78950-11-5Relevant academic research and scientific papers
55. A CD-Spectroscopic Alternative to Methylation Analysis of Oligosaccharides: Reference Spectra for Identification of Chromophoric Glycopyranoside Derivatives
Wiesler, William T.,Berova, Nikolina,Ojika, Makoto,Meyers, Harold V.,Chang, Mayland,et al.
, p. 509 - 551 (2007/10/02)
A microscale method for identifying the monosaccharide units and their linkages in oligosaccharides is presented.Sugar components are identified by UV and CD spectroscopy of chromophoric degradation products.CD spectral data for approximately 150 differen
CHARACTERIZATION OF METHYL GLYCOSIDES AT THE PICO- TO NANO-GRAM LEVEL
Golik, Jerzy,Liu, Hung-Wen,Dinovi, Michael,Furukawa, Jun,Nakanishi, Koji
, p. 135 - 146 (2007/10/02)
We describe a general method that permits characterization of 100-pg to 1-ng quantities of sugars.Thus, oligosaccharides are subjected to methanolysis, followed by per-p-bromobenzoylation or pernaphthoylation, and the methyl glycoside peresters are separated by high-pressure liquid chromatography.The method is also applicable to amino and acetamido sugars.If required, the separated sugar derivatives may be unequivocally identified by the characteristic quasi-M+ peaks of bromobenzoates and extrema of excitation-split circular-dichroism (c.d.) curves.Furthermore, as the c.d. extrema of polybenzoates are predictable from extrema of component dibenzoate units, the c.d. data yield information on the unknown spatial disposition of -OH, -NH2, and -NHAc groups of glycopyranoses.Application of the method is demonstrated with viridopentaose C, a pentasaccharide obtained from the antibiotic sporaviridin.
