Saccharide poly , preparation

Migliore, D., and P. Jolles A hydrosoluble adjuvant active mycobacterial poly-saccharide-peptidoglycan . Preparation by a simple extraction technique of the bacterial cells (strain Peurois). FEBS Letters 25, 301 (1972). 

Zenkl et al. [51] presented another approach to design saccharide-sensitive nanobeads. They prepared particles (0 380 nm) based on poly (/V- i sopropy I aery I am ide) cross-linked with phenylboronic acid moieties. In the presence of a saccharide (glucose or fructose) the particles reversibly swell due to the formation of negative charges. A FRET-indicator couple (fhiorescein/rhodamine) is used to monitor the... 

D-Glucopyranose polymers that are uniformly substituted selectively in position 2 are claimed.169 These products are obtained by treating starch with amides and amines in a non-aqueous medium. Winter190 prepared condensation products of urea and mono- and poly-saccharides from aqueous solutions. 

The reaction undergone by alcohols with trialkyl- and triaryl-boranes in the presence of pivalic acid, to give borinic esters, and the thermal cyclization of bis(dialkylborinates) to boronates, are discussed briefly in Section II. Many borinates have been prepared in quantitative yield from mono-, di-, oligo-, and poly-saccharides,338,108 and mixed... 

Schuerch2) reviewed the medical application of synthetic poly-saccharides. Capozza199 reported that the poly-orthoester prepared from 2-ethoxy-4-hydroxymethyl-l,3-diox-olane in the presence of add are useful as slow-release agents for drugs. Poly-2,6,7-trioxabicyclo[2.2.1]heptane VIII showed the same behavior200). 

Ultracentrif ugal studies have shown that the material isolated was poly-disperse and that the macromolecules were highly anisometric. Certain poly.saccharide preparations contained from 60 to 90% of dialyzable components. ... 

Activated rat platelets secreted PS-PLAi as well as SPLA2-IIA, both of which are stored in a-granules [20]. The PS-PLAi was purified from culture medium of thrombin-activated platelets prepared from 1000 rats [17]. In rats, PS-PLAj expressed not only in platelets but also in heart and lung [22]. The enhanced expression was detected in many tissues when rats were treated with bacterial lipo-poly-saccharide in vivo (unpublished observation). The expression of PS-PI.A, differed between species. For example, the mRNA encoding the enzyme was poorly expressed in human platelets but highly expressed in rat platelets. 

The cyclic acetals have been of great assistance in the preparation of, for example, methylated sugars, - deoxy sugars, and amino-deoxy sugars. The specific syntheses of many di- and tri-saccharides have been described - in these, a suitable acetal of the aldose is caused to react with a poly-O-acetylglycosyl halide or a bromo- or chloro-hydrin derivative. 

The ester and carbamate derivatives of cellulose and amylose are among the most successful and versatile chiral stationary phases for liquid and supercritical fluid chromatography [1,4,28,107-109]. These phases are prepared by reaction of the poly(saccharide) with an acid chloride (ester derivative) or phenylisocyanate (carbamate... 

Chiral stationary phases prepared from silica-based coated poly(saccharide) derivatives... 

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