93527-89-0Relevant articles and documents
Synthesis of bile acid 24-acyl glucuronides
Goto, Junichi,Murao, Naoaki,Oohashi, Junji,Ikegawa, Shigeo
, p. 180 - 185 (2007/10/03)
The synthesis of acyl glucuronides of common bile acids is described. By means of the Mitsunobu reaction employing diethylazodicarboxylate and triphenylphosphine, bile acids were condensed through the inherent C-24 carboxy group with benzyl 2,3,4-tri-O-benzyl-D-glucopyranuronate, which was prepared from 1-O-methyl-α-D-glucose. The separation and purification of the β2-anomers at the anomeric position of the sugar moiety were attained by preparative thin-layer chromatography and/or high-performance liquid chromatography on a column packed with phenyl-bonded silica using H2O-MeOH as a mobile phase. The removal of the benyl group on the sugar moiety was achieved by catalytic hydrogenation with 10% palladium on carbon to yield the desired acyl glucuronides of bile acids. The structures of these acyl glucuronides were confirmed by proton nuclear magnetic resonance spectral properties.
SYNTHESIS OF A DISACCHARIDE COMPONENT OF THE CAPSULAR POLYSACCHARIDE ANTIGEN OF Streptococcus pneumoniae TYPE 1
Loenn, Hans,Loenngren, Joergen
, p. 39 - 44 (2007/10/02)
Methyl 2-acetamido-4-amino-2,4,6-trideoxy-3-O-(α-D-galactopyranosyl-uronic acid)-α-D-galactopyranoside has been synthesised.The parent disaccharide is a structural element of the capsular polysaccharide antigen of Streptococcus pneumoniae type 1.