for the following products
(+)-2,3:5,6-di-O-Isopropylidene-alpha-D-mannofuranose | (3aR,4S,6R)-6-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyl-tetrahydro-2H-furo[3,4-d][1,3]dioxol-4-ol | a-D-Mannofuranose,2,3:5,6-bis-O-(1-methylethylidene)- | Diaceton-alpha-D-mannofuranose | Diacetone-D-mannose and 2,3:5,6-di-O-Isopropylidene-alpha-D-mannofuranose
