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Castoldi L, Di Tommaso EM, Reitti M, Gräfen B, Olofsson B. Electrophilic Vinylation of Thiols under Mild and Transition Metal-Free Conditions. Angew Chem Int Ed Engl 2020; 59:15512-15516. [PMID: 32395880 PMCID: PMC7497129 DOI: 10.1002/anie.202002936] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/17/2020] [Indexed: 01/28/2023]
Abstract
The iodine(III) reagents vinylbenziodoxolones (VBX) were employed to vinylate a series of aliphatic and aromatic thiols, providing E-alkenyl sulfides with complete chemo- and regioselectivity, as well as excellent stereoselectivity. The methodology displays high functional group tolerance and proceeds under mild and transition metal-free conditions without the need for excess substrate or reagents. Mercaptothiazoles could be vinylated under modified conditions, resulting in opposite stereoselectivity compared to previous reactions with vinyliodonium salts. Novel VBX reagents with substituted benziodoxolone cores were prepared, and improved reactivity was discovered with a dimethyl-substituted core.
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Affiliation(s)
- Laura Castoldi
- Department of Organic ChemistryArrhenius LaboratoryStockholm University10691StockholmSweden
| | - Ester Maria Di Tommaso
- Department of Organic ChemistryArrhenius LaboratoryStockholm University10691StockholmSweden
| | - Marcus Reitti
- Department of Organic ChemistryArrhenius LaboratoryStockholm University10691StockholmSweden
| | - Barbara Gräfen
- Department of Organic ChemistryArrhenius LaboratoryStockholm University10691StockholmSweden
| | - Berit Olofsson
- Department of Organic ChemistryArrhenius LaboratoryStockholm University10691StockholmSweden
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Castoldi L, Di Tommaso EM, Reitti M, Gräfen B, Olofsson B. Electrophilic Vinylation of Thiols under Mild and Transition Metal‐Free Conditions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002936] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Laura Castoldi
- Department of Organic Chemistry Arrhenius Laboratory Stockholm University 10691 Stockholm Sweden
| | - Ester Maria Di Tommaso
- Department of Organic Chemistry Arrhenius Laboratory Stockholm University 10691 Stockholm Sweden
| | - Marcus Reitti
- Department of Organic Chemistry Arrhenius Laboratory Stockholm University 10691 Stockholm Sweden
| | - Barbara Gräfen
- Department of Organic Chemistry Arrhenius Laboratory Stockholm University 10691 Stockholm Sweden
| | - Berit Olofsson
- Department of Organic Chemistry Arrhenius Laboratory Stockholm University 10691 Stockholm Sweden
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Kramer S, Svatunek D, Alberg I, Gräfen B, Schmitt S, Braun L, van Onzen AHAM, Rossin R, Koynov K, Mikula H, Zentel R. HPMA-Based Nanoparticles for Fast, Bioorthogonal iEDDA Ligation. Biomacromolecules 2019; 20:3786-3797. [PMID: 31535846 PMCID: PMC6794642 DOI: 10.1021/acs.biomac.9b00868] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 11/30/2022]
Abstract
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Fast
and bioorthogonally reacting nanoparticles are attractive
tools for biomedical applications such as tumor pretargeting. In this
study, we designed an amphiphilic block copolymer system based on
HPMA using different strategies to introduce the highly reactive click
units 1,2,4,5-tetrazines (Tz) either at the chain end (Tz-CTA) or
statistical into the hydrophobic block. This reactive group undergoes
a rapid, bioorthogonal inverse electron-demand Diels–Alder
reaction (iEDDA) with trans-cyclooctenes (TCO). Subsequently,
this polymer platform was used for the preparation of different Tz-covered
nanoparticles, such as micelles and colloids. Thereby it was found
that the reactivity of the polymeric micelles is comparable to that
of the low molar mass tetrazines. The core-cross-linked micelles can
be successfully conjugated at rather low concentrations to large biomacromolecules
like antibodies, not only in physiological buffer, but also in human
blood plasma, which was confirmed by fluorescence correlation spectroscopy
(FCS).
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Affiliation(s)
- Stefan Kramer
- Johannes Gutenberg University Mainz , Institute of Organic Chemistry , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Dennis Svatunek
- TU Wien , Institute of Applied Synthetic Chemistry , Getreidemarkt 9 , 1060 Vienna , Austria
| | - Irina Alberg
- Johannes Gutenberg University Mainz , Institute of Organic Chemistry , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Barbara Gräfen
- Johannes Gutenberg University Mainz , Institute of Organic Chemistry , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Sascha Schmitt
- Max Planck Institute for Polymer Research , Physics of Interfaces , Ackermannweg 10 , 55128 Mainz , Germany
| | - Lydia Braun
- Johannes Gutenberg University Mainz , Institute of Organic Chemistry , Duesbergweg 10-14 , 55128 Mainz , Germany
| | - Arthur H A M van Onzen
- Tagworks Pharmaceuticals BV, Radboud University Medical Center , Department of Nuclear Medicine and Radiology , 6500 HB Nijmegen , The Netherlands
| | - Raffaella Rossin
- Tagworks Pharmaceuticals BV, Radboud University Medical Center , Department of Nuclear Medicine and Radiology , 6500 HB Nijmegen , The Netherlands
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research , Physics of Interfaces , Ackermannweg 10 , 55128 Mainz , Germany
| | - Hannes Mikula
- TU Wien , Institute of Applied Synthetic Chemistry , Getreidemarkt 9 , 1060 Vienna , Austria
| | - Rudolf Zentel
- Johannes Gutenberg University Mainz , Institute of Organic Chemistry , Duesbergweg 10-14 , 55128 Mainz , Germany
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