ≤ 10 μM were phenotypically identified. Cocrystallization with NfCYP51 focused attention on one primary hit, miconazole-like compound 2a. The S-enantiomer of 2a produced a 1.74 Å cocrystal structure. A set of analogues was then synthesized and evaluated to confirm the superiority of the S-configuration over the R-configuration and the advantage of an ether linkage over an ester linkage. The two compounds, S-8b and S-9b, had an improved EC50 and KD compared to 2a. Importantly, both were readily taken up into the brain. The brain-to-plasma distribution coefficient of S-9b was 1.02 ± 0.12, suggesting further evaluation as a lead for primary amoebic meningoencephalitis.
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Affiliation(s)
- Vandna Sharma
- Skaggs
School of Pharmacy and Pharmaceutical Sciences, Center for Discovery
and Innovation in Parasitic Diseases, University
of California San Diego, La Jolla, California 92093, United States
| | - Valentina Noemi Madia
- Dipartimento
di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci
Bolognetti, “Sapienza” Università
di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Valeria Tudino
- Dipartimento
di Biotecnologie, Università degli
Studi di Siena, Chimica e Farmacia via Aldo Moro 2, Siena 53100, Italy
| | - Jennifer V. Nguyen
- Skaggs
School of Pharmacy and Pharmaceutical Sciences, Center for Discovery
and Innovation in Parasitic Diseases, University
of California San Diego, La Jolla, California 92093, United States
| | - Anjan Debnath
- Skaggs
School of Pharmacy and Pharmaceutical Sciences, Center for Discovery
and Innovation in Parasitic Diseases, University
of California San Diego, La Jolla, California 92093, United States
| | - Antonella Messore
- Dipartimento
di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci
Bolognetti, “Sapienza” Università
di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Davide Ialongo
- Dipartimento
di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci
Bolognetti, “Sapienza” Università
di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Elisa Patacchini
- Dipartimento
di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci
Bolognetti, “Sapienza” Università
di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Irene Palenca
- Department
of Physiology and Pharmacology “V. Erspamer”, “Sapienza″ Università di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Silvia Basili Franzin
- Department
of Physiology and Pharmacology “V. Erspamer”, “Sapienza″ Università di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Luisa Seguella
- Department
of Physiology and Pharmacology “V. Erspamer”, “Sapienza″ Università di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Giuseppe Esposito
- Department
of Physiology and Pharmacology “V. Erspamer”, “Sapienza″ Università di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Rita Petrucci
- Dipartimento
di Scienze di Base e Applicate per l’Ingegneria, “Sapienza” Università di Roma, Via Castro Laurenziano 7, Rome 00161, Italy
| | - Paola Di Matteo
- Dipartimento
di Scienze di Base e Applicate per l’Ingegneria, “Sapienza” Università di Roma, Via Castro Laurenziano 7, Rome 00161, Italy
| | - Martina Bortolami
- Dipartimento
di Scienze di Base e Applicate per l’Ingegneria, “Sapienza” Università di Roma, Via Castro Laurenziano 7, Rome 00161, Italy
| | - Francesco Saccoliti
- D3 PharmaChemistry, Italian
Institute of Technology, Via Morego 30, Genova 16163, Italy
| | - Roberto Di Santo
- Dipartimento
di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci
Bolognetti, “Sapienza” Università
di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Luigi Scipione
- Dipartimento
di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci
Bolognetti, “Sapienza” Università
di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Roberta Costi
- Dipartimento
di Chimica e Tecnologie del Farmaco, Istituto Pasteur-Fondazione Cenci
Bolognetti, “Sapienza” Università
di Roma, p.le Aldo Moro 5, Rome I-00185, Italy
| | - Larissa M. Podust
- Skaggs
School of Pharmacy and Pharmaceutical Sciences, Center for Discovery
and Innovation in Parasitic Diseases, University
of California San Diego, La Jolla, California 92093, United States
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3
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Sadutto D, Guglielmi P, Carradori S, Secci D, Cirilli R. Kinetic Study on the Base-Catalyzed Imine-Enamine Tautomerism of a Chiral Biologically Active Isoxazoline Derivative by HPLC on Amylose Tris(3,5-dimethylphenylcarbamate) Chiral Stationary Phase. Molecules 2023; 28:6518. [PMID: 37764294 PMCID: PMC10538074 DOI: 10.3390/molecules28186518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/29/2023] Open
Abstract
Isoxazoline is a nitrogen- and oxygen-containing five-membered heterocyclic scaffold with diverse biological profiles such as antimicrobial, fungicidal, anticancer, antiviral, analgesic and anti-inflammatory activity. Accordingly, the use of this peculiar structural framework in drug discovery is a successful strategy for the development of new drug candidates. Here, a chiral saccharin/isoxazoline hybrid was considered to investigate the tendency of the imine moiety of the heterocyclic ring to tautomerize to the enamine form in the presence of a basic catalyst. The pseudo-first-order rate constants for the base-catalyzed tautomerization process were measured in different solvents and at different temperatures by off-column kinetic experiments based on the amylose (3,5-dimethylphenylcarbamate)-type chiral stationary phase. The kinetic results obtained in this study may be a useful aid in the perspective of designing experimental conditions to control the stereointegrity of these types of pharmacologically active compounds and drive their synthesis toward the preferred, imine or enamine, tautomer.
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Affiliation(s)
- Daniele Sadutto
- Centre for the Control and Evaluation of Medicines, Chemical Medicines Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy;
| | - Paolo Guglielmi
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (P.G.); (D.S.)
| | - Simone Carradori
- Department of Pharmacy, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Daniela Secci
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (P.G.); (D.S.)
| | - Roberto Cirilli
- Centre for the Control and Evaluation of Medicines, Chemical Medicines Unit, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy;
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4
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Inhibition of Leishmania infantum Trypanothione Reductase by New Aminopropanone Derivatives Interacting with the NADPH Binding Site. Molecules 2023; 28:molecules28010338. [PMID: 36615531 PMCID: PMC9823735 DOI: 10.3390/molecules28010338] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/15/2022] [Accepted: 12/28/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND As a result of the paucity of treatment, Leishmaniasis continues to provoke about 60,000 deaths every year worldwide. New molecules are needed, and drug discovery research is oriented toward targeting proteins crucial for parasite survival. Among them, trypanothione reductase (TR) is of remarkable interest owing to its vital role in Leishmania species protozoan parasite life. Our previously identified compound 1 is a novel chemotype endowed with a unique mode of TR inhibition thanks to its binding to a formerly unknown but druggable site at the entrance of the NADPH binding cavity, absent in human glutathione reductase (hGR). METHODS We designed and synthesized new 3-amino-1-arylpropan-1-one derivatives structurally related to compound 1 and evaluated their potential inhibition activity on TR from Leishmania infantum (LiTR). Cluster docking was performed to assess the binding poses of the compounds. RESULTS The newly synthesized compounds were screened at a concentration of 100 μM in in vitro assays and all of them proved to be active with residual activity percentages lower than 75%. CONCLUSIONS Compounds 2a and 2b were the most potent inhibitors found, suggesting that an additional aromatic ring might be promising for enzymatic inhibition. Further structure-activity relationships are needed to optimize our compounds activity.
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5
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A Compendium of the Principal Stationary Phases Used in Hydrophilic Interaction Chromatography: Where Have We Arrived? SEPARATIONS 2022. [DOI: 10.3390/separations10010022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Hydrophilic interaction liquid chromatography (HILIC) today is a well-known and largely applied technique to analyse polar compounds such as pharmaceuticals, metabolites, proteins, peptides, amino acids, oligonucleotides, and carbohydrates. Due to the large number of stationary phases employed for HILIC applications, this review aims to help the reader in choosing a proper stationary phase, which often represents the critical point for the success of a separation. A great offer is present for achiral applications in contrast to the chiral phases developed for HILIC enantioseparations. In the last case, up-to-date solutions are presented.
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6
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Arnaboldi S, Grecchi S, Vaghi L, Penoni A, Scapinello L, Buzzi IF, Cirilli R, Pierini M, Benincori T, Mussini PR. Trópos
and
Átropos
Biindole Chiral Electroactive Monomers: A Voltammetry and HPLC Comparative Insight. ChemElectroChem 2022. [DOI: 10.1002/celc.202100903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Serena Arnaboldi
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Sara Grecchi
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Luca Vaghi
- Dipartimento di Scienza dei Materiali Università degli Studi di Milano-Bicocca Via Cozzi 55 20125 Milano Italy
| | - Andrea Penoni
- Dipartimento di Scienza e Alta Tecnologia Università degli Studi dell'Insubria Via Valleggio 11 22100 Como Italy
| | - Luca Scapinello
- Dipartimento di Scienza e Alta Tecnologia Università degli Studi dell'Insubria Via Valleggio 11 22100 Como Italy
| | - Ivo Franco Buzzi
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Roberto Cirilli
- Centro Nazionale per il Controllo e la Valutazione dei Farmaci Istituto Superiore di Sanita' Viale Regina Elena 299 00161 Roma Italy
| | - Marco Pierini
- Dipartimento di Chimica e Tecnologie del Farmaco Università degli Studi di Roma “La Sapienza” Piazzale Aldo Moro 5 00185 Roma Italy
| | - Tiziana Benincori
- Dipartimento di Scienza e Alta Tecnologia Università degli Studi dell'Insubria Via Valleggio 11 22100 Como Italy
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7
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Chalifoux WA, Sitaula P, Malone RJ, Longhi G, Abbate S, Gualtieri E, Lucotti A, Tommasini M, Franzini R, Villani C, Catalano VJ. π‐Extended Helical Nanographenes: Synthesis and Photophysical Properties of Naphtho[1,2‐a]pyrenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wesley A. Chalifoux
- University of Nevada, Reno Chemistry 1664 N. Virginia StreetDepartment of Chemistry, MS216 89557 Reno UNITED STATES
| | | | | | - Giovanna Longhi
- Università degli Studi di Brescia Dipartimento di Medicina Molecolare e Traslazionale: Universita degli Studi di Brescia Dipartimento di Medicina Molecolare e Traslazionale Dipartimento di Medicina Molecolare e Traslazionale ITALY
| | - Sergio Abbate
- Università degli Studi di Brescia Dipartimento di Medicina Molecolare e Traslazionale: Universita degli Studi di Brescia Dipartimento di Medicina Molecolare e Traslazionale Dipartimento di Medicina Molecolare e Traslazionale ITALY
| | - Eva Gualtieri
- Politecnico di Milano Dipartimento di Chimica Materiali e Ingegneria Chimica Giulio Natta Materiali e Ingegneria Chimica "G. Natta" ITALY
| | - Andrea Lucotti
- Politecnico di Milano Dipartimento di Chimica Materiali e Ingegneria Chimica Giulio Natta Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta" ITALY
| | - Matteo Tommasini
- Politecnico di Milano Dipartimento di Chimica Materiali e Ingegneria Chimica Giulio Natta Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta" ITALY
| | - Roberta Franzini
- University of Rome La Sapienza Department of Chemistry: Universita degli Studi di Roma La Sapienza Dipartimento di Chimica Dipartimento di Chimica e Tecnologie del Farmaco ITALY
| | - Claudio Villani
- University of Rome: Universita degli Studi di Roma La Sapienza Dipartimento di Chimica e Tecnologie del Farmaco ITALY
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8
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Buonsenso F, Madio S, Ciogli A, Siani G, Pierini M. On-column quantification of amino functionalities bonded to solid porous matrices packed within high performance liquid chromatography columns. J Chromatogr A 2021; 1651:462284. [PMID: 34116269 DOI: 10.1016/j.chroma.2021.462284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 11/29/2022]
Abstract
Stationary phases (SPs) based on silica matrices functionalized with amino groups linked to their surface through alkyl chains of various length have found remarkable success in performing HILIC separations, showing really effective resolution towards a wide typology of compounds of biological interest, such as carbohydrates, nucleosides, purine and pyrimidine bases. Recently, we developed an operationally simple procedure, named DNBA-M, non-destructive for the analysed SP, designed to quantify the density of basic groups (typically amino groups) chemically bonded to the surface of porous solids. In the present study the DNBA-M procedure has been suitably modified to allow the quantification of any typology of amino groups present on silica matrices packed into HPLC columns. The new approach, named OC-DNBA-M, has been successfully validated through analysis of two HPLC columns packed with aminopropyl-silica matrices. Afterwards, it was also demonstrated as the OC-DNBA-M procedure may allow the effective and in-depth analysis of the structural composition characterizing SPs packed inside HPLC columns, in which amino-groups have been differently and only partially involved in following ureidic functionalizations. It was also proved how the analysed columns can be readily re-employed for the chromatographic applications for which they have been designed, without appreciable deterioration of the respective discrimination abilities.
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Affiliation(s)
- Fabio Buonsenso
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, Roma 00185, Italy
| | - Sabrina Madio
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, Roma 00185, Italy
| | - Alessia Ciogli
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, Roma 00185, Italy
| | - Gabriella Siani
- Dipartimento di Farmacia, Università "G. d'Annunzio", Via dei Vestini 31, Chieti 66013, Italy
| | - Marco Pierini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma "La Sapienza", Piazzale Aldo Moro 5, Roma 00185, Italy.
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9
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Sabia R, Ciogli A, Pierini M, Franzini R, Iazzetti A, Villani C. Chromatographic separation of the interconverting enantiomers of imidazo- and triazole-fused benzodiazepines. J Chromatogr A 2021; 1647:462148. [PMID: 33957345 DOI: 10.1016/j.chroma.2021.462148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/25/2021] [Accepted: 04/03/2021] [Indexed: 10/21/2022]
Abstract
The toolbox of medicinal chemists includes the 1,4-benzodiazepine scaffold as a "privileged scaffold" in drug discovery. Several biologically active small molecules containing a 1,4-benzodiazepine scaffold have been approved by the FDA for the treatment of various diseases, with most of them being used for their psychotropic effects. The therapeutic potential of 1,4-benzodiazepines has stimulated the interest of synthetic chemists in developing new synthetic strategies to a range of substituted analogues for biological evaluation. A structural variation of the classical benzodiazepine skeleton is observed e.g. in alprazolam, midazolam, and related benzodiazepines, which contain a 1,2,4-triazole or an imidazole ring fused to the benzodiazepine core. Irrespective of the presence of the fused heterocyclic ring, the seven-membered diazepine ring is far from planar, and its shape resembles a twist chair. Then, the unsymmetrical substitution pattern around the seven membered cycle renders these molecules chiral, as they lack any reflection-type symmetry element. However, chirality of this molecules is labile at room temperature, becausea simple ring flipping process converts one enantiomer into the other, and 1,4-benzodiazepines exist as a mixture of rapidly interconverting conformational enantiomers in solution at or near room temperature. Physical separation of the interconverting enantiomers of diazepam and of other related 1,4-benzodiazepin-2-ones can be accomplished by low temperature HPLC on chiral stationary phases (CSPs). If the HPLC column is cooled down to temperatures where the interconversion rate is sufficiently low, compared to the chromatographic separation rate, distinct separated peaks can be observed, provided the CSP is sufficiently enantioselctive. The apparent rate constants for the on-column enantiomerization and the corresponding free energy activation barriers were obtained by simulation of exchange-deformed HPLC profiles using a computer program based on the stochastic model. Here we report on the dynamic HPLC investigations carried out on a set of fused imidazo and triazolo-benzodiazepines (alprazolam, midazolam, triazolam and estazolam) The experimental dynamic chromatograms and the corresponding interconversion barriers reported in this paper show that the third fused heterocyclic ring increase the energy barrier by 2 kcal/mol.
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Affiliation(s)
- Rocchina Sabia
- SapienzaUniversità di Roma, Dipartimento di Chimica e Tecnologie del Farmaco, P.le A. Moro 5, 00185Rome, Italy.
| | - Alessia Ciogli
- SapienzaUniversità di Roma, Dipartimento di Chimica e Tecnologie del Farmaco, P.le A. Moro 5, 00185Rome, Italy
| | - Marco Pierini
- SapienzaUniversità di Roma, Dipartimento di Chimica e Tecnologie del Farmaco, P.le A. Moro 5, 00185Rome, Italy
| | - Roberta Franzini
- SapienzaUniversità di Roma, Dipartimento di Chimica e Tecnologie del Farmaco, P.le A. Moro 5, 00185Rome, Italy
| | - Antonia Iazzetti
- SapienzaUniversità di Roma, Dipartimento di Chimica e Tecnologie del Farmaco, P.le A. Moro 5, 00185Rome, Italy
| | - Claudio Villani
- SapienzaUniversità di Roma, Dipartimento di Chimica e Tecnologie del Farmaco, P.le A. Moro 5, 00185Rome, Italy.
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10
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Pelliccioli V, Franzini R, Mazzeo G, Villani C, Abbate S, Longhi G, Licandro E, Cauteruccio S. Chiral bis(benzo[1,2- b:4,3- b′]dithiophene) atropisomers: experimental and theoretical investigations of the stereochemical and chiroptical properties. NEW J CHEM 2021. [DOI: 10.1039/d1nj03248h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conformational chirality is a feature that may arise from the presence of a hindered rotation around a single bond that corresponds to a stereogenic axis.
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Affiliation(s)
- Valentina Pelliccioli
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milan, Italy
| | - Roberta Franzini
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, P.le A. Moro 5, 00185 Roma, Italy
| | - Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Claudio Villani
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, P.le A. Moro 5, 00185 Roma, Italy
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
- Istituto Nazionale di Ottica (INO), CNR, Research Unit of Brescia, c/o CSMT, via Branze 45, 25123 Brescia, Italy
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
- Istituto Nazionale di Ottica (INO), CNR, Research Unit of Brescia, c/o CSMT, via Branze 45, 25123 Brescia, Italy
| | - Emanuela Licandro
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milan, Italy
| | - Silvia Cauteruccio
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, I-20133 Milan, Italy
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11
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Franzini R, Pierini M, Mazzanti A, Iazzetti A, Ciogli A, Villani C. Molecular Recognition of the HPLC Whelk-O1 Selector towards the Conformational Enantiomers of Nevirapine and Oxcarbazepine. Int J Mol Sci 2020; 22:ijms22010144. [PMID: 33375681 PMCID: PMC7796420 DOI: 10.3390/ijms22010144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/16/2020] [Accepted: 12/23/2020] [Indexed: 01/19/2023] Open
Abstract
The presence of stereogenic elements is a common feature in pharmaceutical compounds, and affording optically pure stereoisomers is a frequent issue in drug design. In this context, the study of the chiral molecular recognition mechanism fundamentally supports the understanding and optimization of chromatographic separations with chiral stationary phases. We investigated, with molecular docking, the interactions between the chiral HPLC selector Whelk-O1 and the stereoisomers of two bioactive compounds, the antiviral Nevirapine and the anticonvulsant Oxcarbazepine, both characterized by two stereolabile conformational enantiomers. The presence of fast-exchange enantiomers and the rate of the interconversion process were studied using low temperature enantioselective HPLC and VT-NMR with Whelk-O1 applied as chiral solvating agent. The values of the energetic barriers of interconversion indicate, for the single enantiomers of both compounds, half-lives sufficiently long enough to allow their separation only at critically sub-ambient temperatures. The chiral selector Whelk-O1 performed as a strongly selective discriminating agent both when applied as a chiral stationary phase (CSP) in HPLC and as CSA in NMR spectroscopy.
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Affiliation(s)
- Roberta Franzini
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.P.); (A.I.); (A.C.)
- Correspondence: (R.F.); (C.V.)
| | - Marco Pierini
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.P.); (A.I.); (A.C.)
| | - Andrea Mazzanti
- Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, V. Risorgimento 4, 40136 Bologna, Italy;
| | - Antonia Iazzetti
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.P.); (A.I.); (A.C.)
| | - Alessia Ciogli
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.P.); (A.I.); (A.C.)
| | - Claudio Villani
- Department of Chemistry and Technology of Drugs, “Department of Excellence 2018−2022”, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy; (M.P.); (A.I.); (A.C.)
- Correspondence: (R.F.); (C.V.)
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12
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Krait S, Salgado A, Villani C, Naumann L, Neusüß C, Chankvetadze B, Scriba GK. Unusual complexation behavior between daclatasvir and γ-Cyclodextrin. A multiplatform study. J Chromatogr A 2020; 1628:461448. [DOI: 10.1016/j.chroma.2020.461448] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/30/2020] [Accepted: 08/01/2020] [Indexed: 12/14/2022]
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13
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Manzi G, Buonsenso F, Ismail OH, Ciogli A, Siani G, Pierini M. Modular and conservative procedure for the quantification of amino functionalities bonded to solid porous matrices. Anal Chim Acta 2019; 1068:120-130. [DOI: 10.1016/j.aca.2019.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 04/04/2019] [Accepted: 04/06/2019] [Indexed: 12/11/2022]
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14
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Mazzanti A, Boffa M, Marotta E, Mancinelli M. Axial Chirality at the Boron–Carbon Bond: Synthesis, Stereodynamic Analysis, and Atropisomeric Resolution of 6-Aryl-5,6-dihydrodibenzo[c,e][1,2]azaborinines. J Org Chem 2019; 84:12253-12258. [DOI: 10.1021/acs.joc.9b01550] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, Bologna 40136, Italy
| | - Maria Boffa
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, Bologna 40136, Italy
| | - Emanuela Marotta
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, Bologna 40136, Italy
| | - Michele Mancinelli
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, Bologna 40136, Italy
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15
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Perovani IS, de Oliveira ARM. Determination of Ethofumesate-2-hydroxy Stereolability by Dynamic HPLC. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201800112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Icaro Salgado Perovani
- Departamento de Química; Faculdade de Filosofia; Ciências e Letras de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
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16
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Ciogli A, Vivek Kumar S, Mancinelli M, Mazzanti A, Perumal S, Severi C, Villani C. Atropisomerism in 3-arylthiazolidine-2-thiones. A combined dynamic NMR and dynamic HPLC study. Org Biomol Chem 2018; 14:11137-11147. [PMID: 27830854 DOI: 10.1039/c6ob02145j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Sterically hindered 3-arylthiazolidine-2-thiones were prepared by a solvent-free reaction with arylisothiocyanates and 1,4-dithiane-2,5-diol. Atropisomerism was observed in two compounds (3 and 4, aryl = 1-naphthyl and 2-methylnaphth-1-yl), whose rotational energy barriers were measured using dynamic NMR and dynamic HPLC. The experimental analyses were supported by DFT calculations. Thermally stable atropisomers were obtained by dehydration of compounds 3 and 4 and the absolute configuration of the atropisomers of compound 6 was determined by theoretical simulation of the ECD and VCD spectra.
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Affiliation(s)
- A Ciogli
- Department of Chemistry and Technologies of Drug, Sapienza University of Rome, Piazzale A. Moro 5, I-00185 Rome, Italy
| | - S Vivek Kumar
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625021, Tamil Nadu, India
| | - M Mancinelli
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - A Mazzanti
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - S Perumal
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai-625021, Tamil Nadu, India
| | - C Severi
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
| | - C Villani
- Department of Chemistry and Technologies of Drug, Sapienza University of Rome, Piazzale A. Moro 5, I-00185 Rome, Italy
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17
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Vargas-Caporali J, Juaristi E. Fundamental Developments of Chiral Phase Chromatography in Connection with Enantioselective Synthesis of β-Amino Acids. Isr J Chem 2017. [DOI: 10.1002/ijch.201700011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jorge Vargas-Caporali
- Departamento de Química; Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional Avenida IPN No. 2508; 07360 Ciudad de México México
| | - Eusebio Juaristi
- Departamento de Química; Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional Avenida IPN No. 2508; 07360 Ciudad de México México
- El Colegio Nacional; Luis González Obregón No. 23, Centro Histórico 06020 Ciudad de México México
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18
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Gabrieli S, Cirilli R, Benincori T, Pierini M, Rizzo S, Rossi S. BITHIENOLs: PromisingC2-Symmetric Biheteroaromatic Diols for Organic Transformation. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sara Gabrieli
- Dipartimento di Scienza ed Alta Tecnologia dell'Università dell'Insubria; Via Valleggio 11 22100 Como Italy
| | - Roberto Cirilli
- Dipartimento del Farmaco; Istituto Superiore di Sanità; Viale Regina Elena 299 00161 Roma Italy
| | - Tiziana Benincori
- Dipartimento di Scienza ed Alta Tecnologia dell'Università dell'Insubria; Via Valleggio 11 22100 Como Italy
| | - Marco Pierini
- Dipartimento di Chimica e Tecnologie del Farmaco; Università degli Studi di Roma “La Sapienza”; Piazzale Aldo Moro 5 00185 Roma Italy
| | | | - Sergio Rossi
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
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19
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Prati L, Mancinelli M, Ciogli A, Mazzanti A. Tetrasubstituted cyclopentadienones as suitable enantiopure ligands with axial chirality. Org Biomol Chem 2017; 15:8720-8728. [DOI: 10.1039/c7ob01455d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of thermally stable atropisomeric phencyclones has been successfully synthesized as ligands in new ruthenium-based enantioselective hydrogenation catalysts.
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Affiliation(s)
- L. Prati
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- 40136 Bologna
- Italy
| | - M. Mancinelli
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- 40136 Bologna
- Italy
| | - A. Ciogli
- Department of Chemistry and Technologies of Drug
- Sapienza University of Rome
- I-00185 Rome
- Italy
| | - A. Mazzanti
- Department of Industrial Chemistry “Toso Montanari”
- University of Bologna
- 40136 Bologna
- Italy
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20
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Menta S, Carradori S, Siani G, Secci D, Mannina L, Sobolev AP, Cirilli R, Pierini M. Elucidation of the mechanisms governing the thermal diastereomerization of bioactive chiral 1,3,4-thiadiazoline spiro-cyclohexyl derivatives towards their anancomeric stereoisomers. RSC Adv 2016. [DOI: 10.1039/c6ra13727j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of bioactive 1,3,4-thiadiazoline-spiro-cyclohexyl-alkyl-substituted diastereomers by effective switching between kinetic and thermodynamic control.
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Affiliation(s)
- S. Menta
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Rome
- Italy
| | - S. Carradori
- Department of Pharmacy
- “G. D'Annunzio” University of Chieti-Pescara
- 66100 Chieti
- Italy
| | - G. Siani
- Department of Pharmacy
- “G. D'Annunzio” University of Chieti-Pescara
- 66100 Chieti
- Italy
| | - D. Secci
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Rome
- Italy
| | - L. Mannina
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Rome
- Italy
| | - A. P. Sobolev
- Laboratorio di Risonanza Magnetica “AnnalauraSegre”
- Istituto di Metodologie Chimiche CNR Area della Ricerca di Roma
- 00015 Monterotondo
- Italy
| | - R. Cirilli
- Dipartimento del Farmaco
- Istituto Superiore di Sanità
- 00161 Rome
- Italy
| | - M. Pierini
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Rome
- Italy
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21
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Menta S, Carradori S, Secci D, Faggi C, Mannina L, Cirilli R, Pierini M. The Anancomeric Character of the Pharmacophore 1,3,4-Thiadiazoline Framework in Chiral Spiro-Cyclohexyl Derivatives: Effects on Stereochemistry and Spiro-Junction Lability. Thermodynamic Aspects. J Org Chem 2015; 80:11932-40. [DOI: 10.1021/acs.joc.5b01635] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergio Menta
- Dipartimento
di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Simone Carradori
- Department
of Pharmacy, “G. D’Annunzio” University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Daniela Secci
- Dipartimento
di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Cristina Faggi
- Dipartimento
di Chimica, Università degli studi di Firenze, Via della
Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy
| | - Luisa Mannina
- Dipartimento
di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Roberto Cirilli
- Dipartimento
del Farmaco, Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
| | - Marco Pierini
- Dipartimento
di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy
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22
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Rizzo S, Menta S, Benincori T, Ferretti R, Pierini M, Cirilli R, Sannicolò F. Determination of the Enantiomerization Barrier of the Residual Enantiomers ofC3-Symmetric Tris[3-(1-Methyl-2-Alkyl)Indolyl]Phosphane Oxides: Case Study of a Multitasking HPLC Investigation Based on an Immobilized Polysaccharide Stationary Phase. Chirality 2015; 27:888-99. [DOI: 10.1002/chir.22525] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 08/03/2015] [Accepted: 08/03/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Simona Rizzo
- Istituto di Scienze e Tecnologie Molecolari; Consiglio Nazionale delle Ricerche; Milano Italy
| | - Sergio Menta
- Dipartimento di Chimica e Tecnologie del Farmaco; Sapienza Università di Roma; Roma Italy
| | - Tiziana Benincori
- Dipartimento di Scienza ed Alta Tecnologia; Università degli Studi dell'Insubria; Como Italy
| | - Rosella Ferretti
- Dipartimento di Chimica del Farmaco; Istituto Superiore di Sanità; Roma Italy
| | - Marco Pierini
- Dipartimento di Chimica e Tecnologie del Farmaco; Sapienza Università di Roma; Roma Italy
| | - Roberto Cirilli
- Dipartimento di Chimica del Farmaco; Istituto Superiore di Sanità; Roma Italy
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23
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Stereolability of Chiral Ruthenium Catalysts With Frozen NHC Ligand Conformations Investigated by Dynamic-HPLC. Chirality 2015; 27:685-92. [DOI: 10.1002/chir.22487] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 06/24/2015] [Accepted: 07/06/2015] [Indexed: 11/07/2022]
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24
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25
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Sabia R, Ciogli A, Pierini M, Gasparrini F, Villani C. Dynamic high performance liquid chromatography on chiral stationary phases. Low temperature separation of the interconverting enantiomers of diazepam, flunitrazepam, prazepam and tetrazepam. J Chromatogr A 2014; 1363:144-9. [DOI: 10.1016/j.chroma.2014.07.097] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 07/25/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
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26
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Kotoni D, Piras M, Cabri W, Giorgi F, Mazzanti A, Pierini M, Quaglia M, Villani C, Gasparrini F. Thermodynamic and kinetic investigation of monoketo-aldehyde-peroxyhemiacetal (MKA), a stereolabile degradation product of dihydroartemisinin. RSC Adv 2014. [DOI: 10.1039/c4ra00879k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Theβ⇆αepimerization process ofMKAhas been studied under a thermodynamic and kinetic point of view in several solvents. LSER analyses and molecular modeling calculations allowed an effective rationalization of the findings.
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Affiliation(s)
- D. Kotoni
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Roma, Italy
| | - M. Piras
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Roma, Italy
- Kosterlitz Centre for Therapeutics
- Institute of Medical Sciences
| | - W. Cabri
- Analytical Development
- R&D Department
- Sigma-Tau S.p.A
- 00040 Pomezia, Italy
| | - F. Giorgi
- Analytical Development
- R&D Department
- Sigma-Tau S.p.A
- 00040 Pomezia, Italy
| | - A. Mazzanti
- Dipartimento di Chimica Industriale “T. Montanari”
- Università di Bologna
- 40136 Bologna, Italy
| | - M. Pierini
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Roma, Italy
| | - M. Quaglia
- Analytical Development
- R&D Department
- Sigma-Tau S.p.A
- 00040 Pomezia, Italy
| | - C. Villani
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Roma, Italy
| | - F. Gasparrini
- Dipartimento di Chimica e Tecnologie del Farmaco
- Sapienza Università di Roma
- 00185 Roma, Italy
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27
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Vaghi L, Benincori T, Cirilli R, Alberico E, Mussini PR, Pierini M, Pilati T, Rizzo S, Sannicolò F. Ph-tetraMe-Bithienine, the First Member of the Class of Chiral Heterophosphepines: Synthesis, Electronic and Steric Properties, Metal Complexes and Catalytic Activity. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301098] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Vanthuyne N, Roussel C. Chiroptical Detectors for the Study of Unusual Phenomena in Chiral Chromatography. Top Curr Chem (Cham) 2013; 340:107-51. [DOI: 10.1007/128_2013_441] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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29
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Carradori S, Cirilli R, Dei Cicchi S, Ferretti R, Menta S, Pierini M, Secci D. 3-Methylcyclohexanone thiosemicarbazone: Determination of E/Z isomerization barrier by dynamic high-performance liquid chromatography, configuration assignment and theoretical study of the mechanisms involved by the spontaneous, acid and base catalyzed processes. J Chromatogr A 2012; 1269:168-77. [DOI: 10.1016/j.chroma.2012.08.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 07/20/2012] [Accepted: 08/02/2012] [Indexed: 11/16/2022]
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30
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Rizzo S, Benincori T, Bonometti V, Cirilli R, Mussini PR, Pierini M, Pilati T, Sannicolò F. Steric and Electronic Effects on the Configurational Stability of Residual Chiral Phosphorus-Centered Three-Bladed Propellers: Tris-aryl Phosphanes. Chemistry 2012; 19:182-94. [DOI: 10.1002/chem.201201182] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 08/03/2012] [Indexed: 11/08/2022]
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31
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Ciogli A, Fontana A, Gasparrini F, Maggini M, Giovannoli M, Pierini M, Busolo F, Siani G, Villani C. Inductive and Mesomeric Effects of the [60]Fulleropyrrolidine Fragment and [60]Fullerene Sphere: A Quantitative Evaluation Based on Theory and Experiments. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Ferretti R, Mai A, Gallinella B, Zanitti L, Valente S, Cirilli R. Application of 3μm particle-based amylose-derived chiral stationary phases for the enantioseparation of potential histone deacetylase inhibitors. J Chromatogr A 2011; 1218:8394-8. [DOI: 10.1016/j.chroma.2011.09.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 09/19/2011] [Accepted: 09/20/2011] [Indexed: 11/16/2022]
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33
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Cavazzini A, Pasti L, Massi A, Marchetti N, Dondi F. Recent applications in chiral high performance liquid chromatography: A review. Anal Chim Acta 2011; 706:205-22. [DOI: 10.1016/j.aca.2011.08.038] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/08/2011] [Accepted: 08/25/2011] [Indexed: 01/17/2023]
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34
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Lunazzi L, Mancinelli M, Mazzanti A, Pierini M. Stereomutation of Axially Chiral Aryl Coumarins. J Org Chem 2010; 75:5927-33. [DOI: 10.1021/jo101261k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lodovico Lunazzi
- Department of Organic Chemistry “A. Mangini”, University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Michele Mancinelli
- Department of Organic Chemistry “A. Mangini”, University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Andrea Mazzanti
- Department of Organic Chemistry “A. Mangini”, University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Marco Pierini
- Dipartimento di Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive, Università “La Sapienza”, Piazzale A. Moro, 5, Roma, Italy
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Affiliation(s)
- Timothy J. Ward
- Millsaps College, 1701 N. State Street, Box 150306, Jackson, Mississippi 39210
| | - Karen D. Ward
- Millsaps College, 1701 N. State Street, Box 150306, Jackson, Mississippi 39210
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36
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On- and off column enantiomerization of 4,4′-bisquinolin-2-ones: A comparison of Auto-, DHPLcy2k and DCXplorer calculated thermodynamic data generated by dynamic high, performance liquid chromatography with theoretically calculated data. J Chromatogr A 2010; 1217:1017-23. [DOI: 10.1016/j.chroma.2009.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 11/27/2009] [Accepted: 12/01/2009] [Indexed: 11/21/2022]
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37
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Pasti L, Cavazzini A, Nassi M, Dondi F. Dynamic chromatography: A stochastic approach. J Chromatogr A 2010; 1217:1000-9. [DOI: 10.1016/j.chroma.2009.10.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 10/05/2009] [Accepted: 10/12/2009] [Indexed: 10/20/2022]
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