Background. The acute ingestion of ketone body supplements can improve exercise responses such as oxygen consumption and blood lactate. Additionally, ketone body supplements show increases in circulating βhb concentration, matching those of someone in a state of nutritional ketosis. Studies testing ketone body supplements have reported different results in exercise response and varying gastroin...

The reduced oligosaccharide chains of epiglycanin, the major cell-surface glycoprotein of the TA3-Ha ascites tumor cell of the strain A mouse were cleaved by a fi elimination reaction under reductive conditions. Neutral and acidic oligosaccharides were separated on a column of Dowex 1 (formate). The neutral reduced oligosaccharides, upon gel filtration on Bio-Gel P-2, yielded three fractions, w...

A 3-step synthesis of 3-acetamido-6-arylpyridazines as potential NPY5 antagonists.

Abstract Background Chiral furfuryl alcohols are important precursors for the synthesis of valuable functionalized pyranones such as rare sugar L-rednose. However, enantiopure chiral biobased remains scarce. In this work, we present a chemoenzymatic route toward nitrogen-containing ( R )- and S )-3-acetamido-5-(1-hydroxylethyl)furan (3A5HEF) from chitin-derived N-acetyl-D-glucosamine (NAG). Fin...

The first examples of the directed, boron-mediated aldol reaction between different ketones are presented. Transformation of a variety of ketones to their corresponding boron enolates with Chx2BCl/Et3N, followed by reaction with acceptor ketones in diethyl ether, and oxidation of the resultant boron aldolate (H2O2, MeOH/pH 7 buffer), provided the aldol addition products. The reaction was most f...

Chitin, a polysaccharide composed of β-(1–4)-linked 2-deoxy-2-acetamido-d-glucose units, is found in cell walls different organisms, including crustaceans, fungi, insects, some algae, microorganisms, and invertebrate animals, its deacetylation into chitosan confers it with incredible chemical versatility allowing to be processed numerous products [...]

NOT FOR INTRATHECAL USE DESCRIPTION HEXABRIX is a sterile, non-pyrogenic, aqueous solution intended for use as a diagnostic radiopaque medium. HEXABRIX contains 39.3% w/v N-(2-hydroxyethyl)­ 2,4,6-triiodo-5-[2-[2,4,6-triiodo-3-(N-methylacetamido)-5-(methylcarbamoyl) benzamido] acetamido]-isophthalamic acid, compounded with 1-deoxy-1-(methylamino)-D-glucitol (1:1) and 19.6% w/v sodium N-(2-hydro...

Lipopolysaccharides were isolated from Cifrobacfer freundii ATCC 8090 by 44% aqueous-phenol fractionation. The lipopolysaccharides were isolated from the phenol phase and phenol-water interphase fractions. Acid hydrolysis yielded glucosamine and a 3-amino sugar identified as 3amino-3,6-dideoxyglucose by comparison with authentic 3-amino-3,6-dideoxyhexoses by ion exchange chromatography. Compari...