Reaction with alcohol. The glycosidic OH group of mutarotating sugars react with alcohols to form αand βglycosides or acetals. Thus, glucose forms glucosides and fructose forms fructosides. The glucosides, or glycosides in general, do not exhibit mutarotation as the aldehyde group in them is converted to the acetal group. A number of glycosides occur in nature, e.g., phlorhizin (glucose + phlor...

A new benzofuran glycoside, masutakeside I (1) and a new C10 acetylenic acid, masutakic acid A (2) were isolated from the fruiting bodies of the fungus Laetiporus sulphureus var. miniatus. Their structures were established by spectroscopic and chemical methods. The known compounds 3-6 were also obtained and identified as egonol, demethoxyegonol, egonol glucoside and egonol gentiobioside. Some o...