SEARCH Articles Figures Tables Functional Groups by Nucleophilic Substitution at Saturated Carbon Glycosylations by Nucleophilic Substitution at the Aglycone Carbon Glycosylations by Nucleophilic Substitutions at the Anomeric Carbon Substitution at carbon by organomagnesium compounds Substitutions of Heteroaromatic Bases by Nucleophilic Carbon Free Radicals