1-Methyl(or phenyl)-5-(penta-O-acetyl-D-galacto-penitol-1-yl)pyrazoles from the reactions of 3,4,5,6,7-penta-O-acetyl-1,2-dideoxy-1-nitro-D-galacto-hept-1-enitol with aldehyde methyl(or phenyl)hydrazones

Article abstract of DOI:10.1016/0008-6215(91)80121-3

The title hept-1-enitol (2) reacted with aldehyde methyl(or phenyl)hydrazones in refluxing methanol or butyl acetate to give 1-methyl(or phenyl)-5-(penta-O-acetyl-D-galcto-pentitol-1-yl)pyrazoles in good (for 1-methylpyrazoles) or moderate yields (for 1-p