1
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Liu R, Wang J, Wu H, Quan X, Wang S, Guo J, Wang Y, Li H. Stereocontrol in an intermolecular Schmidt reaction of equilibrating hydroxyalkyl allylic azides. Chem Commun (Camb) 2024; 60:4362-4365. [PMID: 38563154 DOI: 10.1039/d4cc00907j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
A selective intermolecular Schmidt reaction of equilibrating hydroxyalkyl allylic azides is reported to afford N-hydroxyalk-1-en-3-yl lactams in modest to high yields. For prochiral and chiral ketones, modest to high 1,5-diastereoselectivity was achieved, and the mechanistic analysis is supported by DFT calculation.
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Affiliation(s)
- Ruzhang Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Juan Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Hao Wu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Xianfeng Quan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Shilin Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Jiandong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Heting Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
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2
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Núñez-Villanueva D, Plata-Ruiz A, Romero-Muñiz I, Martín-Pérez I, Infantes L, González-Muñiz R, Martín-Martínez M. β-Turn Induction by a Diastereopure Azepane-Derived Quaternary Amino Acid. J Org Chem 2023; 88:14688-14696. [PMID: 37774108 PMCID: PMC10594656 DOI: 10.1021/acs.joc.3c01689] [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: 07/28/2023] [Indexed: 10/01/2023]
Abstract
β-Turns are one of the most common secondary structures found in proteins. In the interest of developing novel β-turn inducers, a diastereopure azepane-derived quaternary amino acid has been incorporated into a library of simplified tetrapeptide models in order to assess the effect of the azepane position and peptide sequence on the stabilization of β-turns. The conformational analysis of these peptides by molecular modeling, NMR spectroscopy, and X-ray crystallography showed that this azepane amino acid is an effective β-turn inducer when incorporated at the i + 1 position. Moreover, the analysis of the supramolecular self-assembly of one of the β-turn-containing peptide models in the solid state reveals that it forms a supramolecular helical arrangement while maintaining the β-turn structure. The results here presented provide the basis for the use of this azepane quaternary amino acid as a strong β-turn inducer in the search for novel peptide-based bioactive molecules, catalysts, and biomaterials.
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Affiliation(s)
| | - Adrián Plata-Ruiz
- Instituto
de Química Médica (IQM-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Ignacio Romero-Muñiz
- Instituto
de Química Médica (IQM-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
- Universidad
Autónoma de Madrid, Química Orgánica, Francisco Tomás y Valiente,
7, 28049 Madrid, Spain
| | - Ignacio Martín-Pérez
- Instituto
de Química Médica (IQM-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Lourdes Infantes
- Instituto
de Química Física Rocasolano (IQFR-CSIC), Serrano 119, 28006 Madrid, Spain
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3
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Olifir OS, Chernykh AV, Dobrydnev AV, Grygorenko OO, Moroz YS, Voitenko ZV, Radchenko DS. Multigram Synthesis of Advanced 6,6-Difluorospiro[3.3]heptane-derived Building Blocks. European J Org Chem 2021; 2021:6541-6550. [PMID: 35095338 PMCID: PMC8791643 DOI: 10.1002/ejoc.202000432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Indexed: 01/21/2024]
Abstract
A convenient methodology for constructing 6,6-difluorospiro[3.3]heptane scaffold - a conformationally restricted isostere of gem-difluorocycloalkanes - is developed. Alarge array of novel 2-mono- and 2,2-bifunctionalized difluorospiro[3.3]heptane building blocks was obtained through the convergent synthesis strategy using a common synthetic precursor - 1,1-bis(bromomethyl)-3,3-difluorocyclobutane. The target compounds and intermediates were prepared by short reaction sequences (6-10 steps) on multigram scale (up to 0.47 kg).
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Affiliation(s)
- Oleksandr S Olifir
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Anton V Chernykh
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Alexey V Dobrydnev
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Yuriy S Moroz
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
- Chemspace, Ilukstes iela 38-5, Riga, LV-1082, Latvia
| | - Zoia V Voitenko
- Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Dmytro S Radchenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska Street 78, Kyiv 02094, Ukraine
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4
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Bucci R, Maggioni D, Locarno S, Ferretti AM, Gelmi ML, Pellegrino S. Exploiting Ultrashort α,β-Peptides in the Colloidal Stabilization of Gold Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11365-11373. [PMID: 34533956 DOI: 10.1021/acs.langmuir.1c01981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Colloidal gold nanoparticles (GNPs) have found wide-ranging applications in nanomedicine due to their unique optical properties, ease of preparation, and functionalization. To avoid the formation of GNP aggregates in the physiological environment, molecules such as lipids, polysaccharides, or polymers are employed as GNP coatings. Here, we present the colloidal stabilization of GNPs using ultrashort α,β-peptides containing the repeating unit of a diaryl β2,3-amino acid and characterized by an extended conformation. Differently functionalized GNPs have been characterized by ultraviolet, dynamic light scattering, and transmission electron microscopy analysis, allowing us to define the best candidate that inhibits the aggregation of GNPs not only in water but also in mouse serum. In particular, a short tripeptide was found to be able to stabilize GNPs in physiological media over 3 months. This new system has been further capped with albumin, obtaining a material with even more colloidal stability and ability to prevent the formation of a thick protein corona in physiological media.
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Affiliation(s)
- Raffaella Bucci
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Daniela Maggioni
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Silvia Locarno
- Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
| | - Anna Maria Ferretti
- Istituto di Scienze e Tecnologie Chimiche ″Giulio Natta″, Consiglio Nazionale Delle Ricerche (SCITEC-CNR), Via G. Fantoli 16/15, 20138 Milano, Italy
| | - Maria Luisa Gelmi
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
| | - Sara Pellegrino
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica "A. Marchesini", Università degli Studi di Milano, Via Venezian 21, 20133 Milano, Italy
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5
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Zhang X, Ligny R, Chewchanwuttiwong S, Hadade R, Laurent MY, Martel A, Jacquemmoz C, Lhoste J, Bricaud S, Py S, Dujardin G. δ-Valerolactamic Quaternary Amino Acid Derivatives: Enantiodivergent Synthesis and Evidence for Stereodifferentiated β-Turn-Inducing Properties. J Org Chem 2021; 86:8041-8055. [PMID: 33960779 DOI: 10.1021/acs.joc.1c00456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Enantiopure (R) and (S) cyclic α,α-disubstituted amino acid derivatives displaying a δ-valerolactam side chain were prepared from a common isoxazolidine precursor. The (R)-configured δ-valerolactam 11 was converted into diastereoisomeric pseudopeptides to investigate its ability to induce secondary structures in peptidomimetics. Conformational studies of these pseudopeptides were carried out in the solid state (X-ray diffraction), in solution (NMR analyses), and in silico (computer-aided conformational analysis), which demonstrated that such quaternary amino acids induce β-turn conformations stable enough to be retained in polar media (DMSO). Incorporation of this new type of α,α-disubstituted amino acid into a representative pseudopeptidic sequence by N- then C-elongation and N-debenzylation is also described herein and could serve for the synthesis of various structured peptidomimetics.
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Affiliation(s)
- Xiaofei Zhang
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France.,Univ. Grenoble Alpes, DCM, F-38000 Grenoble, France.,CNRS, DCM, F-38000 Grenoble, France
| | - Romain Ligny
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
| | - Sopa Chewchanwuttiwong
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France.,Prince of Songkla University, Faculty of Science and Industrial Technology Surat Thani 84000, Thailand
| | - Rawan Hadade
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
| | - Mathieu Y Laurent
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
| | - Arnaud Martel
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
| | - Corentin Jacquemmoz
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
| | - Jérôme Lhoste
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
| | - Sullivan Bricaud
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
| | - Sandrine Py
- Univ. Grenoble Alpes, DCM, F-38000 Grenoble, France.,CNRS, DCM, F-38000 Grenoble, France
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans (IMMM) - UMR 6283 CNRS-Le Mans Université, Equipe Méthodologie et Synthèse Organique, F-72085 Le Mans Cedex 09, France
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6
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Locarno S, Argentiere S, Ruffoni A, Maggioni D, Soave R, Bucci R, Erba E, Lenardi C, Gelmi ML, Clerici F. Self-assembled hydrophobic Ala-Aib peptide encapsulating curcumin: a convenient system for water insoluble drugs. RSC Adv 2020; 10:9964-9975. [PMID: 35498617 PMCID: PMC9050355 DOI: 10.1039/c9ra10981a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 03/03/2020] [Indexed: 12/03/2022] Open
Abstract
The exploitation of self-assembled systems to improve the solubility of drugs is getting more and more attention. Among the different types of self-assembled biomaterials, peptides and in particular peptides containing non-coded amino acids (NCAPs) are promising because their use opens the door to more stable materials inducing increased stability to proteolysis. New classes of NCAP, Ac-Ala-X-Ala-Aib-AlaCONH2 (X = alpha-aminoisobutyric acid (Aib) or X = cyclopentane amino acid (Ac5c)) have been prepared and the correlation between the different secondary peptide structure and solvent (i.e. CD3CN, CD3OH, H2O/D2O) verified by NMR. Furthermore, the formation of a nanocolloidal system in water was deeply studied by DLS and the morphology of the obtained spherical aggregates with nanometric dimensions was assessed by TEM. Aib containing pentapeptide was selected for greater ease of synthesis. Its ability to encapsulate curcumin, as a model insoluble drug molecule, was investigated using fluorescence emission and confocal microscopy analyses. Two different approaches were used to study the interaction between curcumin and peptide aggregates. In the first approach peptide aggregates were formed in the presence of curcumin, while in the second approach curcumin was added to the already formed peptide aggregates. We succeeded in our challenge by using the second approach and 53.8% of added curcumin had been encapsulated.
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Affiliation(s)
- Silvia Locarno
- Department of Pharmaceutical Sciences, General and Organic Chemistry Section "A. Marchesini", University of Milan Via Venezian 21 20133 Milano Italy
| | - Simona Argentiere
- CIMAINA, Interdisciplinary Center for Nanostructured Materials and Interfaces, Department of Physics Via Celoria 16 20133 Milano Italy
| | | | - Daniela Maggioni
- Department of Chemistry, Università Degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Raffaella Soave
- Institute of Chemical Sciences and Technologies "Giulio Natta", Italian National Research Council, CNR-SCITEC Via Golgi 19 20133 Milano Italy
| | - Raffaella Bucci
- Department of Pharmaceutical Sciences, General and Organic Chemistry Section "A. Marchesini", University of Milan Via Venezian 21 20133 Milano Italy
| | - Emanuela Erba
- Department of Pharmaceutical Sciences, General and Organic Chemistry Section "A. Marchesini", University of Milan Via Venezian 21 20133 Milano Italy
| | - Cristina Lenardi
- CIMAINA, Interdisciplinary Center for Nanostructured Materials and Interfaces, Department of Physics Via Celoria 16 20133 Milano Italy
| | - Maria Luisa Gelmi
- Department of Pharmaceutical Sciences, General and Organic Chemistry Section "A. Marchesini", University of Milan Via Venezian 21 20133 Milano Italy
| | - Francesca Clerici
- Department of Pharmaceutical Sciences, General and Organic Chemistry Section "A. Marchesini", University of Milan Via Venezian 21 20133 Milano Italy
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7
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Bucci R, Contini A, Clerici F, Beccalli EM, Formaggio F, Maffucci I, Pellegrino S, Gelmi ML. Fluoro-Aryl Substituted α,β 2,3-Peptides in the Development of Foldameric Antiparallel β-Sheets: A Conformational Study. Front Chem 2019; 7:192. [PMID: 31001518 PMCID: PMC6454073 DOI: 10.3389/fchem.2019.00192] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/13/2019] [Indexed: 01/08/2023] Open
Abstract
α,β2,3-Disteroisomeric foldamers of general formula Boc(S-Ala-β-2R,3R-Fpg)nOMe or Boc(S-Ala-β-2S,3S-Fpg)nOMe were prepared from both enantiomers of syn H-2-(2-F-Phe)-h-PheGly-OH (named β-Fpg) and S-alanine. Our peptides show two appealing features for biomedical applications: the presence of fluorine, attractive for non-covalent interactions, and aryl groups, crucial for π-stacking. A conformational study was performed, using IR, NMR and computational studies of diastereoisomeric tetra- and hexapeptides containing the β2,3-amino acid in the R,R- and S,S-stereochemistry, respectively. We found that the stability of peptide conformation is dependent on the stereochemistry of the β-amino acid. Combining S-Ala with β-2R,3R-Fpg, a stable extended β-strand conformation was obtained. Furthermore, β-2R,3R-Fpg containing hexapeptide self-assembles to form antiparallel β-sheet structure stabilized by intermolecular H-bonds and π,π-interactions. These features make peptides containing the β2,3-fluoro amino acid very appealing for the development of bioactive proteolytically stable foldameric β-sheets as modulators of protein-protein interaction (PPI).
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Affiliation(s)
- Raffaella Bucci
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, Milan, Italy
| | - Alessandro Contini
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, Milan, Italy
| | - Francesca Clerici
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, Milan, Italy
| | - Egle Maria Beccalli
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, Milan, Italy
| | | | - Irene Maffucci
- CNRS UMR 7025, Génie Enzymatique et Cellulaire, Centre de Recherche de Royallieu, Compiègne, France.,Génie Enzymatique et Cellulaire, Centre de Recherche de Royallieu, Sorbonne Universités, Université de Technologie de Compiègne, Compiègne, France
| | - Sara Pellegrino
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, Milan, Italy
| | - Maria Luisa Gelmi
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, Milan, Italy
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8
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Oliva F, Bucci R, Tamborini L, Pieraccini S, Pinto A, Pellegrino S. Bicyclic Pyrrolidine-Isoxazoline γ Amino Acid: A Constrained Scaffold for Stabilizing α-Turn Conformation in Isolated Peptides. Front Chem 2019; 7:133. [PMID: 30937302 PMCID: PMC6431668 DOI: 10.3389/fchem.2019.00133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 02/20/2019] [Indexed: 12/22/2022] Open
Abstract
Unnatural amino acids have tremendously expanded the folding possibilities of peptides and peptide mimics. While α,α-disubstituted and β-amino acids are widely studied, γ-derivatives have been less exploited. Here we report the conformational study on the bicyclic unnatural γ amino acid, 4,5,6,6a-tetrahydro-3aH-pyrrolo[3,4-d]isoxazole-3-carboxylic acid 1. In model peptides, the (+)-(3aR6aS)-enantiomer is able to stabilize α-turn conformation when associated to glycine, as showed by 1H-NMR, FT-IR, and circular dichroism experiments, and molecular modeling studies. α-turn is a structural motif occurring in many biologically active protein sites, although its stabilization on isolated peptides is quite uncommon. Our results make the unnatural γ-amino acid 1 of particular interest for the development of bioactive peptidomimetics.
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Affiliation(s)
| | - Raffaella Bucci
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Lucia Tamborini
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | | | - Andrea Pinto
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Sara Pellegrino
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
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9
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Li H, Jia P, Qian N, Li S, Jiao P. Simultaneous Construction of Planar and Central Chiralities as Well as Unprecedented Axial Chirality on and around a Ferrocene Backbone. J Org Chem 2019; 84:2817-2828. [PMID: 30703320 DOI: 10.1021/acs.joc.8b03221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Simultaneous generation of planar, central and axial chiralities on and around a ferrocene backbone via a d-phenylglycinol-induced intramolecular iminium cyclization was disclosed, which is rare and differs from known methods. A series of chiral spiro[cyclopentadienyl-1,2,3,3a-tetrahydropentalenyliron(II)-1,2'-pyrrolidine] derivatives were prepared acording to the new method, and their structures were characterized unambiguously. The axial chirality caused by the ferrocene backbone and the rigid spiral structure was verified by NOESY and variable-temperature NMR experiments and single-crystal XRD analyses. Mechanism for the stereoselective iminium cyclization reaction was suggested, which was influenced by steric hindrance and hydrogen bonding.
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Affiliation(s)
- Hongjie Li
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , P.R. China
| | - Peijing Jia
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , P.R. China
| | - Naixin Qian
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , P.R. China
| | - Shasha Li
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , P.R. China
| | - Peng Jiao
- Key Laboratory of Radiopharmaceuticals, College of Chemistry , Beijing Normal University , Beijing 100875 , P.R. China
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10
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Bucci R, Contini A, Clerici F, Pellegrino S, Gelmi ML. From glucose to enantiopure morpholino β-amino acid: a new tool for stabilizing γ-turns in peptides. Org Chem Front 2019. [DOI: 10.1039/c8qo01116h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
“Environmentally sustainable” synthesis of a new enantiopure morpholino β-amino acid from glucose: a new tool for exotic peptide architectures.
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Affiliation(s)
- Raffaella Bucci
- DISFARM-Sez
- Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Alessandro Contini
- DISFARM-Sez
- Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Francesca Clerici
- DISFARM-Sez
- Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Sara Pellegrino
- DISFARM-Sez
- Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Maria Luisa Gelmi
- DISFARM-Sez
- Chimica Generale e Organica “A. Marchesini”
- Università degli Studi di Milano
- 20133 Milano
- Italy
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11
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Gracia-Vitoria J, Osante I, Cativiela C, Merino P, Tejero T. Synthesis of Enantiopure Constrained α,β-Cycloaliphatic Cystines via Diels-Alder Reaction with Homochiral Thiazolines. J Org Chem 2018; 83:12471-12485. [PMID: 30176729 DOI: 10.1021/acs.joc.8b01698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The behavior of homochiral 2,3-dihydrothiazoles, easily available from l-cysteine in Diels-Alder reaction with different dienes, "en route" to sterically constrained modified cystines, has been studied. The oxidation level of the sulfur atom of the heterocyclic ring was crucial for the course of the reaction. Whereas 2,3-dihydrothiazoles did not lead to Diels-Alder adducts, 1-oxide and 1,1-dioxide derivatives afforded the exo adduct enantiopurely in high yields and diastereoselectivities. Further elaboration of the resulting adducts provided conformationally restricted quaternary cystines. DFT calculations correctly predict both the reactivity and stereoselectivity observed experimentally.
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Affiliation(s)
- Jaime Gracia-Vitoria
- Departamento de Química Orgánica , Instituto de Síntesis Química y Catálisis Homogénea ISQCH, CSIC-Universidad de Zaragoza , Zaragoza 50009 , Spain
| | - Iñaki Osante
- Departamento de Química Orgánica , Instituto de Síntesis Química y Catálisis Homogénea ISQCH, CSIC-Universidad de Zaragoza , Zaragoza 50009 , Spain
| | - Carlos Cativiela
- Departamento de Química Orgánica , Instituto de Síntesis Química y Catálisis Homogénea ISQCH, CSIC-Universidad de Zaragoza , Zaragoza 50009 , Spain
| | - Pedro Merino
- Instituto de Biocomputacion y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza , Zaragoza 50009 , Spain
| | - Tomás Tejero
- Departamento de Química Orgánica , Instituto de Síntesis Química y Catálisis Homogénea ISQCH, CSIC-Universidad de Zaragoza , Zaragoza 50009 , Spain
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12
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Bucci R, Giofré S, Clerici F, Contini A, Pinto A, Erba E, Soave R, Pellegrino S, Gelmi ML. Tetrahydro-4H-(pyrrolo[3,4-d]isoxazol-3-yl)methanamine: A Bicyclic Diamino Scaffold Stabilizing Parallel Turn Conformations. J Org Chem 2018; 83:11493-11501. [DOI: 10.1021/acs.joc.8b01299] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Raffaella Bucci
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Sabrina Giofré
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Francesca Clerici
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Alessandro Contini
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Andrea Pinto
- DeFENS, Sezione di Scienze Chimiche e Biomolecolari, Università degli Studi Milano, Via Celoria 2, Milano 20133, Italy
| | - Emanuela Erba
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Raffaella Soave
- CNR-Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, Milano 20133, Italy
| | - Sara Pellegrino
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
| | - Maria Luisa Gelmi
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”, Università degli Studi Milano Via Venezian 21, Milano 20133, Italy
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13
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Chalyk BA, Hrebeniuk KV, Gavrilenko KS, Shablykin OV, Yanshyna OO, Bash D, Mykhailiuk PK, Liashuk OS, Grygorenko OO. Synthesis of Bi- and Polyfunctional Isoxazoles from Amino Acid Derived Halogenoximes and Active Methylene Nitriles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bohdan A. Chalyk
- Enamine Ltd.; Chervonotkatska Street 78 02094, Ukraine Kyiv Ukraine
| | | | - Konstantin S. Gavrilenko
- Enamine Ltd.; Chervonotkatska Street 78 02094, Ukraine Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Oleh V. Shablykin
- Institute of Bioorganic Chemistry & Petrochemistry; NAS of Ukraine; Murmanska Street 1 02660 Kyiv Ukraine
| | - Oksana O. Yanshyna
- Enamine Ltd.; Chervonotkatska Street 78 02094, Ukraine Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Daniil Bash
- Enamine Ltd.; Chervonotkatska Street 78 02094, Ukraine Kyiv Ukraine
| | - Pavel K. Mykhailiuk
- Enamine Ltd.; Chervonotkatska Street 78 02094, Ukraine Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Oleksandr S. Liashuk
- Enamine Ltd.; Chervonotkatska Street 78 02094, Ukraine Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
| | - Oleksandr O. Grygorenko
- Enamine Ltd.; Chervonotkatska Street 78 02094, Ukraine Kyiv Ukraine
- Taras Shevchenko National University of Kyiv; Volodymyrska Street 60 01601 Kyiv Ukraine
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14
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Bakthadoss M, Kumar PV, Reddy TT, Sharada DS. Solvent and catalyst free ring expansion of indoles: a simple synthesis of highly functionalized benzazepines. Org Biomol Chem 2018; 16:8160-8168. [DOI: 10.1039/c8ob01825a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly functionalized benzazepines have been synthesized from indoles via ring expansion. Ring contraction of benzazepines to indole derivatives has also been acheived in excellent yields.
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Affiliation(s)
| | - Polu Vijay Kumar
- Department of Chemistry
- Pondicherry University
- Pondicherry – 605 014
- India
| | | | - Duddu S. Sharada
- Department of Chemistry
- Indian Institute of Technology
- Hyderabad, Kandi
- India
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15
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Spedding H, Karuso P, Liu F. Synthesis of Substituted Oxo-Azepines by Regio- and Diastereoselective Hydroxylation. Molecules 2017; 22:molecules22111871. [PMID: 29088108 PMCID: PMC6150284 DOI: 10.3390/molecules22111871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 10/26/2017] [Accepted: 10/27/2017] [Indexed: 11/16/2022] Open
Affiliation(s)
- Harold Spedding
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia.
| | - Peter Karuso
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia.
| | - Fei Liu
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia.
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16
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Bucci R, Bonetti A, Clerici F, Contini A, Nava D, Pellegrino S, Tessaro D, Gelmi ML. Tandem Tetrahydroisoquinoline-4-carboxylic Acid/β-Alanine as a New Construct Able To Induce a Flexible Turn. Chemistry 2017; 23:10822-10831. [PMID: 28467649 DOI: 10.1002/chem.201701045] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Indexed: 12/21/2022]
Abstract
Tetrahydroisoquinoline-4-carboxylic acid, a constrained β2 -amino acid named β-TIC, was synthesised for the first time in enantiopure form. The biocatalytic route applied herein represents one of the few successful examples of enzymatic resolution of β2 -amino acids. Model tetrapeptides, namely, Fmoc-l-Ala-β-TIC-β-Ala-l-Val-OBn (Fmoc=fluorenylmethyloxycarbonyl, Bn=benzyl), containing both isomers of β-TIC, were prepared. Both computational and NMR spectroscopy studies were performed. A reverse-turn conformation was observed in the case of (R)-β-TIC enantiomer that was obtained in 99 % enantiomeric excess by enzymatic resolution. The β-TIC/β-Ala construct represents the first example of a flexible turn mimetic containing a cyclic and an acyclic β-amino acid. Furthermore, the presence of an aromatic ring of β-TIC could facilitate non-covalent interactions to increase the potential of this scaffold for the preparation of protein-protein interaction modulators.
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Affiliation(s)
- Raffaella Bucci
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi Milano, Via Venezian 21, 20133, Milano, Italy
| | - Andrea Bonetti
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi Milano, Via Venezian 21, 20133, Milano, Italy
| | - Francesca Clerici
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi Milano, Via Venezian 21, 20133, Milano, Italy
| | - Alessandro Contini
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi Milano, Via Venezian 21, 20133, Milano, Italy
| | - Donatella Nava
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi Milano, Via Venezian 21, 20133, Milano, Italy
| | - Sara Pellegrino
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi Milano, Via Venezian 21, 20133, Milano, Italy
| | - Davide Tessaro
- Department of Chemistry, Materials and, Chemical Engineering "G. Natta", Politecnico di Milano, p.za L. da Vinci 32, 20133, Milano, Italy
| | - Maria Luisa Gelmi
- DISFARM, Sezione di Chimica Generale e Organica "A. Marchesini", Università degli Studi Milano, Via Venezian 21, 20133, Milano, Italy
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17
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Fanelli R, Berthomieu D, Didierjean C, Doudouh A, Lebrun A, Martinez J, Cavelier F. Hydrophobic α,α-Disubstituted Disilylated TESDpg Induces Incipient 310-Helix in Short Tripeptide Sequence. Org Lett 2017; 19:2937-2940. [DOI: 10.1021/acs.orglett.7b01172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Roberto Fanelli
- Institut
des Biomolécules Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier, ENSCM, Place Eugène Bataillon, Montpellier 34095 Cedex 5, France
| | - Dorothée Berthomieu
- Laboratoire
des Matériaux Avancés pour la Catalyse et la Santé,
Institut Charles Gerhardt, UMR-5253, CNRS, Université Montpellier, ENSCM, 8, rue de l’Ecole Normale, Montpellier 34296 Cedex 5, France
| | - Claude Didierjean
- CRM2,
UMR-7036, CNRS, Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, France
| | - Abdelatif Doudouh
- CRM2,
UMR-7036, CNRS, Université de Lorraine, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, France
| | - Aurélien Lebrun
- Institut
des Biomolécules Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier, ENSCM, Place Eugène Bataillon, Montpellier 34095 Cedex 5, France
| | - Jean Martinez
- Institut
des Biomolécules Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier, ENSCM, Place Eugène Bataillon, Montpellier 34095 Cedex 5, France
| | - Florine Cavelier
- Institut
des Biomolécules Max Mousseron, IBMM, UMR-5247, CNRS, Université Montpellier, ENSCM, Place Eugène Bataillon, Montpellier 34095 Cedex 5, France
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18
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Clerici F, Erba E, Gelmi ML, Pellegrino S. Non-standard amino acids and peptides: From self-assembly to nanomaterials. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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19
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Maffucci I, Contini A. An Updated Test of AMBER Force Fields and Implicit Solvent Models in Predicting the Secondary Structure of Helical, β-Hairpin, and Intrinsically Disordered Peptides. J Chem Theory Comput 2016; 12:714-27. [DOI: 10.1021/acs.jctc.5b01211] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Irene Maffucci
- Dipartimento di Scienze Farmaceutiche
− Sezione di Chimica Generale e Organica “Alessandro
Marchesini”, Università degli Studi di Milano, Via
Venezian, 21 20133 Milano, Italy
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche
− Sezione di Chimica Generale e Organica “Alessandro
Marchesini”, Università degli Studi di Milano, Via
Venezian, 21 20133 Milano, Italy
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20
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Pellegrino S, Facchetti G, Contini A, Gelmi ML, Erba E, Gandolfi R, Rimoldi I. Ctr-1 Mets7 motif inspiring new peptide ligands for Cu(i)-catalyzed asymmetric Henry reactions under green conditions. RSC Adv 2016. [DOI: 10.1039/c6ra16255j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Hybrid catalysts were developed from the Cu(i) binding domain of Ctr1 protein and their activity was evaluated in an asymmetric Henry reaction.
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Affiliation(s)
- Sara Pellegrino
- Dipartimento di Scienze Farmaceutiche
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Giorgio Facchetti
- Dipartimento di Scienze Farmaceutiche
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Maria Luisa Gelmi
- Dipartimento di Scienze Farmaceutiche
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Emanuela Erba
- Dipartimento di Scienze Farmaceutiche
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Raffaella Gandolfi
- Dipartimento di Scienze Farmaceutiche
- Università degli Studi di Milano
- 20133 Milano
- Italy
| | - Isabella Rimoldi
- Dipartimento di Scienze Farmaceutiche
- Università degli Studi di Milano
- 20133 Milano
- Italy
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21
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Zhu W, Zhao L, Wang MX. Synthesis of 2,3-Dihydro-1H-azepine and 1H-Azepin-2(3H)-one Derivatives From Intramolecular Condensation between Stable Tertiary Enamides and Aldehydes. J Org Chem 2015; 80:12047-57. [DOI: 10.1021/acs.joc.5b02021] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Wenju Zhu
- MOE Key Laboratory of Bioorganic
Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Liang Zhao
- MOE Key Laboratory of Bioorganic
Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Mei-Xiang Wang
- MOE Key Laboratory of Bioorganic
Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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22
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Maffucci I, Clayden J, Contini A. Origin of Helical Screw Sense Selectivity Induced by Chiral Constrained Cα-Tetrasubstituted α-Amino Acids in Aib-based Peptides. J Phys Chem B 2015; 119:14003-13. [PMID: 26457452 DOI: 10.1021/acs.jpcb.5b07050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The mechanisms behind the propensity of chiral constrained Cα-tetrasubstituted amino acids (cCTAAs) to induce one particular helical screw sense, when included in the Ac-Aib2-cCTAA-Aib2-NHMe peptide model, were studied through replica exchange molecular dynamics, potential of mean force, and quantum theory of atoms in molecules calculations. We observed that cCTAAs exert their effect on helical screw sense selectivity through the positioning of the side chain to generate steric hindrance in either the (-x, +y, +z) or (+x, +y, -z) sectors of a right-handed 3D Cartesian space, where the z axis corresponds to the axis of the helix and the Cα lies on the +y semiaxis (0, +y, 0). The different strengthening of the noncovalent interactions, also comprising C-H···O interactions, exerted by the cCTAA in the right-handed or left-handed helix was also found important to define the preference of a cCTAA for a particular helix screw sense.
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Affiliation(s)
- Irene Maffucci
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
| | - Jonathan Clayden
- School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, U.K
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini", Università degli Studi di Milano , Via Venezian, 21, 20133 Milano, Italy
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23
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Bonetti A, Pellegrino S, Das P, Yuran S, Bucci R, Ferri N, Meneghetti F, Castellano C, Reches M, Gelmi ML. Dipeptide Nanotubes Containing Unnatural Fluorine-Substituted β(2,3)-Diarylamino Acid and L-Alanine as Candidates for Biomedical Applications. Org Lett 2015; 17:4468-71. [PMID: 26335611 DOI: 10.1021/acs.orglett.5b02132] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The synthesis and the structural characterization of dipeptides composed of unnatural fluorine-substituted β(2,3)-diarylamino acid and L-alanine are reported. Depending on the stereochemistry of the β amino acid, these dipeptides are able to self-assemble into proteolytic stable nanotubes. These architectures were able to enter the cell and locate in the cytoplasmic/perinuclear region and represent interesting candidates for biomedical applications.
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Affiliation(s)
| | | | - Priyadip Das
- Institute of Chemistry, The Hebrew University of Jerusalem , Jerusalem 91904, Israel
| | - Sivan Yuran
- Institute of Chemistry, The Hebrew University of Jerusalem , Jerusalem 91904, Israel
| | | | | | | | | | - Meital Reches
- Institute of Chemistry, The Hebrew University of Jerusalem , Jerusalem 91904, Israel
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