5-0-Acetyl-l,2-0-isopropylidene

O-Isopropylidene, 5-Ac, tosylhydra-zone 5-0-Acetyl-l,2-0-isopropylidene-a-D-etythto-pentofuranos-3-ulose tosyl-hydrazone... 

Acetyl-l,2-0-isopropylidene-3,4-di-0-mesyl-p-D-fructopyranose, 1-62 3-0-Acetyl-l,2-0-isopropylidene-4,5-di-0-tosyl-p-D-fructopyranose, 1-62 3-0-Acetyl-l,2-0-isopropylidene-5,6-di-0-tosyl-a-D-glucofuranose, 1-66 3-0-Acetyl-l,2-0-isopropylidene-p-D-fructopyranose, 1-62... 

Nitrogen-containing bases have been used to bring about partial deprotection of carbohydrate nitrates. Considerable selectivity was achieved in the reaction245 of 6-0-acetyl-l,2-0-isopropylidene-a-D-glucofuranose 3,5-dinitrate in benzene solution with a 30% solution of dimethylamine in ethanol, from which 1,2-O-isopropylidene-a-D-glu-cofuranose 5-nitrate was isolated in 47% yield. 

Internal displacement of a secondary sulfonyloxy group occurred during base-catalyzed elimination of the 5-p-tolylsulfonyloxy group from 3-0-acetyl-l,2-0-isopropylidene-5-0-p-tolylsulfonyl-6-0-trityl-a-D-glucofuranose (97) 3,5-anhydro-l,2-0-isopropylidene-6-0-trityl-L-idofuranose (98) was formed as a minor product.326... 

Di-0-acetyl-l,2-0-isopropylidene-a-D-allofuranose, 1-58 r,3-Di-0-acetyl-l,2-0-isopropylidene-D-apio-p-L-furanose, A-785 r,3-Di-0-acetyl-l,2-0-isopropylidene-D-apio-a-D-furanoside, A-785... 

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