2.2 Rxn of galactose with acetoneandacidOHHCH+HOHO'OHOHdiacetonegalactosegalactopyranose
2.2#Rxn#of#galactose#with#acetone#and#acid#
2.3Rxnofmannosewithacetoneand acidHOOhH+H+HOHOIOH?HOOHOHHOOHOHmannopyranosemannofuranosediacetonemannose
2.3#Rxn#of#mannose#with#acetone#and#acid#
3.BenzylideneprotectionofcarbohydratehydroxylgroupsHOHMeOOMePh0PhH福OHOH+OHOHOMeOMePhHOH.OHCMeOOMeHPhHOHOH+OHOHOMeOMe
3.#Benzylidene#protec0on#of#carbohydrate#hydroxyl#groups#
4.Butane diacetal protection of diolsHOHOMeOHOMeOHOHOMe0MeoH+OOMeSMeSMeOHOMeOH0OMeSMe
4.#Butane#diacetal#protec0on#of#diols
5.Cyclicacetalhydrolysis:deprotectionofcarbohydratehydroxylgroupsHOAcOHHO"H20HOHO
5.#Cyclic#acetal#hydrolysis:#deprotec0on#of#carbohydrate## hydroxyl#groups#