Chain elongation of monosaccharides by sequential cross metathesis and asymmetric dihydroxylation: expeditious approach to higher sugars

Glucose-derived alkenes were homologated via chain elongation to afford higher sugars by the application of cross metathesis with an alkene followed by Sharpless asymmetric dihydroxylation. Heptose, octose, nonose, and decose derivatives were expeditiously prepared by this method.