1,2:4,5-Di-O-isopropylidene-beta-D-psicopyranose

1,2:4,5-diisopropylidene-b-d-psicopyranose ; 1,2:4,5-di-o-isopropylidene-b-d-*psicopyranose ; spiro[1,3-dioxolane-4,6'-[6h-1,3]dioxolo[4,5-c]pyran], b-d-psicopyranose deriv. ; 1,2:4,5-di-o-isopropylidene-β-d-psicopyranose ; 1,2:4,5-di-o-isopropylidene-b-d-ribo-hexulopyranose ; psicopyranose,1,2:4,5-di-o-isopropylidene-, b-d- (8ci) ; b-d-psicopyranose,1,2:4,5-bis-o-(1-methylethylidene)- ; 1,2:4,5-di-o-isopropylidene-beta-d-psicopyranose