Regioselective differentiation of the hydroxy groups of mono- and oligosaccharide substrates is necessary to form building blocks that can be used for synthetic transformations. In this paper, we show that iron(III) chloride hexahydrate catalyses the tandemprotection of mono- and disaccharides to give, in a one-pot procedure, selectively protected carbohydrate building blocks. This tandem protocol
Abstract Two new glycerolglucosides, liliosides D and E, have been isolated from the leaves and stems of Lilium japonicum. Their structures have been elucidated by chemical, spectroscopic and synthetic methods.
Interaction of (1→4)- and (1→6)-linked disaccharides with the fenton reagent under physiological conditions
作者:Koji Uchida、Shunro Kawakishi
DOI:10.1016/s0008-6215(00)90805-x
日期:1988.2
(1→4)-linked disaccharides. About 35–40% of (1→6)-and 15–20% of (1→4)-linked disaccharides were oxidatively degraded to smaller molecules after incubation for 24 h. Of the four disaccharides examined, namely, maltose, isomaltose, cellobiose, and gentiobiose, the α-(1→6)-linked disaccharide isomaltose exhibited the highest reactivity, whereas the β-(1→4)-linked disaccharidecellobiose showed the lowest