1950-85-2Relevant academic research and scientific papers
A trisulfide-linked glycoprotein
Bernardes, Goncalo J. L.,Marston, Justin P.,Batsanov, Andrei S.,Howard, Judith A. K.,Davis, Benjamin G.
, p. 3145 - 3147 (2007)
The first member of a novel class of chemoselective reagents, glycosyl methanedithiosulfonates, has been synthesized, identified and employed in the first examples of chemical, site-selective construction of a trisulfide-modified protein with complete conversion. The Royal Society of Chemistry.
Sodium thiosulfonate salts: Molecular and supramolecular structural features and solution radiolytic properties
Fischmann, Adam J.,Spiccia, Leone
experimental part, p. 12310 - 12319 (2012/01/31)
Three sodium thiosulfonate salts, NaMeS2O2· H2O, NaPhS2O2 and NaMeC6H 4S2O2 have been prepared by the direct reaction of the sodium sulfinate salts with elemental sulfur, a clean, benign route that produces no by-products. The structures of the phenyl (which crystallised as a hydrate, NaPhS2O2·1.5H2O) and p-tolyl compounds were determined by X-ray crystallography. For the p-tolyl derivative, NaMeC6H4S2O2, the unexpected coordination of the pendant sulfur atom was found, a feature not reported previously for thiosulfonate salts, and observed only in two of the more common thiosulfate salts. Intermolecular CH/π interactions are postulated to contribute to the driving force of sulfur coordination, otherwise a different orientation of the aromatic rings would be expected. For NaPhS2O 2·1.5H2O, the water ligands and thiosulfonate anions each contribute three oxygen atoms to form a NaO6 coordination sphere. The thiosulfonate and water oxygens bridge to other sodium atoms forming a three-dimensional layer structure consisting of sheets of NaPhS 2O2·1.5H2O with a hydrophilic interior layer, comprising the sodium ions, water ligands and -S2O 2- groups, and a hydrophobic exterior formed by the phenyl substituent. The structure is further stabilised by an extensive H-bonding network between the ligated water and the non-coordinating thiosulfonate sulfur atom forming part of the hydrophilic layer and by weak intermolecular edge-to-face CH/π interactions between the sheets. Investigation of the radical chemistry of the three salts using pulse radiolysis indicated that oxidation of NaMeS2O2·H2O involves formation of a sulfur-centred radical rather than hydrogen abstraction from the methyl substituent, whereas oxidation of the aromatic ring is the preferred pathway for the phenyl and p-tolyl derivatives.
PROSTAGLANDIN PHARMACEUTICAL COMPOSITIONS
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Page/Page column 4, (2010/07/08)
The present invention relates to new prostaglandin derivatives having improved pharmacological activity and enhanced tolerability. They can be employed for the treatment of glaucoma and ocular hypertension.
Coating Surfaces
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, (2009/12/02)
Disclosed is a method of attaching, indirectly, a member of a specific binding pair (or sbp) to a surface, the method comprising the steps of: (a) contacting the surface with a solution, preferably an aqueous solution, of a polymer, having side chains according to the formula X-Y-Z-R, wherein X is a spacer group; Y is a sulphur, selenium or tellurium atom; Z is a sulphur, selenium or tellurium atom, any of which may be bonded to one or two oxygen atoms; and wherein R is any suitable moiety such that -Z-R constitutes a leaving group; such that at least some of the -Z-R groups are displaced and the polymer becomes bound to the surface by X-Y groups; and (b) contacting a polymer-coated surface resulting from step (a) with a solution, preferably an aqueous solution, comprising an sbp member, so as to cause the polymer to react with the sbp member, so as to attach the sbp member, indirectly, to the surface.
Interactions of aromatic mannosyl disulfide derivatives with Concanavalin A: synthesis, thermodynamic and NMR spectroscopy studies
Murthy, Bandaru Narasimha,Sinha, Sharmistha,Surolia, Avadhesha,Jayaraman, Narayanaswamy,Szilagyi, Laszlo,Szabo, Ildiko,Koever, Katalin E.
experimental part, p. 1758 - 1763 (2009/12/24)
α-d-Mannopyranosyl units were attached to an aromatic scaffold through disulfide linkages to obtain mono- to trivalent glycosylated ligands for lectin binding studies. Isothermal titration calorimetric (ITC) measurements indicated that binding affinities of these derivatives to Concanavalin A (Con A) were comparable to or slightly higher than that of methyl α-d-mannopyranoside (Ka values in the range of 104 M-1). The stoichiometries of the lectin-ligand complexes were in agreement with the formal valencies (1-3) of the respective ligands indicating cross-linking in interactions with the di- and trivalent derivatives. Multivalency effects could not, however, be observed with the latter. These ligands were shown to bind to the carbohydrate binding site of Con A using saturation transfer difference (STD) NMR competition experiments.
Efficient synthesis of methanesulphonate-derived lipid chains for attachment of proteins to lipid membranes
Hicks, Matthew R.,Rullay, Atvinder K.,Pedrido, Rosa,Crout, David H.,Pinheiro, Teresa J. T.
, p. 3726 - 3750 (2008/12/23)
We have developed an easy and flexible synthetic methodology to obtain lipid chains containing methanothiosulfonate terminal groups with the aim to attach them to natural proteins as functional groups. There are many proteins found in nature that are modified by lipids, and this is a key part of their function. For example, the prion protein is attached to the plasma membrane via a glycosylphosphatidylinositol (GPI) anchor, and this protein is thought to be the causative agent in diseases such as bovine spongiform encephalopathy (BSE; "mad cow disease") and the human equivalent Creutzfeldt-Jakob disease. However, production of large amounts of protein in bacteria results in proteins that lack these lipid modifications. The lipid chains containing methanothiosulfonate terminal groups that we have synthesized here can be attached to these proteins through the thiol contained in the side chain of the cysteine residue, which can be incorporated into the protein sequence at the desired position. Copyright Taylor & Francis Group, LLC.
Cardiovascular agents
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Page/Page column 9-10, (2008/12/04)
The present invention relates to novel compounds that are derivatives of angiotensin receptor blocker (ARB) that comprise in their formula a polysulfurated group and that are useful for treating cardio-vascular diseases, such as hypertension, ischemic heart disease, atherosclerosis, metabolic syndrome, etc. also in combination with other cardiovascular agents.
5-Fluorouracil derivatives and their use for the treatment of cancer
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Page/Page column 6, (2008/12/06)
The present invention relates to 5-fluoropyrimidine compounds of formula I that are useful for preventing, treating or reducing tumoral diseases and pathological conditions involving various cancer forms.
PROSTAGLANDIN PHARMACEUTICAL COMPOSITIONS
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Page/Page column 20-23, (2009/01/20)
The present invention relates to new prostaglandin derivatives having improved pharmacological activity and enhanced tolerability. They can be employed for the treatment of glaucoma and ocular hypertension.
Anti-inflammatory agents
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Page/Page column 3-4, (2008/06/13)
The present invention relates to novel thiosulfonates derivatives. The present invention also provides methods for preventing, treating and/or reducing inflammation-associated diseases in the cardiovascular, connective tissue, pulmonary, gastrointestinal, respiratory, urogenital, nervous or cutaneous systems as well as infective and tumoral diseases employing said compounds.
