Mono- and di-halogenated histamines, l-histidine methyl ester derivatives and carnosine derivatives incorporating chlorine, bromine and iodine were prepared and investigated as activators of five carbonic anhydrase (CA, EC 4.2.1.
View Article and Find Full Text PDFMultivalent glycovesicle recognition over lectin layers emphasizes effects on the dynamic lateral fluidity of glycoside clusters upon multivalent binding at the bilayer surface and vice versa.
View Article and Find Full Text PDFThiol-ene click chemistry has been applied for obtaining sulfonamide carbonic anhydrase (CA, EC 4.2.1.
View Article and Find Full Text PDFA series of fluorescent sulfonamide carbonic anhydrase (CA, EC 4.2.1.
View Article and Find Full Text PDFMono- and dihalogenated histamine derivatives incorporating fluorine, chlorine and bromine have been prepared together with the corresponding boc-protected compounds at the aminoethyl group. They have been investigated as activators of the zinc enzyme carbonic anhydrase (CA, EC 4.2.
View Article and Find Full Text PDFJ Am Chem Soc
July 2011
Synthesis of functionalized magnetic nanoparticles (NPs) for biomedical applications represents a current challenge. In this paper we present the synthesis and characterization of water-dispersible sugar-coated iron oxide NPs specifically designed as magnetic fluid hyperthermia heat mediators and negative contrast agents for magnetic resonance imaging. In particular, the influence of the inorganic core size was investigated.
View Article and Find Full Text PDFA new series of sulfonamides was synthesized by the reaction of the boroxazolidone complex of l-lysine with isothiocyanates incorporating sulfamoyl moieties and diverse organic scaffolds. The obtained thioureas have been investigated as inhibitors of four physiologically relevant human carbonic anhydrase (hCA, EC 4.2.
View Article and Find Full Text PDFIn the facultative intracellular pathogen Brucella suis, histidinol dehydrogenase (HDH) activity, catalyzing the last step in histidine biosynthesis, is essential for intramacrophagic replication. The inhibition of this virulence factor by substituted benzylic ketones was a proof of concept that disarming bacteria leads to inhibition of intracellular bacterial growth in macrophage infection. This work describes the design, synthesis and evaluation of 19 new potential HDH inhibitors, using a combination of classical approaches and docking studies.
View Article and Find Full Text PDFLipoic acid moieties were attached to amine or amino acids showing activating properties against the zinc enzyme carbonic anhydrase (CA, EC 4.2.1.
View Article and Find Full Text PDFA series of sulfonamides incorporating sugar moieties and the sulfanilamide scaffold have been investigated for their interaction with the secretory isoform of the zinc enzyme carbonic anhydrase (CA, EC 4.2.1.
View Article and Find Full Text PDFA series of fluorinated-phenylsulfamates have been prepared by sulfamoylation of the corresponding phenols and the inhibition of four physiologically relevant carbonic anhydrase (CA, EC 4.2.1.
View Article and Find Full Text PDFAnticancer Agents Med Chem
July 2009
Of the thirteen active carbonic anhydrase (CA) isozymes, the transmembrane isoform CA IX has been shown to be linked with carcinogenesis. CA IX presents an ectopic expression in a multitude of carcinomas derived from cervix, uteri, kidney, lung, oesophagus, breast, colon, etc., contrasting with its restricted expression in normal tissues, namely in the epithelia of the gastrointestinal tract.
View Article and Find Full Text PDFWater-soluble biocompatible rhamnose-coated Fe(3)O(4) nanoparticles of 4.0 nm are obtained by covalent anchorage of rhamnose on the nanoparticles surface via a phosphate linker. These nanoparticles present superparamagnetic behavior and nuclear relaxivities in the same order of magnitude as Endorem that make them potential magnetic resonance imaging (MRI) contrast agents of a second generation, where the saccharides represent also specific ligands able to target lectins on skin cells.
View Article and Find Full Text PDFA series of aromatic, arylalkenyl- and arylalkyl boronic acids were assayed as inhibitors of four physiologically relevant carbonic anhydrase (CA, EC 4.2.1.
View Article and Find Full Text PDFA series of spin-labeled sulfonamides incorporating TEMPO moieties were synthesized by a procedure involving the formation of a thiourea functionality between the benzenesulfonamide and free radical fragment of the molecules. The new compounds were tested as inhibitors of the metalloenzyme carbonic anhydrase (CA, EC 4.2.
View Article and Find Full Text PDFZinc ion plays a crucial role in the protein's functions and is linked to a variety of physiological processes. It constitutes an essential component of numerous enzymes especially carbonic anhydrase (CAs, EC 4.2.
View Article and Find Full Text PDFThe direct preparation of mannosyl[2]rotaxane derivatives by O-glycosylation from tetra-O-acetyl-alpha-D-mannosyltrichloroacetimidate and a tert-butylanilinium alcohol in the presence of dibenzo-24-crown-8 is described. The method appears to be very efficient and allows for the preparation of either orthoester or mannosyl rotaxane derivatives, depending on reaction conditions.
View Article and Find Full Text PDFReaction of EDTA/DTPA dianhydride with aromatic/heterocyclic sulfonamides afforded a series of derivatives incorporating polyaminopolycarboxylate tails and benzenesulfonamide or 1,3,4-thiadiazole-2-sulfonamide heads. These compounds have been used as ligands to prepare Cu(II) complexes. Both parent sulfonamides as well as their copper complexes behaved as potent inhibitors of four carbonic anhydrase (CA, EC 4.
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