M. Yanase, M. Funabashi
Jan 1, 2000
Citations
0
Influential Citations
6
Citations
Journal
Journal of Carbohydrate Chemistry
Abstract
ABSTRACT tert-Butyl 1,2-cis-1-thioglycopyranosides of various aldohexoses (D-glucose, D-galactose, D-mannose, and L-rhamnose), and disaccharides (cellobiose, lactose, and maltose) were preferentially prepared in good yields by reacting the corresponding free sugars with tert-butyl mercaptan in 90% trifluoroacetic acid at room temperature. No selectivity, however, was observed at all in the case of 2-deoxy-D-arabino-hexopyranose. A possible mechanism for the 1,2-cis-selectivity was discussed from a standpoint of thermodynamic and kinetic control.