Cyclic or acyclic?

Criteria determining the cyclic form of sugar arylhydrazones are listed: build up of the chain of H-bonds, the key element of stability was determined by high resolution NMR and QM data.
The structural properties of monosaccharide arylhydrazones were investigated, not only D-hexose arylhydrazones with different configurations, like D-gluco, D-galacto, D-manno, and D-talo, were examined, but also a new category, hexosamine phenylhydrazones and 4-nitrophenylhydrazones.

Abstr1 Ap

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