30572-04-4Relevant articles and documents
ACIDIC DYSTROGLYCAN OLIGOSACCHARIDE COMPOUND AND METHOD FOR MAKING SAME
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, (2019/07/20)
A synthetic dystroglycan oligosaccharide comprising Formula (I) wherein a repeating disaccharide motif consists of Glucuronic Acid (ClcA) and Xylose (Xyl) having a defined glycosyl connection GlcA-β-(1→3)-Xyl-α-(1→3)-GlcA; wherein either end of the synthetic dystroglycan oligosaccharide is conjugatable with chemical or biological vehicle or support; wherein the non-reducing terminal (II) is conjugatable with any oligosaccharides or groups that can modify a hydroxyl functionality; and wherein the reducing terminal is conjugatable with any tags, oligosaccharides or anything that can modify a hydroxyl functionality.
4,6-Di-O-benzoyl-3-O-benzyl-α-D-arabino-hexo-pyranos-2-ulosyl bromide: A conveniently accessible glycosyl donor for the expedient construction of diantennary β-D-mannosides branched at O-3 and O-6
Lichtenthaler, Frieder W.,Klaeres, Ulrich,Szurmai, Zoltan,Werner, Bernd
, p. 293 - 303 (2007/10/03)
A concise practical, large scale-adaptable six-step sequence has been developed for the transformation of diacetone-glucose into 4,6-di-O-benzoyl- 3-O-benzyl-α-D-arabino-hexo-pyranos-2-ulosyl bromide (7), a most useful indirect β-D-mannosyl donor as its blocking group pattern allows the construction of biologically relevant β-D-mannosides branched at O-3 and O- 6. The broad utility of this new ulosyl bromide 7 resides in its high anomeric reactivity, and in the ease and uniformity with which β- stereocontrol can be achieved over both, glycosidations and carbonyl reduction of the β-ulosides formed: Koenigs-Knorr conditions exclusively provide β-glycosiduloses, hydride reduction of their carbonyl functions proceeds with high stereoselectivities (> 20:1) in favor of the β-D- mannosides. These preparatively auspicious properties are materialized in an efficient, straightforward synthesis of α-D-Manp-(1 → 6)-[α-D-Manp-(1 → 3)]-β-D-Manp-(1 → O)-Octyl, the 3,6-O-branched core-mannotrioside carrying an octyl spacer instead of the chitobiosyl unit.