ChemInform Abstract: Synthesis of 2,2-Di-C-methyl-2-deoxy- and 4,4-Di-C-methyl-4-deoxypyranosides via Michael Addition of Conjugated Enopyranosiduloses.
Abstract
Michael addition of (V) to (I), (III) and (VI) yields the gem-dimethyl compounds (II), (IV) and (VII).
ChemInform Abstract
Michael addition of (V) to (I), (III) and (VI) yields the gem-dimethyl compounds (II), (IV) and (VII). If the reaction of (I) or (III) is followed by quenching with (VIII), hydroboration and acetylation, the products (X) or (XI) are obtained, containing the full set of asym. carbons.