Monosaccharides: Their Chemistry and Their Roles in Natural by Peter M. Collins

By Peter M. Collins

Monosaccharides Their Chemistry and Their Roles in traditional items Peter Collins college of London, united kingdom Robin Ferrier Victoria collage of Wellington, NZ An in-depth textual content for college kids beginning their learn of carbohydrate chemistry, Monosaccharides relates the monstrous box of carbohydrate chemistry to either artificial natural chemistry and organic methods. The constructions and reactions of monosaccharides are tested intimately and their purposes in synthesis and as biologically lively compounds are mentioned and defined at size. This textbook, written by way of recognized skilled lecturers and researchers in carbohydrate chemistry, provides:* updated assurance of this quickly increasing and constructing box* category of monosaccharide reactions in response to response web site* therapy of monosaccharides as natural compounds with rationalized chemistry* greater than a thousand references to the first literature* a dialogue of monosaccharides as elements of biologically energetic compoundsMonosaccharides should be valuable for college students and teachers alike in natural, bioorganic and traditional items chemistry, biochemistry, glycobiology and molecular biology.

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Par les reactifs nucleophiles b. Par I'hydrure de lithium aluminium c. Par les acides halohydriques d. 6 Autres composes possedant un cycle oxirane a. Fosfomycine b. Oleandomycine c. Toxines de Coriara myrtifolia et de la coque du Levant d. Acide vernolique e. 3 Aziridines Les mitomycines A, B, C 3. 1 Cyclodeshydrohalogenation des p-halogenoalcools 35 L'action d'une base forte sur un {3-halogenoalcool deprotone de la fonction alcool avec formation de la base conjuguee, laquelle, par une reaction de substitution nucleophile intramoleculaire de I'atome d'halogene, conduit a la cyclisation en oxirane.

Une variante de la methode de Stille (reaction de Stille-Kelly) concerne ('utilisation d'hexamethyldistannane et s'applique a des reactions de cyclisation intramoleculaire avec un compose dihalogene comme dans les exemples (F ) et (G). 26 Chimie organ/give heterocyclique La reaction de Suzuki est encore une reaction catalysee par le palladium par couplage « croise » entre un reactif organobore et des halogenures ou triflates organiques (H). II existe moins de derives organobores que d'organostannanes mais leur nombre grandit.

Dans cette reaction, un cocatalyseur est necessaire, c'est I'iodure cuivreux (comme dans la reaction de Stephens-Castro dont elle derive et qui consiste a realiser le couplage d'arylacetylene (Cu+) avec des iodoalcenes). La reaction a lieu en milieu basique. Dans I'exemple (B) le derive acetylenique produit par cette reaction, un alkynylpyridinol, se cyclise, sous I'effet de la catalyse du palladium et du cuivre en 2-phenylfuropyridine. 6) 2. 5 27 Les reactions de carbonylation Les reactions de carbonylation catalysees par le palladium sont nombreuses.

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