Detail of "5155-47-5"

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Radically initiated polymerization of a methacryloylamido-terminated saccharide

Radically initiated polymerization of a methacryloylamido-terminated saccharide. Part 1. Monomer synthesis, homopolymerization, and characterizations. Badey, Berangere; Boullanger, Paul; Domard, Alain; Cros, Philippe; Delair, Thierry; Pichot, Christian (Unite Mixte, ENS Lyon, Lyon F-69364, Fr.). Macromolecular Chemistry and Physics, 197(11), 3711-3728 (English) 1996 Huethig & Wepf. CODEN: MCHPES.Chemicals with cas numbers 84064-35-7 and 5155-47-5 also play role. ISSN: 1022-1352. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 36, 44 A methacrylamido-terminated saccharide, 6-deoxy-6-methacrylamido-D-glucopyranose (MAG), was synthesized using a new and easy pathway. Kinetics of the radically initiated soln. homopolymn. of this monomer were investigated at 50° using 4,4'-azobis(4-cyanopentanoic acid). The obtained kp/kt1/2 value of ~1.0 mol-1/2×L1/2×s-1/2 is indicative of the strong ability of MAG to polymerize (kp and kt being the rate consts. of propagation and termination, resp.). The chem. structure of the homopolymer, as analyzed by 13C NMR spectroscopy shows a tacticity which is in favor of a syndiotactic configuration resulting from the bulkiness of the side group. The dimensional characteristics of the polymers were studied by light scattering and online detection in size-exclusion chromatog. (SEC). As expected from the kp/kt1/2 value, high wt.-av. mol. wts. were obtained. The small av. radii of gyration were found to reflect a relatively compact structure in water due to inter- and intramol. interactions. Viscosity studies in various solvents as well as values of the second virial coeff. corroborate such a behavior which reflects that water is a poor solvent for poly(MAG). .

Thioureido-b-cyclodextrins as molecular carriers

Thioureido-b-cyclodextrins as molecular carriers. Fernandez, Jose M. Garcia; Mellet, Carmen Ortiz; Maciejewski, Sylwester; Defaye, Jacques (Departemente de Recherche FOndamentale sur la Maitere Condensee, C.N.R. 187100-14-7 and 5155-47-5 are cas registry numbers. These chemicals are also mentioned in this article.S. and C.E.A., Grenoble F-38054, Fr.). Chemical Communications (Cambridge), (24), 2741-2743 (English) 1996 Royal Society of Chemistry. CODEN: CHCOFS. ISSN: 1359-7345. DOCUMENT TYPE: Journal CA Section: 33 (Carbohydrates) Section cross-reference(s): 22, 34 Alkyl, glycosyl and glycopeptidyl derivs. of 6I-deoxy-6I-thioureidocyclomaltoheptaose, prepd. in high yield from either 6I-amino-6I-deoxycyclomaltohepataose or the corresponding 6I-isothiocyanate, exhibit considerably enhanced water solubilities as compared with the native b-cyclodextrin. .