1
|
Alonci G, Boussard A, Savona M, Cordella F, Angelici G, Mocchi R, Sommatis S, Monticelli D. A LC-QTOF Method for the Determination of PEGDE Residues in Dermal Fillers. Gels 2023; 9:gels9050409. [PMID: 37233001 DOI: 10.3390/gels9050409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/28/2023] [Accepted: 05/09/2023] [Indexed: 05/27/2023] Open
Abstract
Hyaluronic acid is one of the most important ingredients in dermal fillers, where it is often cross-linked to gain more favorable rheological properties and to improve the implant duration. Poly(ethylene glycol) diglycidyl ether (PEGDE) has been recently introduced as a crosslinker because of its very similar chemical reactivity with the most-used crosslinker BDDE, while giving special rheological properties. Monitoring the amount of the crosslinker residues in the final device is always necessary, but in the case of PEGDE, no methods are available in literature. Here, we present an HPLC-QTOF method, validated according to the guidelines of the International Council on Harmonization, which enables the efficient routine examination of the PEGDE content in HA hydrogels.
Collapse
Affiliation(s)
| | - Anna Boussard
- Matex Lab Switzerland SA, 1228 Plan-les-Ouates, Switzerland
| | - Martina Savona
- Matex Lab Switzerland SA, 1228 Plan-les-Ouates, Switzerland
| | - Fabiana Cordella
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Roberto Mocchi
- UB-CARE S.r.l., Spin-Off University of Pavia, Via della Scienza 12, 27100 Pavia, Italy
| | - Sabrina Sommatis
- UB-CARE S.r.l., Spin-Off University of Pavia, Via della Scienza 12, 27100 Pavia, Italy
| | - Damiano Monticelli
- Department of Science and High Technology, University of Insubria, 22100 Como, Italy
| |
Collapse
|
2
|
Pollastrini M, Pasquinelli L, Górecki M, Balzano F, Cupellini L, Lipparini F, Uccello Barretta G, Marchetti F, Pescitelli G, Angelici G. A Unique and Stable Polyproline I Helix Sorted out from Conformational Equilibrium by Solvent Polarity. J Org Chem 2022; 87:13715-13725. [PMID: 36242553 PMCID: PMC9639007 DOI: 10.1021/acs.joc.2c01377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Polyproline I helical structures are often considered as the hidden face of their most famous geminal sibling, Polyproline II, as PPI is generally spotted only within a conformational equilibrium. We designed and synthesized a stable Polyproline I structure exploiting the striking tendency of (S)-indoline-2-carboxylic acid to drive the peptide bond conformation toward the cis amide isomer, when dissolved in polar solvents. The cooperative effect of only four amino acidic units is sufficient to form a preferential structure in solution. We shed light on this rare secondary structure with a thorough analysis of the spectroscopic and chiroptical properties of the tetramer, supported by X-ray crystallography and computational studies.
Collapse
Affiliation(s)
- Matteo Pollastrini
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Luca Pasquinelli
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Marcin Górecki
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy,Institute
of Organic Chemistry, Polish Academy of
Sciences, ul. Kasprzaka
44/52, Warsaw 01-224, Poland
| | - Federica Balzano
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Lorenzo Cupellini
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Filippo Lipparini
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Gloria Uccello Barretta
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Fabio Marchetti
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Gennaro Pescitelli
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy,
| | - Gaetano Angelici
- Dipartimento
di Chimica e Chimica Industriale, Università
di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy,
| |
Collapse
|
3
|
Angelici G, Bhattacharjee N, Pypec M, Jouffret L, Didierjean C, Jolibois F, Perrin L, Roy O, Taillefumier C. Unveiling the conformational landscape of achiral all- cis tert-butyl β-peptoids. Org Biomol Chem 2022; 20:7907-7915. [PMID: 36173021 DOI: 10.1039/d2ob01351g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and conformational study of N-substituted β-alanines with tert-butyl side chains is described. The oligomers prepared by submonomer synthesis and block coupling methods are up to 15 residues long and are characterised by amide bonds in the cis-conformation. A conformational study comprising experimental solution NMR spectroscopy, X-ray crystallography and molecular modeling shows that despite their intrinsic higher conformational flexibility compared to their α-peptoid counterparts, this family of achiral oligomers adopt preferred secondary structures including a helical conformation close to that described with (1-naphthyl)ethyl side chains but also a novel ribbon-like conformation.
Collapse
Affiliation(s)
- Gaetano Angelici
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | - Nicholus Bhattacharjee
- Université de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne, France
| | - Maxime Pypec
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | - Laurent Jouffret
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | | | - Franck Jolibois
- Université de Toulouse-INSA-UPS, LPCNO, CNRS UMR 5215, 135 av. Rangueil, F-31077, Toulouse, France
| | - Lionel Perrin
- Université de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne, France
| | - Olivier Roy
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | - Claude Taillefumier
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| |
Collapse
|
4
|
Pollastrini M, Lipparini F, Pasquinelli L, Balzano F, Barretta GU, Pescitelli G, Angelici G. A Proline Mimetic for the Design of New Stable Secondary Structures: Solvent-Dependent Amide Bond Isomerization of ( S)-Indoline-2-carboxylic Acid Derivatives. J Org Chem 2021; 86:7946-7954. [PMID: 34080867 PMCID: PMC8456495 DOI: 10.1021/acs.joc.1c00184] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
![]()
A thorough experimental and computational study on the conformational properties of
(S)-indoline-2-carboxylic acid derivatives has been conducted. Methyl
(S)-1-acetylindoline-2-carboxylate, both a mimetic of proline and
phenylalanine, shows a remarkable tendency toward the cis amide isomer
when dissolved in polar solvents. This behavior is opposite to the general preference of
proline for the trans isomer, making indoline-2-carboxylic acid a good
candidate for the design of different secondary structures and new materials.
Collapse
Affiliation(s)
- Matteo Pollastrini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Filippo Lipparini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Luca Pasquinelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Federica Balzano
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Gloria Uccello Barretta
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| |
Collapse
|
5
|
Evangelisti C, Angelici G, Casotti G, Fusini G, Ferreri M, Pardini LF, Carpita A. Total Synthesis of Asparenydiol by Two Sonogashira Cross-Coupling Reactions Promoted by Supported Pd and Cu Catalysts. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0039-1690852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Asparenydiol, which is an important natural compound with potential pharmacological activities, was synthesized through two Sonogashira cross-coupling reactions catalyzed by supported Pd and Cu catalysts and by a Mitsunobu etherification. The optimization of the Sonogashira couplings allowed the use of catalysts supported on different matrices with good results in terms of catalytic efficiency and yields.
Collapse
Affiliation(s)
| | - Gaetano Angelici
- Department of Chemistry and Industrial Chemistry, University of Pisa
| | - Gianluca Casotti
- Department of Chemistry and Industrial Chemistry, University of Pisa
| | - Graziano Fusini
- Department of Chemistry and Industrial Chemistry, University of Pisa
| | - Matteo Ferreri
- Department of Chemistry and Industrial Chemistry, University of Pisa
| | | | - Adriano Carpita
- Department of Chemistry and Industrial Chemistry, University of Pisa
| |
Collapse
|
6
|
Di Silvio S, Bologna F, Milli L, Giuri D, Zanna N, Castellucci N, Monari M, Calvaresi M, Górecki M, Angelici G, Tomasini C, Pescitelli G. Elusive π-helical peptide foldamers spotted by chiroptical studies. Org Biomol Chem 2020; 18:865-877. [PMID: 31845697 DOI: 10.1039/c9ob02313e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A series of oligomers containing alternate l-Ala and pGlu (pyroglutamic acid) both in the L and D form have been prepared and conformationally investigated by X-ray, NMR, UV/ECD, IR/VCD and molecular modelling. X-ray diffraction analysis was possible for the shortest oligomers LL-1 and LD-1. Molecular dynamics simulations of the oligomers demonstrated that the energy landscapes of the LL-series are broad. In contrast, the energy landscapes of the LD-series are characterized by well-defined minima corresponding to specific conformational structures. A single well-defined minimum exists in the energy landscape of the largest oligomer LD-8, corresponding to a precise conformation, characterized by i + 5 →i N-HO[double bond, length as m-dash]C hydrogen bonds, typical of a π-helix. ECD and VCD spectra were measured to identify the chiroptical profiles of the oligomers. The most striking element in the ECD spectra of the LD-series is their exceptionally strong intensity, which confirms that these polypeptides attain a high degree of helical order. VCD spectra for the LD-series are well reproduced by frequency calculations when π-helix folds are employed as input structures, suggesting that a symmetrical VCD couplet around 1720 cm-1 can be taken as the VCD signature of π-helices.
Collapse
Affiliation(s)
- Sergio Di Silvio
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Fabio Bologna
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Lorenzo Milli
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Demetra Giuri
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Nicola Zanna
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Nicola Castellucci
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Magda Monari
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Matteo Calvaresi
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Marcin Górecki
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy. and Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy.
| | - Claudia Tomasini
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy.
| |
Collapse
|
7
|
Rossi R, Angelici G, Casotti G, Manzini C, Lessi M. Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1
H
‐Imidazole Derivatives: State of the Art. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801381] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gianluca Casotti
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Chiara Manzini
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| |
Collapse
|
8
|
Shyam R, Nauton L, Angelici G, Roy O, Taillefumier C, Faure S. NCα-gem-dimethylated peptoid side chains: A novel approach for structural control and peptide sequence mimetics. Biopolymers 2019; 110:e23273. [PMID: 30897209 DOI: 10.1002/bip.23273] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 01/05/2023]
Abstract
The design of linear peptoid oligomers adopting well-defined secondary structures while mimicking defined peptide primary sequences is a major challenge in the context of drug discovery. To this end, chemists have developed cis-inducing peptoid side chains to build robust polyproline type I helices. However, the number of efficient examples remains scarce and chemical diversity accessible through the use of these side chains is limited. Herein, we introduce an array of NCα-gem-dimethylated peptoid residues mimicking proteinogenic amino acids. Submonomer synthesis and block-coupling approaches were explored to access heterooligomers incorporating these novel types of side chains. NMR studies of monomer and trimer models showed that the NCα-gem-dimethylated groups exert complete cis control on the backbone amide conformation. Lastly, a preliminary molecular modeling study gave an insight into the preferred orientation of the substituents of the NCα-gem-dimethyl side chains relative to the peptoid backbone.
Collapse
Affiliation(s)
- Radhe Shyam
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Lionel Nauton
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Gaetano Angelici
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Olivier Roy
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Claude Taillefumier
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Sophie Faure
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| |
Collapse
|
9
|
Laudadio G, Fusini G, Casotti G, Evangelisti C, Angelici G, Carpita A. Synthesis of Pterostilbene through supported-catalyst promoted Mizoroki-Heck reaction, and its transposition in continuous flow reactor. J Flow Chem 2019. [DOI: 10.1007/s41981-019-00033-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
10
|
Fusini G, Barsanti D, Angelici G, Casotti G, Canale A, Benelli G, Lucchi A, Carpita A. Identification and synthesis of new sex-specific components of olive fruit fly (Bactrocera oleae) female rectal gland, through original Negishi reactions on supported catalysts. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
11
|
Dumonteil G, Bhattacharjee N, Angelici G, Roy O, Faure S, Jouffret L, Jolibois F, Perrin L, Taillefumier C. Exploring the Conformation of Mixed Cis–Trans α,β-Oligopeptoids: A Joint Experimental and Computational Study. J Org Chem 2018; 83:6382-6396. [DOI: 10.1021/acs.joc.8b00606] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Geoffrey Dumonteil
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Nicholus Bhattacharjee
- Université de Toulouse-INSA-UPS, LPCNO, CNRS UMR 5215, 135 av Rangueil, F-31077, Toulouse, France
- Université de Lyon, Université Claude Bernard Lyon 1, CPE Lyon, INSA Lyon, ICBMS, CNRS UMR 5246, Equipe ITEMM, Bât Curien, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Gaetano Angelici
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Olivier Roy
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Sophie Faure
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Laurent Jouffret
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| | - Franck Jolibois
- Université de Toulouse-INSA-UPS, LPCNO, CNRS UMR 5215, 135 av Rangueil, F-31077, Toulouse, France
| | - Lionel Perrin
- Université de Lyon, Université Claude Bernard Lyon 1, CPE Lyon, INSA Lyon, ICBMS, CNRS UMR 5246, Equipe ITEMM, Bât Curien, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Claude Taillefumier
- Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France
| |
Collapse
|
12
|
Angelici G, Górecki M, Pescitelli G, Zanna N, Monari M, Tomasini C. Synthesis and structure analysis of ferrocene-containing pseudopeptides. Biopolymers 2017; 110. [PMID: 29058321 DOI: 10.1002/bip.23072] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/11/2017] [Accepted: 09/20/2017] [Indexed: 11/06/2022]
Abstract
Ferrocene with its aromaticity and facile redox properties is an attractive moiety to be incorporated into functional moieties. Medicinal applications of ferrocene are well known and ferrocene itself shows cytotoxic and antianemic properties. In this article, we will describe the synthesis and the structure analysis of two pseudopeptides containing a ferrocene moiety as N-terminal group. After purification, Fc-l-Phe-d-Oxd-OBn [l-Phel-phenylalanine; d-Oxd(4R,5S)-4-Methyl-5-carboxy-oxazolidin-2-one] appears as bright brown solid that spontaneously forms brown needles. The X-ray diffraction of the crystals shows the presence of strong π interactions between the ferrocenyl moiety and the phenyl rings, while no NH•••OC hydrogen bonds are formed. This result is confirmed by FT-IR and 1 H NMR analysis. In contrast, both FT-IR and 1 H NMR analysis suggest that Fc-(l-Phe-d-Oxd)2 -OBn forms a turn conformation stabilized by intramolecular NH•••OC hydrogen bonds in solution. Chiroptical spectroscopies (ECD and VCD) substantially confirmed the absence of a well-defined folded structure. The presence of the Fc moiety is responsible for specific ECD signals, one of which displayed pronounced temperature dependence and is directly related with the helicity assumed by the Fc core. Solid-state ECD spectra were recorded and rationalized on the basis of the X-ray geometry and quantum-mechanical calculations.
Collapse
Affiliation(s)
- Gaetano Angelici
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa - Via Moruzzi 13, Pisa, 56124, Italy
| | - Marcin Górecki
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa - Via Moruzzi 13, Pisa, 56124, Italy
- Institute of Organic Chemistry - Polish Academy of Sciences - ul. Kasprzaka 44/52, Warsaw, 01-224, Poland
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa - Via Moruzzi 13, Pisa, 56124, Italy
| | - Nicola Zanna
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna - Via Selmi, 2, Bologna, 40126, Italy
| | - Magda Monari
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna - Via Selmi, 2, Bologna, 40126, Italy
| | - Claudia Tomasini
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna - Via Selmi, 2, Bologna, 40126, Italy
| |
Collapse
|
13
|
Arrico L, Angelici G, Di Bari L. Taking advantage of Co(ii) induced enhanced VCD for the fast and sensitive determination of enantiomeric excess. Org Biomol Chem 2017; 15:9800-9803. [DOI: 10.1039/c7ob02380d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Large Co(ii)-induced VCD signals provide a method for determining the enantiomeric excess of α-amino acids. This strategy can be followed for building new VCD protocols.
Collapse
Affiliation(s)
- Lorenzo Arrico
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale
- Università di Pisa
- I-56124 Pisa
- Italy
| |
Collapse
|
14
|
Angelici G, Bhattacharjee N, Roy O, Faure S, Didierjean C, Jouffret L, Jolibois F, Perrin L, Taillefumier C. Correction: Weak backbone CH⋯OC and side chain tBu⋯tBu London interactions help promote helix folding of achiral NtBu peptoids. Chem Commun (Camb) 2016; 52:6625. [DOI: 10.1039/c6cc90163h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Weak backbone CH⋯OC and side chain tBu⋯tBu London interactions help promote helix folding of achiral NtBu peptoids’ by G. Angelici et al., Chem. Commun., 2016, 52, 4573–4576.
Collapse
Affiliation(s)
- G. Angelici
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | | | - O. Roy
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - S. Faure
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - C. Didierjean
- LCM3B
- Université de Lorraine
- UMR CNRS 7036 CRM2
- F-54506 Vandoeuvre-lès-Nancy
- France
| | - L. Jouffret
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - F. Jolibois
- Université de Toulouse-INSA-UPS
- LPCNO
- CNRS UMR 5215
- Toulouse
- France
| | - L. Perrin
- ICBMS UMR 5246
- Université de Lyon
- 69622 Villeurbanne cedex
- France
| | - C. Taillefumier
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| |
Collapse
|
15
|
Angelici G, Bhattacharjee N, Roy O, Faure S, Didierjean C, Jouffret L, Jolibois F, Perrin L, Taillefumier C. Weak backbone CH⋯OC and side chain tBu⋯tBu London interactions help promote helix folding of achiral NtBu peptoids. Chem Commun (Camb) 2016; 52:4573-6. [DOI: 10.1039/c6cc00375c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The synthesis and helix folding propensity of achiral all-cis amide (NtBu)-glycine oligomers is reported.
Collapse
Affiliation(s)
- G. Angelici
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | | | - O. Roy
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - S. Faure
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - C. Didierjean
- LCM3B
- Université de Lorraine
- UMR CNRS 7036 CRM2
- F-54506 Vandoeuvre-lès-Nancy
- France
| | - L. Jouffret
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| | - F. Jolibois
- Université de Toulouse-INSA-UPS
- LPCNO
- CNRS UMR 5215
- Toulouse
- France
| | - L. Perrin
- ICBMS UMR 5246
- Université de Lyon
- Bât. Curien
- 69622 Villeurbanne cedex
- France
| | - C. Taillefumier
- Université Clermont Auvergne
- Université Blaise Pascal
- Institut de Chimie de Clermont-Ferrand
- F-63000 Clermont-Ferrand
- France
| |
Collapse
|
16
|
Uda NR, Upert G, Angelici G, Nicolet S, Schmidt T, Schwede T, Creus M. Zinc-selective inhibition of the promiscuous bacterial amide-hydrolase DapE: implications of metal heterogeneity for evolution and antibioticdrug design. Metallomics 2014; 6:88-95. [DOI: 10.1039/c3mt00125c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Angelici G, Castellucci N, Tomasini C. Conformational studies on a medium size cyclopseudopeptide containing the oxazolidin-2-one moiety. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Gaetano Angelici
- Department of Chemistry; University of Basel; St. Johanns-Ring 19; CH-4056; Basel; Switzerland
| | - Nicola Castellucci
- Dipartimento di Chimica ‘G. Ciamician’; Università di Bologna; Via Selmi 2; I-40126; Bologna; Italy
| | - Claudia Tomasini
- Dipartimento di Chimica ‘G. Ciamician’; Università di Bologna; Via Selmi 2; I-40126; Bologna; Italy
| |
Collapse
|
18
|
Affiliation(s)
- Claudia Tomasini
- Dipartimento di Chimica “G. Ciamician” Alma Mater Studiorum Università di Bologna via Selmi 2, 40126 Bologna, Italy, Fax: +39‐051‐2099456
| | - Gaetano Angelici
- Department of Chemistry, University of Basel, St. Johanns‐Ring 19, 4056 Basel, Switzerland
| | - Nicola Castellucci
- Dipartimento di Chimica “G. Ciamician” Alma Mater Studiorum Università di Bologna via Selmi 2, 40126 Bologna, Italy, Fax: +39‐051‐2099456
| |
Collapse
|
19
|
Castellucci N, Angelici G, Falini G, Monari M, Tomasini C. L-Phe-D-Oxd: A Privileged Scaffold for the Formation of Supramolecular Materials. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001643] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
20
|
Castellucci N, Falini G, Angelici G, Tomasini C. Formation of gels in the presence of metal ions. Amino Acids 2011; 41:609-20. [DOI: 10.1007/s00726-011-0908-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Accepted: 03/30/2011] [Indexed: 11/24/2022]
|
21
|
Wiesner M, Upert G, Angelici G, Wennemers H. Enamine Catalysis with Low Catalyst Loadings - High Efficiency via Kinetic Studies. J Am Chem Soc 2009; 132:6-7. [DOI: 10.1021/ja9068112] [Citation(s) in RCA: 157] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Markus Wiesner
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Grégory Upert
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Gaetano Angelici
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Helma Wennemers
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| |
Collapse
|
22
|
Angelici G, Falini G, Hofmann HJ, Huster D, Monari M, Tomasini C. Nanofibers from oxazolidi-2-one containing hybrid foldamers: what is the right molecular size? Chemistry 2009; 15:8037-8048. [PMID: 19360839 DOI: 10.1002/chem.200900185] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A series of oligomers of the type Boc-(L-Phe-D-Oxd)(n)-OBn (Boc = tert-butoxycarbonyl; Oxd = 4-methyl-5-carboxy oxazolidin-2-one; Bn = benzyl) were prepared for n = 2-5. The shortest oligomer, Boc-(L-Phe-D-Oxd)(2)-OBn, aggregates and forms a fiber-like material with an anti-parallel beta-sheet structure in which the oligopeptide units are connected to each other by only one intermolecular hydrogen bond. The longer oligomers exhibit structural heterogeneity. They start to organize into secondary structures by the formation of intramolecular hydrogen bonds at the pentamer level. Microscopy and diffraction of the oligomers indicated a crystalline character for only the shorter ones.
Collapse
Affiliation(s)
- Gaetano Angelici
- Dipartimento di Chimica G. Ciamician, Alma Mater Studiorum Università di Bologna, Via Selmi 21, 40126 Bologna, Italy
| | | | | | | | | | | |
Collapse
|
23
|
Angelici G, Corrêa RJ, Garden SJ, Tomasini C. Water influences the enantioselectivity in the proline or prolinamide-catalyzed aldol addition of acetone to isatins. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.12.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
24
|
Angelici G, Falini G, Hofmann HJ, Huster D, Monari M, Tomasini C. A Fiberlike Peptide Material Stabilized by Single Intermolecular Hydrogen Bonds. Angew Chem Int Ed Engl 2008; 47:8075-8. [DOI: 10.1002/anie.200802587] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
25
|
Angelici G, Falini G, Hofmann HJ, Huster D, Monari M, Tomasini C. A Fiberlike Peptide Material Stabilized by Single Intermolecular Hydrogen Bonds. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802587] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
26
|
Angelici G, Tresanchez Carrera R, Luppi G, Tomasini C. The Design and Synthesis of Dansyl-Containing Cyclic Pseudopeptides. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800248] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
27
|
Angelici G, Falgiani A, Luppi G, Kaptein B, Broxterman QB, Tomasini C. Atom Economic and Highly Syn‐selective Prolinamide‐Catalyzed Cross‐aldol Addition of Hydroxyacetone to Aromatic Aldehydes. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910701863715] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Gaetano Angelici
- a Chemistry Department “G. Ciamician,” , Alma Mater Studiorum University of Bologna , Bologna, Italy
| | - Annamaria Falgiani
- a Chemistry Department “G. Ciamician,” , Alma Mater Studiorum University of Bologna , Bologna, Italy
| | - Gianluigi Luppi
- a Chemistry Department “G. Ciamician,” , Alma Mater Studiorum University of Bologna , Bologna, Italy
| | - Bernard Kaptein
- b DSM Research, Pharmaceutical Products , Advanced Synthesis and Catalysis , Geleen, The Netherlands
| | - Quirinus B. Broxterman
- b DSM Research, Pharmaceutical Products , Advanced Synthesis and Catalysis , Geleen, The Netherlands
| | - Claudia Tomasini
- a Chemistry Department “G. Ciamician,” , Alma Mater Studiorum University of Bologna , Bologna, Italy
| |
Collapse
|
28
|
Corrêa RJ, Garden SJ, Angelici G, Tomasini C. A DFT and AIM Study of the Proline-Catalyzed Asymmetric Cross-Aldol Addition of Acetone to Isatins: A Rationalization for the Reversal of Chirality. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700944] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
29
|
Angelici G, Contaldi S, Lynn Green S, Tomasini C. Synthesis of imidazolidin-2-one-4-carboxylate and of (tetrahydro)pyrimidin-2-one-5-carboxylate via an efficient modification of the Hofmann rearrangement. Org Biomol Chem 2008; 6:1849-52. [DOI: 10.1039/b801909f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Angelici G, Luppi G, Kaptein B, Broxterman QB, Hofmann HJ, Tomasini C. Synthesis and Secondary Structure of Alternate α,β-Hybrid Peptides Containing Oxazolidin-2-one Moieties. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700134] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
31
|
Lombardo M, Licciulli S, Pasi F, Angelici G, Trombini C. Cobalt-Catalysed Addition of Allylidene Dipivalate to Aldehydes. A Formal Homoaldol Condensation. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200505212] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|