1
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Sánchez Valera M, Casas Jaraíces R, Montejo M, Rodríguez Ortega PG. Vibrational Circular Dichroism study of chiral food additives: γ-valero- and γ-caprolactone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 247:119140. [PMID: 33188971 DOI: 10.1016/j.saa.2020.119140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/18/2020] [Accepted: 10/23/2020] [Indexed: 06/11/2023]
Abstract
γ-valerolactone and γ-caprolactone are commonly used as flavor additives in the food industry. In the present work we fully explore the molecular structure and conformational distribution of enantiopure γ-valerolactone and γ-caprolactone in solution state by using Vibrational Circular Dichroism (VCD) spectroscopy assisted by quantum chemical calculations. In order to establish the most accurate DFT method for this type of samples a set of methods and basis sets have been implemented and their performances have been compared. Subsequently, we have performed a complete vibrational assignment, which allowed to detect certain key vibrational features related to specific solution-state conformational speciation. In spite of the rigidity of the samples being studied, our results point to the incidence of conformational mixture in CCl4 solution in both samples.
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Affiliation(s)
- M Sánchez Valera
- Department of Physical and Analytical Chemistry, Experimental Sciences Faculty, University of Jaen, E-23071 Jaén, Spain
| | - R Casas Jaraíces
- Department of Physical and Analytical Chemistry, Experimental Sciences Faculty, University of Jaen, E-23071 Jaén, Spain
| | - M Montejo
- Department of Physical and Analytical Chemistry, Experimental Sciences Faculty, University of Jaen, E-23071 Jaén, Spain
| | - P G Rodríguez Ortega
- Department of Specific Didactics, Educational Sciences Faculty, University of Cordoba, E-14071 Córdoba, Spain.
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2
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Padula D, Mazzeo G, Santoro E, Scafato P, Belviso S, Superchi S. Amplification of the chiroptical response of UV-transparent amines and alcohols by N-phthalimide derivatization enabling absolute configuration determination through ECD computational analysis. Org Biomol Chem 2020; 18:2094-2102. [PMID: 32107518 DOI: 10.1039/d0ob00052c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The stereoselective transformation of chiral UV-transparent amines and alcohols to phthalimides has proved to be a simple and efficient method to enhance the chiroptical response of these substrates allowing their reliable absolute configuration determination by computational analysis of ECD spectra. Such a transformation also leads to a significant reduction in the molecular conformational flexibility thus simplifying the conformational analysis required by the computational treatment. The method described herein thus allows the absolute configuration assignment to these challenging substrates to be much easier and reliable.
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Affiliation(s)
- Daniele Padula
- Dipartimento di Scienze, Università della Basilicata, via dell'Ateneo Lucano, 85100, Potenza, Italy.
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3
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Abbate S, Longhi G, Mazzeo G, Villani C, Petković S, Ruzziconi R. CF3: an overlooked chromophore in VCD spectra. A review of recent applications in structural determination. RSC Adv 2019; 9:11781-11796. [PMID: 35517012 PMCID: PMC9063343 DOI: 10.1039/c9ra01358j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/03/2019] [Indexed: 12/03/2022] Open
Abstract
The VCD spectra of several chiral compounds containing the CF3 group are reviewed and analyzed. The list of compounds contains pharmaceutically relevant molecules as well as simple model molecules, having the value of case studies. In particular we point out the importance of the sign of the VCD band relative to some stretching normal mode of CF3 in the region 1110–1150 cm−1, as diagnostic of the configuration of stereogenic carbons C* to which the CF3 group is bound: the correspondence (−) ↔ (R) and (+) ↔ (S) holds for 100% of 1-aryl-2,2,2-trifluoroethanols. DFT calculations confirm these conclusions, but for the rule established here they serve just as a check. This rule is tested on two new compounds, namely N-tert-butanesulfinyl-1-(quinoline-4-yl)-2,2,2-trifluoroethylamine, 8, and 4-[2-(2,2,2-trifluoro-1-hydroxyethyl)pyrrolidin-1-yl]-2-(trifluoromethyl)benzonitrile, 10, both containing two stereogenic elements, one of them being an asymmetric carbon C* of unknown configuration binding a CF3 group. Discussion of the general validity of the rule is provided and some further tests are run on compounds in well-established drugs. VCD allows one to investigate the configuration of stereogenic centers bearing a CF3-group and to define its interactions with nearby chemical groups.![]()
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Affiliation(s)
- Sergio Abbate
- DMMT (Dipartimento di Medicina Molecolare e Traslazionale)
- Università di Brescia
- 25123 Brescia
- Italy
| | - Giovanna Longhi
- DMMT (Dipartimento di Medicina Molecolare e Traslazionale)
- Università di Brescia
- 25123 Brescia
- Italy
| | - Giuseppe Mazzeo
- DMMT (Dipartimento di Medicina Molecolare e Traslazionale)
- Università di Brescia
- 25123 Brescia
- Italy
| | - Claudio Villani
- Dipartimento di Chimica e Tecnologie del Farmaco
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
| | - Silvija Petković
- Dipartimento di Chimica, Biologia e Biotecnologie
- Università di Perugia
- 06123 Perugia
- Italy
| | - Renzo Ruzziconi
- Dipartimento di Chimica, Biologia e Biotecnologie
- Università di Perugia
- 06123 Perugia
- Italy
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4
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Mazzeo G, Longhi G, Corless VB, Zajdlik A, Yudin AK, Abbate S. Vibrational Circular Dichroism Unveils Chiroptical, Electrical, and Magnetic Properties of Borylated Isocyanides and Aldehydes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Viale Europa 11 25123 Brescia Italy
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Viale Europa 11 25123 Brescia Italy
| | - Victoria B. Corless
- Davenport Research Laboratories; Department of Chemistry; University of Toronto; 80 St. George St. M5S 3H6 Toronto ON Canada
| | - Adam Zajdlik
- Davenport Research Laboratories; Department of Chemistry; University of Toronto; 80 St. George St. M5S 3H6 Toronto ON Canada
| | - Andrei K. Yudin
- Davenport Research Laboratories; Department of Chemistry; University of Toronto; 80 St. George St. M5S 3H6 Toronto ON Canada
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Viale Europa 11 25123 Brescia Italy
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5
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Mazzeo G, Cimmino A, Masi M, Longhi G, Maddau L, Memo M, Evidente A, Abbate S. Importance and Difficulties in the Use of Chiroptical Methods to Assign the Absolute Configuration of Natural Products: The Case of Phytotoxic Pyrones and Furanones Produced by Diplodia corticola. JOURNAL OF NATURAL PRODUCTS 2017; 80:2406-2415. [PMID: 28901768 DOI: 10.1021/acs.jnatprod.7b00119] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
α-Pyrones and furanones are metabolites produced by Diplodia corticola, a pathogen of cork oak. Previously, the absolute configuration (AC) of diplopyrone was defined by chiroptical methods and Mosher's method. Using X-ray and chiroptical methods, the AC of sapinofuranone C was assigned, while that of the (4S,5S)-enantiomer of sapinofuranone B was established by enantioselective total synthesis. Diplofuranone A and diplobifuranylones A-C ACs are still unassigned. Here electronic and vibrational circular dichroism (ECD and VCD) and optical rotatory dispersion (ORD) spectra are reported and compared with density functional theory computations. The AC of the (4S,5S)-enantiomer of sapinofuranone B and sapinofuranone C is checked for completeness. The AC of diplobifuranylones A-C is assigned as (2S,2'S,5'S,6'S), (2S,2'R,5'S,6'R), and (2S,2'S,5'R,6'R), respectively, with the Mosher's method applied to define the absolute configuration of the carbinol stereogenic carbon. The AC assignment of sapinofuranones is problematic: while diplofuranone A is (4S,9R), sapinofuranones B and C are (4S,5S) according to ORD and VCD, but not to ECD. To eliminate these ambiguities, ECD and VCD spectra of a di-p-bromobenzoate derivative of sapinofuranone C are measured and calculated. For phytotoxicity studies, it is relevant that all six compounds share the S configuration for the stereogenic carbon atom of the lactone moiety.
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Affiliation(s)
- Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
| | - Lucia Maddau
- Dipartimento di Agraria, Sezione di Patologia Vegetale ed Entomologia, Università degli Studi di Sassari , Viale Italia 39, 07100 Sassari, Italy
| | - Maurizio Memo
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo , Via Cintia 4, 80126 Napoli, Italy
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale, Università degli Studi di Brescia , Viale Europa 11, 25123 Brescia, Italy
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6
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The role of chirality in a set of key intermediates of pharmaceutical interest, 3-aryl-substituted-γ-butyrolactones, evidenced by chiral HPLC separation and by chiroptical spectroscopies. J Pharm Biomed Anal 2017; 144:41-51. [PMID: 28118957 DOI: 10.1016/j.jpba.2017.01.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/14/2016] [Accepted: 01/04/2017] [Indexed: 11/20/2022]
Abstract
The enantiomers of four chiral 3-aryl-substituted-γ-butyrolactones, key intermediates for the preparation of compounds of pharmaceutical interest, were successfully isolated by enantioselective chromatography, employing the Chiralpak AD-H chiral stationary phase. For all compounds the same elution order was observed, as monitored by a full set of chiroptical methods that we employed, namely ORD (optical rotatory dispersion), ECD (electronic circular dichroism, or CD in the UV range), and VCD (vibrational circular dichroism, or CD in the IR range). By density functional theory (DFT) calculations we were able to determine that the first eluted enantiomer has (S) absolute configuration in all four cases. We were able to justify the elution order by molecular docking calculations for all four enantiomeric pairs and suitable modeling of the stationary and mobile phases of the employed columns. The optimal performance of the chiroptical spectroscopies and of the DFT calculations allows us to formulate a lactone chirality rule out of the CO stretching region of the VCD spectra.
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7
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Longhi G, Castiglioni E, Koshoubu J, Mazzeo G, Abbate S. Circularly Polarized Luminescence: A Review of Experimental and Theoretical Aspects. Chirality 2016; 28:696-707. [DOI: 10.1002/chir.22647] [Citation(s) in RCA: 263] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 08/26/2016] [Accepted: 08/26/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Giovanna Longhi
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
| | - Ettore Castiglioni
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
- JASCO Europe; Cremella (LC) Italy
| | - Jun Koshoubu
- JASCO Corporation; Ishikawa-machi, Hachioji Tokyo Japan
| | - Giuseppe Mazzeo
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
| | - Sergio Abbate
- Department of Molecular and Translational Medicine; Università di Brescia; Brescia Italy
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8
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Rossi D, Nasti R, Marra A, Meneghini S, Mazzeo G, Longhi G, Memo M, Cosimelli B, Greco G, Novellino E, Da Settimo F, Martini C, Taliani S, Abbate S, Collina S. Enantiomeric 4-Acylamino-6-alkyloxy-2 Alkylthiopyrimidines As Potential A3Adenosine Receptor Antagonists: HPLC Chiral Resolution and Absolute Configuration Assignment by a Full Set of Chiroptical Spectroscopy. Chirality 2016; 28:434-40. [DOI: 10.1002/chir.22599] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 02/19/2016] [Accepted: 03/01/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Daniela Rossi
- Dipartimento di Scienze del Farmaco; Università di Pavia; Pavia Italy
| | - Rita Nasti
- Dipartimento di Scienze del Farmaco; Università di Pavia; Pavia Italy
| | - Annamaria Marra
- Dipartimento di Scienze del Farmaco; Università di Pavia; Pavia Italy
| | - Silvia Meneghini
- Dipartimento di Scienze del Farmaco; Università di Pavia; Pavia Italy
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Brescia Italy
| | - Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Brescia Italy
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Brescia Italy
| | - Maurizio Memo
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Brescia Italy
| | - Barbara Cosimelli
- Dipartimento di Farmacia; Università di Napoli “Federico II”; Napoli Italy
| | - Giovanni Greco
- Dipartimento di Farmacia; Università di Napoli “Federico II”; Napoli Italy
| | - Ettore Novellino
- Dipartimento di Farmacia; Università di Napoli “Federico II”; Napoli Italy
| | | | | | | | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale; Università di Brescia; Brescia Italy
| | - Simona Collina
- Dipartimento di Scienze del Farmaco; Università di Pavia; Pavia Italy
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9
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Mazzeo G, Abbate S, Longhi G, Castiglioni E, Boiadjiev SE, Lightner DA. pH Dependent Chiroptical Properties of (1R,2R)- and (1S,2S)-trans-Cyclohexane Diesters and Diamides from VCD, ECD, and CPL Spectroscopy. J Phys Chem B 2016; 120:2380-7. [DOI: 10.1021/acs.jpcb.5b11223] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giuseppe Mazzeo
- Dipartimento
di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Sergio Abbate
- Dipartimento
di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
- CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Via della Vasca
Navale, 84, 00146 Roma, Italy
| | - Giovanna Longhi
- Dipartimento
di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
- CNISM, Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Via della Vasca
Navale, 84, 00146 Roma, Italy
| | - Ettore Castiglioni
- Dipartimento
di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
- JASCO Europe, Via Cadorna 1, 23894 Cremella, LC, Italy
| | - Stefan E. Boiadjiev
- Department
of Chemistry and Biochemistry, Medical University-Pleven, 1 St. Kl. Ohridski Str., 5800 Pleven, Bulgaria
| | - David A. Lightner
- Department
of Chemistry, University of Nevada, Reno, Nevada 89557-0020, United States
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10
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Gorunova ON, Novitskiy IM, Grishin YK, Gloriozov IP, Roznyatovsky VA, Khrustalev VN, Kochetkov KA, Dunina VV. Determination of the Absolute Configuration of CN-Palladacycles by 31P{1H} NMR Spectroscopy Using (1R,2S,5R)-Menthyloxydiphenylphosphine as the Chiral Derivatizing Agent: Efficient Chirality Transfer in Phosphinite Adducts. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00706] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Olga N. Gorunova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Street 28, 119991 Moscow, Russian Federation
| | - Ivan M. Novitskiy
- Department
of Chemistry, M.V. Lomonosov Moscow State University, Lenin Hills, 119991, Moscow, Russian Federation
| | - Yuri K. Grishin
- Department
of Chemistry, M.V. Lomonosov Moscow State University, Lenin Hills, 119991, Moscow, Russian Federation
| | - Igor P. Gloriozov
- Department
of Chemistry, M.V. Lomonosov Moscow State University, Lenin Hills, 119991, Moscow, Russian Federation
| | - Vitaly A. Roznyatovsky
- Department
of Chemistry, M.V. Lomonosov Moscow State University, Lenin Hills, 119991, Moscow, Russian Federation
| | - Victor N. Khrustalev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Street 28, 119991 Moscow, Russian Federation
- Inorganic Chemistry Department, Peoples’ Friendship University of Russia, Miklukho-Maklay Street 6, 117198 Moscow, Russian Federation
| | - Konstantin A. Kochetkov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Street 28, 119991 Moscow, Russian Federation
| | - Valery V. Dunina
- Department
of Chemistry, M.V. Lomonosov Moscow State University, Lenin Hills, 119991, Moscow, Russian Federation
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11
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Fusè M, Mazzeo G, Longhi G, Abbate S, Zerla D, Rimoldi I, Contini A, Cesarotti E. VCD spectroscopy as an excellent probe of chiral metal complexes containing a carbon monoxide vibrational chromophore. Chem Commun (Camb) 2015; 51:9385-7. [DOI: 10.1039/c5cc02170g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
η5-Menthyl-C5H4Ru(ii) carbonyl complexes show VCD of CO; the stretching is very sensitive and diagnostic to the (R)Ru/(S)Rumetal chirality.
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Affiliation(s)
- Marco Fusè
- Dipartimento di Scienze Farmaceutiche
- Università di Milano Via Golgi 19
- 20133 Milano
- Italy
| | - Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia
- 25123 Brescia
- Italy
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia
- 25123 Brescia
- Italy
- CNISM Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia
- 00146 Roma
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia
- 25123 Brescia
- Italy
- CNISM Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia
- 00146 Roma
| | - Daniele Zerla
- Dipartimento di Scienze Farmaceutiche
- Università di Milano Via Golgi 19
- 20133 Milano
- Italy
| | - Isabella Rimoldi
- Dipartimento di Scienze Farmaceutiche
- Università di Milano Via Golgi 19
- 20133 Milano
- Italy
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche
- Università di Milano Via Golgi 19
- 20133 Milano
- Italy
| | - Edoardo Cesarotti
- Dipartimento di Scienze Farmaceutiche
- Università di Milano Via Golgi 19
- 20133 Milano
- Italy
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12
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Górecki M. A configurational and conformational study of (−)-Oseltamivir using a multi-chiroptical approach. Org Biomol Chem 2015; 13:2999-3010. [DOI: 10.1039/c4ob02369b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four chiroptical methods, i.e. electronic circular dichroism (ECD), optical rotatory dispersion (ORD), vibrational circular dichroism (VCD), and Raman optical activity (ROA) were employed to discover a set of the most probable conformations of (−)-Oseltamivir in solution.
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Affiliation(s)
- Marcin Górecki
- Institute of Organic Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
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13
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Mazzeo G, Longhi G, Abbate S, Buonerba F, Ruzziconi R. Chiroptical Signatures of Planar and Central Chirality in [2]Paracyclo[2](5,8)quinolinophane Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402945] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Felluga F, Forzato C, Mazzeo G, Nitti P, Pitacco G, Superchi S. Synthesis, enzymatic resolution, and stereochemical characterization of isoparaconic acid derivatives: a combined experimental and theoretical investigation. Chirality 2014; 26:640-50. [PMID: 25069702 DOI: 10.1002/chir.22355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 06/06/2014] [Indexed: 11/08/2022]
Abstract
Enantiomerically enriched isoparaconic acid derivatives were obtained by kinetic enzymatic resolution. To explain the solvent dependence observed for their optical rotatory power a computational investigation of their chiroptical properties was performed.
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Affiliation(s)
- Fulvia Felluga
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, Trieste, Italy
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15
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Dezhahang Z, Poopari MR, Hernández FE, Diaz C, Xu Y. Diastereomeric preference of a triply axial chiral binaphthyl based molecule: a concentration dependent study by chiroptical spectroscopies. Phys Chem Chem Phys 2014; 16:12959-67. [DOI: 10.1039/c4cp01704h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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