The use of 2-oxo glycosyl halides

Generation of the (3-D-mannopyranosidic linkage via Ag /Si02-Al203 activation of 2-ulosyl bromides [36]. 

Chloroform/ethyl acetate and cyclohexane for chromatography flammable, toxic 

Round bottomed flasks (2 X 10 ml, 1 X 250 ml) with rubber septa and magnetic stirrer bars Magnetic stirrer 

Source of dry argon (or nitrogen) gas Syringe and needle Sinter funnel 

Experimental procedure. Safety glasses should be worn during the experiment and all manipulations should be performed in a fume cupboard. 

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