Abstract:
The dioxepan 2 obtained by periodate oxidation of methyl-4,6-di-O-benzylidene-a-D-glucpyranoside
underwent cyclization with ethyl and tertbutyl cyanoacetate and cyanoacetamide to give in good yields only one
3-cyano-3-deoxy-heptoseptanosides with D-glycero-D-ido configuration. 2,4-di-O-acetyl and 2,4-di-O-methoxymethyl
derivatives were obtained from the cyclization products.