1
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Vaghi F, Facchetti G, Rimoldi I, Bottiglieri M, Contini A, Gelmi ML, Bucci R. Highly efficient morpholine-based organocatalysts for the 1,4-addition reaction between aldehydes and nitroolefins: an unexploited class of catalysts. Front Chem 2023; 11:1233097. [PMID: 37638101 PMCID: PMC10451084 DOI: 10.3389/fchem.2023.1233097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 07/24/2023] [Indexed: 08/29/2023] Open
Abstract
Many studies have demonstrated how the pyrrolidine nucleus is more efficient than the corresponding piperidine or morpholine as organocatalysts in the condensation of aldehydes with electrophiles via enamine. Focussing on morpholine-enamines, their low reactivity is ascribed to the presence of oxygen on the ring and to the pronounced pyramidalisation of nitrogen, decreasing the nucleophilicity of the enamine. Thus, the selection of efficient morpholine organocatalysts appears to be a difficult challenge. Herein, we reported on the synthesis of new organocatalysts belonging to the class of ß-morpholine amino acids that were tested in a model reaction, i.e., the 1,4-addition reaction of aldehydes to nitroolefins. Starting from commercially available amino acids and epichlorohydrin, we designed an efficient synthesis for the aforementioned catalysts, controlling the configuration and the substitution pattern. Computational studies indeed disclosed the transition state of the reaction, explaining why, despite all the limitations of the morpholine ring for enamine catalysis, our best catalyst works efficiently, affording condensation products with excellent yields, diastereoselection and good-to-exquisite enantioselectivity.
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Affiliation(s)
| | | | | | | | | | | | - Raffaella Bucci
- Dipartimento di Scienze Farmaceutiche, DISFARM, Sezione Chimica Generale e Organica “A. Marchesini”, Università degli Studi di Milano, Milan, Italy
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2
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Coppa C, Bazzoli A, Barkhordari M, Contini A. Accelerated Molecular Dynamics for Peptide Folding: Benchmarking Different Combinations of Force Fields and Explicit Solvent Models. J Chem Inf Model 2023; 63:3030-3042. [PMID: 37163419 DOI: 10.1021/acs.jcim.3c00138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Accelerated molecular dynamics (aMD) protocols were assessed on predicting the secondary structure of eight peptides, of which two are helical, three are β-hairpins, and three are disordered. Protocols consisted of combinations of three force fields (ff99SB, ff14SB, ff19SB) and two explicit solvation models (TIP3P and OPC), and were evaluated in two independent aMD simulations, one starting from an extended conformation, the other starting from a misfolded conformation. The results of these analyses indicate that all three combinations performed well on helical peptides. As for β-hairpins, ff19SB performed well with both solvation methods, with a slight preference for the TIP3P solvation model, even though performance was dependent on both peptide sequence and initial conformation. The ff19SB/OPC combination had the best performance on intrinsically disordered peptides. In general, ff14SB/TIP3P suffered the strongest helical bias.
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Affiliation(s)
- Crescenzo Coppa
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini", Università degli Studi di Milano, Via Venezian, 21, 20133 Milano, Italy
| | - Andrea Bazzoli
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini", Università degli Studi di Milano, Via Venezian, 21, 20133 Milano, Italy
| | - Maral Barkhordari
- 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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3
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Forlano N, Bucci R, Contini A, Venanzi M, Placidi E, Gelmi ML, Lettieri R, Gatto E. Non-Conventional Peptide Self-Assembly into a Conductive Supramolecular Rope. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13020333. [PMID: 36678086 PMCID: PMC9867255 DOI: 10.3390/nano13020333] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 05/27/2023]
Abstract
Structures composed of alternating α and β amino acids can give rise to peculiar secondary structural motifs, which could self-assemble into complex structures of controlled geometries. This work describes the self-assembly properties of an α,β-peptide, containing three units of syn H2-(2-F-Phe)-h-PheGly-OH, able to self-organize on surfaces into a fascinating supramolecular rope. This material was characterized by AFM, electronic conduction and fluorescence measurements. Molecular dynamics simulations showed that this hexapeptide can self-assemble into an antiparallel β-sheet layer, stabilized by intermolecular H-bonds, which, in turn, can self-assemble into many side-by-side layers, due to π-π interactions. As a matter of fact, we demonstrated that in this system, the presence of aromatic residues at the intramolecular interface promoted by the alternation of α,β-amino-acids in the primary sequence, endorses the formation of a super-secondary structure where the aromatic groups are close to each other, conferring to the system good electron conduction properties. This work demonstrates the capability and future potential of designing and fabricating distinctive nanostructures and efficient bioelectronic interfaces based on an α,β-peptide, by controlling structure and interaction processes beyond those obtained with α- or β-peptides alone.
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Affiliation(s)
- Nicola Forlano
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Raffaella Bucci
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Alessandro Contini
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Mariano Venanzi
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Ernesto Placidi
- Department of Physics, Sapienza University of Rome, P.le Aldo Moro 2, 00185 Rome, Italy
| | - Maria Luisa Gelmi
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy
| | - Raffaella Lettieri
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
| | - Emanuela Gatto
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Roma, Italy
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4
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Impresari E, Bossi A, Lumina EM, Ortenzi MA, Kothuis JM, Cappelletti G, Maggioni D, Christodoulou MS, Bucci R, Pellegrino S. Fatty Acids/Tetraphenylethylene Conjugates: Hybrid AIEgens for the Preparation of Peptide-Based Supramolecular Gels. Front Chem 2022; 10:927563. [PMID: 36003614 PMCID: PMC9393247 DOI: 10.3389/fchem.2022.927563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/22/2022] [Indexed: 11/13/2022] Open
Abstract
Aggregation-induced emissive materials are gaining particular attention in the last decades due to their wide application in different fields, from optical devices to biomedicine. In this work, compounds having these kinds of properties, composed of tetraphenylethylene scaffold combined with fatty acids of different lengths, were synthesized and characterized. These molecules were found able to self-assemble into different supramolecular emissive structures depending on the chemical composition and water content. Furthermore, they were used as N-terminus capping agents in the development of peptide-based materials. The functionalization of a 5-mer laminin-derived peptide led to the obtainment of luminescent fibrillary materials that were not cytotoxic and were able to form supramolecular gels in aqueous environment.
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Affiliation(s)
- Elisa Impresari
- DISFARM, Dipartimento Di Scienze Farmaceutiche, Sezione Chimica Generale e Organica “A. Marchesini”, Università degli Studi di Milano, Milan, Italy
| | - Alberto Bossi
- Istituto di Scienze e Tecnologie Chimiche “G.Natta”, Consiglio Nazionale delle Ricerche (CNR-SCITEC), Milan, Italy
- SmartMatLab Center, Milan, Italy
| | - Edoardo Mario Lumina
- DISFARM, Dipartimento Di Scienze Farmaceutiche, Sezione Chimica Generale e Organica “A. Marchesini”, Università degli Studi di Milano, Milan, Italy
| | - Marco Aldo Ortenzi
- CRC Materiali Polimerici “LaMPo”, Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
| | | | | | - Daniela Maggioni
- Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
| | - Michael S. Christodoulou
- Departiment of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milan, Italy
| | - Raffaella Bucci
- DISFARM, Dipartimento Di Scienze Farmaceutiche, Sezione Chimica Generale e Organica “A. Marchesini”, Università degli Studi di Milano, Milan, Italy
| | - Sara Pellegrino
- DISFARM, Dipartimento Di Scienze Farmaceutiche, Sezione Chimica Generale e Organica “A. Marchesini”, Università degli Studi di Milano, Milan, Italy
- *Correspondence: Sara Pellegrino,
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5
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Bucci R, Vaghi F, Di Lorenzo D, Anastasi F, Broggini G, Lo Presti L, Contini A, Gelmi ML. A Non‐coded β2,2‐Amino Acid with Isoxazoline Core Able to Stabilize Peptides Folding Through an Unprecedented Hydrogen Bond. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Raffaella Bucci
- Università degli Studi di Milano: Universita degli Studi di Milano Dipartimento di Scienze Farmaceutiche ITALY
| | - Francesco Vaghi
- Università degli Studi di Milano: Universita degli Studi di Milano Dipartimento di Scienze Farmaceutiche ITALY
| | - Davide Di Lorenzo
- Università degli Studi di Milano: Universita degli Studi di Milano Dipartimento di Scienze Farmaceutiche ITALY
| | - Francesco Anastasi
- Università degli Studi di Milano: Universita degli Studi di Milano Dipartimento di Scienze Farmaceutiche ITALY
| | - Gianluigi Broggini
- Università degli Studi dell'Insubria Dipartimento di Scienza e Alta Tecnologia ITALY
| | - Leonardo Lo Presti
- Università degli Studi di Milano: Universita degli Studi di Milano Dipartimento di Chimica ITALY
| | - Alessandro Contini
- Università degli Studi di Milano: Universita degli Studi di Milano Dipartimento di Scienze Farmaceutiche ITALY
| | - Maria Luisa Gelmi
- Universita degli Studi di Milano DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini” Via Venezian 21 20133 Milano ITALY
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6
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Liu Z, Shi X, Shu W, Qi S, Wang X, He X. The effect of hydration and dehydration on the conformation, assembling behavior and photoluminescence of PBLG. SOFT MATTER 2022; 18:4396-4401. [PMID: 35635105 DOI: 10.1039/d2sm00344a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydration and dehydration play crucial roles in hydrophobic effects (HEs) and are yet to be understood. Poly(γ-benzyl-L-glutamate) (PBLG) homopolymers in THF/water with various water contents were investigated. We discovered that PBLG was hydrated at low water contents and adopted a helical conformation. The chain became dehydrated with increasing water content, which converted the PBLG100 helix to a PPII-helix. The variation in the conformation resulted in an alteration of the self-assembled morphologies from fibers to particles. For PBLG12 with a shorter chain, the chain underwent an α-to-β transition in the conformation due to dehydration as the water content increased, and correspondingly the morphologies varied from tapes to helical ribbons, and eventually to toroids at a higher water content. We also observed that this α-to-β transition is accompanied by an increase in intensity of the fluorescence, which is attributed to the through-space-conjugation of tightly packed phenyl groups within the β-sheet. The discovered effect of hydration and dehydration on the PBLG chain conformation, self-assembling behavior and optical function is essential for the innovation of polypeptide materials and understanding of water-mediated biological systems.
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Affiliation(s)
- Zhen Liu
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Xinjie Shi
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Wenchao Shu
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Shuo Qi
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
| | - Xiaosong Wang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N21 3G1, Canada.
| | - Xiaohua He
- School of Chemistry and Molecular Engineering, East China Normal University, No. 500 Dongchuan Road, shanghai 200241, China.
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7
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Papis M, Loro C, Penso M, Broggini G, Foschi F. Synthesis of Morpholino Nucleosides Starting From Enantiopure Glycidol. Org Chem Front 2022. [DOI: 10.1039/d2qo00400c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A protocol for the synthesis of modified morpholino monomers was performed in few steps through the condensation between 6-hydroxymethyl-morpholine acetal and nucleobases under Lewis acid conditions. The key common precursor...
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8
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Locarno S, Bucci R, Impresari E, Gelmi ML, Pellegrino S, Clerici F. Ultrashort Peptides and Gold Nanoparticles: Influence of Constrained Amino Acids on Colloidal Stability. Front Chem 2021; 9:736519. [PMID: 34660531 PMCID: PMC8517408 DOI: 10.3389/fchem.2021.736519] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/16/2021] [Indexed: 11/13/2022] Open
Abstract
Poor colloidal stability of gold nanoparticles (AuNPs) in physiological environments remains one of the major limitations that contribute to their difficult translation from bench to clinic. For this reason, an active research field is the development of molecules able to hamper AuNPs aggregation tendency in physiological environments. In this context, synthetic peptides are gaining an increased interest as an alternative to the use of biomacromolecules and polymers, due to their easiness of synthesis and their profitable pharmacokinetic profile. In this work, we reported on the use of ultrashort peptides containing conformationally constrained amino acids (AAs) for the stabilization of AuNPs. A small library of non-natural self-assembled oligopeptides were synthesized and used to functionalize spherical AuNPs of 20 nm diameter, via the ligand exchange method. The aim was to investigate the role of the constrained AA, the anchor point (at C- or N-terminus) and the peptide length on their potential use as gold binding motif. Ultrashort Aib containing peptides were identified as effective tools for AuNPs colloidal stabilization. Furthermore, peptide coated AuNPs were found to be storable as powders without losing the stabilization properties once re-dispersed in water. Finally, the possibility to exploit the developed systems for binding proteins via molecular recognition was also evaluated using biotin as model.
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Affiliation(s)
- Silvia Locarno
- Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, Milano, Italy
| | - Raffaella Bucci
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica ‘‘A. Marchesini”, Università degli Studi di Milano, Milano, Italy
| | - Elisa Impresari
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica ‘‘A. Marchesini”, Università degli Studi di Milano, Milano, Italy
| | - Maria Luisa Gelmi
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica ‘‘A. Marchesini”, Università degli Studi di Milano, Milano, Italy
| | - Sara Pellegrino
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica ‘‘A. Marchesini”, Università degli Studi di Milano, Milano, Italy
| | - Francesca Clerici
- DISFARM-Dipartimento di Scienze Farmaceutiche, Sezione Chimica Generale e Organica ‘‘A. Marchesini”, Università degli Studi di Milano, Milano, Italy
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9
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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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10
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Giofrè S, Molteni L, Nava D, Lo Presti L, Beccalli EM. Enantio‐ and Regioselective Palladium(II)‐Catalyzed Dioxygenation of (Aza‐)Alkenols. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sabrina Giofrè
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini” Università degli Studi di Milano Via Venezian 21 20133 Milano Italy
| | - Letizia Molteni
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini” Università degli Studi di Milano Via Venezian 21 20133 Milano Italy
| | - Donatella Nava
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini” Università degli Studi di Milano Via Venezian 21 20133 Milano Italy
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Egle Maria Beccalli
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini” Università degli Studi di Milano Via Venezian 21 20133 Milano Italy
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11
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Giofrè S, Molteni L, Nava D, Lo Presti L, Beccalli EM. Enantio- and Regioselective Palladium(II)-Catalyzed Dioxygenation of (Aza-)Alkenols. Angew Chem Int Ed Engl 2021; 60:21723-21727. [PMID: 34387928 PMCID: PMC8518864 DOI: 10.1002/anie.202109312] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Indexed: 11/23/2022]
Abstract
An oxidative Pd-catalyzed intra-intermolecular dioxygenation of (aza-)alkenols has been reported, with total regioselectivity. To study the stereoselectivity, different chiral ligands as well as different hypervalent-iodine compounds have been compared. In particular, by using a C-6 modified pyridinyl-oxazoline (Pyox) ligand and hypervalent iodine bearing an aromatic ring, an excellent enantio- and diastereoselectivity has been achieved.
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Affiliation(s)
- Sabrina Giofrè
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”Università degli Studi di MilanoVia Venezian 2120133MilanoItaly
| | - Letizia Molteni
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”Università degli Studi di MilanoVia Venezian 2120133MilanoItaly
| | - Donatella Nava
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”Università degli Studi di MilanoVia Venezian 2120133MilanoItaly
| | - Leonardo Lo Presti
- Dipartimento di Chimica, Università degli Studi di MilanoVia Golgi 1920133MilanoItaly
| | - Egle Maria Beccalli
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini”Università degli Studi di MilanoVia Venezian 2120133MilanoItaly
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12
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Bucci R, Foschi F, Loro C, Erba E, Gelmi ML, Pellegrino S. Fishing in the Toolbox of Cyclic Turn Mimics: a Literature Overview of the Last Decade. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100244] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Raffaella Bucci
- Dipartimento di Scienze farmaceutiche,DISFARM Università degli Studi di Milano Via Venezian 21 Milano 20133 Italy
| | - Francesca Foschi
- Dipartimento di Scienze e Alta Tecnologie,DiSAT Università degli Studi dell'Insubria Via Valleggio 9 Como 20100 Italy
| | - Camilla Loro
- Dipartimento di Scienze e Alta Tecnologie,DiSAT Università degli Studi dell'Insubria Via Valleggio 9 Como 20100 Italy
| | - Emanuela Erba
- Dipartimento di Scienze farmaceutiche,DISFARM Università degli Studi di Milano Via Venezian 21 Milano 20133 Italy
| | - Maria Luisa Gelmi
- Dipartimento di Scienze farmaceutiche,DISFARM Università degli Studi di Milano Via Venezian 21 Milano 20133 Italy
| | - Sara Pellegrino
- Dipartimento di Scienze farmaceutiche,DISFARM Università degli Studi di Milano Via Venezian 21 Milano 20133 Italy
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13
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Contini A, Erba E, Bondavalli V, Barbiroli A, Gelmi ML, Romanelli A. Morpholino-based peptide oligomers: Synthesis and DNA binding properties. Biochem Biophys Res Commun 2021; 549:8-13. [PMID: 33652207 DOI: 10.1016/j.bbrc.2021.02.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 11/17/2022]
Abstract
The chemical structure of oligonucleotide analogues dictates the conformation of oligonucleotide analogue oligomers, their ability to hybridize complementary DNA and RNA, their stability to degradation and their pharmacokinetic properties. In a study aimed at investigating new analogues featuring a neutral backbone, we explored the ability of oligomers containing a morpholino-peptide backbone to bind oligonucleotides. Circular Dichroism studies revealed the ability of our oligomers to interact with DNA, molecular modelling studies revealed the interaction responsible for complex stabilization.
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Affiliation(s)
- Alessandro Contini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy
| | - Emanuela Erba
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy
| | - Valeria Bondavalli
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy
| | - Alberto Barbiroli
- DeFENS - Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente, Università degli Studi di Milano, Milano, Italy
| | - Maria Luisa Gelmi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy
| | - Alessandra Romanelli
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italy.
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