SEARCH Articles Figures Tables 1,2:3,4-di-O-isopropylidene 1.2- Isopropylidene glucofuranose Glucofuranose Glucofuranose l,2:5,6-di-0-isopropylidene L,2:5,6-Di-O-isopropylidene-a-D-glucofuranose