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  • 1.
    Adolfsson, Hans
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Transition metal-catalyzed epoxidation of alkenes2010In: Modern Oxidation Methods / [ed] Jan-Erling Bäckvall, Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA , 2010, 2, p. 37-84Chapter in book (Other academic)
  • 2. Arukuusk, Piret
    et al.
    Pärnaste, Ly
    Hällbrink, Mattias
    Stockholm University, Faculty of Science, Department of Neurochemistry.
    Langel, Ülo
    Stockholm University, Faculty of Science, Department of Neurochemistry. Tartu University, Estonia.
    PepFects and NickFects for the Intracellular Delivery of Nucleic Acids2015In: Cell-Penetrating Peptides: Methods and Protocols / [ed] Ülo Langel, New York: Springer, 2015, Vol. 1324, p. 303-315Chapter in book (Refereed)
    Abstract [en]

    Nucleic acids can be utilized in gene therapy to restore, alter, or silence gene functions. In order to reveal the biological activity nucleic acids have to reach their intracellular targets by passing through the plasma membrane, which is impermeable for these large and negatively charged molecules. Cell-penetrating peptides (CPPs) condense nucleic acids into nanoparticles using non-covalent complexation strategy and mediate their delivery into the cell, whereas the physicochemical parameters of the nanoparticles determine the interactions with the membranes, uptake mechanism, and subsequent intracellular fate. The nanoparticles are mostly internalized by endocytosis that leads to the entrapment of them in endosomal vesicles. Therefore design of new CPPs that are applicable for non-covalent complex formation strategy and harness endosomolytic properties is highly vital. Here we demonstrate that PepFects and NickFects are efficient vectors for the intracellular delivery of various nucleic acids.This chapter describes how to form CPP/pDNA nanoparticles, evaluate stable nanoparticles formation, and assess gene delivery efficacy.

  • 3.
    Bouma, M. J.
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Olofsson, Berit
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    7.07 α-Oxygenation of Carbonyl Compounds2014In: Comprehensive Organic Synthesis II (Second Edition) / [ed] Paul Knochel and Gary A. Molander, Amsterdam: Oxford: Elsevier , 2014, 2nd, p. 213-241Chapter in book (Refereed)
    Abstract [en]

    Abstract The chapter describes synthetically useful strategies for α-oxygenation of carbonyl compounds, with special emphasis on recent methods for catalytic and asymmetric reactions. The oxidation of enolates, enols, enol ethers, and α,β-unsaturated compounds is discussed in detail. Classical oxidation reagents like metal oxides, molecular oxygen, peroxides, and peracids are covered, with asymmetric dihydroxylation of enol ethers giving the highest enantioselectivities together with organocatalytic methods using peroxides. Oxaziridines, nitrosoarenes, and hypervalent iodine compounds are more recently developed α-oxygenation alternatives that allow metal-free oxidations under mild conditions. The combination of nitrosoarenes with organocatalysis is currently the best method for enantioselective α-oxygenations. The area of asymmetric α-oxygenations with hypervalent iodine compounds is currently under development, and high enantioselectivities have only been achieved in intramolecular reactions and epoxidations.

  • 4.
    Bäckvall, Jan-Erling
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Selective oxidation of amines and sulfides2010In: Modern Oxidation Methods / [ed] Jan-Erling Bäckvall, Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA , 2010, 2, p. 277-313Chapter in book (Other academic)
  • 5.
    Córdova, Armando
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Asymmetric bifunctional catalysis using heterobimetallic and multimetallic systems in enantioselective conjugate additions2010In: Catalytic Asymmetric Conjugate Reactions / [ed] Armando Córdova, Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA , 2010, 1, p. 169-190Chapter in book (Other academic)
  • 6.
    Johnston, Eric V.
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Bäckvall, Jan-Erling
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Oxidation of carbonyl compounds2010In: Modern Oxidation Methods / [ed] Jan-Erling Bäckvall, Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA , 2010, 2, p. 353-369Chapter in book (Other academic)
  • 7.
    Olofsson, Berit
    Stockholm University, Faculty of Science, Department of Organic Chemistry. Stellenbosch University, South Africa.
    Arylation with Diaryliodonium Salts2016In: Hypervalent Iodine Chemistry / [ed] Thomas Wirth, Springer, 2016, p. 135-166Chapter in book (Refereed)
    Abstract [en]

    This chapter focuses on recent developments in metal-free and metal-catalyzed arylations with diaryliodonium salts (diaryl-λ3-iodanes). Synthetic routes to diaryliodonium salts are briefly described, and chemoselectivity trends with unsymmetric iodonium salts are discussed.

  • 8.
    Olofsson, Berit
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Somfai, Peter
    Organisk kemi, KTH.
    Vinylepoxides in Organic Synthesis2006In: Aziridines and Epoxides in Organic Synthesis, Wiley-VCH: Weinheim , 2006, p. 315-347Chapter in book (Refereed)
    Abstract [en]

    Vinylepoxides have become important intermediates in organic synthesis. The main reason for this is the development of selective methods for their subsequent transformations. As vinylepoxides are a special type of allylic electrophiles, it is necessary to control both the regioselectivity and the diastereoselectivity in their reactions with nucleophiles. The practical usefulness of vinylepoxides in synthesis will, however, always be dictated by their availability. Several methods for the asymmetric preparation of vinyloxiranes have been developed and it can be expected that the use of these compounds in organic synthesis will increase. This chapter starts with a discussion of the available techniques for preparing vinylepoxides, with emphasis on asymmetric methods. In the second part various transformations of vinylepoxides are summarized.

  • 9.
    Pilarski, Lukasz T.
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Szabó, Kálmán J.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Diphenyliodonium hexafluorophosphate2011In: Encyclopedia of Reagents for Organic Synthesis, John Wiley & Sons, 2011Chapter in book (Refereed)
  • 10. Samec, Joseph S. M.
    et al.
    Bäckvall, Jan-Erling
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    1-Hydroxytetraphenylcyclopentadienyl-(tetraphenyl-2,4-cyclopentadien-1-one)-μ-hydrotetracarbonyldiruthenium(II)2009In: Encyclopedia of Reagents for Organic Synthesis, John Wiley & Sons, Ltd. , 2009, 2, p. 5557-5564Chapter in book (Other academic)
  • 11.
    Selander, Nicklas
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Szabó, Kálmán
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    [2,6-Bis[(phenylseleno-κSe)methyl]phenyl-κC]chloropalladium2009In: Encyclopedia of Reagents for Organic Synthesis, John Wiley & Sons, Ltd. , 2009Chapter in book (Other academic)
  • 12.
    Selander, Nicklas
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Szabó, Kálmán J.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Efficient synthesis of α-amino acids via organoboronate reagents2009In: Asymmetric Synthesis and Application of α-Amino Acids / [ed] Vadim A. Soloshonok and Kunisuke Izawa, Washington, DC, USA: American Chemical Society , 2009, p. 190-202Chapter in book (Other academic)
  • 13.
    Ståhle, Jonas
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Widmalm, Göran
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    NMR Chemical Shift Predictions and Structural Elucidation of Oligo- and Polysaccharides by the Computer Program CASPER2017In: NMR in Glycoscience and Glycotechnology / [ed] Koichi Kato, Thomas Peters, Royal Society of Chemistry, 2017, p. 335-352Chapter in book (Refereed)
    Abstract [en]

    Glycans are often linked to proteins or lipids in the form of glycoconjugates but these highly complex molecules also have biological functions as oligosaccharides per se. The limited dispersion in NMR spectra of carbohydrates makes their analysis and interpretation very cumbersome. The computer program CASPER, which is a web-based tool, facilitates prediction 1H and 13C NMR chemical shifts of oligo- or polysaccharide structures defined by the user, makes it possible to carry out an NMR-based sugar analysis including determination of absolute configuration and to perform structure elucidation of unknown glycans using unassigned NMR spectra as input to the program. The output from the program contains, inter alia, tentatively assigned NMR resonances, proposed sugar components, structural suggestions ranked according to the similarity between their predicted chemical shifts and the experimental data as well as 3D structures in pdb-format generated seamlessly by the CarbBuilder program as a part of the CASPER-GUI.

  • 14.
    Zhao, Gui-Ling
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Catalytic asymmetric Baylis–Hillman reactions and surroundings2010In: Catalytic Asymmetric Conjugate Reactions / [ed] Armando Córdova, Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA , 2010, 1, p. 393-438Chapter in book (Other academic)
  • 15.
    Zhao, Gui-Ling
    et al.
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    Córdova, Armando
    Stockholm University, Faculty of Science, Department of Organic Chemistry.
    ECAs of organolithium reagents, Grignard reagents, and examples of Cu-catalyzed ECAs2010In: Catalytic Asymmetric Conjugate Reactions / [ed] Armando Córdova, Weinheim: Wiley-VCH Verlag GmbH & Co. KGaA , 2010, 1, p. 145-167Chapter in book (Other academic)
1 - 15 of 15
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