4-methoxy-2,2-dimethyl-6-(1-methylene-allyl)-tetrahydro-furo[3,4-d][1,3]dioxole

Methyl-3-desoxy-5,6-O-isopropyliden-α-D-erythro-hexofuranosid-2-ulose

methyl 2,3:5,6-di-O-isopropylidene-Β-L-gulofuranoside