| pubmed-article:511115 | pubmed:abstractText | The syntheses of anomeric ethyl ketosides of 5-N-acetyl-D-neuraminic acid are described. The alpha-anomer prepared by a modified Koenigs-Knorr procedure starting from acetochloroneuraminic acid is quantitatively cleaved by Vibrio cholerae neuraminidase. Proton-catalyzed reaction of 5-N-acetyl-D-neuraminic acid with ethanol yields the beta-anomer. | lld:pubmed |
